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公开(公告)号：KR1020100046696A
公开(公告)日：2010-05-07
申请号：KR1020080105654
申请日：2008-10-28
Applicant: 한국과학기술원
IPC: A61B5/055
Abstract: PURPOSE: A gradient coil and a PET detector and a PET-MRI device thereof are provided to easily attach and detach a PET detector and an electronic circuit by mounting the PET detector inside a gradient coil with a tray form. CONSTITUTION: An electromagnet(310), a gradient coil(320), and a high frequency transmitting/receiving coil(330) are arranged to a coaxial. The electromagnet generates a magnetic field inside a space(340) storing a subject. The gradient coil generates the gradient magnetic field inside the electromagnet. The high frequency transmitting/receiving coil transmits the radio frequency pulse between a space storing the gradient magnetic field coil and the subject. The high frequency transmitting/receiving coil receives a MR signal induced from the subject. At least one PET detector is included inside the gradient coil. The PET detector is inserted into the gradient coil with a PET detector tray form.
Abstract translation: 目的：提供梯度线圈和PET检测器及其PET-MRI装置，通过将PET检测器安装在具有托盘形式的梯度线圈内，便于安装和拆卸PET检测器和电子电路。 构成：电磁铁（310），梯度线圈（320）和高频发射/接收线圈（330）被布置成同轴。 电磁体在存储被摄体的空间（340）内产生磁场。 梯度线圈产生电磁铁内的梯度磁场。 高频发送/接收线圈在存储梯度磁场线圈的空间与被摄体之间传送射频脉冲。 高频发送/接收线圈接收从对象引起的MR信号。 梯度线圈内至少有一个PET检测器。 PET检测器用PET检测器托盘形式插入梯度线圈中。
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公开(公告)号：KR100902518B1
公开(公告)日：2009-06-15
申请号：KR1020070058917
申请日：2007-06-15
Applicant: 한국과학기술원
CPC classification number: G01R33/5611 , G01R33/4806 , G01R33/482 , G01R33/5608 , G01R33/5619 , G01R33/56308
Abstract: 본 발명은 일반급수 병렬영상법이라는 새로운 자기공명영상법을 이용하여 고해상도 자기공명영상 생성방법 및 그 기록매체에 관한 것이다. 이러한 본 발명에 따른 일반급수 병렬영상법을 이용한 고해상도 자기공명영상 생성방법은 모든 주파수대역 중에서 한정된 저주파대역(Low Frequency)만을 나이퀴스트(Nyquist) 기준보다 낮은 빈도로 샘플링하여 자기공명데이터를 획득한다.
자기공명영상(Magnetic Resonance Imaging, MRI), 기능자기공명영상(functional Magnetic Resonance Imaging, fMRI), 일반급수(Generalized Series, GS), 병렬자기공명(Parallel MRI, pMRI).-
公开(公告)号：KR1020090026944A
公开(公告)日：2009-03-16
申请号：KR1020070092050
申请日：2007-09-11
IPC: H04N19/103 , H04N19/147
CPC classification number: H04N19/567 , H04N19/122 , H04N19/159
Abstract: A method for selecting a high speed mode and a recording medium thereof are provided to reduce complexity and the amount of calculation of an encoder and to offer coding efficiency by optimizing rate-distortion. A method for selecting a high speed mode comprises the following steps of: calculating each movement cost value about a plurality of modes in a macro block(S110); calculating each cost value of rate-distortion about a part of modes based on the calculated values(S130); and selecting the mode having the smallest values(S140). A part of modes includes a mode having the smallest movement cost values.
Abstract translation: 提供了一种用于选择高速模式的方法及其记录介质，以降低编码器的复杂性和计算量，并通过优化速率失真来提供编码效率。 一种用于选择高速模式的方法包括以下步骤：在宏块中计算关于多个模式的每个运动成本值（S110）; 基于计算值计算关于一部分模式的速率失真的每个成本值（S130）; 并选择具有最小值的模式（S140）。 模式的一部分包括具有最小运动成本值的模式。
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34.发明授权병렬 자기공명영상을 위한 위상배열 코일 영상에서의 밝기비균등성을 투영윤곽에 기반을 두어 수정하는 방법, 이를실행하기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는기록매체. 有权在这种情况下，可以使用其他方法来实现这些目的，特别是在现有技术中可能会遇到的问题。
公开(公告)号：KR100656156B1
公开(公告)日：2006-12-13
申请号：KR1020050062408
申请日：2005-07-11
Applicant: 한국과학기술원
IPC: A61B5/055
Abstract: A method for correcting brightness inequality in a phased-array coil image for a parallel magnetic resonance imaging based on a projection profile is provided to obtain an optimum result image by correcting each image with software without investing cost. A method for correcting brightness inequality in a phased-array coil image for a parallel magnetic resonance imaging based on the projection profile includes the steps of: acquiring an initial image by integrating an image signal obtained from each coil based on a projection profile; calculating each initial image and adjusting smoothly the initial image by applying nonlinear curve fitting to the projection profile; acquiring the adjusted image having a brightness distribution map by back-projecting the initial image after the adjusting step; acquiring an equal image having an equal brightness distribution by dividing the initial image of the pre-adjusting step by the adjusted image of the post-adjusting step, and calculating a mean value; combining the each equal image and acquiring the combined image having an equal brightness distribution.
Abstract translation: 提供了一种基于投影轮廓校正用于平行磁共振成像的相控阵列线圈图像中亮度不等的方法，以通过用软件校正每个图像而无需投入成本来获得最佳结果图像。 一种用于基于投影轮廓校正平行磁共振成像的相控阵线圈图像中亮度不等的方法包括以下步骤：通过基于投影轮廓对从每个线圈获得的图像信号进行积分来获取初始图像; 通过对投影轮廓应用非线性曲线拟合来计算每个初始图像并平滑地调整初始图像; 通过在调节步骤之后反投影初始图像来获取具有亮度分布图的调节图像; 通过将预调节步骤的初始图像除以调节后步骤的调节图像来获得具有相等亮度分布的相等图像，并且计算平均值; 组合每个相等的图像并获取具有相等亮度分布的组合图像。
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公开(公告)号：KR100608036B1
公开(公告)日：2006-08-02
申请号：KR1019990035846
申请日：1999-08-27
Abstract: 본 발명은, 영상 데이터를 세그먼테이션하는 방법 및 그 장치에 관한 것으로, 종래의 영상 데이터 소스 코더와 병행하여 동작하며, 블록 DCT 계수와 블록 모션 벡터를 세그먼테이션 특성으로 이용하여, 영상 데이터에서 움직이는 물체를 구분하는 방법과 장치를 개시한다.
본 발명에 의하면, 영상 데이터를 블록 단위로 시간 특성을 추출하고 공간 특성을 추출하여 얻은 정보를 이용해서 영상의 물체와 배경을 세그먼테이션하고, 물체와 배경에 서로 다른 양자화 변수를 적용하여, 영상 데이터를 전송할 때에 같은 대역폭을 사용하더라도 관심있는 부분에 대해 상대적으로 더 선명한 혹은 더 좋은 화질을 부여할 수 있게 된다.-
Patent Agency Ranking
公开(公告)号：KR100462789B1
公开(公告)日：2004-12-20
申请号：KR1020020033019
申请日：2002-06-12
Applicant: 한국과학기술원
IPC: H04N1/41
Abstract: PURPOSE: A method and an apparatus for compressing multiple code data using binary arithmetic coding are provided to improve compression and release speed by using binary arithmetic coding, and increase a compression rate by coding bits with conditional probability to binary code. CONSTITUTION: Multiple code data is transformed into binary type data(S110). An MSB(most significant bit) is coded by using probability having a null condition(S120). A second bit is coded by using conditional probability having considered a value of the MSB(S130). A kth bit is coded by using conditional probability having considered all values of a superior position(S140).
Abstract translation: 目的：提供一种使用二进制算术编码压缩多码数据的方法和装置，以通过使用二进制算术编码来提高压缩和释放速度，并且通过将具有条件概率的比特编码为二进制码来提高压缩率。 构成：多码数据被转换为二进制类型数据（S110）。 通过使用具有空状态的概率来对MSB（最高有效位）进行编码（S120）。 通过使用考虑了MSB的值的条件概率来对第二比特进行编码（S130）。 通过使用考虑了优越位置的所有值的条件概率来对第k个比特进行编码（S140）。
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公开(公告)号：KR100420791B1
公开(公告)日：2004-03-02
申请号：KR1020010013716
申请日：2001-03-16
Applicant: 한국과학기술원
IPC: G06T17/10
Abstract: PURPOSE: A 3D volume-plan coupled image generating method is provided to obtain an image in which a planer image of a body part is coupled with related volumetric portions, thereby providing images more precise and easier to understand in the medical fields. CONSTITUTION: A method for generating 3D volume-plan coupled images includes a volume rendering step of shearing an original image data with respect to an object by the shear-warp algorithm to obtain volume data on the sheared plan and generating an intermediate volume image formed on an intermediate image plan by mixing(S11), an MPR(Multi-Planer Reconstruction) image extracting step of generating topographical images with respect to a selected portion by MPR and carrying out affine transform proper to the intermediate image plan, an image coupling step of coupling the intermediate volume image with the MPR image(S12), and a volume-plan coupled image generating step of warping the intermediate volume image-MPR coupled image for generating a final volume-plan coupled image with respect to the object(S28,S29).
Abstract translation: 目的：提供一种3D体平面耦合图像生成方法，以获得其中身体部分的平面图像与相关体积部分耦合的图像，由此提供更精确且更容易理解的医学领域中的图像。 用于生成3D体绘图耦合图像的方法包括体绘制步骤，该体绘制步骤通过剪切变形算法相对于对象剪切原始图像数据，以获得剪切计划上的体积数据，并生成在其上形成的中间体积图像 通过混合（S11）的中间图像计划，MPR（多平面重建）图像提取步骤，通过MPR针对选择的部分生成地形图像，并执行适合于中间图像计划的仿射变换;图像耦合步骤， 将中间体积图像与MPR图像耦合（S12）;以及体积平面耦合图像生成步骤，用于对中间体积图像-MPR耦合图像进行翘曲以生成关于对象的最终体积平面耦合图像（S28，S29 ）。
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公开(公告)号：KR101826702B1
公开(公告)日：2018-03-22
申请号：KR1020160086408
申请日：2016-07-07
Abstract: 자기공명영상장치및 그방법이개시된다. 개시된실시예들에의한자기공명영상장치는그라디언트에코시퀀스에기초하여대상체에대한자기공명신호를획득하는제어부; 및자기공명신호의위상의변화량이가장큰 시점에대응되는제1 영상및 위상의변화량이가장작은시점에대응되는제2 영상을획득하고, 제1 영상및 제2 영상을이용하여대상체의동맥을포함하는동맥영상을획득하는영상처리부를포함할수 있다.
Abstract translation: 公开了一种磁共振成像装置及其方法。 根据所公开的实施例的磁共振成像设备包括：控制单元，用于基于梯度回波序列获取用于目标物体的磁共振信号; 并且，取得与磁共振信号的相位的变化量最大的时刻对应的第二图像和相位的变化量最小的时刻， 以及用于获取包括动脉图像的动脉图像的图像处理单元。
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