其次，利用 3.0 - T MRI 扫描仪获取 T2 加权图像（T2WI），由放射科医生手动分割感兴趣区域（VOI），并使用 PyRadiomics 软件包提取 1781 个影像组学特征。 然后，运用树状管道优化工具（TPOT）算法，通过 5 折交叉验证构建诊断模型，并使用 Shapley Additive exPlanations（SHAP）值评估特征对模型的影响 。

为探索横纹肌肉瘤诊断新途径，研究人员利用 T2 加权 MRI 影像组学及模型，发现其预测价值，意义重大。 横纹肌肉瘤（Rhabdomyosarcomas）是儿童中最常见的软组织肉瘤。尽管治疗效果有所改善，但基于风险的治疗分类仍依赖于分期 ...

Endovaginal MRI (evMRI) at 3.0-T with T2-weighted (T2-W) and ZOnal Oblique Multislice (ZOOM)-diffusion-weighted imaging (DWI) potentially improves the detection of stage Ia/Ib1 cervical cancer. We ...

MRI IMAGING SEQUENCES. The most common MRI sequences are T1-weighted and T2-weighted scans. T1-weighted images are produced by using short TE and TR times. The contrast and brightness of the image are ...

Can index lesion tumor volume on T2 weighted MRI predict biochemical recurrence following radical prostatectomy?. JCO 35 , 32-32 (2017). DOI: 10.1200/JCO.2017.35.6_suppl.32 ...

Areas of abnormal white matter in the brains of multiple sclerosis (MS) patients appear much larger on diffusion tensor MRI than on T2-weighted MRI, a finding which could impact therapy options ...

In the early days of MRI using conventional spin echo, proton density-weighted images were acquired automatically with a T2-weighted image. These were known as the “long TR, double echo” sequence.

However, such studies didn’t assess treatment effects or include the wide variety of clinical-grade two-dimensional scans of different contrasts (T1-weighted, T2-weighted, and T2-FLAIR contrasts ...