A fast and accurate algorithm for volume determination in MRI.
A fast and accurate algorithm for volume determination in MRI.
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一种快速准确的 MRI 体积确定算法。
DOI：
10.1118/1.596851
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发表时间：
1992
期刊：
影响因子：
3.8
通讯作者：
Roebuck,JR
中科院分区：
文献类型：
--
作者：
Peck,DJ;Windham,JP;Soltanian-Zadeh,H;Roebuck,JR
由于计算准确体积所需的时间，临床MRI研究中的体积测定是禁止的。加快计算速度的技术容易出现大的误差，这使得准确诊断变得不切实际。一个线性滤波器，称为本征图像滤波器，已经开发出来，从其他功能，干扰其观察的图像中分离出所需的功能。使用这种技术产生的图像（特征图像），计算体积所需的操作员交互量显着减少。该技术还具有校正部分体积平均效应的能力，因此可以确定更准确的体积。该技术被应用到计算机模拟和两个幻影研究。计算体积所需的时间小于1分钟，每个切片的准确性和再现性的误差小于2%的所有研究。
The determination of volumes in clinical MRI studies are prohibitive because of the time required to compute an accurate volume. Techniques that speed up the calculation are prone to large errors which make most impractical for an accurate diagnosis. A linear filter, called the eigenimage filter, has been developed that separates a desired feature from other features which interfere with its observation in an image. Using the images produced by this technique (eigenimages), the amount of operator interaction required to calculate volumes are significantly reduced. The technique also has the ability to correct for partial volume averaging effects and as a result a more accurate volume can be determined. The technique was applied to a computer simulation and two phantom studies. The time required to calculate the volume was less than 1 min per slice and the errors in accuracy and reproducibility were less than 2% for all studies.