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pro vyhledávání: '"James P. Helferty"'
Publikováno v:
International Journal of Computer Assisted Radiology and Surgery. 3:315-329
Three-dimensional (3D) computed-tomography (CT) images and bronchoscopy are commonly used tools for the assessment of lung cancer. Before bronchoscopy, the physician first examines a 3D CT chest image to select pertinent diagnostic sites and to ascer
Publikováno v:
Computerized Medical Imaging and Graphics. 32:159-173
Bronchoscopic biopsy of the central-chest lymph nodes is an important step for lung-cancer staging. Before bronchoscopy, the physician first visually assesses a patient's three-dimensional (3D) computed tomography (CT) chest scan to identify suspect
Publikováno v:
IEEE Transactions on Medical Imaging. 23:1365-1379
Multidetector computed-tomography (MDCT) scanners provide large high-resolution three-dimensional (3-D) images of the chest. MDCT scanning, when used in tandem with bronchoscopy, provides a state-of-the-art approach for lung-cancer assessment. We hav
Publikováno v:
Computer vision and image understanding : CVIU. 108(1-2)
The standard procedure for diagnosing lung cancer involves two stages: three-dimensional (3D) computed-tomography (CT) image assessment, followed by interventional bronchoscopy. In general, the physician has no link between the 3D CT image assessment
Publikováno v:
CVPR Workshops
Autor:
William E. Higgins, James P. Helferty
Publikováno v:
ICIP (2)
Bronchoscopic needle biopsy is a common step for early lung-cancer detection. This procedure uses two steps: (1) 3D computed-tomography (CT) chest image analysis, to choose a biopsy site; (2) live bronchoscopy, to perform the biopsy. CT-based virtual
Publikováno v:
SPIE Proceedings.
Lung cancer assessment involves an initial evaluation of 3D CT image data followed by interventional bronchoscopy. The physician, with only a mental image inferred from the 3D CT data, must guide the bronchoscope through the bronchial tree to sites o
Autor:
Atilla Peter Kiraly, Anthony J. Sherbondy, Janice Z. Turlington, Eric A. Hoffman, William E. Higgins, James P. Helferty, G. McLennan
Publikováno v:
ICIP (2)
A system for virtual-endoscopic 3D medical image assessment and follow-on live endoscopy is described. The development and results focus on 3D CT images of the chest and lung-cancer assessment. Two stages are involved in the assessment. In Stage-1, t
Autor:
James P. Helferty, William E. Higgins
Publikováno v:
ICIP (2)
We present a multi-modal image registration technique that matches virtual surface renderings, derived from 3D medical data, to corresponding endoscopic video. Our efforts focus on the chest. The views of the two image sources arise from inside the m
Publikováno v:
IEEE transactions on medical imaging. 20(7)
Modern video based endoscopes offer physicians a wide-angle field of view (FOV) for minimally invasive procedures, Unfortunately, inherent barrel distortion prevents accurate perception of range. This makes measurement and distance judgment difficult