This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Currie, G. M. Articles by Wheat, J. M. Search for Related Content PubMed PubMed Citation Articles by Currie, G. M. Articles by Wheat, J. M.

Improved Detection and Localization of Lower Gastrointestinal Hemorrhage Using Subtraction Scintigraphy: Clinical Evaluation

School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, Australia

View larger version (124K): [in this window] [in a new window]   FIGURE 1.  (Top) Study showing accumulation of activity that 3 observers identified on conventional scintigraphy as a bleed. One observer thought the bleed to originate in small bowel; another observer, in ascending colon; and a third observer, in cecum. (Bottom) Alternate sequential subtraction scintigraphy demonstrates that activity remains constant over time (indicated by absence of activity), neither increasing in intensity (no additional bleeding) nor moving within bowel. Activity most likely represents a vessel consistent with prominent superficial vasculature.

View larger version (58K): [in this window] [in a new window]   FIGURE 2.  Study showing accumulation of activity superimposed over blood vessels on early conventional scintigrams (top). This finding may be viewed as a normal variant or tortuosity. Alternate sequential subtraction scintigraphy (bottom) clearly shows presence and location of bleed site.