Non-contrast MRA using an inflow-enhanced, inversion recovery SSFP technique in pediatric abdominal imaging

Area of Science:

• Medical Imaging
• Pediatric Radiology
• Magnetic Resonance Angiography

Background:

• Abdominal contrast-enhanced MR angiography (CE-MRA) is standard in pediatric care but faces challenges.
• Pediatric imaging difficulties include patient motion, IV access issues, and lack of breath-holding capability.
• Concerns about gadolinium-based contrast agents in renal impairment drive interest in non-contrast methods.

Purpose of the Study:

• To demonstrate the utility of non-contrast MR angiography (NC-MRA) techniques in pediatric abdominal imaging.
• To showcase an optimized 3-D NC-MRA technique developed at our institution.

Main Methods:

• Utilized an inflow-enhanced, inversion recovery balanced steady-state free precession (b-SSFP) sequence.
• Optimized 3-D NC-MRA techniques specifically for abdominal imaging in children.
• Focused on overcoming pediatric-specific imaging challenges without contrast agents.

Main Results:

• Successfully demonstrated the utility of the b-SSFP NC-MRA technique for abdominal imaging.
• The optimized technique addresses challenges associated with pediatric CE-MRA.
• Provided a viable non-contrast alternative for pediatric abdominal angiography.

Conclusions:

• The demonstrated inflow-enhanced, inversion recovery b-SSFP NC-MRA technique is effective for pediatric abdominal imaging.
• This non-contrast approach offers a valuable alternative, mitigating risks associated with contrast agents.
• Further validates the use of NC-MRA in pediatric populations, especially those with renal concerns.