Experimental Study of MAR Algorithm in Metal Artifact Removal of CT Simulator.
10.3969/j.issn.1671-7104.2020.01.005
- Author:
Fan BI
1
;
Wenyong TU
1
;
Huifeng SHI
1
;
Kun FENG
1
;
Wenhui FAN
1
;
Haisheng HU
1
Author Information
1. Dept. of Oromaxillofacial Head and Neck Oncology, the Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200011. ##Email#.
- Publication Type:Journal Article
- Keywords:
CT simulator;
MAR algorithm;
metal artifacts;
phantom
- MeSH:
Algorithms;
Artifacts;
Metals;
Phantoms, Imaging;
Titanium;
Tomography, X-Ray Computed
- From:Chinese Journal of Medical Instrumentation
2020;44(1):24-27
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To explore the application value of MAR algorithm in metal artifact removal of CT simulator.
METHODS:CT phantom with titanium plate was scanned using conventional algorithms and MAR algorithms, respectively. Artifact index(AI), contrast-to-noise ratio(CNR) and AI values at different slices were used to analyze the artifact images.
RESULTS:In artifact index, MAR algorithm (10.28±2.60) is significantly lower than conventional algorithm (20.65±5.04); In contrast-to-noise ratio index, MAR algorithm (7.81±1.12) is better than conventional algorithm (5.61±1.36). The above indicators were statistically significant in both algorithms (P<0.01). In the slices affected by metal artifacts, the artifact index decreased by 21.72%~88.40% after the MAR algorithm.
CONCLUSIONS:MAR algorithm can significantly reduce the metal artifacts and improve the clinical value of CT data.
