两种 QCT 对腰椎骨密度检测的比较 测量软件.

Objective To explore the reproducibility, correlation, consistency, and clinical application value of the lumbar BMD measured with Philips workstation IntelliSpace (IP, without phantom) and Mindways (MW) QCT Pro (with phantom), respectively. Methods Two hundred and twenty patients were performed abdominal scan in clinic. The scan data were sent to the IP and MW bone mineral density measurement software for measurement. The Pearson correlation test was used to analyze the correlation between the measurement result of the two software. The paired sample t test was used to analyze whether the average values of the two method were different. The Bland-Altman chart was used to analyze the consistency of the two. Thirty randomly selected cases were measured twice by different operators using each QCT software to test the reproducibility. Results There was significant correlation between two measurements in 30 randomly selected cases using IP and MW software. Correlation coefficient was 0. 977 (P < 0. 01) showing high reproducibility. There was no significant difference between the two measurements (P > 0. 05). The BMD value measured with IP (92. 93±36. 16 mg/cm³) was significantly lower than that measured with MW (112. 78± 41. 36 mg/cm³). There was a positive correlation between the two measured values (r= 0. 911, P<O. 01). Bland-Altman analysis showed that most of the differences were within ± 1. 96 standard deviations of the mean of the differences, indicating that the two measurements were in good coincidence. Conclusion The consistency and correlation between the IP bone mineral density measurement software and the MW bone mineral density measurement software are good. They can be used for the evaluation and follow-up of bone mineral density of clinical patients. [ABSTRACT FROM AUTHOR]