Dr. Engr. Sami ur Rahman Assistant Professor Department of Computer Science University of Malakand Medical Imaging Principle of 3D Image acquisition

X-Rays Imaging First Medical Image Image Courtesy: University of Freiburg, Germany  Most common medical imaging modality  Uses high energy radiation that penetrates through skin and tissue but not through bones. This produces a radiograph (2D X-rays image)  Areas like bone that absorb more radiation appear whiter while areas that the radiation passes through appear dark ESxD-yueHtPG0AcpWYSRX6EcAhVgriEcOHY/edit#slide=id.p8 Wilhem Rotengen University Of Malakand | Department of Computer Science | Visual Computing Research Group | Dr. Engr.Sami ur Rahman | 2

Computed Tomography (CT Scan) Also known as Computer Assisted Tomography scans (CAT scans) Uses x-ray equipment to produce 3D images by taking a series of pictures from different angles University Of Malakand | Department of Computer Science | Visual Computing Research Group | Dr. Engr.Sami ur Rahman | 3

CT principle University Of Malakand | Department of Computer Science | Visual Computing Research Group | Dr. Engr.Sami ur Rahman | 4 Representation by a grid

X-Rays from first view University Of Malakand | Department of Computer Science | Visual Computing Research Group | Dr. Engr.Sami ur Rahman | X-Rays source X-Rays detector

X-Rays from second view University Of Malakand | Department of Computer Science | Visual Computing Research Group | Dr. Engr.Sami ur Rahman | 6 X-Rays source X-Rays detector

X-Rays from second view University Of Malakand | Department of Computer Science | Visual Computing Research Group | Dr. Engr.Sami ur Rahman | X-Rays source X-Rays detector

Assignment University Of Malakand | Department of Computer Science | Visual Computing Research Group | Dr. Engr.Sami ur Rahman | 8 Explain how different body organs are imaged using CT scan? Hard tissues Bones Soft tissues

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Image Reconstruction  Hints for assignment