Technetium leukocyte imaging in inflammatory bowel disease

Area of Science:

• Nuclear Medicine
• Pediatric Gastroenterology
• Diagnostic Imaging

Background:

• Inflammatory bowel disease (IBD) diagnosis and monitoring in children require accurate imaging.
• Traditional methods like contrast radiology have limitations in assessing disease activity and extent.
• Technetium-99m white blood cell ((99m)Tc-WBC) imaging offers a potential alternative for evaluating pediatric IBD.

Purpose of the Study:

• To evaluate the utility of (99m)Tc-WBC imaging in the assessment of pediatric inflammatory bowel disease (IBD).
• To compare the effectiveness of (99m)Tc-WBC imaging with other diagnostic modalities for IBD in children.
• To determine the role of (99m)Tc-WBC imaging in the initial evaluation and follow-up of pediatric IBD cases.

Main Methods:

• Utilized (99m)Tc-WBC imaging for initial evaluation and follow-up of over 400 children with IBD.
• Compared (99m)Tc-WBC imaging findings with contrast radiology, endoscopy, and colonoscopy.
• Assessed the ability of (99m)Tc-WBC imaging to determine the extent, activity, and location of intestinal inflammation.

Main Results:

• (99m)Tc-WBC imaging demonstrated superiority over contrast radiology in assessing IBD extent and activity.
• High correlation observed between (99m)Tc-WBC imaging findings and endoscopic results.
• (99m)Tc-WBC imaging successfully confirmed ileitis or right-sided colitis when other methods were inconclusive.
• The technique was useful in differentiating Crohn's disease from ulcerative colitis and as an initial screening tool to exclude IBD.

Conclusions:

• (99m)Tc-WBC imaging is a valuable, noninvasive tool for evaluating pediatric IBD, offering a precise snapshot of inflammation.
• It correlates well with established methods like endoscopy and can be superior to contrast radiology.
• (99m)Tc-WBC imaging is practical, safe, requires no bowel preparation, and involves less radiation exposure than CT or contrast radiology.