THE VALUE OF RELAXATION-TIMES AND DENSITY-MEASUREMENTS IN CLINICAL MRI
THE VALUE OF RELAXATION-TIMES AND DENSITY-MEASUREMENTS IN CLINICAL MRI
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DOI：
10.1097/00004424-198702000-00014
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发表时间：
1987-02-01
影响因子：
6.7
通讯作者：
KAUFMAN, L
中科院分区：
文献类型：
--
作者：
CROOKS, LE;HYLTON, NM;KAUFMAN, L
MRI弛豫时间特征识别组织，特别是恶性肿瘤的希望尚未实现。这是由于测量不准确，而不是由于恶性肿瘤和许多良性病变之间的大的内在变异性和重叠。从基本组织成分预测弛豫时间也没有成功。然而，MRI提供了一个定性的测量组织水合作用，并根据弛豫时间的流动。此外，弛豫时间的逐像素图已被证明有助于理解MRI过程，预测未经尝试的技术的功效，并在许多情况下取代对具有不同测序参数的图像采集的需要。
The hope that MRI relaxation time signatures would identify tissues, specifically, malignancies, has not been realized. This is due much less to measurement inaccuracies than to a large intrinsic variability and overlaps between malignancies and many benign pathologies. Neither has there been success in predicting relaxation times from basic tissue compositions. Nevertheless, MRI provides a qualitative measure of tissue hydration, and of flow, on the basis of relaxation times. Furthermore, pixel-by-pixel maps of relaxation times have proven useful in understanding the MRI process, in predicting the efficacy of untried techniques, and replace, in many circumstances, the need for acquisition of images with diverse sequencing parameters.