High-resolution magnetic resonance imaging of the triangular fibrocartilage complex using compressed sensing...

Area of Science:

• Radiology
• Medical Imaging
• Orthopedics

Background:

• The triangular fibrocartilage complex (TFCC) is crucial for wrist stability.
• Accurate MRI visualization of the TFCC is essential for diagnosing wrist injuries.
• Compressed Sensing-Sensitivity Encoding (CS-SENSE) is an advanced MRI technique that can accelerate image acquisition.

Purpose of the Study:

• To determine the optimal MRI sequence for imaging the TFCC using CS-SENSE.
• To compare the diagnostic performance of different spatial resolution sequences with and without CS-SENSE.

Main Methods:

• T2-weighted 3D fast field echo MRI sequences were acquired from 13 healthy volunteers.
• Sequences included: original, high-resolution (HR), and super-high-resolution (S-HR), with and without CS-SENSE.
• Qualitative assessment of motion artifacts and TFCC structure visualization, and quantitative analysis of signal intensity and contrast were performed.

Main Results:

• HR (CS-SENSE) and S-HR (CS-SENSE) sequences demonstrated improved visualization of specific TFCC ligaments compared to the original sequence.
• Overall image quality and motion artifact rates were comparable across sequences.
• The original sequence exhibited higher relative signal intensity and contrast in bone marrow and cartilage compared to CS-SENSE sequences.

Conclusions:

• The HR (CS-SENSE) sequence provides the best visualization scores for TFCC imaging.
• Despite lower signal intensity and contrast, HR (CS-SENSE) offers diagnostically sufficient image quality.
• The HR (CS-SENSE) sequence shows clinical utility for TFCC MRI evaluation.