Info

Where:

All activity measurements are derived from regions of interest placed on digitized images. Background activity is normalized to the area of the gallbladder region and

EF =

Ejection fraction

A =

Initial gallbladder activity

Bga =

Initial background activity

B=

Post contraction gallbladder activity

Bgb =

Post contraction background activity

All activity measurements are derived from regions of interest placed on digitized images. Background activity is normalized to the area of the gallbladder region and

Figure 5. Normal 99mTc-IDA study. Anterior and right lateral images immediately after injection (a) show uniform activity throughout the liver. Activity in the heart is low-grade with normal liver function. By 30 minutes (b) the biliary tree and bowel are seen. The normal gallbladder (arrow) is seen within one hour (c). A right lateral view is important to prevent potential confusion between activity in the gallbladder (anteriorly placed) and duodenum (posteriorly placed) on the anterior view alone.

Figure 5. Normal 99mTc-IDA study. Anterior and right lateral images immediately after injection (a) show uniform activity throughout the liver. Activity in the heart is low-grade with normal liver function. By 30 minutes (b) the biliary tree and bowel are seen. The normal gallbladder (arrow) is seen within one hour (c). A right lateral view is important to prevent potential confusion between activity in the gallbladder (anteriorly placed) and duodenum (posteriorly placed) on the anterior view alone.

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