scholarly journals Dosimetric impact of using a commercial metal artifact reduction tool in carbon ion therapy in patients with hip prostheses

2021 ◽  
Author(s):  
Jingfang Zhao ◽  
Weiwei Wang ◽  
Kambiz Shahnaz ◽  
Xianwei Wu ◽  
Jingfang Mao ◽  
...  
Keyword(s):  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Carbon Ion Therapy ◽  
Hip Prostheses ◽  
Carbon Ion ◽  
Ion Therapy

Application of Iterative Metal Artifact Reduction Algorithm to CT Urography for Patients With Hip Prostheses

2020 ◽  
Vol 214 (1) ◽  
pp. 137-143 ◽  
Author(s):  
Tugce Agirlar Trabzonlu ◽  
Martha Terrazas ◽  
Amirhossein Mozaffary ◽  
Yuri S. Velichko ◽  
Vahid Yaghmai
Keyword(s):  
Artifact Reduction ◽  
Ct Urography ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Reduction Algorithm ◽  
Hip Prostheses

scholarly journals Metal Artifact Reduction From Reformatted Projections for Hip Prostheses in Multislice Helical Computed Tomography

2009 ◽  
Vol 44 (11) ◽  
pp. 691-696 ◽  
Author(s):  
Lifeng Yu ◽  
Hua Li ◽  
Jan Mueller ◽  
James M. Kofler ◽  
Xin Liu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Helical Computed Tomography ◽  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Hip Prostheses

Metal artifact reduction (MAR) based on two-compartment physical modeling: evaluation in patients with hip implants

2016 ◽  
Vol 58 (1) ◽  
pp. 70-76 ◽  
Author(s):  
Johannes Boos ◽  
Lino Morris Sawicki ◽  
Rotem Shlomo Lanzman ◽  
Christoph Thomas ◽  
Joel Aissa ◽  
...  
Keyword(s):  
Image Quality ◽  
Near Field ◽  
Image Interpretation ◽  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Hip Implants ◽  
Subjective Image Quality ◽  
Hip Prostheses ◽  
The Impact

Background Artifacts from metallic implants can hinder image interpretation in computed tomography (CT). Image quality can be improved using metal artifact reduction (MAR) techniques. Purpose To evaluate the impact of a MAR algorithm on image quality of CT examinations in comparison to filtered back projection (FBP) in patients with hip prostheses. Material and Methods Twenty-two patients with 25 hip prostheses who underwent clinical abdominopelvic CT on a 64-row CT were included in this retrospective study. Axial images were reconstructed with FBP and five increasing MAR levels (M30–34). Objective artifact strength (OAS) (SIart-SInorm) was assessed by region of interest (ROI) measurements in position of the strongest artifact (SIart) and in an osseous structure without artifact (SInorm) (in Hounsfield units [HU]). Two independent readers evaluated subjective image quality regarding metallic hardware, delineation of bone, adjacent muscle, and pelvic organs on a 5-point scale (1, non-diagnostic; 5, excellent image quality). Artifacts in the near field, far field, and newly induced artifacts due to the MAR technique were analyzed. Results OAS values were: M34: 243.8 ± 155.4 HU; M33: 294.3 ± 197.8 HU; M32: 340.5 ± 210.1 HU; M31: 393.6 ± 225.2 HU; M30: 446.8 ± 224.2 HU and FBP: 528.9 ± 227.7 HU. OAS values were significantly lower for M32–34 compared to FBP ( P < 0.01). For overall subjective image quality, results were: FBP, 2.0 ± 0.2; M30, 2.3 ± 0.8; M31, 2.6 ± 0.5; M32, 3.0 ± 0.6; M33, 3.5 ± 0.6; and M34, 3.8 ± 0.4 ( P < 0.001 for M30–M34 vs. FBP, respectively). Increasing MAR levels resulted in new artifacts in 17% of reconstructions. Conclusion The investigated MAR algorithm led to a significant reduction of artifacts from metallic hip implants. The highest MAR level provided the least severe artifacts and the best overall image quality.

X-ray CT metal artifact reduction using wavelets: an application for imaging total hip prostheses

2000 ◽  
Vol 19 (12) ◽  
pp. 1238-1247 ◽  
Author(s):  
S. Zhao ◽  
D.D. Robeltson ◽  
G. Wang ◽  
B. Whiting ◽  
K.T. Bae
Keyword(s):  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Hip Prostheses ◽  
X Ray ◽  
Total Hip ◽  
Total Hip Prostheses

Metal Artifact Reduction Software Used With Abdominopelvic Dual-Energy CT of Patients With Metal Hip Prostheses: Assessment of Image Quality and Clinical Feasibility

2014 ◽  
Vol 203 (4) ◽  
pp. 788-795 ◽  
Author(s):  
Seung Chol Han ◽  
Yong Eun Chung ◽  
Young Han Lee ◽  
Kwan Kyu Park ◽  
Myeong Jin Kim ◽  
...  
Keyword(s):  
Image Quality ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Hip Prostheses

Single-energy metal artifact reduction for helical computed tomography of the pelvis in patients with metal hip prostheses

2016 ◽  
Vol 34 (9) ◽  
pp. 625-632 ◽  
Author(s):  
Koichiro Yasaka ◽  
Eriko Maeda ◽  
Shouhei Hanaoka ◽  
Masaki Katsura ◽  
Jiro Sato ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Helical Computed Tomography ◽  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Hip Prostheses

scholarly journals Metal Artifact Reduction in Pelvic Computed Tomography With Hip Prostheses

2015 ◽  
Vol 50 (12) ◽  
pp. 828-834 ◽  
Author(s):  
Kai Higashigaito ◽  
Florian Angst ◽  
Val M. Runge ◽  
Hatem Alkadhi ◽  
Olivio F. Donati
Keyword(s):  
Computed Tomography ◽  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Hip Prostheses
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