PROJECT TITLE :

Dual-Energy X-Ray Absorptiometry for Measurement of Phalangeal Bone Mineral Density on a Slot-Scanning Digital Radiography System

ABSTRACT:

Objective: During this paper, we tend to assess the feasibility of using 2 detectors in an exceedingly slot-scanning digital radiography system to accumulate images for measuring bone mineral density (BMD) of the middle phalanx of the middle finger using twin-energy X-ray absorptiometry (DXA). Strategies: Simulations were used to judge the spectral separation of the low- and high-energy spectra and detective quantum efficiency was used for assessing image quality. Scan parameters were chosen to optimize spectral separation, image quality, and radiation dose. We introduce the measurement of volumetric BMD (vBMD) using basis material decomposition. We have a tendency to assess the accuracy of our strategies by comparing measurements taken using bone pictures against reference information derived from subsequent incineration of the bones. In vivo scans were conducted to evaluate the system precision (repeatability) and agreement with a clinical densitometer. Results: Average errors for bone mineral content (BMC), areal BMD (aBMD), and vBMD were four.eighty five%, five.forty nine%, and 12.77%, respectively. Our system had good agreement with a clinical densitometer based mostly on concordance correlation coefficient values of 0.92 and 0.ninety eight for aBMD and BMC, respectively. Precision studies yielded coefficient of variation (CV) values of 1.35% for aBMD, 1.forty eight% for BMC, and one.eighty% for vBMD. The CV values of all measurements were among two%, indicating that the strategies have clinically acceptable precision. Conclusion: We tend to conclude that our techniques yield bone measurements with high accuracy, clinically acceptable precision, and smart agreement with a clinical densitometer. Significance: We have shown the clinical potential of phalangeal DXA measurements of aBMD and vBMD on a slot- scanning digital radiography system.


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