Findings of hepatopulmonary syndrome on breath-hold perfusion SPECT-CT fusion images.
Pulmonary perfusion SPECT-CT fusion images were used to characterize CT manifestations of intrapulmonary arteriovenous communications (AVC) causing right-to-left shunt and hepatopulmonary syndrome (HPS). After scanning the whole body and obtaining multiple view images of the lung, deep-inspiratory breath-hold (DIBrH) SPECT was obtained in 2 patients with HPS, which was automatically and three-dimensionally co-registered with DIBrH CT. In both patients, the whole body scan depicted systemic organs and confirmed the existence of right-to-left shunt. DIBrH SPECT-CT fusion images showed that perfusion defects were predominantly located at subpleural reticulo-nodular opacities and/or dilated vessels in the lung base. Subpleural reticulo-nodular opacities and/or dilated vessels in the lung base appear to be characteristic CT manifestation of intrapulmonary AVC in HPS.
Suga
Kazuyoshi
K
Department of Radiology, St. Hill Hospital, 1462-3 Nishikiwa, Ube, Yamaguchi, 755-0151, Japan. sugar@sthill-hp.or.jp
Kawakami
Yasuhiko
Y
Iwanaga
Hideyuki
H
Tokuda
Osamu
O
Matsunaga
Naofumi
N
D000368:Aged; D020065:Hepatopulmonary Syndrome / Q000000981:diagnostic imaging* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008168:Lung / Q000098:blood supply / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000503:physiopathology; D011667:Pulmonary Veins / Q000503:physiopathology; D012119:Respiration; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed