發(fā)布時間：2018-04-04 03:50

  本文選題：薄層CT掃描　切入點：CT值　出處：《中國骨質(zhì)疏松雜志》2017年12期

【摘要】：目的探討采用薄層CT掃描骨診斷骨質(zhì)疏松過程中,CT值的質(zhì)量控制。方法9根豬的股骨分別在2臺CT機上掃描,控制因素:電壓:100 kV及120 kV;電流:150 mAs及328 mAs。數(shù)據(jù)按照骨算法、標(biāo)準(zhǔn)算法及軟組織算法輸出,獲得結(jié)果傳輸至個人圖形工作站。通過Mask編輯,將數(shù)據(jù)分為單骨比較組和多骨比較組。統(tǒng)計學(xué)分析(1)t檢驗;(2)Hu及Vσ變化幅度;(3)單因素方差分析;(4)卡方檢驗;(5)等比驗證。結(jié)果SBCG在2臺CT上所獲得的結(jié)果進行兩兩t檢驗,GE CT 594個P中有523個P0.05(523/594),而SIEMENS CT 594個P中有547個P0.05(547/594);(2)Hu總的變化幅度為0.0664±0.0506,Vσ總的變化幅度為0.0310±0.0300;(3)單因素方差分析結(jié)果中P0.05的發(fā)生個數(shù),按與4個因素相關(guān)性排列,由大到小分別為:電壓機器=算法電流;(4)卡方檢驗:Hu與Vσ,P0.01。Hu的kV因素與CT機器因素,P0.01。Hu的kV因素與算法因素,P0.01。Hu的CT機器因素與算法因素,P0.05。Hu的mAs因素與其他三種,P0.01;(5)標(biāo)準(zhǔn)差與CT值均值近似成等比變化。結(jié)論在基于薄層CT掃描診斷骨質(zhì)疏松過程中,骨CT值的標(biāo)準(zhǔn)差系數(shù)具有十分良好的質(zhì)量控制。
[Abstract]:Objective to study the quality control of CT value in the diagnosis of osteoporosis by thin slice CT scan.Methods the femur of 9 pigs were scanned on two CT machines. The controlling factors were: voltage: 100kV and 120kV; current: 150,150mAs; current: 328mAs.The data are outputted according to bone algorithm, standard algorithm and soft tissue algorithm, and the results are transmitted to personal graphics workstation.The data were divided into single bone comparison group and multi bone comparison group by Mask editing.Statistical analysis of Hu and V 蟽 changes in Hu and V 蟽 were statistically analyzed. (4) chi-square test / chi-square test were used to verify the variance of Hu and V 蟽.緇撴灉SBCG鍦，

本文編號：1708239