公开(公告)号：KR101008041B1

公开(公告)日：2011-01-13

申请号：KR1020090065468

申请日：2009-07-17

Applicant: 한국과학기술원

Inventor： 예종철 ,  탁성호

IPC: A61B5/026 ,  A61B5/055 ,  A61B5/1455

Abstract: PURPOSE: A system and a method thereof are provided to accurately measure a cerebral blood flow and a brain oxygen metabolic rate without hypercapnia by using optimized model parameters. CONSTITUTION: A signal input part(101) simultaneously receives a BOLD(Blood Oxygenation Level Dependent) signal and a near infrared ray spectrum signal. A correlation coefficient calculation part(102) calculates a correlation coefficient between a cerebral blood flow and a brain oxygen metabolic rate by using the BOLD signal and the near infrared ray spectrum signal. A blood flow measuring part(104) measures the cerebral blood flow from the near infrared ray spectrum signal. A oxygen metabolic rate measuring part(105) measures the brain oxygen metabolic rate by using the correlation coefficient and the cerebral blood flow.

Abstract translation: 目的：提供一种系统及其方法，通过使用优化的模型参数来精确测量脑血流量和脑氧代谢率，而无高碳酸血症。 构成：信号输入部（101）同时接收BOLD（血氧饱和度依赖）信号和近红外线频谱信号。 相关系数计算部（102）通过使用BOLD信号和近红外线光谱信号，计算脑血流量与脑氧代谢率之间的相关系数。 血液流量测量部件（104）从近红外线光谱信号测量脑血流量。 氧代谢率测量部分（105）通过使用相关系数和脑血流量测量脑氧代谢率。

公开(公告)号：KR100816018B1

公开(公告)日：2008-03-21

申请号：KR1020070005906

申请日：2007-01-19

Applicant: 한국과학기술원

Inventor： 예종철 ,  탁성호

IPC: H04N7/24

CPC classification number: G01R33/561 ,  G01R33/4824 ,  G01R33/5608

Abstract: A method for restoring a high-resolution image is provided to perform a restoring process of the image while reducing the overload of a system, by applying an FOCUSS(Focal Underdetermined System Solver) algorithm to a down-sampled image having a low resolution. Data having a sparse characteristic are output(S10). The outputted data is down-sampled, and the down-sampled data are converted into a low-resolution image(S20). The converted image is restored to a high-resolution image by using an FOCUSS algorithm(S30). If the data are projection data obtained by magnetic resonance imaging and radial type data, the low-resolution image is converted through inverse radon transformation.

Abstract translation: 提供了一种用于恢复高分辨率图像的方法，通过对具有低分辨率的下采样图像应用FOCUSS（焦点欠定系统求解器）算法来减少系统的过载，从而执行图像的恢复处理。 输出具有稀疏特性的数据（S10）。 输出的数据被下采样，下采样数据被转换成低分辨率图像（S20）。 通过使用FOCUSS算法将经转换的图像恢复到高分辨率图像（S30）。 如果数据是通过磁共振成像和径向类型数据获得的投影数据，则通过反氡变换来转换低分辨率图像。