Technique of scanning for Meckel's diverticulum.

Area of Science:

• Nuclear Medicine
• Pediatric Surgery
• Diagnostic Imaging

Background:

• 99mTc-pertechnetate scintigraphy is a valuable tool for diagnosing Meckel's diverticula, particularly when ectopic gastric mucosa causes bleeding.
• Ectopic gastric mucosa secretes 99mTc-pertechnetate, allowing for its detection via scanning.

Observation:

• Normal gastric and salivary gland secretions can pool in the gut, mimicking a Meckel's diverticulum on scans.
• 99mTc-pertechnetate uptake in the bowel can occur rapidly, even without a Meckel's diverticulum.
• Sequential gamma camera imaging aids in differentiation but is not definitive.

Findings:

• Continuous nasogastric suction effectively eliminates false-positive findings caused by pooled secretions.
• Rapid sequential imaging is helpful but insufficient on its own to distinguish true positives from false positives.

Implications:

• A diagnostic protocol combining continuous nasogastric suction with sequential gamma camera imaging is recommended for accurate Meckel's diverticulum detection.
• This approach improves diagnostic accuracy by mitigating interference from physiological secretions.