Thallium and FDG uptake by atelectasis with bronchogenic carcinoma.
We report a case of bronchogenic carcinoma with atelectasis studied by T1-SPECT and FDG-PET. In the carcinoma, abnormally high uptake of T1 and FDG were detected, but in the region of atelectasis, an abnormally high uptake of T1 with a relatively low uptake of FDG were observed. On quantitative analyses, the T1 retention indexes of the tumor and atelectasis were 29.7 and 42.0. The mean SUVs of FDG of the tumor and the atelectasis were 8.92 and 1.28. T1-SPECT could not distinguish the atelectasis from the carcinoma. FDG-PET was superior to T1-SPECT in this case in detecting malignancy and distinguishing it from atelectasis.
Kawabe
J
J
Division of Nuclear Medicine, Osaka City University Medical School, Osaka, Japan. kawabe@msic.med.osaka-cu.ac.jp
Okamura
T
T
Shakudo
M
M
Koyama
K
K
Wanibuchi
H
H
Shimonishi
Y
Y
Ochi
H
H
Yamada
R
R
D001692:Biological Transport; D002283:Carcinoma, Bronchogenic / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics*; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D001261:Pulmonary Atelectasis / Q000000981:diagnostic imaging* / Q000209:etiology; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics*; D013794:Thallium Radioisotopes / Q000493:pharmacokinetics*; D014055:Tomography, Emission-Computed; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed
D019275:Radiopharmaceuticals; D013794:Thallium Radioisotopes; D019788:Fluorodeoxyglucose F18