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Author: search.filters.author.Pintavirooj, ChuchartSubject: search.filters.subject.Image Reconstruction

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    Embedded Photographic Tomography Using Raspberry Pi
    (2022-01-01)
    Janthraprasert, Rujipas
    ;
    Pintavirooj, Chuchart
    A computerized tomography scan (CT scan) is a device that uses X-ray machines and computers that will compute the data gathered from patients to create cross-sectional images. A CT scan can be used to view the inside without cutting the body open, such as blood vessels and different organs. However, most CT scan is mainly located at the hospital because it is very expensive and must be supervised at all times. So, it is hard for students to learn and understand the mechanic behind the actual CT scan. In this paper, we will build a simulated CT that can be used for educational purposes by creating an embedded photographic tomography using raspberry pi. The proposed system is capable of successfully creating a 3D model of the test object.
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    Simulated CT scanner for educational purpose
    (2017-02-21)
    Juhong, Aniwat
    ;
    Pintavirooj, Chuchart
    Computed Tomography is a technique to reconstruct an image of trans-Axial slab of the object from a series of x-ray radiographs taken at a prior-known angle. Sequences of x-ray radiographs are served as two-dimensional projection data for a 3D tomography. The most popular Feldkamp Algorithm which is based on Filtered Backprojection (FBP) approaches has shown to perform well for 3D reconstruction. Conventional x-ray computed tomography was implemented on a c-Arm x-ray apparatus where the x-ray tube and detector is capable of rotating to capture radiograph at any specific angle. In this paper, we designed the simulated computed tomography that can be used for educational purpose. A number of digital cameras are attached on the rotating gantry to capture a series of image around the object. This mimics a conebeam projection for computed tomography. In order to design the embedded system, Raspberry Pi is used as the main microcontroller which acts as data acquisition system. All projection data are sent to cloud server which is later download to PC for further processing.