医学影像学杂志
醫學影像學雜誌
의학영상학잡지
JOURNAL OF MEDICAL IMAGING
2014年
8期
1315-1317,1320
,共4页
体层摄影术 ,X线计算机%后处理图像%异物%气管%儿童
體層攝影術 ,X線計算機%後處理圖像%異物%氣管%兒童
체층섭영술 ,X선계산궤%후처리도상%이물%기관%인동
Low-dose CT%Post-processing technique%Foreign body%Trachea%Children
目的:探讨C T低剂量扫描及后处理图像质量对气管支气管异物的诊断价值。方法对96例气道异物患儿行MSCT扫描,CT 扫描参数为100kV ,40~80mA ,层厚5mm ,间距5mm ,螺距0.396,扫描后进行层厚0.625mm ,间隔0.625mm 重建,对获得的数据进行图像后处理,后处理技术包括多平面重建(MPR)、最小密度投影(MinIP)、CT 仿真支气管内窥镜(CTVB)。并与支气管内窥镜结果进行比较。结果96例气管支气管异物均获得满意的后处理图像,螺旋CT及后处理技术的诊断准确性为97.9%,异物定位与支气管镜检相符97.9%。其中MPR(包括CPR)及MinIP在显示异物本身和局限性气管、支气管阻塞最好。结论小儿气管支气管异物可用螺旋CT 低剂量扫描,但不能用单一的后处理技术,应该将轴位和多种后处理技术结合起来,综合分析。本病的直接征象是显示异物本身,而局限性支气管阻塞需结合其他征象才能确诊。
目的:探討C T低劑量掃描及後處理圖像質量對氣管支氣管異物的診斷價值。方法對96例氣道異物患兒行MSCT掃描,CT 掃描參數為100kV ,40~80mA ,層厚5mm ,間距5mm ,螺距0.396,掃描後進行層厚0.625mm ,間隔0.625mm 重建,對穫得的數據進行圖像後處理,後處理技術包括多平麵重建(MPR)、最小密度投影(MinIP)、CT 倣真支氣管內窺鏡(CTVB)。併與支氣管內窺鏡結果進行比較。結果96例氣管支氣管異物均穫得滿意的後處理圖像,螺鏇CT及後處理技術的診斷準確性為97.9%,異物定位與支氣管鏡檢相符97.9%。其中MPR(包括CPR)及MinIP在顯示異物本身和跼限性氣管、支氣管阻塞最好。結論小兒氣管支氣管異物可用螺鏇CT 低劑量掃描,但不能用單一的後處理技術,應該將軸位和多種後處理技術結閤起來,綜閤分析。本病的直接徵象是顯示異物本身,而跼限性支氣管阻塞需結閤其他徵象纔能確診。
목적:탐토C T저제량소묘급후처리도상질량대기관지기관이물적진단개치。방법대96례기도이물환인행MSCT소묘,CT 소묘삼수위100kV ,40~80mA ,층후5mm ,간거5mm ,라거0.396,소묘후진행층후0.625mm ,간격0.625mm 중건,대획득적수거진행도상후처리,후처리기술포괄다평면중건(MPR)、최소밀도투영(MinIP)、CT 방진지기관내규경(CTVB)。병여지기관내규경결과진행비교。결과96례기관지기관이물균획득만의적후처리도상,라선CT급후처리기술적진단준학성위97.9%,이물정위여지기관경검상부97.9%。기중MPR(포괄CPR)급MinIP재현시이물본신화국한성기관、지기관조새최호。결론소인기관지기관이물가용라선CT 저제량소묘,단불능용단일적후처리기술,응해장축위화다충후처리기술결합기래,종합분석。본병적직접정상시현시이물본신,이국한성지기관조새수결합기타정상재능학진。
Objective To evaluate the values of low-dose CT scan and post-processing techniques in diagnosis of tracheal foreign body of children .Methods Ninty-six children with tracheal foreign bodies were scanned by 256-slice spiral CT scanned at 100 kV and 40~80 mA ,slice thickness :5 mm ,increment 5 mm ,pitch 0 .396 ,reconstructed at slice thickness 0 .625 mm ,increment 0 .625 mm .All the data were post-procesed by workstation ,post-processing techniques inciuding MPR ,MinIP ,CTVB ,then compared with bronchoscopy .Results All the post-processing imaging of 96 tracheal foreign body were satisfied ,the diagnostic accuracy of spiral CT with post-processing techniques was 97 .9% ,Coincidence rate of foreign body localization was 97 .9% compared with bronchoscopy ,MPR (including CPR) and MinIP were the best in dis-playing foreign body and limitations of the trachea ,bronchial obstruction .Conclusion Low-dose CT scan can be used to diagnose tracheal foreign body of children ,but should be comprehensive analysis using axial view and various post-process-ing techniques .The direct sign of this disease is foreign bodies ,but the final diagnosis of limitations of the bronchial ob-struction needs to combine other signs .