Gadofosveset trisodium-enhanced MR angiography for detection of lower gastrointestinal bleeding

Area of Science:

• Medical Imaging
• Gastroenterology
• Radiology

Background:

• Acute lower gastrointestinal (LGI) bleeding is a common clinical problem.
• Conventional diagnostic methods for LGI bleeding have limitations.

Purpose of the Study:

• To evaluate the utility of Gadofosveset trisodium-enhanced magnetic resonance angiography (MRA) for detecting and localizing acute LGI bleeds.

Main Methods:

• Four patients with suspected LGI bleeding underwent MRA.
• Results were confirmed using computed tomography angiography, endoscopy, tagged-red blood cell scan, or digital subtraction angiography.

Main Results:

• MRA successfully detected an active rectal bleed in one patient.
• The remaining three patients were true negatives, with no active bleeding confirmed by other modalities.

Conclusions:

• Gadofosveset trisodium-enhanced MRA may be a viable alternative for acute LGI bleed detection, especially when nuclear scintigraphy is not feasible.
• Further research with larger patient cohorts is warranted to confirm these preliminary findings.