Indian Journal of Nuclear Medicine
Home | About IJNM | Search | Current Issue | Past Issues | Instructions | Ahead of Print | Online submissionLogin
Indian Journal of Nuclear Medicine
  Editorial Board | Subscribe | Advertise | Contact
Users Online: 183 Print this page  Email this page Small font size Default font size Increase font size
Export selected to
Endnote
Reference Manager
Procite
Medlars Format
RefWorks Format
BibTex Format
   Table of Contents - Current issue
Coverpage
April-June 2021
Volume 36 | Issue 2
Page Nos. 107-234

Online since Monday, June 21, 2021

Accessed 2,402 times.

PDF access policy
Journal allows immediate open access to content in HTML + PDF

EPub access policy
Full text in EPub is free except for the current issue. Access to the latest issue is reserved only for the paid subscribers.
View as eBookView issue as eBook
Access StatisticsIssue statistics
RSS FeedRSS
Hide all abstracts  Show selected abstracts  Export selected to  Add to my list
ORIGINAL ARTICLES  

Prognostic value of metabolic tumor parameters in pretreatment 18F-fluorodeoxyglucose positron emission tomography–computed tomography scan in advanced non-small cell lung cancer Highly accessed article p. 107
Ayan Mallick, Jayanta Das, Manoj Kumar Shaw, Bivas Biswas, Soumendranath Ray
DOI:10.4103/ijnm.IJNM_170_20  
Objective: This retrospective study aimed to investigate whether metabolic parameters of primary tumour i.e. maximum standardized uptake value (SUVmax), metabolic tumour volume (MTV) and total lesion glycolysis (TLG) predict overall survival (OS) in patients with advanced stage non-small cell lung cancer (NSCLC). Materials and Methods: SUVmax, MTV and TLG of the primary tumors were measured in staging 18F-Fluorodeoxyglucose Positron emission tomography- Computed tomography (18F-FDG PET/CT) scan of 97 NSCLC patients by gradient based tumour segmentation method. Prognostic ability was assessed for overall survival (OS) of the patients. Result: The median follow-up period of the study was 15.84 months (range 1.3 to 47.97 months).The estimated median OS was 11.29 months (range 1.37 to 38.63 months). Total of 40 (41.24%) patients had progressive disease and 21 (21.65%) patients died during the follow up period. Receiver Operating Characteristic (ROC) analysis showed that the area under the curve (AUC) for MTV was significant (area = 0.652 ± 0.065; 95% CI = 0.548 – 0.746; P = 0.020). Kaplan-Meier survival curves showed that the OS differences between the groups of patients who were dichotomized by the median value of MTV (38.76 ml, P = 0.0150) and TLG (301.69 ml, P = 0.0046) were significant. MTV (hazard ratio = 4.524; 95% CI = 1.244 – 16.451; P = 0.022) was found to be an independent prognostic factor for OS in multivariate analysis. Conclusion: MTV of the primary tumor is a potential prognostic parameter for OS in our population of advanced NSCLC patients independent of other risk factors.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

In-house preparation and quality control of Ac-225 prostate-specific membrane antigen-617 for the targeted alpha therapy of castration-resistant prostate carcinoma Highly accessed article p. 114
Parul Thakral, Jakub Simecek, Sebastian Marx, Jyotsna Kumari, Vineet Pant, Ishita Barat Sen
DOI:10.4103/ijnm.ijnm_200_20  
Purpose: Ac-225 labeled with prostate-specific membrane antigen (PSMA-617), a transmembrane glycoprotein which is highly expressed in prostate carcinoma cells, is presently being considered a promising agent of targeted alpha therapy for the treatment of patients suffering from metastatic castration-resistant prostate cancer. In the present study, we report an optimized protocol for the preparation of therapeutic dose of Ac-225 PSMA-617 with high yield and radiochemical purity (RCP). Methods: Ac-225 PSMA-617 was prepared by adding the peptidic precursor-PSMA-617 (molar ratios, Ac-225: PSMA-617 = 30:1) in 1 ml ascorbate buffer to Ac-225 and heating the reaction mixture at 90°C for 25 min to obtain the radiopeptide with high RCP and yield. The radiolabeled peptide was administered in patients who met the eligibility criteria and posttherapy assessment was done. Results: Ten batches of Ac-225 PSMA-617 were prepared following this protocol. The radiopeptide was obtained with an adequate yield of 85%–87% and RCP of 97%–99%. Conclusion: The current protocol allows single-step, successful, routine inhouse radiolabeling of Ac-225 with PSMA-617 with high yield and RCP.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Establishing the [18F]-FDG production via two different automated synthesizers for routine clinical studies: Our institutional experiences of 4 years Highly accessed article p. 120
Priya Saxena, Akhilesh Kumar Singh, Manish Dixit, Subhash Chandra Kheruka, Tarique Mahmood, Sanjay Gambhir
DOI:10.4103/ijnm.IJNM_137_20  
Introduction: [18F]-Fluorodeoxyglucose ([18F]-FDG) is the most widely used positron-emission tomography tracer used for imaging in clinical studies such as early detection of cancer or its malignancies, quantifications, staging, and restaging of several malignancies. For clinical application, routine production of this tracer is mandatory in compliance to regulatory guidelines. Several dedicated commercial synthesizers are currently used for producing[18F]-FDG for clinical usage. Being at hospital radiopharmacy, it is our responsibility and duty to support the clinical service with uninterrupted production and supply of [18F]-FDG. This document describes the production of [18F]-FDG using two different automated synthesizers in terms of its production yield, time of synthesis, and analyze the quality control (QC) of the produced [18F]-FDG. Materials and Methods: The precursor, mannose triflate ultra-pure, authentic nonradioactive standard FDG and [18O]-water were obtained from ABX, Germany. Solvents and reagents were purchased from Sigma Aldrich India Ltd. and Fisher Scientific India Ltd., (Mumbai, Maharashtra, India). Results: The protocol developed for the synthesis with MPS-100 synthesizer yield of [18F]-FDG is approximate about 45% End of Bombardment (EOB) with synthesis time of around 35 min, whereas with F300E synthesizer it is around 60% with synthesis time of 25 min. The quality of the tracer produced by both synthesizers is at par with the QC parameter for clinical applications. Conclusions: Finally, we have developed the production using two automated synthesis modules which have the capability to produce [18F]-FDG, to do the patient studies in good yield and purity. Our protocol is simple, reproducible, and robust.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Designing and comparing performances of image processing pipeline for enhancement of I-131-metaiodobenzylguanidine images p. 125
Anil Kumar Pandey, Shweta Dhiman, Sreedharan Thankarajan ArunRaj, Chetan Patel, Chandrashekhar Bal, Rakesh Kumar
DOI:10.4103/ijnm.ijnm_231_20  
Objective: An image processing pipeline can have more than one image processing technique in sequence, and the output of the first technique becomes input for the next technique and so on. In this study, we have designed and compared the performances of image processing pipelines for enhancement of I-131-metaiodobenzylguanidine (mIBG) images. Materials and Methods: Five different image processing pipelines (A [Gaussian filter, normalization], B [histogram specification (image 1), Gaussian filter, normalization], C [histogram specification (image 2), Gaussian filter, normalization], D [{histogram specification (image 3), Gaussian filter, and normalization], and E [histogram specification (image 4), Gaussian filter, normalization]) were designed and their performances were evaluated on I-131-mIBG images (n = 122). The image quality was assessed objectively using Perception-based Image Quality Evaluator (PIQE) score and subjectively (on scale 1–4) by two nuclear medicine physician. Sign test was applied to find the statistically significant difference between the image quality obtained using image processing pipelines. We applied test of proportion to compute difference in proportion of image quality score assigned to images obtained using image processing pipelines. Results: Based on PIQE score, the quality of images obtained using all the five image processing pipelines were significantly better than that of input images (P < 0.001). The highest image quality score (=4) was assigned maximum number of times (n = 90) to the images obtained using image processing pipeline D and was significantly different from that of the second best image processing pipeline E (P = 0.015). Conclusions: The image processing pipeline D was found to be better for enhancement of I-131-mIBG images.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

The radioprotective effects of melatonin and nanoselenium on DNA double-strand breaks in peripheral lymphocytes caused by I-131 p. 134
Seyed Masoud Jafarpour, Babak Shekarchi, Hamed Bagheri, Bagher Farhood
DOI:10.4103/ijnm.IJNM_179_20  
Background: One of the treatment modalities for thyroid cancer and hyperthyroidism is radioiodine-131 (I-131) therapy. The use of this therapeutic modality is not completely safe and can lead to oxidative stress, eventually DNA damages. However, these radiation-induced damages can be reduced by antioxidants. This study aimed to investigate the potential radioprotective effects of melatonin and selenium nanoparticles (SeNPs) on DNA double-stranded breaks (DSBs) caused by I-131. Materials and Methods: After obtaining informed consent, 6 ml blood was taken from each volunteer. The samples were divided into two general groups of control (without I-131) and with I-131. Each group was also divided into three subgroups, including without antioxidant, melatonin, and SeNPs. The samples of control group were incubated for 2 h after adding the antioxidants. The samples of I-131 group were first incubated for 1 h with the antioxidants and then the samples re-incubated for another 1 h after adding the I-131. Then, the samples were prepared for γH2AX assay. Results: The findings showed that after 1 h of incubation with 20 μCi I-131/2 mL, the DSB levels increased by 102.9% in comparison with the control group. In the I-131 group, there were significant reductions of the DSB levels after incubation with melatonin (P < 0.001) and SeNPs (P < 0.001) in comparison with the without antioxidant subgroup. Furthermore, the DSB levels at the melatonin + I-131 and the SeNPs + I-131 subgroups decreased to 38% and 30%, respectively, compared to the I-131 subgroup. Conclusion: According to the obtained findings, it can be concluded that the use of melatonin and SeNPs (as radioprotector agents) can reduce the DSB levels induced by I-131 in peripheral lymphocytes.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Facile synthesis of a Pt(IV) prodrug of cisplatin and its intrinsically 195mpt labeled analog: A step closer to cancer theranostic p. 140
K Shitaljit Sharma, KV Vimalnath, Prasad P Phadnis, Rubel Chakravarty, Sudipta Chakraborty, Ashutosh Dash, Rajesh K Vatsa
DOI:10.4103/ijnm.IJNM_188_20  
Background, Aims and Objectives: Cisplatin is extensively used in chemotherapy for treatment of a broad range of cancers. But its undesired side reactions with biomolecules that lead to severe side effects especially on kidney and nervous system, are limiting its clinical utility. To reduce its side effects, the kinetically inert Pt(IV) prodrug was recognized as an alternative approach from satisfactory results of preliminary experiments. But, its approval as anticancer drug for clinical use requires detailed investigations of its anticancer action and pharmacological pathways by employing its analogue which can be traced by a suitable technique. As a step closer towards translation of Pt(IV)-based prodrug from research to clinical level, a protocol for efficient synthesis of 195mPt-radiolabeled Pt(IV) prodrug was devised. Materials and Methods: In order to achieve the aim, we started synthesis from elemental platinum avoiding lengthy steps. The synthesis protocol was standardized on its cold analogue, as [PtCl2(NH3)2(OCOCH2CH2COOH)2] which has been characterized with nuclear magnetic resonance (1H, 13C{1H} and 195Pt{1H}) spectroscopy, microanalyses and cyclic voltammetry. Also, cytotoxicity of [PtCl2(OCOCH2CH2COOH)2(NH3)2] was evaluated against MCF-7 human breast cancer cell lines using cisplatin as test control. Results: Intrinsically, 195mPt-labeled analogue of prodrug was obtained with high radionuclidic and radiochemical purity. It was confirmed by chromatography and γ-ray spectrometry. Conclusion: The 195mPt-radiolabeled prodrug was synthesized in a facile manner. It can be utilized in evaluating the mechanism of anticancer action and pharmacokinetics by enabling synergistic use of molecular imaging and targeted drug delivery.
[ABSTRACT]  [HTML Full text]  [PDF]  [Sword Plugin for Repository]Beta

Do current radiation safety guidelines allow the safe release of a thyroid cancer patient after high-dose radioiodine therapy? An Indian perspective p. 148
Subhash Chand Kheruka, Nilesh Shankar, Manish Ora, Sanjay Gambhir
DOI:10.4103/ijnm.ijnm_210_20  
Aim: Radionuclide therapy may produce a significant radiation exposure risk to the patient's caregivers. The study aims to assess the radiation exposure rate to caregivers after the patient's discharge from the isolation ward. Materials and Methods: Patients of the well-Differentiated thyroid cancer (DTC) were given high-dose radioiodine therapy as an inpatient. Their radiation exposure was measured daily, and they were discharged once the exposure rate falls as per standard guidelines. Detail counseling of the patient and caregiver about radiation safety was done before admission and at the time of discharge. Caregivers were given thermoluminescence dosimeter (TLD) to wear as a locket for 7 days. Radiation exposure received by the caregiver was measure after that. Results: A total of 22 patients (8 male and 14 female) of DTC were recruited in the study. The mean age was 39.0 ± 14.5 years. Patients were treated with 3.79 ± 1.07 (102.4 ± 28.9 mCi) (1.85–5.55 (50–150 mCi) GBq of radioiodine. They were discharged from the isolation ward at a radiation level of 0.028 ± 0.015 mSv/h (3.193 ± 1.71 mR). The mean effective dose received by the caregiver was 14.60 ± 3.43 mSv (1460 ± 343 mR) (9.73–24.25 (973–2765 mR) mSv. Conclusion: Our study denotes that the caregivers of DTC patients receive a significant radiation dose. It was well above the caregiver's annual dose-limit constraints regarding the rationales well as international guidelines of 5 mSv/yr. These could be related to the long travel in public transport and housing conditions. There is a need for patient-specific discharge criteria rather than following standard guidelines to minimize radiation exposure to caregivers.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta
REVIEW ARTICLES Top

A comparative study of pharmacopoeial quality standards and regulations of radiopharmaceuticals p. 153
Prasad Thota, Anusha Thota, Manoj Kumar Pandey, Phulen Sarma, Bikash Medhi, Rakesh Kumar Sharma, Jai Prakash, Anil Kumar Teotia
DOI:10.4103/ijnm.ijnm_222_20  
Radiopharmaceutical preparations are the important pharmaceutical dosage forms used for the diagnosis and therapeutic purposes. Various pharmacopoeias are having methods for the quality control of these preparations in the form of monographs. Indian Pharmacopoeia (IP) also included these monographs in IP 2014 first time with the help of an experts' group on radiopharmaceutical, drawing expertise from elite stakeholder institutions and the core team of Indian Pharmacopoeia Commission. Since then, these standards are regularly updated through the IP addendum and bringing out new edition of IP. IP is a book of official methods as per Drugs and Cosmetic Act, 1940. These standards can be used in government laboratories, private laboratories, or academia in India and abroad. This review provides an overview of the journey of radiopharmaceuticals' standard setting in IP. A comprehensive comparative information of regulatory perspectives of radiopharmaceuticals in different jurisdictions such as the US, EU, and India is also presented.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Review of adverse reactions associated with the use of common diagnostic radiopharmaceuticals p. 163
Bikash Ranjan Meher, Kanhaiyalal Agrawal, Gopinath Gnanasegaran
DOI:10.4103/ijnm.ijnm_219_20  
Radiopharmaceuticals are used in the diagnosis and management of various diseases. There are several reports of adverse reactions related to the use of radiopharmaceuticals, though it is not as common as conventional drugs. Adverse reactions related to radiopharmaceuticals have been not widely reported and documented. In this review, we have tried to summarize the adverse reactions associated with some of the commonly used radiopharmaceuticals.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta
CASE SERIES Top

18F-fluorodeoxyglucose positron emission tomography/computed tomography in the evaluation of anorectal malignant melanoma: A case series p. 168
Nitin Gupta, Babita Drolia, Ritu Verma, Ethel Shangne Belho, Shashi Dhawan
DOI:10.4103/ijnm.IJNM_152_20  
Melanomas are the malignancies that can affect any anatomic region where melanocytes exist (such as the epidermis, eyes, nasal cavity, and anus). Anorectal melanoma is a rare mucosal melanocytic malignancy, comprising 0.8% of all anorectal malignancies. Here, we report a case series of three patients of anorectal melanoma and role of positron emission tomography/computed tomography in diagnosis and follow-up to evaluate the local recurrence and distant metastases. Of three patients, two presented with rectal bleeding and one with obstruction. One patient had recurrence after 10 months, other after 24 months, and third remained disease free post surgery till 9 months.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta
CASE REPORTS Top

Integration of 18F-fluorodeoxyglucose positron emission tomography-computed tomography in diagnostic algorithm of prosthetic valve endocarditis: A case report and review of literature p. 173
Punit Sharma, Suvro Banerjee
DOI:10.4103/ijnm.IJNM_184_20  
Prosthetic valve endocarditis (PVE) is a sinister complication, with high morbidity and mortality. Diagnosis is conventionally based on modified Duke Criteria. 18F-Fluorodeoxyglucose (18F-FDG) positron emission tomography-computed tomography (PET-CT) has shown high accuracy in diagnosing PVE. Positive 18F-FDG uptake in prosthetic valves on PET-CT is now considered major criteria for diagnosis of PVE. We share our experience of 18F-FDG PET-CT imaging as a problem solving tool in a case of suspected PVE and review the relevant literature.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Importance of understanding and analyzing daily quality assurance test of positron emission tomography/computed tomography equipment in minimizing the downtime of equipment in remote places p. 179
Sachin Tayal, Abbas Ali, Vikrant Kumar, Ashish Kumar Jha, Arun Gandhi
DOI:10.4103/ijnm.IJNM_196_20  
This article briefly describes the event of a defective detector block in a daily quality assurance scan/blank scan and insists on implementing guidelines to scan or not to scan in such a scenario. The nuclear medicine physicist should have a clear understanding of the blank scan graph, which shall help rectify the right cause of problem and give confidence to the physician in reporting the acquired study. A routine blank scan in positron emission tomography signifies various parameters of the crystal (coincidence count rate, single count rate, dead time, and coincidence time along with energy response) and in some respect is analogous to the daily uniformity flood image for gamma cameras, providing an overall assessment of detector response. We encountered a bad detector block in our routine quality assurance scan/blank scan and analyzed the root cause behind such an error which was finally restored to normalcy by replacing the defected part with a new one and an error-free blank scan was established. The analysis was carried out by performing various possible checks and discussing the issue with service engineer to help identify the defects much before service engineer actually arrived in our department. This allowed us to take the correct decision and enabled us to get the scanner repaired faster. Hence, a good understanding of the daily quality control test and proper analysis of the same may result in swift decision-making and faster repair of equipment leading to minimal disruption in the clinical workflow as well as avoidance of suboptimal scanning leading to the wrong diagnosis.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Metastatic thyroid cartilage lesion from prostatic adenocarcinoma on 68Ga-prostate-specific membrane antigen positron emission tomography-computed tomography scan: Case series p. 183
Nitin Gupta, Ritu Verma, Ethel Shangne Belho
DOI:10.4103/ijnm.ijnm_218_20  
Prostate cancer usually metastasizes to regional lymph nodes and bone. Laryngeal cartilage metastases are very rare and only few cases have been published so far describing thyroid cartilage metastatic lesions from prostate cancer. Here, we describe 5 cases of carcinoma prostate, 3 staging and 2 follow-up, where 68Ga-prostate-specific membrane antigen positron emission tomography/computed tomography (PET/CT) scan revealed multiple skeletal lesions along with thyroid cartilage metastasis. Initially, laryngeal cartilage metastases remain asymptomatic and in later stages patients present with symptoms. These metastatic lesions to thyroid cartilage are rare entities and can often easily be missed on conventional imaging. PET-CT imaging has overcome this diagnostic problem due to its ability to provide for both anatomical and functional imaging.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Tuberculosis in posttransplant recipients: Challenges in fluorodeoxyglucose positron emission tomography/computed tomography reporting in countries with a high prevalence of tuberculosis p. 189
SJ Seetharam, Vishnukumar Rajaraman, Dhanapathi Halanaik
DOI:10.4103/ijnm.ijnm_225_20  
Tuberculosis (TB) is a common bacterial infection in developing countries. Solid-organ and hematopoietic stem cell transplant recipients are more prone to this infection. Reactivation from previously acquired infection is the most common mode. It has to be ruled out in cases of pyrexia of unknown origin (PUO) before ruling out the other possibilities. We present two cases of incidentally detected TB in the posttransplant patients referred for the evaluation of PUO.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Myeloid sarcoma of the prostatic tissue diagnosed on 18F-FDG PET/CT in treated case of acute myeloid leukemia p. 193
Atul Yashwant Gosavi, Ameya Puranik, Archi Agrawal, Nilendu C Purandare, Sneha Shah, Venkatesh Rangarajan, Ann Thomas
DOI:10.4103/ijnm.ijnm_236_20  
Myeloid sarcoma is a rare extramedullary manifestation of acute myeloid leukemia (AML) that often presents during remission or disease relapse. The most common site of relapse being, however, many rare sites has been reported in the existing literature. We are herewith presenting the case of a 27-year-old patient of AML who showed an unusual site of relapse on fluorodeoxyglucose positron emission tomography/computed tomography scan.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta
PICTORIAL ESSAY Top

18F-fluorodeoxyglucose positron emission tomography/computed tomography in postsurgical setting in head and neck cancers – A pictorial essay p. 195
Archi Agrawal, Anjali Prakash, Sayak Choudhury, MV Manikandan, Yash Jain, Nilendu Purandare, Ameya Puranik, Sneha Shah, Venkatesh Rangarajan
DOI:10.4103/ijnm.ijnm_204_20  
This pictorial essay depicts normal appearances, complications, and findings of residual and/or recurrent disease on fluorodeoxyglucose positron emission tomography/computed tomography (18F- FDG PET/CT) studies in the postsurgical setting. Reading and reporting 18F- FDG PET/CT in the postoperative scenario is demanding due to the multiple false positives seen during this period. This article which contains two parts will familiarize the readers with the normal appearance and pitfalls seen in 18F- FDG PET/CT studies during the postoperative period so as to avoid misinterpretations. This pictorial will discuss 18F- FDG PET/CT in the postoperative scenario in head and neck cancers.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta
TECHNICAL NOTE Top

Humanoid training phantom for positron emission tomography-computed tomography-guided percutaneous biopsy p. 201
Harmandeep Singh, Rajender Kumar, Ankit Watts, Nivedita Rana, Rakhee Vatsa, Bhagwant Rai Mittal
DOI:10.4103/ijnm.ijnm_221_20  
Positron emission tomography-computed tomography (PET-CT)-guided biopsy is being increasing practiced worldwide with indications in sampling of lung, abdominal, bone lesions, and among others. Training for PET-guided Interventions at select centers is carried out under supervision of an expert on real patients, similar to training for interventional radiology procedures. Simulation center training has been shown to be useful in improving efficiency of resident trainees. We report the development of concept, design, and practical application of a simplified humanoid training phantom for PET-guided interventions.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta
INTERESTING IMAGES Top

Paraneoplastic hyperfibrinolysis: detection of occult prostate cancer with 18F-fluorodeoxyglucose positron emission tomography-computed tomography p. 203
Punit Sharma
DOI:10.4103/ijnm.IJNM_195_20  
Hyperfibrinolysis caused by abnormal over-activation of the fibrinolytic system can be associated with occult cancer. We present an interesting case of a 48-year-old man with paraneoplastic hyperfibrinolysis, where 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography-computed tomography (PET-CT) was able to detect occult prostate-specific antigen-negative metastatic prostate cancer as the underlying etiology. This shows that while 18F-FDG PET-CT has overall poor sensitivity for prostate cancer, it can be useful in certain clinical situations.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Synchronous detection of extra-adrenal paraganglioma in a follow-up case of high-grade gastrointestinal stromal tumor p. 205
Azhar Husain, Anurag Jain, Harkirat Singh, Arun Hegde
DOI:10.4103/ijnm.IJNM_193_20  
Extraadrenal paragalionoma at multiple sites and its association with GIST is a rare finding. Although 18F-FDG PET-CT is not a modality of choice for primary diagnosis of paraganglioma, and its use is restricted for detection of metastases/multiple sites and disease staging. However, in this case that we describe here, its role in an already-proven/recurrent case of paraganglioma is emphasized by its simultaneous assessment of disease at several different sites.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Renal cell carcinoma mimicking with peritoneal carcinomatosis and krukenberg tumor: Diagnosis seen on fluorodeoxyglucose positron emission tomography-computed tomography p. 207
Navin Kumar, Kanak Lata, Sarthak Tripathy, Shamim Ahmed Shamim, Mukur Dipi Ray
DOI:10.4103/ijnm.IJNM_197_20  
Krukenberg tumor (KT) is a rare clinical entity with a mysterious origin. It originates most commonly from adenocarcinoma of the stomach. We present an interestingly rare case of this entity in renal cell carcinoma, revealed by 18F-fluorodeoxyglucose-positron emission tomography/computed tomography (PET/CT) scan. Ovarian cancers with diffuse peritoneal metastasis were considered the differential diagnosis of the disease, based on PET/CT. The potential efficacy of this functional imaging for KT is still in the exploratory phase, but its applications in diagnosis, disease prognostication, therapeutic response monitoring, and follow-up recurrence detection are superior than other imaging modalities.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Solitary subcutaneous tissue metastasis as recurrence in a case of primary angiosarcoma of breast: Findings on 18F-fluorodeoxyglucose positron emission tomography-computed tomography p. 210
Sarthak Tripathy, Sameer Rastogi, Sneha Prakash, Sreedharan Thankarajan Arun Raj, Sambit Sagar, Shamim Ahmed Shamim
DOI:10.4103/ijnm.IJNM_84_20  
Primary angiosarcomas of the breast are rare tumors, with a fatal outcome. We present a rare case of an operated primary angiosarcoma of the right breast in a 20-year-old female who showed disease recurrence in the right posterior arm subcutaneous tissue on 18F-fluorodeoxyglucose positron emission tomography-computed tomography after 1 year of surgery without any other visceral metastasis.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Ortner's syndrome associated with takayasu's aortoarteritis identified on fluorodeoxyglucose positron-emission tomography/computed tomography p. 212
Piyush Chandra, Satish Nath
DOI:10.4103/ijnm.ijnm_205_20  
Cardiovocal syndrome or Ortner's syndrome is hoarseness voice due to left recurrent laryngeal nerve palsy secondary to nerve compression caused by enlarged cardiovascular structures in the mediastinum. We present here an interesting positron-emission tomography/computed tomography image of a patient suspected to have Takayasu's aortoarteritis and presenting with hoarseness of voice.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

IgG4 related kidney disease with extra-renal involvement demonstrated on FDG PET/CT p. 214
Piyush Chandra, Satish Nath
DOI:10.4103/ijnm.ijnm_206_20  
Immunoglobulin G4 (IgG4)-related kidney disease is a relatively rare clinical entity and usually occurs as an extra-pancreatic manifestation of IgG4-related autoimmune pancreatitis. We describe here the imaging findings of a patient who presented with recurrent multiorgan IgG4-related disease, involving bilateral kidneys/ureters, proximal small bowel, and multiple abdominal and extra-abdominal lymph nodes.
[ABSTRACT]  [HTML Full text]  [PDF]  [Sword Plugin for Repository]Beta

Ga-68 DOTATATE positron emission tomography/computed tomography in a rare case of esthesioneuroblastoma p. 217
Priyanka Verma, Braj Kishore Singh, Inderdeep Singh, Brijesh Kumar Soni, Ramesh V Asopa
DOI:10.4103/ijnm.ijnm_207_20  
We describe the Ga-68 DOTATATE positron emission tomography/computed tomography (PET/CT) findings of a 51-year-old man, operated for right esthesioneuroblastoma. Postoperative Ga-68 DOTATATE PET/CT revealed focal uptake anterior to sphenoid ostium on the right paramedian side, suspicious for residual disease. Magnetic resonance imaging showed an enhancing lesion in posterosuperior nasal cavity on the right side extending into the right sphenoid sinus. He underwent re-surgery and adjuvant chemoradiotherapy. The histopathology revealed residual olfactory neuroblastoma. The follow-up Ga-68 DOTATATE PET/CT was negative. This case emphasizes the role of Ga-68 DOTATATE PET/CT in the management, especially in residual or recurrent disease and potential radiotheranostics for these rare tumors.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Paraneoplastic cerebellar degeneration: A dilemma resolved with positron emission tomography/computed tomography p. 220
Kanak Lata, Navin Kumar, Shamim Ahmed Shamim, Shipra Agarwal
DOI:10.4103/ijnm.IJNM_211_20  
The case of a 39-year-old woman presented with symptoms of progressive cerebellar degeneration for few months preceding by the diagnosis and treatment of breast cancer. The causative association was revealed with the strong positivity of antineuronal antibody. Because of the multidisciplinary team approach with surgery and adjuvant endocrine treatment, the patient did improve symptomatically and she is alive without any evidence of disease after 22 months following the initial diagnosis of the neurological disorder. Interestingly, neurological symptoms regressed partially after surgery. Early recognition and appropriate combined modality treatment of this rare presentation of breast cancer are imperative as it may be crucial for the disease outcome.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Parathyroid carcinoma – A malignant cause of metabolic skeletal super scan on fluorodeoxyglucose positron emission tomography-Computed tomography p. 223
Santhosh Sampath, Godwin Jeeva
DOI:10.4103/ijnm.ijnm_213_20  
Excessive abnormal tracer uptake in active tracer avid organ(s) with the suppression of physiological background tracer distribution is termed as super scan. Herein, we present an 18F-fluorodeoxyglucose positron emission tomography-computed tomography (FDG-PET/CT), where the metabolic pattern of skeletal super scan with coexistent parathyroid tumor was seen giving rise to the suspicion of primary hyperparathyroidism. It was subsequently diagnosed as a case of parathyroid carcinoma. Very high levels of serum parathormone in parathyroid carcinoma lead to accelerated bone turn over resulting in metabolic skeletal superscan in FDG-PET/CT which is seldom observed in parathyroid adenoma.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Advantage of hybrid 18F-fluoride positron emission tomography/computed tomography to diagnose malignant rib invasion by pleural metastasis in a background of reactive periostitis p. 226
Sampath Santhosh, Godwin Jeeva
DOI:10.4103/ijnm.ijnm_215_20  
Diffuse osteoblastic activity in the ribs on bone scan is seen in association with pleural thickening. Irrespective of the pleural pathology, this represents benign finding caused by pleural hyperemia or reactive periostitis, with preserved cortical integrity. However, malignant involvement of the ribs can occur by local invasion of pleural malignancy causing cortical lysis. Herein, we describe the 18F-fluoride positron emission tomography/computed tomography findings of reactive periostitis of the ribs in pleural metastasis and emphasize the advantage of hybrid imaging in detecting local malignant tumor invasion superimposed in such condition.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

68-gallium prostate-specific membrane antigen positron emission tomography/computed tomography detects rare testicular metastasis from prostate cancer p. 229
Yash Jain, Archi Agrawal, Ganesh Bakshi, Amit Joshi, Santosh Menon, Gagan Prakash, Nilendu Purandare, Ameya Puranik, Sneha Shah, Venkatesh Rangarajan
DOI:10.4103/ijnm.ijnm_224_20  
Testicular metastases from solid tumors is a rare entity. We describe one such case where a patient on treatment for prostate cancer presented with a right scrotal swelling. For restaging, whole-body 68-gallium prostate-specific membrane antigen positron emission tomography/computed tomography (PET/CT) was performed. Fused PET/CT images demonstrated intense uptake in the testicular lesion. Unique anatomic and functional information provided by hybrid PET/CT helped in reliably establishing the testicular mass as the site of metastases from prostate cancer, which had a major impact on patient management.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

Pelvic venous thromboembolism leading to pulmonary embolism in a case of chondroblastic osteosarcoma detected on FDG PET/CT p. 231
Anjali Prakash, Ameya D Puranik, Nilendu C Purandare, Archi Agrawal, Sneha Shah, Venkatesh Rangarajan
DOI:10.4103/ijnm.ijnm_239_20  
Chondroblastic osteosarcoma is an uncommon subtype of osteosarcoma, constituting about 25% of all osteosarcoma cases. It has shown high propensity for developing tumor thrombi and thromboembolism, with poor overall survival rate. Differentiation between tumor thrombus and bland thrombus is an important factor in making treatment decisions. 18 F fluorodeoxyglucose positron emission tomography/computed tomography plays a very important role in detecting and differentiating bland thrombus from tumor thrombus.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta

18F-fluorodeoxyglucose positron-emission tomography/computed tomography detected inguinal lymph nodal metastasis from hepatocellular carcinoma p. 233
Arun Visakh Ramachandran Nair, Thara Pratap, Pushpa Mahadevan, Roy J Mukkada, Abhishek Yadav, Raja Senthil
DOI:10.4103/ijnm.ijnm_241_20  
Hepatocellular carcinoma (HCC) usually metastasizes to the regional abdominal lymph node, lungs, and bones. Nonregional lymph node involvement by HCC in the absence of regional lymph nodes is rare. We describe the 18F-fluorodeoxyglucose positron-emission tomography-computed tomography findings of an HCC patient with histopathologically proven inguinal lymph nodal metastasis in the absence of regional lymph nodal metastases.
[ABSTRACT]  [HTML Full text]  [PDF]  [Mobile Full text]  [EPub]  [Sword Plugin for Repository]Beta
  Feedback 

Submit articles
Most popular articles
Joiu us as a reviewer
Email alerts
Recommend this journal