Palanan Siriwanarangsun1,2, Won C Bae1,3, Sheronda Statum1,3, Christine B Chung1,3. 1. 1 Department of Radiology, University of California, San Diego, 9427 Health Sciences Dr, Mail Code 0997, La Jolla, CA 92093. 2. 2 Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand. 3. 3 Department of Radiology, VA San Diego Healthcare System, San Diego, CA.
Abstract
OBJECTIVE: The purposes of this article are to present a state-of-the-art routine protocol for MRI of the ankle, to provide problem-solving tools based on specific clinical indications, and to introduce principles for the implementation of ultrashort echo time MRI of the ankle, including morphologic and quantitative assessment. CONCLUSION: Ankle injury is common among both athletes and the general population, and MRI is the established noninvasive means of evaluation. The design of an ankle protocol depends on various factors. Higher magnetic field improves signal-to-noise ratio but increases metal artifact. Specialized imaging planes are useful but prolong acquisition times. MR neurography is useful, but metal reduction techniques are needed whenever a metal prosthesis is present. An ultrashort echo time sequence is a valuable tool for both structural and quantitative evaluation.
OBJECTIVE: The purposes of this article are to present a state-of-the-art routine protocol for MRI of the ankle, to provide problem-solving tools based on specific clinical indications, and to introduce principles for the implementation of ultrashort echo time MRI of the ankle, including morphologic and quantitative assessment. CONCLUSION:Ankle injury is common among both athletes and the general population, and MRI is the established noninvasive means of evaluation. The design of an ankle protocol depends on various factors. Higher magnetic field improves signal-to-noise ratio but increases metal artifact. Specialized imaging planes are useful but prolong acquisition times. MR neurography is useful, but metal reduction techniques are needed whenever a metal prosthesis is present. An ultrashort echo time sequence is a valuable tool for both structural and quantitative evaluation.
Entities:
Keywords:
MRI; advanced technique; ankle; metal reduction; ultrashort echo time
Authors: Tuğrul Ergün; Ahmet Peker; Muhsin N Aybay; Kaya Turan; Osman G Muratoğlu; Haluk Çabuk Journal: Arch Orthop Trauma Surg Date: 2022-07-22 Impact factor: 2.928