CAJ | 학술논문

目的评价CT窗技术对动脉粥样硬化( AS)早期斑块诊断的影响。方法通过高脂饮食建立兔AS模型,并行CT血管造影,选取2只经大体标本及病理证实粥样硬化斑块弥漫分布于全段主动脉的兔,观察其CT血管造影后的横断面图像(共800幅),应用下列9种显示窗观察图像：(200 HU,200 HU)、(250 HU,200 HU)、(300 HU,200 HU)、(350 HU,200 HU)、(400 HU,200 HU)、(450 HU,200 HU)、(500 HU,200 HU)、(550 HU,200 HU)、(600 HU,200 HU),观察800幅血管横断面图像并记录异常的图像数。利用字2检验,比较不同显示窗下早期AS斑块的显示率及相邻两组之间显示概率有无差别。结果窗位一定的情况下(定为200 HU),相对窄的窗宽(200~250 HU)对于早期斑块显示率高。结论CT窗技术的应用对AS早期斑块的显示影响较大。
목적평개CT창기술대동맥죽양경화( AS)조기반괴진단적영향。방법통과고지음식건립토AS모형,병행CT혈관조영,선취2지경대체표본급병리증실죽양경화반괴미만분포우전단주동맥적토,관찰기CT혈관조영후적횡단면도상(공800폭),응용하렬9충현시창관찰도상：(200 HU,200 HU)、(250 HU,200 HU)、(300 HU,200 HU)、(350 HU,200 HU)、(400 HU,200 HU)、(450 HU,200 HU)、(500 HU,200 HU)、(550 HU,200 HU)、(600 HU,200 HU),관찰800폭혈관횡단면도상병기록이상적도상수。이용자2검험,비교불동현시창하조기AS반괴적현시솔급상린량조지간현시개솔유무차별。결과창위일정적정황하(정위200 HU),상대착적창관(200~250 HU)대우조기반괴현시솔고。결론CT창기술적응용대AS조기반괴적현시영향교대。
Objective Evaluation of the effects of CT on early diagnosis of atherosclerosis plaque window tech-nique. Methods By a high-fat diet to establish the rabbit model of atherosclerosis and parallel CT angiography, we only selected 2 confirmed by gross specimens and whose pathological atherosclerotic plaque was distributed in the entire section of the aorta rabbit, observed its cross-sectional CT angiography image (800), and applied the follow-ing 9 display window observation images: (200 HU,200 HU),(250 HU,200 HU),(300 HU,200 HU),(350 HU,200 HU) ,(400 HU,200 HU) ,(450 HU,200 HU) ,(500 HU,200 HU) ,(550 HU,200 HU) ,(600 HU,200 HU) . 800 vessels cross-sectional images were observed and the number of abnormal images were recorded. Using test, display rate between the two groups and the adjacent display probability difference of early atherosclerotic plaques was compared under different conditions. Results Under window level in certain circumstances ( 200 HU) , bandwidth (200~250 HU) was relatively narrow for the high rate of early plaque. Conclusion CT window technology application shows great influence on early plaque of atherosclerosis plaques.