FDG-PET may be able to provide important information for evaluating the malignancy of gallbladder tumors.

O and FDG PET showed a significant negative correlation between MRO2 and SUV in human liver tumours. In addition, MRO2 depends on Ft rather than on OEF.

Pneumatosis intestinalis (PI) is an uncommon disorder defined as multiple foci of gas within the intestinal wall. Despite recognition of an increasing number of cases of PI, the optimal management strategy, whether through surgical or other means, remains controversial. The present report describes the case of a patient with PI who underwent exploratory laparotomy without specific findings and who ultimately died due to extensive intestinal hemorrhage that was possibly triggered by surgery.

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The reproducibility of measurement of regional splenic blood flow by dynamic positron emission tomography (PET) using [15O]water was evaluated. In 19 patients, the correlation between the first and second of two serial dynamic measurements was significant (P=1.78 x 10(-6); r=0.858). The regression equation was y = 1.06x, and the slope of the line described had a 95% confidence interval of 0.09. The error apparent between the two measurements was 0.129 (95% confidence interval 0.059). The results demonstrated sufficiently good reproducibility for measurements of regional splenic blood flow with PET and [15O]water to suggest use of this method for serial measurements intended to detect change, including drug effects.