Bone quality in severe adolescent idiopathic scoliosis -- quantitative computed tomography of lumbar spine vs high-resolution peripheral quantitative computed tomography of the distal radius: a pilot study

2015 ◽  
Author(s):  
Fiona Wai Ping Yu ◽  
Lin Shi ◽  
Defeng Wang ◽  
Vivian Wing Yin Hung ◽  
Wing Yee Choy ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Lumbar Spine ◽  
Pilot Study ◽  
High Resolution ◽  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Distal Radius ◽  
Bone Quality ◽  
Quantitative Computed Tomography ◽  
Peripheral Quantitative Computed Tomography

Bone Evaluation by High-Resolution Peripheral Quantitative Computed Tomography in Patients With Adrenal Incidentaloma

2020 ◽  
Vol 105 (8) ◽  
pp. e2726-e2737
Author(s):  
Aline Barbosa Moraes ◽  
Marcela Pessoa de Paula ◽  
Francisco de Paula Paranhos-Neto ◽  
Emanuela Mello Ribeiro Cavalari ◽  
Felipe Fernandes Cordeiro de Morais ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
High Resolution ◽  
Distal Radius ◽  
Bone Mineral ◽  
Quantitative Computed Tomography ◽  
Adrenal Incidentaloma ◽  
Peripheral Quantitative Computed Tomography ◽  
Mineral Density ◽  
X Ray

Abstract Context Data regarding high-resolution peripheral quantitative computed tomography (HR-pQCT) in patients with adrenal incidentaloma (AI) are unknown. Purpose To evaluate the areal bone mineral density (aBMD), microstructure, and fractures in patients with nonfunctioning AI (NFAI) and autonomous cortisol secretion (ACS). Methods We evaluated 45 patients with NFAI (1 mg dexamethasone suppression test [DST] ≤1.8 µg/dL) and 30 patients with ACS (1 mg DST 1.9-5.0 µg/dL). aBMD was measured using dual-energy X-ray absorptiometry; vertebral fracture by spine X-ray; and bone geometry, volumetric bone mineral density (vBMD), and microstructure by HR-pQCT. Results Patients with ACS showed lower aBMD values at the spine, femoral neck, and radius 33% than those with NFAI. Osteoporosis was frequent in both groups: NFAI (64.9%) and ACS (75%). Parameters at the distal radius by HR-pQCT were decreased in patients with ACS compared to those with NFAI: trabecular vBMD (Tb.vBMD, P = 0.03), inner zone of the trabecular region (Inn.Tb.vBMD, P = 0.01), the bone volume/tissue volume ratio (BV/TV, P = 0.03) and trabecular thickness (P = 0.04). As consequence, a higher ratio of the outer zone of the trabecular region/inner zone vBMD (Meta/Inn.vBMD, P = 0.003) was observed. A correlation between the cortisol levels after 1 mg DST and Meta/Inn.vBMD ratio was found (r = 0.29; P = 0.01). The fracture frequency was 73.7% in patients with ACS vs 55.6% in patients with NFAI (P = 0.24). Conclusion Our findings point to an association between trabecular bone microarchitectural derangement at the distal radius and ACS. Our data suggest that AI have a negative impact on bone when assessed by HR-pQCT, probably associated to subclinical hypercortisolism.

scholarly journals Assessment of the healing process in distal radius fractures by high resolution peripheral quantitative computed tomography

Bone ◽  
2014 ◽  
Vol 64 ◽  
pp. 65-74 ◽  
Author(s):  
Joost J.A. de Jong ◽  
Paul C. Willems ◽  
Jacobus J. Arts ◽  
Sandrine G.P. Bours ◽  
Peter R.G. Brink ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Distal Radius ◽  
Healing Process ◽  
Quantitative Computed Tomography ◽  
Peripheral Quantitative Computed Tomography ◽  
Distal Radius Fractures ◽  
Radius Fractures

Quantitative and Semiquantitative Bone Erosion Assessment on High-resolution Peripheral Quantitative Computed Tomography in Rheumatoid Arthritis

2013 ◽  
Vol 40 (4) ◽  
pp. 408-416 ◽  
Author(s):  
Waraporn Srikhum ◽  
Warapat Virayavanich ◽  
Andrew J. Burghardt ◽  
Andrew Yu ◽  
Thomas M. Link ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Computed Tomography ◽  
High Resolution ◽  
Distal Radius ◽  
Disease Duration ◽  
Bone Erosion ◽  
Quantitative Computed Tomography ◽  
Correlation Coefficients ◽  
Peripheral Quantitative Computed Tomography ◽  
Bone Erosions

Objective.To develop novel quantitative and semiquantitative bone erosion measures at metacarpophalangeal (MCP) and wrist joints in patients with rheumatoid arthritis (RA) using high-resolution peripheral quantitative computed tomography (HR-pQCT), and to correlate these measurements with disease duration and bone marrow edema (BME) patterns derived from magnetic resonance imaging (MRI).Methods.Sixteen patients with RA and 7 healthy subjects underwent hand and wrist HR-pQCT and 3-Tesla MRI. Bone erosions of the MCP2, MCP3, and distal radius were evaluated by measuring maximal erosion dimension on axial slices, which is a simple and fast measurement, and then were graded (grades 0–3) based on the maximal dimension. Correlation coefficients were calculated between (1) sum maximal dimensions, highest grades, and sum grades of bone erosions; (2) erosion measures and the clinical evaluation; (3) erosion measures and BME volume in distal radius.Results.The inter- and intrareader agreements of maximal erosion dimensions were excellent (intraclass correlation coefficients 0.89, 0.99, and root mean square error 9.4%, 4.7%, respectively). Highest grades and sum grades were significantly correlated to sum maximal dimensions of all erosions. Number of erosions, sum maximal erosion dimensions, highest grades, and sum grades correlated significantly with disease duration. Number of erosions, sum maximal dimensions, and erosion grading of the distal radius correlated significantly with BME volume.Conclusion.HR-pQCT provides a sensitive method with high reader agreement in assessment of structural bone damage in RA. The good correlation of erosion measures with disease duration as well as BME volume suggests that they could become feasible measures of erosions in RA.

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