Assessment of accuracy and repeatability of quantitative parameter mapping in MRI.

Autor: Hirano Y; Department of Radiological Technology, Hokkaido University Hospital, N15, W7, Kita-Ku, Sapporo, 060-8638, Japan., Ishizaka K; Department of Radiological Technology, Hokkaido University Hospital, N15, W7, Kita-Ku, Sapporo, 060-8638, Japan., Sugimori H; Faculty of Health Sciences, Hokkaido University, Sapporo, 060-0812, Japan.; Clinical AI Human Resources Development Program, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, 060-8648, Japan., Taniguchi Y; Medical Systems Research & Development Center, FUJIFILM Corporation, Tokyo, Japan., Amemiya T; Medical Systems Research & Development Center, FUJIFILM Corporation, Tokyo, Japan., Bito Y; FUJIFILM Healthcare Corporation, Tokyo, Japan.; Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, N15, W7, Kita-Ku, Sapporo, 060-8638, Japan., Kudo K; Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, N15, W7, Kita-Ku, Sapporo, 060-8638, Japan. kkudo@med.hokudai.ac.jp.; Global Center for Biomedical Science and Engineering, Faculty of Medicine, Hokkaido University, N15, W7, Kita-Ku, Sapporo, 060-8638, Japan. kkudo@med.hokudai.ac.jp.
Jazyk: angličtina
Zdroj: Radiological physics and technology [Radiol Phys Technol] 2024 Dec; Vol. 17 (4), pp. 918-928. Date of Electronic Publication: 2024 Aug 28.
DOI: 10.1007/s12194-024-00836-4
Abstrakt: We aimed to evaluate the accuracy and repeatability of the T1, T2*, and proton density (PD) values obtained by quantitative parameter mapping (QPM) using the ISMRM/NIST MRI system phantom and compared them with computer simulations. We compared the relaxation times and PD obtained through QPM with the reference values of the ISMRM/NIST MRI system phantom and conventional methods. Furthermore, we evaluated the presence or absence of influences other than noise in T1 and T2* values obtained by QPM by comparing the obtained coefficient of variation (CV) with simulation results. The T1, T2*, and PD values by QPM showed a strong correlation with the measured values and the referenced values. The simulated CVs of QPM calculated for each sphere showed similar trends to those of the actual scans.
Competing Interests: Declarations. Conflict of interest: Dr. Kudo has research funding from FUJIFILM Healthcare Corporation. Yo Taniguchi, Tomoki Amemiya, and Yoshitaka Bito are currently employed by FUJIFILM Healthcare Corporation. Ethical approval: This study did not involve any experiments using human participants or animals. Informed consent: This study did not involve any human participants; therefore, no informed consent was required.
(© 2024. The Author(s).)
Databáze: MEDLINE
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