AIM: to study the accuracy of quantitative computed tomography (QCT) for measuring bone mineral density (BMD).
目的：探讨定量ct测量骨密度的准确性。
Objective to evaluate the clinical value and to explore diagnostic standard of osteoporosis with vertebra bone mineral density (BMD) by measurement using quantitative computed tomography (QCT).
目的探讨定量ct (QCT)椎体骨密度(BMD)测定在诊断骨质疏松症中的临床价值和诊断标准。
Objective To establish and consummate the quantitative analysis reference database along with the use of the software for myocardial perfusion computed tomography.
目的在心肌灌注断层显像定量分析软件的使用过程中，逐步建立和完善参考数据。 方法推导使软件能够进行机器学习的公式，并编程实现该功能。
Objective To establish and consummate the quantitative analysis reference database along with the use of the software for myocardial perfusion computed tomography.
目的在心肌灌注断层显像定量分析软件的使用过程中，逐步建立和完善参考数据。 方法推导使软件能够进行机器学习的公式，并编程实现该功能。
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