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• Clinical Article •
Study on metal artifacts reduction by review of MAVRIC-SL sequence after internal fixation of fracture
ZHU Jingyi  CHANG Jian  ZHANG Zitian  LI Songbai 

Cite this article as: Zhu JY, Chang J, Zhang ZT, et al. Study on metal artifacts reduction by review of MAVRIC-SL sequence after internal fixation of fracture. Chin J Magn Reson Imaging, 2020, 11(4): 296-299. DOI:10.12015/issn.1674-8034.2020.04.011.


[Abstract] Objective: Investigate the effect of metal artifact reduction multi acquisition with variable resonance image combination slab selectivity (MAVIRC-SL) sequence on MRI of patients with metal implants after fracture surgery, in order to evaluate its clinical application value.Materials and Methods: Thirty-two patients with metal implants after fracture were recruited. The conventional sequences and MAVRIC-SL were scanned. The degree of artifact and its influence on the diagnosis of surrounding structure, the effect of fat suppression and the diagnostic confidence were compared and analyzed.Results: Compared with the conventional sequences, MAVRIC-SL had smaller metal artifacts and the quality of diagnosis is less damaged [conventional sequences: 5(4, 5); MAVRIC-SL: 2(2, 3); P<0.01]; MAVIRC-SL could achieve better fat suppression effect [conventional sequence: 2(1, 2); MAVRIC-SL: 2(2, 3); P<0.01]; MAVRIC-SL has higher diagnostic confidence [reviewer 1∶3(3, 4); reviewer 2∶3(2.25, 4); κ=0.79].Conclusions: MAVRIC-SL can effectively reduce metal artifacts and obtain better fat suppression images. It also has higher diagnostic confidence. MAVRIC-SL is more helpful for the diagnosis of bone and joint lesions after internal fixation.
[Keywords] fracture；internal fixation；complication；metal artifact；magnetic resonance imaging；MAVRIC-SL

ZHU Jingyi Department of Radiology, the First Hospital of China Medical University, Shenyang 110001, China

CHANG Jian Department of Radiology, the First Hospital of China Medical University, Shenyang 110001, China

ZHANG Zitian Department of Radiology, the First Hospital of China Medical University, Shenyang 110001, China

LI Songbai* Department of Radiology, the First Hospital of China Medical University, Shenyang 110001, China

*Correspondence to: Li SB, E-mail: songbaili001@163.com

Conflicts of interest   None.

Received  2019-12-09
Accepted  2020-02-18
DOI: 10.12015/issn.1674-8034.2020.04.011
Cite this article as: Zhu JY, Chang J, Zhang ZT, et al. Study on metal artifacts reduction by review of MAVRIC-SL sequence after internal fixation of fracture. Chin J Magn Reson Imaging, 2020, 11(4): 296-299. DOI:10.12015/issn.1674-8034.2020.04.011.

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