Evaluating the Value of SEMAC-VAT with Compressed SENSE Technology in MRI Metal Artifact Reduction in Patients with Lumbar Metal Implants

Motivation: SEMAC-VAT improves imaging around metallic implants but has prolonged acquisition times. Compressed SENSE (CS) significantly reduces scan times, may address this issue. Goal(s): To evaluate the clinical utility of CS combined with SEMAC-VAT for patients with lumbar metal implants and identify the optimal CS factor. Approach: SEMAC-VAT T2 imaging utilized parallel acquisition and CS (CS4, CS6). Comparisons included implant artifact area, clarity, and diagnostic confidence. A paired t-test and Wilcoxon signed-rank test assessed acceleration factors and image quality scores. Results: SEMAC-VAT technology integrated with CS offers a promising solution for metal artifact reduction. The CS factor 4 was recommended. Impact: SEMAC-VAT technology integrated with Compressed SENSE provides a promising solution for metal artifact reduction in patients with lumbar metal implants within clinical acceptable time.