scholarly journals Quantifying Bone Marrow Fat Fraction and Iron by MRI for Distinguishing Aplastic Anemia from Myelodysplastic Syndromes

2021 ◽  
Vol 54 (6) ◽  
Author(s):  
Zhaolong Zeng ◽  
Xiangzheng Ma ◽  
Yifan Guo ◽  
Baodong Ye ◽  
Maosheng Xu ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Aplastic Anemia ◽  
Myelodysplastic Syndromes ◽  
Marrow Fat ◽  
Bone Marrow Fat ◽  
Fat Fraction

scholarly journals Practical Approaches to Bone Marrow Fat Fraction Quantification Across Magnetic Resonance Imaging Platforms

2020 ◽  
Vol 52 (1) ◽  
pp. 298-306 ◽  
Author(s):  
Alan Bainbridge ◽  
Timothy J.P. Bray ◽  
Raj Sengupta ◽  
Margaret A. Hall‐Craggs
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Marrow Fat ◽  
Bone Marrow Fat ◽  
Fat Fraction

The need forT2correction on MRS-based vertebral bone marrow fat quantification: implications for bone marrow fat fraction age dependence

2015 ◽  
Vol 28 (4) ◽  
pp. 432-439 ◽  
Author(s):  
Michael Dieckmeyer ◽  
Stefan Ruschke ◽  
Christian Cordes ◽  
Samuel P. Yap ◽  
Hendrik Kooijman ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Age Dependence ◽  
Marrow Fat ◽  
Fat Quantification ◽  
Vertebral Bone ◽  
Bone Marrow Fat ◽  
Fat Fraction ◽  
Vertebral Bone Marrow

scholarly journals Bone marrow fat fraction assessment in regard to physical activity: KORA FF4–3-T MR imaging in a population-based cohort

2020 ◽  
Vol 30 (6) ◽  
pp. 3417-3428 ◽  
Author(s):  
Robert C. Bertheau ◽  
Roberto Lorbeer ◽  
Johanna Nattenmüller ◽  
Elke Wintermeyer ◽  
Jürgen Machann ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Marrow ◽  
Mr Imaging ◽  
Population Based ◽  
Marrow Fat ◽  
Bone Marrow Fat ◽  
Fat Fraction

scholarly journals Vertebral bone marrow fat fraction changes in postmenopausal women with breast cancer receiving combined aromatase inhibitor and bisphosphonate therapy

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Michael Dieckmeyer ◽  
Stefan Ruschke ◽  
Alexander Rohrmeier ◽  
Jan Syväri ◽  
Ingo Einspieler ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Bone Marrow ◽  
Lumbar Spine ◽  
Bone Loss ◽  
Marrow Fat ◽  
Vertebral Bone ◽  
Bone Marrow Fat ◽  
Significant Difference ◽  
Fat Fraction ◽  
Vertebral Bone Marrow

Abstract Background Quantification of vertebral bone marrow (VBM) water–fat composition has been proposed as advanced imaging biomarker for osteoporosis. Estrogen deficiency is the primary reason for trabecular bone loss in postmenopausal women. By reducing estrogen levels aromatase inhibitors (AI) as part of breast cancer therapy promote bone loss. Bisphosphonates (BP) are recommended to counteract this adverse drug effect. The purpose of our study was to quantify VBM proton density fat fraction (PDFF) changes at the lumbar spine using chemical shift encoding-based water-fat MRI (CSE-MRI) and bone mineral density (BMD) changes using dual energy X-ray absorptiometry (DXA) related to AI and BP treatment over a 12-month period. Methods Twenty seven postmenopausal breast cancer patients receiving AI therapy were recruited for this study. 22 subjects completed the 12-month study. 14 subjects received AI and BP (AI+BP), 8 subjects received AI without BP (AI-BP). All subjects underwent 3 T MRI. An eight-echo 3D spoiled gradient-echo sequence was used for CSE-based water-fat separation at the lumbar spine to generate PDFF maps. After manual segmentation of the vertebral bodies L1-L5 PDFF values were extracted for each vertebra and averaged for each subject. All subjects underwent DXA of the lumbar spine measuring the average BMD of L1-L4. Results Baseline age, PDFF and BMD showed no significant difference between the two groups (p > 0.05). There was a relative longitudinal increase in mean PDFF (∆relPDFF) in both groups (AI+BP: 5.93%; AI-BP: 3.11%) which was only significant (p = 0.006) in the AI+BP group. ∆relPDFF showed no significant difference between the two groups (p > 0.05). There was no significant longitudinal change in BMD (p > 0.05). Conclusions Over a 12-month period, VBM PDFF assessed with CSE-MRI significantly increased in subjects receiving AI and BP. The present results contradict previous results regarding the effect of only BP therapy on bone marrow fat content quantified by magnetic resonance spectroscopy and bone biopsies. Future longer-term follow-up studies are needed to further characterize the effects of combined AI and BP therapy.

scholarly journals Intervertebral disc degeneration associated with vertebral marrow fat, assessed using quantitative magnetic resonance imaging

2020 ◽  
Vol 49 (11) ◽  
pp. 1753-1763
Author(s):  
Yayun Ji ◽  
Weifeng Hong ◽  
Mouyuan Liu ◽  
Yuying Liang ◽  
YongYan Deng ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Intervertebral Disc Degeneration ◽  
Fat Deposition ◽  
Marrow Fat ◽  
Vertebral Bone ◽  
Bone Marrow Fat ◽  
Fat Fraction ◽  
Vertebral Bone Marrow

Abstract Objective To investigate the potential clinical application of quantitative MRI in assessing the correlation between lumbar vertebrae bone marrow fat deposition and intervertebral disc degeneration. Materials and methods A total of 104 chronic lower-back pain volunteers underwent 3.0-T MRI with T2-weighted imaging, T2 mapping, and iterative decomposition of water and fat with echo asymmetry and least squares estimation (IDEAL-IQ) between August 2018 and June 2019. Each disc was assessed with T2 value by T2 mapping, and the L1-S1 vertebral bone marrow fat fraction was assessed by IDEAL-IQ. The differences and relationship between T2 value and the adjacent vertebral bone marrow fat fraction values within the five Pfirrmann groups, five age groups, and five lumbar levels were statistically analyzed. Results The vertebral bone marrow fat fraction had a significant negative correlation with T2 values of nucleus pulposus’ T2 values (p < 0.001). However, the significant negative correlation was only found between T2 values of nucleus pulposus and adjacent vertebral bone marrow fat in Pfirrmann II–III, L1/2-L5/S1 level, and 40–49 years’ age groups. Pfirrmann grades of the intervertebral disc were positively correlated with adjacent vertebrae bone marrow fat fraction (p < 0.05). Conclusion Lumbar bone marrow fat deposition significantly increases during the early stages of intervertebral disc degeneration. Quantitative measurements of bone marrow fat deposition and water content of intervertebral discs have a predictive value and are an important supplement to the qualitative traditional classification strategies for the early stages of intervertebral disc degeneration.

Bone marrow fat quantification of osteoporotic vertebral compression fractures: comparison of multi-voxel proton MR spectroscopy and chemical-shift gradient-echo MR imaging

2011 ◽  
Vol 52 (9) ◽  
pp. 1032-1036 ◽  
Author(s):  
Anne Régis-Arnaud ◽  
Boris Guiu1 ◽  
Paul-Michael Walker ◽  
Denis Krausé ◽  
Frédéric Ricolfi ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Mr Imaging ◽  
Phase Method ◽  
Vertebral Compression Fractures ◽  
Gradient Echo ◽  
Marrow Fat ◽  
Fat Quantification ◽  
Compression Fractures ◽  
Bone Marrow Fat ◽  
Fat Fraction

Background Only a few studies have used in/opposed phase method for a quantitative evaluation of fat fraction in the spine. Purpose To compare multivoxel proton MR spectroscopy and chemical-shift gradient-echo MR imaging for bone marrow fat quantification in vertebral compression fractures (VCF). Material and Methods Vertebral marrow fat quantification in fifteen patients was measured at 3.0-T. Multi-voxel proton spectroscopy (MRS) and in/opposed-phase MR imaging using a fat map build with a triple-echo gradient-echo sequence was used. All the patients had benign vertebral collapse. Bone marrow fat content was evaluated by both techniques in compressed (acute or chronic) and in non-compressed vertebrae. Results The percentage of fat fraction measured by the triple-echo sequence was well correlated with those calculated by MRS ( r2 = 0.85; P < 10−4). There was a significant decrease of fat fraction in acute VCF versus both chronic VCF ( P < 10−9) and non-fractured vertebrae ( P < 10−7). There was no significant difference in fat fraction evaluated by both techniques between non-fractured vertebrae and chronic VCF. Conclusion We have validated the in/opposed phase method compared with MRS for vertebral bone marrow fat quantification. The fat mapping using a triple-echo gradient-echo sequence allows distinguishing acute and chronic benign VCF.

scholarly journals Association of MRS-Based Vertebral Bone Marrow Fat Fraction with Bone Strength in a Human In Vitro Model

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Dimitrios C. Karampinos ◽  
Stefan Ruschke ◽  
Olga Gordijenko ◽  
Eduardo Grande Garcia ◽  
Hendrik Kooijman ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Biomechanical Testing ◽  
Marrow Fat ◽  
Bone Marrow Fat ◽  
Single Voxel ◽  
Microstructure Parameters ◽  
Human Cadavers ◽  
Fat Fraction ◽  
Vitro Model

Bone marrow adiposity has recently gained attention due to its association with bone loss pathophysiology. In this study, ten vertebrae were harvested from fresh human cadavers. Trabecular BMD and microstructure parameters were extracted from MDCT. Bone marrow fat fractions were determined using single-voxel MRS. Failure load (FL) values were assessed by destructive biomechanical testing. Significant correlations (P<0.05) were observed between MRS-based fat fraction and MDCT-based parameters (up tor=-0.72) and MRS-based fat fraction and FL (r=-0.77). These findings underline the importance of the bone marrow in the pathophysiology and imaging diagnostics of osteoporosis.

Sign in / Sign up

Export Citation Format

Share Document