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Evaluation of Portal Circulation by the Scintillation Camera

Palack University, Olomouc, Czechoslovakia

Correspondence: For reprints contact: Josef Kuba, Dept. of Nuclear Medicine, University Hospital, Pavlov Str. 6, Olomouc, Czechoslovakia.

ABSTRACT

The authors describe a new technique of radionuclide splenoportography, i.e., injection of 5–10 mCi of ⁹⁹TcO₄^– into the spleen and followup of the passage of the radioactive bolus through the portal vein bed by means of a scintillation camera combined with a video tape recorder and a multichannel analyzer. Simultaneously, ¹³¹I-MAA is injected into the spleen. The oscilloscope of the analyzer serves to assess the ¹³¹I-MAA deposition in the lungs which indicates the presence of portal-systemic shunts. The experiences in 61 subjects show that the method can be used for the detection of collateral circulation and its extension and localization. It is also useful for the appraisal of the functional flow of portal blood through the liver, for the diagnosis of prehepatic portal hypertension, and for the evaluation of the patency of the surgically introduced shunt.