Objective: To compare conventional sensitivity encoding turbo spin-echo (SENSE-TSE) with
compressed sensing plus SENSE turbo spin-echo (CS-TSE) in lumbar vertebrae magnetic resonance
Methods: This retrospective study of lumbar vertebrae MRI included 600 patients; 300
patients received SENSE-TSE and 300 patients received CS-TSE. The SENSE acceleration factor was 1.4
for T1WI, 1.7 for T2WI, and 1.7 for PDWI. The CS total acceleration factor was 2.4, 3.6, 4.0, and 4.0 for
T1WI, T2WI, PDWI sagittal, and T2WI transverse, respectively. The image quality of each MRI
sequence was evaluated objectively by the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR)
and subjectively on a five-point scale. Two radiologists independently reviewed the MRI sequences of the
300 patients receiving CS-TSE, and their diagnostic consistency was evaluated. The degree of
intervertebral foraminal stenosis and nerve root compression was assessed using the T1WI sagittal and
T2WI transverse images.
Results: The scan time was reduced from 7 min 28 s to 4 min 26 s with CSTSE. The median score of nerve root image quality was 5 (p > 0.05). The diagnostic consistency using
CS-TSE images between the two radiologists was high for diagnosing lumbar diseases (κ > 0.75) and for
evaluating the degree of lumbar foraminal stenosis and nerve root compression (κ = 0.882). No
differences between SENSE-TSE and CS-TSE were observed for sensitivity, specificity, positive
predictive value, or negative predictive value.
Conclusion: CS-TSE has potential for diagnosing lumbar
vertebrae and disc disorders.