中华劳动卫生职业病杂志
中華勞動衛生職業病雜誌
중화노동위생직업병잡지
CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES
2014年
1期
64-67
,共4页
刘贵喜%熊刘珊%陈丽琨%杨爱初%陈朝东
劉貴喜%熊劉珊%陳麗琨%楊愛初%陳朝東
류귀희%웅류산%진려곤%양애초%진조동
尘肺%体层摄影扫描仪,X线计算机%放射摄影术,胸片
塵肺%體層攝影掃描儀,X線計算機%放射攝影術,胸片
진폐%체층섭영소묘의,X선계산궤%방사섭영술,흉편
Multispiral computed tomography%Low dose%Pneumoconiosis%Application
目的 将多层螺旋CT(multispiral computed tomography,MSCT)低剂量胸部扫描用于尘肺病的早期检查和鉴别诊断.方法 对120例接尘志愿者做MSCT常规剂量与低剂量胸部扫描,以常规剂量扫描的结果为金标准,对1.5 mm和5.0~10.0 mm层厚高分辨率重建图像,多平面重建(multi-planreformat,MPR)和最大密度投影(maximum intensity projection,MIP)等后处理图像的质量与主要CT征象进行对比分析.结果 MSCT低剂量扫描对120例受检者的圆形小阴影、36例实质带带状影、1例蜂窝影、13例大阴影均能显示,98例小叶间隔增厚影、105例分枝状短线影分别显示了94例(95.9%)与98例(93.3%),对以上大、小阴影的显示,与常规剂量扫描比较,差别无统计学意义(P>0.05).对85例小气道病变、8例肺部炎性病灶、47例肺门、纵隔淋巴结肿大均显示,46例肺气肿显示了38例(82.6%);MSCT低剂量扫描的1.5mm层厚图像伪影较多,其他层厚图像伪影少;MSCT低剂量扫描的辐射剂量约为常规剂量扫描的1/3~1/5.结论 MSCT低剂量胸部扫描对尘肺病变的显示与常规剂量扫描没有差异,辐射剂量低,在尘肺病中应用是可行的.
目的 將多層螺鏇CT(multispiral computed tomography,MSCT)低劑量胸部掃描用于塵肺病的早期檢查和鑒彆診斷.方法 對120例接塵誌願者做MSCT常規劑量與低劑量胸部掃描,以常規劑量掃描的結果為金標準,對1.5 mm和5.0~10.0 mm層厚高分辨率重建圖像,多平麵重建(multi-planreformat,MPR)和最大密度投影(maximum intensity projection,MIP)等後處理圖像的質量與主要CT徵象進行對比分析.結果 MSCT低劑量掃描對120例受檢者的圓形小陰影、36例實質帶帶狀影、1例蜂窩影、13例大陰影均能顯示,98例小葉間隔增厚影、105例分枝狀短線影分彆顯示瞭94例(95.9%)與98例(93.3%),對以上大、小陰影的顯示,與常規劑量掃描比較,差彆無統計學意義(P>0.05).對85例小氣道病變、8例肺部炎性病竈、47例肺門、縱隔淋巴結腫大均顯示,46例肺氣腫顯示瞭38例(82.6%);MSCT低劑量掃描的1.5mm層厚圖像偽影較多,其他層厚圖像偽影少;MSCT低劑量掃描的輻射劑量約為常規劑量掃描的1/3~1/5.結論 MSCT低劑量胸部掃描對塵肺病變的顯示與常規劑量掃描沒有差異,輻射劑量低,在塵肺病中應用是可行的.
목적 장다층라선CT(multispiral computed tomography,MSCT)저제량흉부소묘용우진폐병적조기검사화감별진단.방법 대120례접진지원자주MSCT상규제량여저제량흉부소묘,이상규제량소묘적결과위금표준,대1.5 mm화5.0~10.0 mm층후고분변솔중건도상,다평면중건(multi-planreformat,MPR)화최대밀도투영(maximum intensity projection,MIP)등후처리도상적질량여주요CT정상진행대비분석.결과 MSCT저제량소묘대120례수검자적원형소음영、36례실질대대상영、1례봉와영、13례대음영균능현시,98례소협간격증후영、105례분지상단선영분별현시료94례(95.9%)여98례(93.3%),대이상대、소음영적현시,여상규제량소묘비교,차별무통계학의의(P>0.05).대85례소기도병변、8례폐부염성병조、47례폐문、종격림파결종대균현시,46례폐기종현시료38례(82.6%);MSCT저제량소묘적1.5mm층후도상위영교다,기타층후도상위영소;MSCT저제량소묘적복사제량약위상규제량소묘적1/3~1/5.결론 MSCT저제량흉부소묘대진폐병변적현시여상규제량소묘몰유차이,복사제량저,재진폐병중응용시가행적.
Objective To apply low-dose multispiral computed tomography (MSCT) chest scans in the early diagnosis and differential diagnosis of pneumoconiosis.Methods One hundred and twenty dust-exposed volunteers were examined by MSCT chest scans at conventional dose and low dose,and the results of conventional-dose scans were set as the gold standard.Comparative analysis was performed on the major CT findings and quality of post-processing images,including 1.5 mm and 5.0 ~10.0 mm thick high-resolution reconstructed images,multiplanar reformat images,and maximum intensity projection images.Results One hundred and twenty cases of small circular shadows,36 cases of ribbon shadows in pulmonary parenchyma,1 case of honeycombing shadow,and 13 cases of big shadows were all showed on low-dose MSCT.But 94 (95.9%) of 98 cases of interlobular septal thickening shadows and 98 (93.3%) of 105 cases of short branched shadows were detected on low-dose MSCT.There were no significant differences in display of the mentioned large and small shadows between low-dose scans and conventional-dose scans (P>0.05).Eighty-five cases of small airway disease,8 cases of pulmonary inflammatory lesions,and 47 cases of hilar and mediastinal lymph node swelling were all detected by MSCT.As for the 46 cases of emphysema,38 (82.6%) were shown.The lowdose MSCT images of 1.5 mm thickness had more artifacts than those of other thickness.The radiation dose of low-dose MSCT was about 1/3-1/5 of that in the conventional-dose MSCT.Conclusion There is no difference in display of pneumoconiosis between low-dose and conventional-dose MSCT chest scans.With lower radiation dose,low-dose MSCT can be applied in the diagnosis of pneumoconiosis.