Optimized MRI of Patients With Hip Arthroplasty

Twenty participants with symptomatic primary total hip arthroplasty will be imaged with both methods. The results of the two methods will be compared in reference to the size of the artifact-degraded regions, visibility of the normal structures and the rate of abnormality detection.Primary Objective: To assess the size of the artifact-degraded regions, defined as regions of the image where underlying anatomic structure are obscured, between modified and standard MRI protocols. Secondary Objectives: (1) To assess the visibility of normal structures between modified and standard MRI protocols. (2) To assess the abnormality detection rate using modified and standard MRI protocols.

Inclusion criteria

• Patients aged ≥ 18 with unilateral symptomatic (e.g. pain) total hip arthroplasty
• Referred for MRI examination at the discretion of the treating physician
• Provision of signed and dated informed consent form
• No metal hardware in the body including contralateral hip arthroplasty
• No contraindication to MRI: defined as claustrophobia or presence of other MRI-incompatible devices

Exclusion criteria

• History of revision hip arthroplasty
• Pregnancy (self-reported, or self-suspected)
• Hip arthroplasty surgery within one year of enrollment
• Clinical indication to administer intravenous contrast material during MRI