Work in progress. Gastrointestinal ulcerations: detection using a technetium-99m-labeled ulcer-avid agent.

Area of Science:

• Nuclear medicine
• Gastroenterology
• Radiopharmaceutical development

Background:

• Sucralfate is an ulcer-adherent medication.
• Technetium-99m (Tc-99m) is a widely used radioisotope for medical imaging.

Purpose of the Study:

• To evaluate the stability and sensitivity of Tc-99m-labeled sucralfate for detecting gastrointestinal ulcers.
• To assess the clinical utility of this novel radiotracer.

Main Methods:

• Development of a method for labeling sucralfate with Tc-99m.
• In vivo studies in rabbits with experimentally induced gastric ulcers.
• Clinical evaluation in human subjects with suspected gastrointestinal ulcer disease.

Main Results:

• Tc-99m-labeled sucralfate demonstrated in vivo stability and good sensitivity in preliminary studies.
• Eight experimentally produced gastric ulcers in rabbits were successfully visualized.
• In seven human studies, four true-positive and three true-negative results were obtained.

Conclusions:

• Tc-99m-labeled sucralfate is a stable and sensitive agent for visualizing gastrointestinal ulcers.
• This radiotracer may offer significant clinical advantages for evaluating gastrointestinal ulcer disease and mucosal integrity loss.