Indian Journal of Nuclear Medicine
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PICTORIAL ESSAY
Year : 2018  |  Volume : 33  |  Issue : 4  |  Page : 312-316

Acquired whole-lung mismatched perfusion defects on pulmonary ventilation/perfusion scintigraphy


1 Department of Radiology, Mayo Clinic, Jacksonville, Florida, USA
2 Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri, USA

Correspondence Address:
Andrew W Bowman
Department of Radiology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, Florida 32224
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijnm.IJNM_60_18

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Despite the increasing use of computed tomography pulmonary angiography to evaluate for pulmonary embolism (PE), ventilation/perfusion (V/Q) scintigraphy is still a fairly common examination. A rare finding on V/Q scintigraphy is whole-lung mismatched perfusion defect. Although this finding can occur with PE, it has an important, limited differential diagnosis. In this pictorial essay, we describe different causes of acquired whole-lung mismatched perfusion defect.


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