CAJ | 학술논문

目的：探讨3.0T 高场磁共振成像(MRI)对中央型肺癌肿块(以下简称肿块)与阻塞性改变(阻塞性肺不张、肺炎)的鉴别价值。方法对35例中央型肺癌合并阻塞性改变患者行3.0T MRI 检查(T1 WI、T2 WI、DWI,b=0,400,1000 s/mm2),测量、比较肿块与阻塞性改变感兴趣区(ROI)的表观扩散系数(ADC)值和信号强度(signal intensity,SI)值,观察肿块与阻塞性改变在各序列的信号特征,评价各序列对二者的鉴别能力。结果35例中,T1 WI、T2 WI、DWI 和 T2 WI+DWI 图像上能区分肺门肿块与阻塞性改变者分别为5例(14%)、22例(63%)、27例(77%)和30例(86%)。两两比较,肿块与阻塞性改变的鉴别能力在 T2 WI 上优于T1 WI(P <0.05),在 DWI 上优于 T1 WI(P <0.05),在 T2 WI 与 DWI 上无显著性差异(P >0.05)；联合应用 DWI 与 T2 WI 鉴别能力明显高于单独运用 T2 WI。肿块的 ADC 值低于阻塞性改变(P <0.05),二者的 ADC 值分别为(1.18±0.43)×10-3 s/mm2、(2.28±0.57)×10-3 s/mm2；肿块在 DWI 的 SI 高于阻塞性改变(P <0.05)。结论3.0T MRI 可用于鉴别肿块与阻塞性改变,DWI 是T2 WI 的有效补充。
목적：탐토3.0T 고장자공진성상(MRI)대중앙형폐암종괴(이하간칭종괴)여조새성개변(조새성폐불장、폐염)적감별개치。방법대35례중앙형폐암합병조새성개변환자행3.0T MRI 검사(T1 WI、T2 WI、DWI,b=0,400,1000 s/mm2),측량、비교종괴여조새성개변감흥취구(ROI)적표관확산계수(ADC)치화신호강도(signal intensity,SI)치,관찰종괴여조새성개변재각서렬적신호특정,평개각서렬대이자적감별능력。결과35례중,T1 WI、T2 WI、DWI 화 T2 WI+DWI 도상상능구분폐문종괴여조새성개변자분별위5례(14%)、22례(63%)、27례(77%)화30례(86%)。량량비교,종괴여조새성개변적감별능력재 T2 WI 상우우T1 WI(P <0.05),재 DWI 상우우 T1 WI(P <0.05),재 T2 WI 여 DWI 상무현저성차이(P >0.05)；연합응용 DWI 여 T2 WI 감별능력명현고우단독운용 T2 WI。종괴적 ADC 치저우조새성개변(P <0.05),이자적 ADC 치분별위(1.18±0.43)×10-3 s/mm2、(2.28±0.57)×10-3 s/mm2；종괴재 DWI 적 SI 고우조새성개변(P <0.05)。결론3.0T MRI 가용우감별종괴여조새성개변,DWI 시T2 WI 적유효보충。
Objective To investigate diagnosis value for differentiating central lung cancer from obstructive atelectasis and pneu-monia at 3.0T MR.Methods Thirty-five cases that had diagnosed to be central lung cancer with obstructive atelectasis by clinic and pathology underwent MRI scan at 3.0T MR.Scan sequences were as followed,T1 WI,T2 WI and DWI (b=0,400,1 000 s/mm2 ). ADC and SI of central lung cancer and collapse lung tissues were measured and compared.The differentiation ability of T1 WI,T2 WI and DWI were compared.Results Five cases could be distinguished on T1 WI images,twenty-two on T2 WI,twenty-seven on DWI, thirty on T2 WI and DWI.The differentiation ability of T2 WI was superior to that of T1 WI.The differentiation ability of DWI was superior to that of T1 WI,but there was no difference between DWI and T2 WI.The differentiation ability of combining DWI with T2 WI was better than that of T2 WI single.The mean ADC value of central lung cancer(1.18±0.43)×10 -3 s/mm2 was significantly lower than that of collapse lung tissues(2.28±0.57)×10 -3 s/mm2 (P <0.05);The mean signal intensity of central lung cancer was higher than that of obstructive atelectasis and pneumonia on DWI images(P <0.05).Conclusion 3.0T MRI can be used to differen-tiate central lung cancer from obstructive lobar collapse.DWI is an effective complement of T2 WI.