Application of different counting systems in measuring localised retention in the entero-hepatic circulation

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Abstract
The use of labeled bile salt retention is likely to be a major new technique in assessing the function of the terminal ileum. Papers to date have described 2 techniques to measure the 100% and the 7-day retention values. These use whole body counters or uncollimated gamma cameras. The use was compared of simple probe systems with an uncollimated gamma camera for the retention measurements. There was no significant difference in the results obtained with any of these systems. Simple probe measurements can provide a precise and highly reproducible assessment of bile salt retention which greatly increases the availability of this test.