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Updated: Jan 17, 2026

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Published on: December 9, 2010

前列腺扩散权重成像:使用合成成像技术选择最佳重复时间.

Atsushi Higaki¹, Tsutomu Tamada¹, Mitsuru Takeuchi²

¹Department of Radiology, Kawasaki Medical School, Kurashiki Okayama, Japan.

Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine

|January 14, 2026

概括

优化前列腺扩散加权成像 (DWI) 需要调整重复时间 (TR). 较短的TRs (1000-1500毫秒) 提高了病变的明显性和背景抑制,以更好地检测前列腺癌.

关键词:

扩散权重成像技术的使用.前列腺癌是前列腺癌.重复时间时间重复时间

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科学领域:

放射学放射学是一门学科.
医疗成像医学成像
在瘤学瘤学.

背景情况:

前列腺扩散加权成像 (DWI) 在检测和特征前列腺癌方面发挥着至关重要的作用.
前列腺DWI的最佳重复时间 (TR) 尚未确立,影响图像质量和诊断准确性.

研究的目的:

评估不同TR值对前列腺DWI参数的影响.
为了确定平衡对比度,信号噪声比率 (SNR) 和前列腺癌检测中的病变显著性的最佳TR.

主要方法:

合成DWI数据集 (b=2000s/mm2) 从33名患有56种临床显著前列腺癌的患者中获得.
图像通过500,1000,1500和2000毫秒的TR值与6000毫秒的传统TR值进行了比较.
使用对比率,明显的SNR,病变明显性,PI-RADS v2.1 DWI分数和背景抑制来评估图像质量.

主要成果:

TR6000 ms显示较低的对比度,但明显的SNR高于较短的TRs.
与TR 500 ms相比,TR 1000-2000 ms改善了病变的明显性.
与TR 500 ms相比,TR 1500-6000 ms的酒后驾驶得分更高.
与TR 2000/6000 ms相比,TR 500-1500 ms提供了优越的背景抑制.

结论:

对于前列腺DWI,建议使用TR 1000 ms或TR 1500 ms,以实现对比度和噪声之间的最佳平衡.
这些TR值可能会在临床实践中提高前列腺癌的检测.