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Software Design for Micro-CT System Based on Flat-panel Detector

Author: SunXiaoMin
Tutor: LuoQingMing
School: Huazhong University of Science and Technology
Course: Biomedical Engineering
Keywords: Micro CT Software design Object-oriented Multi-threaded Tomography reconstruction
CLC: TP391.41
Type: Master's thesis
Year: 2008
Downloads: 59
Quote: 1
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Abstract


In the field of molecular imaging , micro- CT technology as a novel CT imaging technology, with high spatial resolution with no damage and can be detected in the body , etc., in small animal imaging and other small volume sample has a unique advantage, application prospects, while the arm flat panel detector based micro- CT system compared to the more traditional micro- CT imaging area with a large , free from constraints of sample forms and other advantages . Content of this study is based on independent research and development laboratory of the arm flat panel detector CT systems supporting the development of micro- system software , the realization of small animals such as small sample volumes fast X-ray tomography and reconstruction . Firstly, according to the system 's hardware structure characteristics and post data processing requirements , software requirements put forward , according to the software requirements, design the system software architecture , code and implement the required functionality of the system . Software using object-oriented design and implementation approach to Visual C 6.0 for the development platform. The entire software consists of four modules : pre-processing module , data acquisition module , CT reconstruction module and image processing module . Preprocessing module implements the connection of the detector calibration work. Data acquisition module implements the entire micro- CT system stepper motor, light switches and panel detectors joint control ; wherein the stepper motor control using VC-based serial communication programming, light some way to achieve control using parallel communication , partly through the detector probe library functions provided for secondary development , implementation of the X-ray projection data collected under the scope of 360 , and completed two multi -threaded acquisition mode. CT reconstruction module using cone beam current mainstream algorithms - FDK algorithm, which can solve the small cone angle effect on the reconstruction of the affected ; image processing module implements the reconstruction of tomographic images for basic image processing, image by adjusting size and contrast can be convenient part of the region of interest and more detail information . The software has a good interactive interface , easy operation. The software used in the experiment , the realization of a ~ 10 / s adjustable speed automatic collection, the collection of images for tomographic reconstruction and image post-processing , the results show that the software to achieve the desired design requirements.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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