OBJECTIVE: To establish a cone beam computed tomography (ECBCT) system for high-resolution imaging of the extremities. METHODS: Based on three-dimensional X-Ray CT imaging and high-resolution flat plate detector technique, we constructed a physical model and a geometric model for ECBCT imaging, optimized the geometric calibration and image reconstruction methods, and established the scanner system. In the experiments, the pencil vase phantom, image quality (IQ) phantom and a swine feet were scanned using this imaging system to evaluate its effectiveness and stability. RESULTS: On the reconstructed image of the pencil vase phantom, the edges were well preserved with geometric calibrated parameters and no aliasing artifacts were observed. The reconstructed images of the IQ phantom showed a uniform distribution of the CT number, and the noise power spectra were stable in multiple scanning under the same condition. The reconstructed images of the swine feet had clearly displayed the bones with a good resolution. CONCLUSIONS: The ECBCT system can be used for highresolution imaging of the extremities to provide important imaging information to assist in the diagnosis of bone diseases.
OBJECTIVE: To establish a cone beam computed tomography (ECBCT) system for high-resolution imaging of the extremities. METHODS: Based on three-dimensional X-Ray CT imaging and high-resolution flat plate detector technique, we constructed a physical model and a geometric model for ECBCT imaging, optimized the geometric calibration and image reconstruction methods, and established the scanner system. In the experiments, the pencil vase phantom, image quality (IQ) phantom and a swine feet were scanned using this imaging system to evaluate its effectiveness and stability. RESULTS: On the reconstructed image of the pencil vase phantom, the edges were well preserved with geometric calibrated parameters and no aliasing artifacts were observed. The reconstructed images of the IQ phantom showed a uniform distribution of the CT number, and the noise power spectra were stable in multiple scanning under the same condition. The reconstructed images of the swine feet had clearly displayed the bones with a good resolution. CONCLUSIONS: The ECBCT system can be used for highresolution imaging of the extremities to provide important imaging information to assist in the diagnosis of bone diseases.
Authors: Thomas M Link; Volker Vieth; Christoph Stehling; Albrecht Lotter; Ambros Beer; David Newitt; Sharmila Majumdar Journal: Eur Radiol Date: 2002-09-27 Impact factor: 5.315
Authors: Rajiv Gupta; Arnold C Cheung; Soenke H Bartling; Jennifer Lisauskas; Michael Grasruck; Christianne Leidecker; Bernhard Schmidt; Thomas Flohr; Thomas J Brady Journal: Radiographics Date: 2008 Nov-Dec Impact factor: 5.333
Authors: S Demehri; A Muhit; W Zbijewski; J W Stayman; J Yorkston; N Packard; R Senn; D Yang; D Foos; G K Thawait; L M Fayad; A Chhabra; J A Carrino; J H Siewerdsen Journal: Eur Radiol Date: 2015-01-20 Impact factor: 5.315
Authors: John A Carrino; Abdullah Al Muhit; Wojciech Zbijewski; Gaurav K Thawait; J Webster Stayman; Nathan Packard; Robert Senn; Dong Yang; David H Foos; John Yorkston; Jeffrey H Siewerdsen Journal: Radiology Date: 2013-11-18 Impact factor: 11.105