Meckel scan
Pronunciation: MEK-el scan
A nuclear medicine study using technetium-99m pertechnetate to detect ectopic gastric mucosa, primarily for diagnosing Meckel diverticulum.
Full Definition
A Meckel scan is a specialized nuclear medicine examination that uses technetium-99m pertechnetate, which is preferentially taken up by gastric mucosa, to identify ectopic gastric tissue. This study is primarily performed to diagnose Meckel diverticulum, which contains gastric mucosa in approximately 50% of cases. The scan requires careful preparation including histamine H2 receptor blockers to enhance uptake and gastric stimulation protocols. Positive studies show focal uptake in the right lower quadrant that appears simultaneously with normal gastric uptake.
Usage
Usage note: Emphasize the timing of uptake relative to normal gastric activity.
In Context
- "Meckel scan revealed focal uptake in the right iliac fossa consistent with ectopic gastric mucosa." — Nuclear medicine report