发明名称 |
Modification of the Normalized Difference Method for real-time optical tomography |
摘要 |
Computation-saving techniques and stability-adding techniques provide for fast, accurate reconstructions of a time series of images involving large-scale 3D problems, such as real-time image recovery in an optical tomography imaging system. A system equation for a target medium (116) such as tissue is solved using a Normalized Difference Method (NDM) (250). Because of the inherent stability of the NDM solutions, a weight matrix (W) of the system equation can be provided for a given point in a time series (220), then reused without recalculation at subsequent points. Further savings are achieved by decomposing W using singular value decomposition or direct matrix decomposition, transforming it to reduce its dimensions, and/or scaling it to achieve a more stable numerical solution. Values of measured energy (112) emerging from the target medium are back-substituted into the system equation for the different points to obtain the target medium properties. |
申请公布号 |
EP1493123(A1) |
申请公布日期 |
2005.01.05 |
申请号 |
EP20030717000 |
申请日期 |
2003.04.07 |
申请人 |
BARBOUR, RANDALL L.;PEI, YALING |
发明人 |
BARBOUR, RANDALL L.;PEI, YALING |
分类号 |
G01N21/47;G01N21/64;A61B5/00;A61B10/00;G01N21/17;G01N21/35;G01N21/49;G01N21/76;G06F15/00;G06K9/00;G06T11/00;(IPC1-7):G06K9/00 |
主分类号 |
G01N21/47 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|