[乳腺不同视野扩散加权成像的研究]
[Study on the different field-of-view diffusion weighted imaging of the breast].
作者信息
Dong Haibo, Xu Haidong, Zhang Yuqin, Li Yadi, Li Hui
机构信息
Department of Radiology,Ningbo Medical Center Lihuili Hospital, Ningbo 315041, China. Email:
Department of Radiology,Ningbo Medical Center Lihuili Hospital, Ningbo 315041, China.
出版信息
Zhonghua Yi Xue Za Zhi. 2014 Jul 15;94(27):2132-4.
OBJECTIVE
To compare the application value between reduced field-of-view diffusion weighted imaging (rFOV DWI) and single-shot echo-planar-imaging diffusion weighted imaging (SS-EPI DWI) of the breast.
METHODS
78 cases (68 normal breast, 10 breast cancer) were canned with SS-EPI DWI (FOV 360 mm × 360 mm), rFOV DWI1 (FOV 360 mm × 180 mm) and rFOV DWI2 (FOV 280 mm × 140 mm). Image quality and ADC values of breast were compared with three groups. SNR were compared with rFOV DWI1 and rFOV DWI2.
RESULTS
The image quality score of 78 cases was 4.74 by rFOV DWI1, 3.59 by SS-EPI DWI and 3.55 by rFOV DWI2. The mean ADC value of 68 normal breast was 1.832 × 10⁻³ mm²/s by SS-EPI DWI, 1.701 × 10⁻³ mm²/s by rFOV DWI1 and 1.615 × 10⁻³ mm²/s by rFOV DWI2. The mean ADC value of 10 breast cancer was 1.345 × 10⁻³ mm²/s by SS-EPI DWI, 1.220 × 10⁻³ mm²/s by rFOV DWI1 and 1.149 × 10⁻³ mm²/s by rFOV DWI2.SNR of rFOV DWI1 images was much higher than FOV DWI2.
CONCLUSION
Sizeable rFOV DWI has higher resolution, less distortion than SS-EPI DWI, rFOV DWI will be useful in the diagnosis of the breast diseases.
目的
比较缩小视野扩散加权成像（rFOV DWI）与单次激发回波平面成像扩散加权成像（SS-EPI DWI）在乳腺成像中的应用价值。
方法
对78例患者（68例正常乳腺、10例乳腺癌）进行SS-EPI DWI（视野360 mm×360 mm）、rFOV DWI1（视野360 mm×180 mm）和rFOV DWI2（视野280 mm×140 mm）扫描。比较三组乳腺的图像质量及表观扩散系数（ADC）值，并比较rFOV DWI1与rFOV DWI2的信噪比（SNR）。
结果
78例患者的图像质量评分，rFOV DWI1为4.74分，SS-EPI DWI为3.59分，rFOV DWI2为3.55分。68例正常乳腺的平均ADC值，SS-EPI DWI为1.832×10⁻³mm²/s，rFOV DWI1为1.701×10⁻³mm²/s，rFOV DWI2为1.615×10⁻³mm²/s。10例乳腺癌的平均ADC值，SS-EPI DWI为1.345×10⁻³mm²/s，rFOV DWI1为1.220×10⁻³mm²/s，rFOV DWI2为1.149×10⁻³mm²/s。rFOV DWI1图像的SNR远高于rFOV DWI2。
结论
较大视野的rFOV DWI比SS-EPI DWI具有更高的分辨率和更少的图像变形，rFOV DWI在乳腺疾病诊断中具有重要价值。
Zotero 插件