A comparison between the use of a shadow shield whole-body counter and an uncollimated gamma camera in the assessment of the seven-day retention of SeHCAT

Abstract
The 7-day retention of the [diagnostic] radioisotope bile salt analog SeHCAT (75Se-23-selena-25-homotaurocholate were compared by whole body counting and by uncollimated .gamma. camera measurement, in phantoms and in 25 patients with inflammatory bowel disease. The results correlate with a linear r of 0.96. An uncollimated .gamma. camera can be used to assess bile acid malabsorption when a whole body radioactivity monitor is not available.