An iterative projection-based motion estimation and compensation scheme for head x-ray CT

Purpose: Although current computed tomography (CT) systems can scan the head in a very short time, patient motion sometimes still induces artifacts. If motion occurs, one has to repeat the scan; to avoid motion, sedation or anesthesia is sometimes applied. Methods: The authors propose a method to it...

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Vydané v:	Medical physics (Lancaster) Ročník 43; číslo 10; s. 5705 - 5716
Hlavní autori:	Sun, Tao, Kim, Jung-Ha, Fulton, Roger, Nuyts, Johan
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States American Association of Physicists in Medicine 01.10.2016
Predmet:	Analysis of motion Biological material, e.g. blood, urine; Haemocytometers Computed tomography Computerised tomographs computerised tomography Digital computing or data processing equipment or methods, specially adapted for specific applications General statistical methods Humans Image data processing or generation, in general Image enhancement or restoration, e.g. from bit‐mapped to bit‐mapped creating a similar image Image Processing, Computer-Assisted - methods Image reconstruction image resolution image restoration Image scanners iterative methods iterative reconstruction Kinematics mean square error methods Medical image artifacts medical image processing Medical image reconstruction motion compensation motion estimation Movement Movement sensors phantoms Phantoms, Imaging Reconstruction rigid motion Spatial resolution Tomography, X-Ray Computed computed tomography motion estimation iterative reconstruction rigid motion motion compensation
ISSN:	0094-2405, 2473-4209, 2473-4209
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