Panel Disdussion

3rd International Congress of of Nuclear Medicine & & 15th 15th Iranian Annual Annual Congress of
Congress of Nuclear Medicine
Shahid Beheshti Shahid Beheshti University University of Medical of Medical Sciences Sciences 19-21 19-21 May May 2011
THE EFFECT OF BARIUM SULFATE IN REDUCTION OF SUB
DIAPHRAGMATIC ACTIVITY IN MYOCARDIAL PERFUSION
IMAGING
Alireza Mehdizadeh, Farshid Gheisari, Mehrosadat Alavi
Shiraz University of Medical Sciences, Nuclear Medicine Department
Background: The aim of this study was to investigate the effect of
barium sulfate in reduction of sub-diaphragmatic activity in
technetium 99m sestamibi myocardial perfusion scan.
Methods: This study included 15 patients (6 male, 9 female)
randomly selected from whom referred for 2 days rest-stress Tc-99m
myocardial perfusion scan. All patients underwent stress phase of
scan , after stress phase a planar static scan(for 5 min) from
abdominal area of patients obtained, after that all patients were
given 80 gr of barium sulfate , solved in 200 cc water , with 100 cc
room temperature water and second planar static scan(for 5 min)
obtained from them. The effect of barium sulfate on sub cardiac
activity was evaluated both visually and quantitatively. After
obtaining two planar static images, an area of about 1404 pixels
(mean 1404.06 pixels) in left upper quadrant of abdomen, adjacent
to inferior wall of heart in gastric area was selected in both images in
same area of selection.
Results: There was a significant reduction in the sub cardiac count
per pixel in barium group compared to control group (p value <
0.001).
Conclusion: The findings indicate that filling of the stomach with
barium sulfate, as a low price, safe and worldwide available oral
contrast, resulted in an improvement in the image quality by
decreasing the adjacent gut activity.
Keywords: Myocardial perfusion, Barium sulfate, Sub-diaphragmatic
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