Quantification of human splenic blood flow (quantitative measurement of splenic blood flow with H2(15)O and a dynamic state method: 1).

Abstract:

:Positron emission tomography (PET) by means of a dynamic state method and H2(15)O was performed to quantify splenic blood flow in 20 patients who had no hepatic functional disorders. Non-linear regression analysis was applied to determine splenic blood flow. In calculating arterial input function for the spleen, our original exponential method was used to facilitate computerization. Mean splenic blood flow per 100 g of spleen (SBF) was 168.0 ml/min/100 g with a standard error (SE) of 12.4 ml/min. The mean spleen-blood partition coefficient for water (rho) was 0.767 with a SE of 0.020. Significant correlations were noted between the values for SBF obtained by the exponential method and linear method in which individual increasing values for arterial 15O concentration were used rectilinearly (r = 0.96, p < 0.005) and also between the values for rho obtained by the two methods (r = 0.95, p < 0.005). In order to validate the application of a one compartment model to an organ with a large blood volume such as the spleen, a further experiment was performed with a water flow model simulating splenic circulation. We succeeded in quantifying regional splenic blood flow by PET. It was thought that the quantification of splenic blood flow by our method would be beneficial in the study of splenic circulation, which is expected to be altered under conditions of portal hypertension, liver dysfunction and shock, etc.

journal_name

Ann Nucl Med

authors

Oguro A,Taniguchi H,Koyama H,Tanaka H,Miyata K,Takeuchi K,Inaba T,Nakahashi H,Takahashi T

doi

10.1007/BF03164705

subject

Has Abstract

pub_date

1993-11-01 00:00:00

pages

245-50

issue

4

eissn

0914-7187

issn

1864-6433

journal_volume

7

pub_type

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