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相关概念视频

Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

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Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
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相关实验视频

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Use of MRI-ultrasound Fusion to Achieve Targeted Prostate Biopsy
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前列腺癌生长模式如何影响检测和多参数MRI的Interreader协议.

Daniel Hausmann1, N Rupp2, B Kuzmanic3

  • 1Department of Radiology, Kantonsspital Baden, affiliated Hospital for Research and Teaching of the Faculty of Medicine of the University of Zurich, Baden, Switzerland; Department of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

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概括
此摘要是机器生成的。

多参数MRI (mpMRI) 可以错过具有透生长的侵袭性前列腺癌 (PCa). 扩张性生长病变显示较低的ADC值和较高的PI-RADS得分,有助于检测.

关键词:
检测 检测 检测 检测 检测扩散限制的扩散限制扩张性的增长 扩张性的增长潜入式增长是一种潜入式增长.多参数磁共振成像 多参数磁共振成像皮拉德斯 (PI-RADS) 是一个前列腺新生体前列腺瘤.

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科学领域:

  • 放射学 放射学是一门学科.
  • 病理学 病理学 病理学
  • 在瘤学瘤学.

背景情况:

  • 多参数MRI (mpMRI) 增强了前列腺癌 (PCa) 检测,而不是系统活检.
  • 具有侵略性的PCa形式,特别是那些具有透生长 (INF) 的形式,可以通过mpMRI错过.
  • 与其他生长模式相比,INF病变的扩散限制较小.

研究的目的:

  • 研究前列腺癌生长模式对使用mpMRI检测病变的影响.
  • 为了将基因病理生长模式 (扩展性与透性) 与mpMRI发现相关联,包括PI-RADS得分和明显扩散系数 (ADC) 值.

主要方法:

  • 对52名急性前列腺切除术患者进行了手术前的mpMRI后期分析.
  • 两个病理学家对病变生长模式 (扩展性/INF) 的独立分类.
  • 独立的PI-RADS v2.1由两名放射科医生根据病理局部进行分类.
  • 测量ADC值与组织病理学相关;使用科恩卡帕评估的读者间一致性.

主要成果:

  • 对于增长模式分类 (κ=0.88) 和PI-RADS评分 (κ=0.90) 的高度一致.
  • PI-RADS得分与扩张性 (EXP) 增长模式有显著的相关性.
  • 在EXP病变中,ADC值较低 (0.83×10-3 mm2/s),而不是INF病变 (0.97×10-3 mm2/s).
  • 透性病变在T2加权成像中更频繁地被遗漏 (29%与4%相比).

结论:

  • 潜入性生长模式的前列腺癌更频繁地被mpMRI遗漏.
  • 扩张性增长模式与较低的ADC值和更高的PI-RADS得分有关.
  • 了解生长模式可以改善对mpMRI的解释,以进行积极的PCa检测.