Unicompartmental knee arthroplasty MRI: impact of slice-encoding for metal artefact correction MRI on image quality, findings and therapy decision

Objectives To evaluate the impact of slice-encoding for metal artefact correction (SEMAC) on image quality, findings, and therapy decision in patients with unicompartmental knee arthroplasty (UKA). Methods Forty-five painful UKAs were examined at 1.5T-MRI (STIR, proton-density(PD)-weighted sequence,...

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Bibliographic Details
Published in:European radiology 2015-07, Vol.25 (7), p.2184-2193
Main Authors: Agten, Christoph A., Del Grande, Filippo, Fucentese, Sandro F., Blatter, Samuel, Pfirrmann, Christian W. A., Sutter, Reto
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Arthralgia - pathology
Arthritis
Arthroplasty, Replacement, Knee
Bandwidths
Bone marrow
Decision making
Decision Support Techniques
Diagnostic Radiology
Edema
Female
Hospitals
Humans
Image Enhancement - methods
Imaging
Internal Medicine
Interventional Radiology
Joint replacement surgery
Knee
Magnetic resonance imaging
Magnetic Resonance Imaging - methods
Male
Medicine
Medicine & Public Health
Metals
Middle Aged
Musculoskeletal
Neuroradiology
Orthopedics
Osteoarthritis
Pain, Postoperative - pathology
Physicians
Prospective Studies
Protons
Radiology
Surgeons
Ultrasound
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Summary:Objectives To evaluate the impact of slice-encoding for metal artefact correction (SEMAC) on image quality, findings, and therapy decision in patients with unicompartmental knee arthroplasty (UKA). Methods Forty-five painful UKAs were examined at 1.5T-MRI (STIR, proton-density(PD)-weighted sequence, each with SEMAC and high-bandwidth). Artefact size, image quality, anatomic depiction, and clinically relevant findings were compared between SEMAC and high-bandwidth (2 readers). In 30 patients, therapy decision was retrospectively assessed by two orthopaedic surgeons without MRI, with high-bandwidth-MRI, and with SEMAC-MRI. Results SEMAC reduced mean artefact size for STIR (11.8 cm 2 vs. 37.7 cm 2 ) and PD (16.8 cm 2 vs. 18.9 cm 2 ), p  
ISSN:0938-7994
1432-1084
DOI:10.1007/s00330-015-3596-4