在纵向MRI中进行脑转移的自动检测和多组分细分
Vincent Andrearczyk1,2, Luis Schiappacasse3, Daniel Abler1,4
1Institute of Informatics, HES-SO Valais-Wallis University of Applied Sciences and Arts Western Switzerland, Sierre, Switzerland.
Scientific reports
|December 31, 2024
概括
使用MRI对脑转移的自动细分显著提高了检测和重新细分的准确性. 这种方法通过准确识别新的病变和跟踪随时间的变化,提高了放射治疗的规划.
科学领域:
- 医学成像分析分析 医学成像分析
- 人工智能在瘤学中的应用
- 放射治疗的规划和评估.
背景情况:
- 在MRI中手动对大脑转移 (BM) 的细分是劳动密集的,容易出现错误,影响放射治疗的规划和随访.
- 自动化方法对于提高病变检测和细分的效率和准确性至关重要.
研究的目的:
- 在纵向MRI扫描中开发和评估用于检测和细分脑转移的自动化方法.
- 通过使用先前时间点的信息重新划分病变来提高细分性能.
- 进行多组分细分,区分增强组织,和亡.
主要方法:
- 利用了来自49名骨髓瘤患者的184个对比度增强的T1加权MRI的回顾性数据集.
- 开发了一种重新细分技术,从之前的扫描中传播病变口罩作为额外的输入.
- 采用单尾t测试来比较细分和检测指标,显著性设置为p < 0.05.
主要成果:
- 在新病变细分方面获得0.79的子相似系数 (DSC) 和0.80的F1得分.
- 在后续扫描中,重新细分模型的表现明显优于标准细分模型 (DSC 0.78 与 0.56,F1 评分 0.88 与 0.60).
- 再细分改善了增强病变 (DSC 0.76 与 0.53) 和胀 (0.52 与 0.47) 的性能,而缩细分保持了可比性 (0.62 与 0.63).
结论:
- 在随访MRI扫描中,新的脑转移的自动细分和随后的重新细分是可行的和有效的.
- 重分割方法显著提高了准确性,特别是在纵向跟踪和放射治疗规划方面.
- 这种方法克服了细分小病变的挑战,无论病变大小如何,都显示出一致的性能.
相关概念视频
Magnetic Resonance Imaging
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Brain Imaging
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).


