3特斯拉的扩散加权乳房MRI：提高病变的可见性和图像质量，结合了水分兴奋和光谱脂肪饱和度
Diffusion-weighted Breast MRI at 3 Tesla: Improved Lesion Visibility and Image Quality with a Combination of Water-excitation and Spectral Fat Saturation
影响因子:3.90000
分区:医学2区 / 核医学2区
发表日期:2023 Sep
作者:
Stephanie Tina Sauer, Sara Aniki Christner, Tanja Schlaiß, Corona Metz, Andrea Schmid, Andreas Steven Kunz, Thomas Pabst, Elisabeth Weiland, Thomas Benkert, Thorsten Alexander Bley, Jan-Peter Grunz
摘要
在具有扩散加权成像（DWI）的乳房MRI中，抑制脂肪对于消除显性脂质信号至关重要。这项研究评估了在高分辨率3-Tesla乳房MRI中，在83例患者中，对2个回声平面DWI序列进行了高分辨率3-TESLA乳房MRI MRI（50.6年），在2 echo-pplanar dwi序列中进行了高分辨率3- tesla乳房MRI MRI，在高分辨率3-TESLA乳房MRI中评估了反转恢复（SPAIR）的组合恢复（SPAIR）。三位放射科医生评估了88个局灶性病变（28个恶性，60良性）的总体DWI质量和差异性，其B值为800和1600 s/mm2，以及明显的扩散系数（ADC）图。对于每种脂肪抑制方法和B值，除了测量了兴趣的标准化区域中DWI和ADC值的信号强度外，还确定了最长的病变直径。B值，图像质量（所有p <0.001）和病变可依赖曲（所有p≤0.003）（所有p≤0.003）均以wexfs-dwi的比较与贝恩·莱斯（Benign）相比，不论病变表征如何，WEXFS-DWI提供了1600 s/mm2（全p≤0.05）的较高信号到噪声，对比度和信号强度比。与Spair Fat抑制相比，WEXF的对比增强T1减法图像和DWI之间的病变尺寸差异（所有P≤0.007）。 WEXFS-DWI的恶性病变中平均ADC值较低（p <0.001），而良性病变中这两种技术之间均未确定ADC差异（p = 0.947）。WEXFS-DWI提供了比标准的Spair-DWI更好的主观和客观图像质量，从而使BAINDARD-SPAIR-DWI更准确地估算了Benignign和Malignignignignignigation lignignigrant Lesion Lesion Lesion Lesion。
Abstract
In breast MRI with diffusion-weighted imaging (DWI), fat suppression is essential for eliminating the dominant lipid signal. This investigation evaluates a combined water-excitation-spectral-fatsat method (WEXfs) versus standard spectral attenuated inversion recovery (SPAIR) in high-resolution 3-Tesla breast MRI.Multiparametric breast MRI with 2 echo-planar DWI sequences was performed in 83 patients (50.1 ± 12.6 years) employing either WEXfs or SPAIR for fat signal suppression. Three radiologists assessed overall DWI quality and delineability of 88 focal lesions (28 malignant, 60 benign) on images with b values of 800 and 1600 s/mm2, as well as apparent diffusion coefficient (ADC) maps. For each fat suppression method and b value, the longest lesion diameter was determined in addition to measuring the signal intensity in DWI and ADC value in standardized regions of interest.Regardless of b values, image quality (all p < 0.001) and lesion delineability (all p ≤ 0.003) with WEXfs-DWI were deemed superior compared to SPAIR-DWI in benign and malignant lesions. Irrespective of lesion characterization, WEXfs-DWI provided superior signal-to-noise, contrast-to-noise and signal-intensity ratios with 1600 s/mm2 (all p ≤ 0.05). The lesion size difference between contrast-enhanced T1 subtraction images and DWI was smaller for WEXfs compared to SPAIR fat suppression (all p ≤ 0.007). The mean ADC value in malignant lesions was lower for WEXfs-DWI (p < 0.001), while no significant ADC difference was ascertained between both techniques in benign lesions (p = 0.947).WEXfs-DWI provides better subjective and objective image quality than standard SPAIR-DWI, resulting in a more accurate estimation of benign and malignant lesion size.