中华临床医师杂志(电子版)
中華臨床醫師雜誌(電子版)
중화림상의사잡지(전자판)
CHINESE JOURNAL OF CLINICIANS(ELECTRONIC VERSION)
2014年
16期
2987-2992
,共6页
刘成磊%孙志先%刘婕%孙毅%耿磊%张毅
劉成磊%孫誌先%劉婕%孫毅%耿磊%張毅
류성뢰%손지선%류첩%손의%경뢰%장의
肋骨骨折%体层摄影术,螺旋计算机%重建函数
肋骨骨摺%體層攝影術,螺鏇計算機%重建函數
륵골골절%체층섭영술,라선계산궤%중건함수
Rib fractures%Tomography,spiral computed%Kernel
目的:探讨多层螺旋CT(MSCT)不同重建卷积函数对肋骨图像质量及诊断肋骨骨折准确性的影响。方法连续选取30例确诊肋骨骨折患者的CT原始数据,在工作站依次应用B10、B20、B30、B40、B50、B60、B70、B80、B90九个卷积函数重建,分别在9组图像的同一层面测定肋骨及邻近肌肉区CT值及噪声,并计算信噪比(SNR)及对比噪声比(CNR),同时对9组图像进行图像质量评分并记录肋骨骨折的类型及数目,而后进行对比分析。结果(1)随着B值的增加,9组图像的噪声呈线性上升,SNR、CNR呈下降趋势;(2)B70重建图像的图像质量评分是4.83±0.28,与其他B值比较图像质量评分差异有统计学意义(F=29.07,P=0.000);(3)B50~B70重建图像的肋骨骨折检出率为98.07%,与其他B值比较差异有统计学意义(P值分别为0.008、0.031、0.008)。结论 B70卷积函数重建图像质量优于其他函数重建,可以提高肋骨骨折的诊断准确性。
目的:探討多層螺鏇CT(MSCT)不同重建捲積函數對肋骨圖像質量及診斷肋骨骨摺準確性的影響。方法連續選取30例確診肋骨骨摺患者的CT原始數據,在工作站依次應用B10、B20、B30、B40、B50、B60、B70、B80、B90九箇捲積函數重建,分彆在9組圖像的同一層麵測定肋骨及鄰近肌肉區CT值及譟聲,併計算信譟比(SNR)及對比譟聲比(CNR),同時對9組圖像進行圖像質量評分併記錄肋骨骨摺的類型及數目,而後進行對比分析。結果(1)隨著B值的增加,9組圖像的譟聲呈線性上升,SNR、CNR呈下降趨勢;(2)B70重建圖像的圖像質量評分是4.83±0.28,與其他B值比較圖像質量評分差異有統計學意義(F=29.07,P=0.000);(3)B50~B70重建圖像的肋骨骨摺檢齣率為98.07%,與其他B值比較差異有統計學意義(P值分彆為0.008、0.031、0.008)。結論 B70捲積函數重建圖像質量優于其他函數重建,可以提高肋骨骨摺的診斷準確性。
목적:탐토다층라선CT(MSCT)불동중건권적함수대륵골도상질량급진단륵골골절준학성적영향。방법련속선취30례학진륵골골절환자적CT원시수거,재공작참의차응용B10、B20、B30、B40、B50、B60、B70、B80、B90구개권적함수중건,분별재9조도상적동일층면측정륵골급린근기육구CT치급조성,병계산신조비(SNR)급대비조성비(CNR),동시대9조도상진행도상질량평분병기록륵골골절적류형급수목,이후진행대비분석。결과(1)수착B치적증가,9조도상적조성정선성상승,SNR、CNR정하강추세;(2)B70중건도상적도상질량평분시4.83±0.28,여기타B치비교도상질량평분차이유통계학의의(F=29.07,P=0.000);(3)B50~B70중건도상적륵골골절검출솔위98.07%,여기타B치비교차이유통계학의의(P치분별위0.008、0.031、0.008)。결론 B70권적함수중건도상질량우우기타함수중건,가이제고륵골골절적진단준학성。
ObjectiveTo explore the influence of MSCT images with different reconstruction kernels on image quality and diagnostic accuracy of rib fracture.MethodsThe raw data of 30 cases with confirmed rib fractures were reconstructed into nine groups with various kernels (B10, B20, B30, B40, B50, B60, B70, B80, B90). The image noise and CT value were measured on the same level of different reconstructed images, then the SNR and CNR were calculated. At the same time, the image quality score and the type, number of rib fracture were recorded.Results (1) With the increased of kernels, the noise of rib images showed linear rise, the SNR and CNR of rib images had declined. (2) The rib image quality score of B70 reconstructed images was 4.83±0.28, there was significant difference in image quality score in comparison with other kernels (F=29.07,P=0.000). (3) The accurate rate of diagnosis of rib fracture was 98.07% on B50-B70 reconstructed images, there was significant difference in accuracy of diagnosis in rib fractures (P=0.008, 0.031, 0.008).Conclusion The image quality of B70 reconstructed images was better than other kernels and can improve the accuracy of diagnosis in rib fracture.