scholarly journals Discrimination of vertebral fragility fracture with lumbar spine bone mineral density measured by quantitative computed tomography

2019 ◽  
Vol 16 ◽  
pp. 33-39 ◽  
Author(s):  
Yi-Fan Mao ◽  
Yong Zhang ◽  
Kai Li ◽  
Ling Wang ◽  
Yi-Min Ma ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Bone Mineral ◽  
Fragility Fracture ◽  
Quantitative Computed Tomography ◽  
Spine Bone Mineral Density ◽  
Mineral Density ◽  
Vertebral Fragility Fracture

Effect of spinal degenerative changes on volumetric bone mineral density of the central skeleton as measured by quantitative computed tomography

2005 ◽  
Vol 46 (3) ◽  
pp. 269-275 ◽  
Author(s):  
G. Guglielmi ◽  
I. Floriani ◽  
V. Torri ◽  
J. Li ◽  
C. van Kuijk ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Bone Mineral ◽  
Vertebral Fractures ◽  
Quantitative Computed Tomography ◽  
Degenerative Changes ◽  
Volumetric Bone Mineral Density ◽  
Mineral Density ◽  
The Impact

Purpose: To evaluate the impact of degenerative changes due to osteoarthritis (OA) at the spine on volumetric bone mineral density (BMD) as measured by volumetric quantitative computed tomography (vQCT). Material and Methods: Eighty‐four elderly women (mean age 73±6 years), comprising 33 with vertebral fractures assessed by radiographs and 51 without vertebral fractures, were studied. Trabecular, cortical, and integral BMD were examined at the spine and hip using a helical CT scanner and were compared to dual X‐ray absorptiometry (DXA) measurements at the same sites. OA changes visible on the radiographs were categorized into two grades according to severity. Differences in BMD measures obtained in the two groups of patients defined by OA grade using the described radiologic methods were compared using analysis of variance. Standardized difference (effect sizes) was also compared between radiologic methods. Results: Spinal trabecular BMD did not differ significantly between OA grade 0 and OA grade 1. Spinal cortical and integral BMD measures showed statistically significant differences, as did the lumbar spine DXA BMD measurement (13%, P = 0.02). The QCT measurements at the hip were also higher in OA 1 subjects. Femoral trabecular BMD was 13–15% higher in OA grade 1 subjects than in OA grade 0 subjects. The cortical BMD measures in the CT_TOT_FEM and CT_TROCH ROI's were also higher in the OA 1 subjects. The integral QCT BMD measures in the hip showed difference between grades OA 1 and 0. The DXA measurements in the neck and trochanter ROI's showed smaller differences (9 and 11%, respectively). There were no statistically significant differences in bone size. Conclusion: There is no evidence supporting that trabecular BMD measurements by QCT are influenced by OA. Instead, degenerative changes have an effect on both cortical and integral QCT, and on DXA at the lumbar spine and the hip. For subjects with established OA, assessment of BMD by volumetric QCT may be suggested.

scholarly journals Correlation Of Bone Mineral Density Measured In Quantitative Computed Tomography With Hounsfield Unit

2020 ◽  
Author(s):  
R Lalruatfela ◽  
Rahul P Kotian ◽  
Nitika C Panakkal
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Trabecular Bone ◽  
Bone Mineral ◽  
Quantitative Computed Tomography ◽  
Hounsfield Unit ◽  
Mineral Density ◽  
Ct Attenuation ◽  
The Mean

Abstract Background: Bone mineral density scan (BMD) is a simple, non-invasive procedure used to assess the strength of the bones by measuring the composition of minerals mainly calcium in the bones. In this study, BMD was measured using Quantitative Computed Tomography (QCT) and Hounsfield unit (HU) in the lumbar spine and the values were correlated.Methods: 240 participants referred for CT Abdomen and CT Lumbar spine were scanned using 64 slice Brilliance CT. Using BMD software, three different vertebral bodies from L1-L3 were taken and ROI was placed at the central portion of the trabecular bone. Two references ROI one in retro spinal muscle and one in fat tissue was also placed. To measure CT attenuation value an ROI graphic tool was drawn at the trabecular bone. The average of BMD in QCT and HU value was taken from L1-L3. Pearson Correlation Coefficient was used to correlate QCT and HU values.Results: The mean BMD for the 21-40 age group was found to be 156.3 and 228.0 for QCT and HU respectively. Similarly, the mean BMD for 41-60 and 61-80 age groups was found to be 125.5, 173.6 and 109.1, 140.4 for QCT and HU respectively. The results showed a strong positive correlation between QCT and HU BMD (r = 0.94) with a p-value less than 0.001.Discussion: In our present study, 64.53% (n=155) were found to have normal BMD based on the WHO diagnostic category for spine BMD in QCT. Whereas 24.58% were found to have a low bone mass (osteopenia) and 10.83% were found to have osteoporosis. The equivalent mean HU was found to be 211.98 ±31.06, 139.64 ±18.58, 87.22 ±15.92 for normal, osteopenia and osteoporosis respectively.Conclusion: The study shows a strong correlation between QCT BMD with HU. Therefore, the CT attenuation technique can also be used to derive bone mineral density values from routine abdomen and lumbar spine MDCT for osteoporosis screening with no additional cost to the patient

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