An Update in Qualitative Imaging of Bone Using Ultrashort Echo Time Magnetic Resonance

Frontiers in Endocrinology

Saeed Jerban¹  Yajun Ma¹  Hyungseok Jang¹  Jiang Du¹  Douglas G. Chang²  Eric Y. Chang³ 

[1] Department of Radiology, University of California, San Diego, San Diego, CA, United States;Departments of Orthopaedic Surgery, University of California, San Diego, San Diego, CA, United States;Research Service, Veterans Affairs San Diego Healthcare System, San Diego, CA, United States;

关键词: cortical bone;    trabecular bone;    MRI;    UTE–ultra-short TE;    single inversion recovery UTE;    zero echo time MRI;   

DOI  :  10.3389/fendo.2020.555756

来源: DOAJ

【 摘 要 】

Bone is comprised of mineral, collagenous organic matrix, and water. X-ray-based techniques are the standard approach for bone evaluation in clinics, but they are unable to detect the organic matrix and water components in bone. Magnetic resonance imaging (MRI) is being used increasingly for bone evaluation. While MRI can non-invasively assess the proton pools in soft tissues, cortical bone typically appears as a signal void with clinical MR techniques because of its short T2*. New MRI techniques have been recently developed to image bone while avoiding the ionizing radiation present in x-ray-based methods. Qualitative bone imaging can be achieved using ultrashort echo time (UTE), single inversion recovery UTE (IR-UTE), dual-inversion recovery UTE (Dual-IR-UTE), double-inversion recovery UTE (Double-IR-UTE), and zero echo time (ZTE) sequences. The contrast mechanisms as well as the advantages and disadvantages of each technique are discussed.

【 授权许可】

Unknown