Shoulder PROPELLER MRI with Deep learning-based reconstruction: image quality and agreement between standard and accelerated sequence

Synopsis

Although the shorter scan time enabled by DLRecon has potential to reduce motion related image degradation, it cannot remove or mitigate such artifacts. The periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) or similar techniques can reduce motion artifacts in shoulder MRI, however usually takes a longer time to acquire. Recently, DLRecon for PROPELLER has been developed. Accelerated PROPELLER sequence with DLRecon showed improved image quality and comparable interobserver agreement for shoulder pathology compared to standard PROPELLER acquisition with conventional reconstruction, despite the shorter scan time (45% reduction).