Clinical application of syngo WARP in the metallic prostheses MR imaging / 中华放射学杂志

ABSTRACT

Objective To investigate the value of syngo WARP technology for spine MR imaging in patients with metallic prosthesis.Methods Twenty-five patients with metallic prosthesis in cervical spine or lumbar spine were prospectively included in this study.Both conventional MR sequences and optimized sequences with syngo WARP were applied in all patients.Acquisition time and image quality of two sequences were compared using a paired t test.Results All patients were examined successfully.Scanning time of cervical spine was 8 min 16 s vs.12 min 45 s for conventional sequences and syngo WARP optimized sequences respectively,with a significant difference (t =7.963,P ＜ 0.01).Scanning time of lumbar spine was longer by syngo WARP optimized sequences compared with conventional sequences (11 min 53 s vs.9 min 16 s),with a significant difference (t =4.904,P ＜ 0.01).However,image quality was better for syngo WARP optimized sequences compared with conventional sequences (4.22 ± 0.67 vs.3.56 ± 0.53 ;t =3.364,P =0.002).STIR with syngo WARP could optimize the signal loss of metallic prosthesis surrounding tissues,and significantly improve image distortion and blurring compared to the conventional sequence.Conclusion Syngo WARP technique could effectively reduce metal artifacts and better display metal implant surrounding tissue and anatomical structure with potential clinical value.