Precise and Automatic Patient Positioning in Computed Tomography: Avatar Modeling of the Patient Surface Using a 3-Dimensional Camera

Investigative Radiology
Natalia SaltybaevaHatem Alkadhi

Abstract

The aim of this study was to evaluate the accuracy of a 3-dimensional (3D) camera algorithm for automatic and individualized patient positioning based on body surface detection and to compare the results of the 3D camera with manual positioning performed by technologists in routinely obtained chest and abdomen computed tomography (CT) examinations. This study included data of 120 patients undergoing clinically indicated chest (n = 68) and abdomen (n = 52) CT. Fifty-two of the patients were scanned with CT using a table height manually selected by technologists; 68 patients were automatically positioned with the 3D camera, which is based on patient-specific body surface and contour detection. The ground truth table height (TGT) was defined as the table height that aligns the axial center of the patient's body region in the CT scanner isocenter. Off-centering was defined as the difference between the ground truth table height (TGT) and the actual table position used in all CT examinations. The t test was performed to determine significant differences in the vertical offset between automatic and manual positioning. The χ test was used to check whether there was a relationship between patient size and the magnitude of off-centering...Continue Reading

References

Oct 23, 2004·Radiology·Mannudeep K KalraSanjay Saini
Jan 24, 2007·AJR. American Journal of Roentgenology·Jianhai LiMannudeep K Kalra
Sep 8, 2007·Medical Physics·Thomas TothMichael P Daly
Feb 7, 2009·Radiologic Clinics of North America·Cynthia H McColloughJodie Christner
Jul 12, 2011·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·M A HabibzadehH Zaidi
Nov 24, 2012·Radiology·James A Brink, Richard L Morin
Jan 18, 2014·Physics in Medicine and Biology·Willi A Kalender
Nov 25, 2014·Radiology·William W Mayo-SmithWilliam Pavlicek
Dec 19, 2014·Investigative Radiology·Val M RungeHatem Alkadhi
Apr 4, 2015·Medical Physics·Xiaoyu TianEhsan Samei
Jan 27, 2016·Current Problems in Diagnostic Radiology·Peter D FilevCourtney C Moreno
Jan 31, 2017·Medical Physics·Rebecca M Marsh, Michael S Silosky

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Citations

Aug 10, 2019·Australasian Physical & Engineering Sciences in Medicine·Hiroki KawashimaKosuke Matsubara
Mar 25, 2020·Journal of Thoracic Imaging·Puneet SharmaDorin Comaniciu
Mar 27, 2020·Investigative Radiology·Hatem Alkadhi, André Euler
Sep 2, 2020·Annals of the ICRP·C H McCollough, S Leng
Oct 12, 2018·European Radiology·Ronald BooijMarcel van Straten
Nov 4, 2020·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·Frederik GeisslerMatthias Stefan May
Mar 14, 2021·Nature Reviews. Cardiology·Maxime SermesantNicholas Ayache
Apr 25, 2021·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Shadi EbrahimianMannudeep K Kalra
May 15, 2021·The British Journal of Radiology·Jarrel SeahMeng Law
Jul 24, 2021·Journal of Computer Assisted Tomography·Bari DaneAlec Megibow
Oct 5, 2021·Nuklearmedizin. Nuclear Medicine·Julian Manuel Michael Rogasch, Tobias Penzkofer

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