MR Imaging with Prosthesis: Evaluation of Deflection, Heat Production and Artifact

Autor:	Shigeharu Nomura, Kuniichi Asoh, Shougo Masumi, Yoshiaki Ueda, Eijirou Nakamura, Tarou Nakamura
Rok vydání:	1994
Předmět:	medicine.medical_specialty Knee prosthesis Deflection (engineering) business.industry medicine.medical_treatment T1 weighted medicine In patient Radiology business Prosthesis Mr imaging Biomedical engineering
Zdroj:	Orthopedics & Traumatology. 43:100-103
ISSN:	1349-4333 0037-1033
DOI:	10.5035/nishiseisai.43.100
Popis:	Patient with metal implants are considered a contra-indication for MR imaging primarily because of the potential hazards associated with their movement, heat production and artifact.To find out whether MR imaging is safe in patient with prosthesis, or can be safe, we evaluated the movement, heat production and artifact. 4 prosthesis (three hip prosthesis, one knee prosthesis) are selected for this study. MR unit was used 0.5T, 1.5T and 2.35T. T1 weighted and T2* weighted MR imaging was performed. To evaluate the movement, we measured deflection forces at the portal of the magnet of each MR unit. And we measured the change of temperature at the prosthesis surface by using an electrical thermomenter. We also studied the artifact which caused by the influence of prosthesis.These results showed patients with prosthesis can be safely and usefuly imaged with MR imaging.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1d39c4582128a38a443cdff21513d48f https://doi.org/10.5035/nishiseisai.43.100 Zobrazit plný text záznamu