Towards a five-minute comprehensive cardiac MR examination using highly accelerated parallel imaging with a...

Area of Science:

• Cardiovascular Imaging
• Medical Imaging Technology
• Radiology

Background:

• Standard cardiac MRI protocols are time-consuming, limiting patient throughput and accessibility.
• Developing accelerated imaging techniques is crucial for improving efficiency in cardiovascular diagnostics.

Purpose of the Study:

• To assess the feasibility of a 5-minute comprehensive whole-heart MRI protocol.
• To compare the image quality and diagnostic performance of an accelerated protocol against a standard protocol.

Main Methods:

• A 5-minute accelerated whole-heart MRI protocol using 6-8-fold parallel imaging was developed.
• Twenty patients underwent both the accelerated and standard MRI protocols.
• Image quality was evaluated by two blinded readers using a 5-point Likert scale.

Main Results:

• The accelerated protocol significantly reduced scan time (1.82 min vs. 28.99 min).
• Coronary artery imaging (CAI) showed comparable diagnostic quality between protocols (90%).
• Perfusion (PERF), CINE, and LGE showed reduced, though often still diagnostic, image quality with the accelerated protocol.

Conclusions:

• A 5-minute comprehensive whole-heart MRI protocol is technically feasible.
• Accelerated imaging offers significant time savings but requires further optimization for perfusion, CINE, and LGE.
• Highly parallel imaging technology enables high-resolution cardiac MRI within a significantly reduced timeframe.