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Abstract：
Conventional dynamic contrast enhanced (DCE) magnetic resonance (MR) hardly achieves a good imaging performance of arteries and lymph nodes in the breast area. Therefore, a new imaging method is needed for the assessment of breast arteries and lymph nodes.
We performed prospective research. The research included 52 patients aged from 25 to 64 between June 2019 and April 2020. The isotropic e-THRIVE sequence scanned in the coronal direction after DCE-THRIVE. Reconstructed images obtained by DCE-THRIVE and the coronal e-THRIVE were compared mainly in terms of the completeness of the lateral thoracic artery, thoracodorsal artery, and lymph nodes. We proposed a criterion for evaluating image quality. According to the criterion, images were assigned a score from 1 to 5 according to the grade from low to high. Two board-certified doctors evaluated images individually, and their average score was taken as the final result. The chi-square test was used to assess the difference.
The coronal e-THRIVE score is 4.60, which is higher than the DCE-THRIVE score of 3.48, there are significant differences between the images obtained by two sequences (P = 1.2712e-8). According to the score of images, 44 patients (84.61%) had high-quality images on the bilateral breast. Only 3 patients\' (5.77%) images were not ideal on both sides. The improved method is effective for most patients to get better images.
The proposed coronal e-THRIVE scan can get higher quality reconstruction images than the conventional method to visualize the course of arteries and the distribution of lymph nodes in most patients, which will be helpful for the clinical follow-up treatment.
We performed prospective research. The research included 52 patients aged from 25 to 64 between June 2019 and April 2020. The isotropic e-THRIVE sequence scanned in the coronal direction after DCE-THRIVE. Reconstructed images obtained by DCE-THRIVE and the coronal e-THRIVE were compared mainly in terms of the completeness of the lateral thoracic artery, thoracodorsal artery, and lymph nodes. We proposed a criterion for evaluating image quality. According to the criterion, images were assigned a score from 1 to 5 according to the grade from low to high. Two board-certified doctors evaluated images individually, and their average score was taken as the final result. The chi-square test was used to assess the difference.
The coronal e-THRIVE score is 4.60, which is higher than the DCE-THRIVE score of 3.48, there are significant differences between the images obtained by two sequences (P = 1.2712e-8). According to the score of images, 44 patients (84.61%) had high-quality images on the bilateral breast. Only 3 patients\' (5.77%) images were not ideal on both sides. The improved method is effective for most patients to get better images.
The proposed coronal e-THRIVE scan can get higher quality reconstruction images than the conventional method to visualize the course of arteries and the distribution of lymph nodes in most patients, which will be helpful for the clinical follow-up treatment.
摘要：
传统的动态对比增强（DCE）磁共振（MR）很难实现乳腺区域动脉和淋巴结的良好成像性能。因此,需要一种新的成像方法来评估乳腺动脉和淋巴结.
我们进行了前瞻性研究。该研究包括2019年6月至2020年4月之间年龄在25至64岁之间的52名患者。在DCE-THRIVE之后，各向同性的e-THRIVE序列在冠状方向上扫描。通过DCE-THRIVE和冠状e-THRIVE获得的重建图像主要根据胸外侧动脉的完整性进行比较，胸背动脉,和淋巴结。我们提出了一种评价图像质量的标准。根据标准,根据从低到高的等级,图像分为1~5分.两名获得董事会认证的医生分别评估了图像，他们的平均分作为最终结果。使用卡方检验来评估差异。
冠状e-THRIVE得分为4.60，高于DCE-THRIVE得分为3.48，两个序列获得的图像之间存在显着差异（P=1.2712e-8）。根据图像的得分，44例患者（84.61%）的双侧乳房有高质量的图像。只有3例患者（5.77%）的图像在两侧都不理想。改进后的方法对大多数患者有效，可以获得更好的图像。
拟议的冠状e-THRIVE扫描可以获得比常规方法更高质量的重建图像，以可视化大多数患者的动脉进程和淋巴结分布，这将有助于临床后续治疗。
我们进行了前瞻性研究。该研究包括2019年6月至2020年4月之间年龄在25至64岁之间的52名患者。在DCE-THRIVE之后，各向同性的e-THRIVE序列在冠状方向上扫描。通过DCE-THRIVE和冠状e-THRIVE获得的重建图像主要根据胸外侧动脉的完整性进行比较，胸背动脉,和淋巴结。我们提出了一种评价图像质量的标准。根据标准,根据从低到高的等级,图像分为1~5分.两名获得董事会认证的医生分别评估了图像，他们的平均分作为最终结果。使用卡方检验来评估差异。
冠状e-THRIVE得分为4.60，高于DCE-THRIVE得分为3.48，两个序列获得的图像之间存在显着差异（P=1.2712e-8）。根据图像的得分，44例患者（84.61%）的双侧乳房有高质量的图像。只有3例患者（5.77%）的图像在两侧都不理想。改进后的方法对大多数患者有效，可以获得更好的图像。
拟议的冠状e-THRIVE扫描可以获得比常规方法更高质量的重建图像，以可视化大多数患者的动脉进程和淋巴结分布，这将有助于临床后续治疗。
