Scintigraphic analysis of hemodynamics in a patient with a single large pulmonary arteriovenous fistula.
A pulmonary perfusion study was performed on a 54-year-old man with a single large pulmonary arteriovenous fistula (aneurysmal type) using Tc-99m MAA. On the static imaging, a defect corresponding to the location of the mass and right-to-left shunt was clearly documented. Decreased uptake of Tc-99m MAA in the lung field surrounding the lesion was observed and was thought to reflect a "steal" of blood flow by the fistula. One advantage of using radionuclide angiography with Tc-99m MAA rather than with Tc-99m pertechnetate was that it more easily provided a time-activity curve that added useful quantitative information about the altered pulmonary hemodynamics.
Suga
K
K
Department of Radiology, Yamaguchi University School of Medicine, Japan.
Kuramitsu
T
T
Yoshimizu
T
T
Nakanishi
T
T
Yamada
N
N
Utsmi
H
H
D001164:Arteriovenous Fistula / Q000151:congenital / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000002:abnormalities*; D011652:Pulmonary Circulation / Q000502:physiology*; D011667:Pulmonary Veins / Q000002:abnormalities*; D011875:Radionuclide Angiography; D013668:Technetium Tc 99m Aggregated Albumin
D013668:Technetium Tc 99m Aggregated Albumin