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10.3390/s150922811 http://scihub22266oqcxt.onion/10.3390/s150922811 C4610559!4610559!26371008     free     free     free Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Sensors+(Basel) 2015 ; 15 (9): 22811-25 Nephropedia Template TP {{tp|p=26371008|t=2015. Geometric Parameters Estimation and Calibration in Cone-Beam Micro-CT |pdf=|usr=}}{{26371008}} gab.com Text Geometric Parameters Estimation and Calibration in Cone-Beam Micro-CT JO: Sensors (Basel) http://www.kidney.de/pget.php?&tw=1&pmid=26371008 #FOAvip The quality of Computed Tomography (CT) images crucially depends on the precise knowledge of the scanner geometry. Therefore, it is necessary to estimate and calibrate the misalignments before image acquisition. In this paper, a Two-Piece-Ball (TPB) phantom is used to estimate a set of parameters that describe the geometry of a cone-beam CT system. Only multiple projections of the TPB phantom at one position are required, which can avoid the rotation errors when acquiring multi-angle projections. Also, a corresponding algorithm is derived. The performance of the method is evaluated through simulation and experimental data. The results demonstrated that the proposed method is valid and easy to implement. Furthermore, the experimental results from the Micro-CT system demonstrate the ability to reduce artifacts and improve image quality through geometric parameter calibration. Twit Text FOAVip Geometric Parameters Estimation and Calibration in Cone-Beam Micro-CT ????Sensors (Basel) http://www.kidney.de/pget.php?&tw=1&pmid=26371008 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26371008 #FOAvip English Wikipedia <ref>{{Cite pmid|26371008}}</ref> Geometric Parameters Estimation and Calibration in Cone-Beam Micro-CT #MMPMID26371008 Zhao J; Hu X; Zou J; Hu X Sensors (Basel) 2015[Sep]; 15 (9): 22811-25 PMID26371008show ga The quality of Computed Tomography (CT) images crucially depends on the precise knowledge of the scanner geometry. Therefore, it is necessary to estimate and calibrate the misalignments before image acquisition. In this paper, a Two-Piece-Ball (TPB) phantom is used to estimate a set of parameters that describe the geometry of a cone-beam CT system. Only multiple projections of the TPB phantom at one position are required, which can avoid the rotation errors when acquiring multi-angle projections. Also, a corresponding algorithm is derived. The performance of the method is evaluated through simulation and experimental data. The results demonstrated that the proposed method is valid and easy to implement. Furthermore, the experimental results from the Micro-CT system demonstrate the ability to reduce artifacts and improve image quality through geometric parameter calibration. äGeometric Parameters Estimation and Calibration in Cone-Beam Micro-CT (epmc).pdf DeepDyve Pubget Overpricing