Ultrashort Echo Time MRI Detects Significantly Lower Collagen but Higher Pore Water in the Tibial Cortex of Female Patients with Osteopenia and Osteoporosis

Overview

Journal J Bone Miner Res

Publisher Oxford University Press

Date 2024 Apr 9

PMID 38591788

Authors

Saeed Jerban

Yajun Ma

Zhao Wei

Meghan Shen

Zubaid Ibrahim

Hyungseok Jang

Pengzhe Lu

Douglas G Chang

Gina Woods

Christine B Chung

Eric Y Chang

Jiang Du

Affiliations

Soon will be listed here.

Abstract

Ultrashort echo time (UTE) MRI can quantify the major proton pool densities in cortical bone, including total (TWPD), bound (BWPD), and pore water (PWPD) proton densities, as well as the macromolecular proton density (MMPD), associated with the collagen content, which is calculated using macromolecular fraction (MMF) from UTE magnetization transfer (UTE-MT) modeling. This study aimed to investigate the differences in water and collagen contents in tibial cortical bone, between female osteopenia (OPe) patients, osteoporosis (OPo) patients, and young participants (Young). Being postmenopausal and above 55 yr old were the inclusion criteria for OPe and OPo groups. The tibial shaft of 14 OPe (72.5 ± 6.8 yr old), 31 OPo (72.0 ± 6.4 yr old), and 31 young subjects (28.0 ± 6.1 yr old) were scanned using a knee coil on a clinical 3T scanner. Basic UTE, inversion recovery UTE, and UTE-MT sequences were performed. Investigated biomarkers were compared between groups using Kruskal-Wallis test. Spearman's correlation coefficients were calculated between the TH DXA T-score and UTE-MRI results. MMF, BWPD, and MMPD were significantly lower in OPo patients than in the young group, whereas T1, TWPD, and PWPD were significantly higher in OPo patients. The largest OPo/Young average percentage differences were found in MMF (41.9%), PWPD (103.5%), and MMPD (64.0%). PWPD was significantly higher (50.7%), while BWPD was significantly lower (16.4%) in OPe than the Young group on average. MMF was found to be significantly lower (27%) in OPo patients compared with OPe group. T1, MMF, TWPD, PWPD, and MMPD values significantly correlated with the TH DXA T-scores (provided by the patients and only available for OPe and OPo patients). DXA T-score showed the highest correlations with PWPD (R = 0.55) and MMF (R = 0.56) values. TWPD, PWPD, and MMF estimated using the UTE-MRI sequences were recommended to evaluate individuals with OPe and OPo.

Citing Articles

UTE MRI technical developments and applications in osteoporosis: a review.

Shin S, Chae H, Suprana A, Jerban S, Chang E, Shi L Front Endocrinol (Lausanne). 2025; 16:1510010.

PMID: 39980853 PMC: 11839439. DOI: 10.3389/fendo.2025.1510010.

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