首页>
外国专利>
The multiplex phase due to the propagation of the seed border between the images, manner and device null of border selecting in the multiplex slice heart MRI
The multiplex phase due to the propagation of the seed border between the images, manner and device null of border selecting in the multiplex slice heart MRI
展开▼
机译:多重相位是由于图像之间的种子边界的传播,多重切片心脏MRI中边界选择的方式和设备无效所致
展开▼
页面导航
摘要
著录项
相似文献
摘要
Contours are extracted from corresponding features, namely the left ventricular blood pool-endocardium interfaces, of a plurality of images collected as a multi-phase multi-slice cardiac Magnetic Resonance Imaging (MRI) study which are accessible by a computer in response to user input to the computer of a seed contour identifying the contour feature to be extracted in an initial image (I00)at a middle slice position and a predetermined phase position, namely end of diastole. From this as the only contour (CS) inputted by the user, contours are extracted from each image by a sequence of automatic propagation of determinations of extracted, or final contours by forming from a final contour (CF) for an image I(00), a seed contour for a not yet processed image (I1,0,I-1,0,I0,1) which immediately adjoins in slice or phase position. For each image use is made of a seed-to-final propagation function in the form of an energy minimizing active contour function which has internal energy due to settable resistances to stretching and bending and image derived energy related to the gradient of the image. The final contour (CF) developed in the initial image (I00) is passed as a provisional contour to images which immediately adjoin in phase position where they are further propagated by an in-phase provisional-to-seed propagation function and are passed to images which immediately adjoin in slice position, where they are further propagated by an in-slice provisional-to-seed propagation function. After extraction of the contours, and possible automatic post-processing for correction thereof, these contours are used by a computational or visualization application, such as the computation of an ejection fraction.
展开▼