The accuracy of bone mineral density measurement using dual-energy spectral CT and quantitative CT: a comparative phantom study

The accuracy of bone mineral density measurement using dual-energy spectral CT and quantitative CT: a comparative phantom study

To compare bone mineral density (BMD) measurement accuracy by dual-energy spectral computed tomography (CT) and quantitative CT (QCT) using an anthropomorphic European spine phantom (ESP). An ESP containing three hydroxyapatite inserts with densities of 50, 100, and 200 mg/cm3 was scanned 10 times e...

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Veröffentlicht in:Clinical radiology 2020-04, Vol.75 (4), p.320.e9-320.e15
Hauptverfasser: Li, X., Li, J., Jiao, X., Jia, X., Zhang, X., Fan, G., Yang, J., Guo, J.
Format: Artikel
Sprache:eng
Schlagworte:
Bone Density
Humans
Phantoms, Imaging
Radiography, Dual-Energy Scanned Projection - methods
Spine - diagnostic imaging
Tomography, X-Ray Computed - methods
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Zusammenfassung:To compare bone mineral density (BMD) measurement accuracy by dual-energy spectral computed tomography (CT) and quantitative CT (QCT) using an anthropomorphic European spine phantom (ESP). An ESP containing three hydroxyapatite inserts with densities of 50, 100, and 200 mg/cm3 was scanned 10 times each using spectral CT and QCT protocols. Their BMD values were measured using hydroxyapatite-based spectral CT material decomposition images and QCT images and compared with the true values in ESP. Both protocols had good repeatability in BMD measurement with low coefficient-of-variance (spectral CT:
ISSN:0009-9260
1365-229X
DOI:10.1016/j.crad.2019.11.008