Research On Curved Planar Reformation Technology Of Coronary Artery

Medical imaging and clinical medicine have a trend to the direction of refinement,which urges medical images to be more visualized and all-sided. It has been a hotspot todisplay the inner information of curved organs in a image. Curved planar reformation ofmedical image is aimed at organs with curved structure and displays their panoramas bytechnologies of extracting points, curve-fitting and curved scanning, et al. So in order toget inner lesion information of curved organs, it is necessary for organs to be curved planarreformation. Coronary artery is selected as study object to be curved planar reformed.Firstly, the virtual three-dimensional data field of the heart is built. Any slice ofinterest can be obtained by adjusting the size, position and angle of slice, which is helpfulto extract the outline of coronary artery.Afterwards, how to extract the points coordinates is studied. These points representthe outline of coronary artery. The three-dimensional coordinate system based on object isbuilt using principle of parallel projection. Points can be obtained using needle puncturingfor points.Secondly, extracted points are curve fitted. How to make the fitting curve be closer tothe structure of coronary artery is discussed. The smooth curve is fitted. The effect ofdifferent number of interpolation on reformation quality is analyzed, which make thereformation quality optimal.Finally, the outline is projected along the interested direction to get the scanningcurved plane. The curved plane of coronary artery is displayed in a two-dimensional planeusing domain method of spatial curved plane projection.Two group of cardiac dataset is employed to experiment using the algorithm of thepaper. The experimental results that, compared with three-dimensional clipping methodand three-dimensional data field method, the increment for the extracting speed of thecardiac slices is about4to6frames per second, and the rendering time is shorter. On theaspect of rendering quality, appropriate interpolation times can make the image of coronaryartery curved plane more clear and complete, which is helpful for doctors to analyze the lesion clearly and satisfies the demands of actual clinical.