[定量计算机断层扫描测定骨密度新方法的临床应用]。

Aktuelle Radiologie Pub Date : 1998-11-01
F Herbig, K J Lehmann, G Weisser, S J Diehl, M Georgi
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引用次数: 0

摘要

目的:评价SEQCT测定骨密度新方法的临床适用性,并与现有方法进行比较。方法:为了验证这两种系统的稳定性,对腰椎躯干和78名患者进行了幻像测量。按既定方法检查44例,按新方法检查34例。在15例患者中可以进行平行测量。结果:两种方法均具有较高的稳定性。对于绝对骨密度,新方法得到了更高的骨密度值。这一结果在15例患者的平行测量中得到证实。由于制备时间较短,新方法证明了更高的适用性。并不是所有患者都能获得降低剂量的扫描参数,因此不能考虑节省时间的效果。在这些情况下,需要手动设置。结论:用新方法替代已建立的用SEQCT测量骨密度的方法是可行的。但是,结果必须通过偏离质量幻象默认值的百分比进行修正。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Clinical use of a new analytical method for the determination of bone density by means of quantitative computer tomography].

Aim: Evaluation of the clinical suitability of a new analytical method for the determination of bone mineral density (BMD) by means of SEQCT as well as a comparison with the established method.

Methods: In order to verify the stability of both systems, phantom measurements were performed on a lumbal spine torso as well as on 78 patients. 44 patients were examined by means of the established method and 34 according to the new method. Parallel measurements were possible in 15 patients.

Results: The phantom measurements proved a high stability of both methods. Regarding the absolute BMD the new method resulted in higher BMD values. This result was confirmed by parallel measurements in 15 patients. The new method demonstrated increased suitability due to less time consuming preparations. Dose reduced scan parameters could not be achieved in all patients, so that the time saving effect could not be considered. In these cases manual settings were required.

Conclusion: A substitution of the established method for BMD measurement by means of SEQCT with the new method seems to be possible. However, the results will have to be corrected by the percentage of deviation from the default value of the quality phantom.

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