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Contrast-enhanced multiphase liver CT is currently a standard of practice in hepatic imaging for medical diagnosis of liver diseases. The main contribution of this paper is an image registration method which finds an accurate alignment of arterial phase and portal venous phase liver CT images. The proposed method combines global rigid registration (affine) and local nonrigid deformable registration...
How to design a fast and efficient method for message digest is always a hotspot in modern cryptographic researches. A message digest method based on chaotic map for medical images is proposed in this paper. At the beginning of this approach, an original message is grouped to generate an initial vector. And then the entire binary bits of the message are utilized for the chaotic map function which...
Low contrast and fuzzy edge are usually exist in the tissues such as liver, stomach, spleen, muscle in abdominal CT image, which makes the segmentation of these organs to be one of the most difficult tasks in medical image CAD system. Based on the fact that the imaginary part of Gabor function is an effective and robust edge detector, an adaptive Gabor filtering method is proposed in this paper, which...
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