Classification Scheme of Heating Risk during MRI Scans on Patients with Orthopaedic Prostheses.

ABSTRACT: Due to the large variety of possible clinical scenarios, a reliable heating-risk assessment is not straightforward when patients with arthroplasty undergo MRI scans. This paper proposes a simple procedure to estimate the thermal effects induced in patients with hip, knee, or shoulder arthroplasty during MRI exams. The most representative clinical scenarios were identified by a preliminary frequency analysis, based on clinical service databases, collecting MRI exams of 11,658 implant carrier patients. The thermal effects produced by radiofrequency and switching gradient fields were investigated through 588 numerical simulations performed on an ASTM-like phantom, considering four prostheses, two static field values, seven MR sequences, and seven regions of imaging. The risk assessment was in

SUBMITTER: Clementi V 

PROVIDER: S-EPMC9406867 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature