| Popis: |
Computer tomography, which is used for diagnostics and monitoring of the abdominal aortic aneurysm, allows the users to observe the abdominal aortic aneurysm in a sequence of cross-sectional images. Often the location of the aorta has to be provided for computer tomography-based applications in diagnostics. The aim of this work is to identify the abdominal aorta without providing its initial location. The objectives include the review of the image analysis methods used for medical images, the preprocessing of images by noise reduction and border extraction, the suggestion of the method for aorta identification as well as the identification of aortic thrombus. In this work the method for aorta identification is created, which does not require any initial information about aorta’s location in an image. The method for the identification of aortic thrombus is also suggested, which requires the initial frame number where thrombus is visible. The methods suggested are first steps to automatic visualisation of the aorta and thrombus, which would be useful in clinical applications. These methods perform well and could be used in further research to extend the model for images after the branching of the aorta. |
