Combined use of virtual monochromatic images and projection-based metal artifact reduction methods in evaluation of total knee arthroplasty

Objectives To evaluate the effect of the combined use of virtual monochromatic imaging (VMI) and projection-based metal artifact reduction (PB-MAR) methods on further artifact reduction and image quality in total knee arthroplasty (TKA) patients. Methods Fifty-seven knee joints from 36 patients who...

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Bibliographic Details
Published in:European radiology 2020-10, Vol.30 (10), p.5298-5307
Main Authors: Chae, Hee-Dong, Hong, Sung Hwan, Shin, Mack, Choi, Ja-Young, Yoo, Hye Jin
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Algorithms
Arthroplasty (knee)
Arthroplasty, Replacement, Knee
Attenuation
Bioaccumulation
Biomedical materials
Computed tomography
Diagnostic Radiology
Female
Humans
Image quality
Imaging
Internal Medicine
Interventional Radiology
Joint replacement surgery
Joint surgery
Joints (anatomy)
Knee
Male
Medical imaging
Medicine
Medicine & Public Health
Metals
Middle Aged
Musculoskeletal
Neuroradiology
Projection
Qualitative analysis
Quantitative analysis
Radiographic Image Interpretation, Computer-Assisted - methods
Radiology
Reduction (metal working)
Soft tissues
Surgical implants
Tissues
Tomography, X-Ray Computed - methods
Ultrasound
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Summary:Objectives To evaluate the effect of the combined use of virtual monochromatic imaging (VMI) and projection-based metal artifact reduction (PB-MAR) methods on further artifact reduction and image quality in total knee arthroplasty (TKA) patients. Methods Fifty-seven knee joints from 36 patients who had a previous history of TKA for bilateral or unilateral knee joints were included in this study. Four sets of images were compared between non-MAR, PB-MAR, VMI, and VMI + PB-MAR. For quantitative analysis, the area, mean attenuation, artifact index (AI), and contrast-to-noise ratio (CNR) were calculated for each protocol. Regarding qualitative analysis, overall artifact and depiction of soft tissue and bony structure were compared using relative visual grading analysis. Results In the femoral region, the VMI + PB-MAR protocol showed the best MAR performance in quantitative measures including area, mean attenuation, and AI ( p  
ISSN:0938-7994
1432-1084
DOI:10.1007/s00330-020-06932-4