
Proceedings Paper
Searching in axial and 3D CT visualisationsFormat | Member Price | Non-Member Price |
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Paper Abstract
Traditional diagnostic modalities have been, for the most part, static two-dimensional images displayed on film
or computer screen. More recent diagnostic modalities are solely computer-based and consist of large data-sets
of multiple images. Image perception and visual search using these new modalities are complicated by the need
to interact with the computer in order to navigate through the data. This paper reports the late-breaking results
from two small studies into visual search within two types of CT Colonography (CTC) visualisations. The twelve
novice observers in the study were taking part in a week-long course in CTC and were tested at the beginning
and end of the course. A number of expert observers were also recorded. The two visualisations used in the
study were 2D axial view and 3D colon fly-through. In both cases, searching was performed by inspecting the
colon wall, but by two distinct mechanisms. The first study recorded observer eye-gaze and image navigation in
a CTC axial view. The search strategy was to follow the lumen of the colon and detect abnormalities in the colon
wall. The observer used the physical computer interface to navigate through the set of axial images to perform
this task. The 3D fly-through study recorded observer eye-gaze whilst watching a recording of a computed flight
through the colon lumen. Unlike the axial view there was no computer control, so inspection of the colon surface
was dictated by the speed of flight through the colon.
Paper Details
Date Published: 6 March 2008
PDF: 8 pages
Proc. SPIE 6917, Medical Imaging 2008: Image Perception, Observer Performance, and Technology Assessment, 69171J (6 March 2008); doi: 10.1117/12.790424
Published in SPIE Proceedings Vol. 6917:
Medical Imaging 2008: Image Perception, Observer Performance, and Technology Assessment
Berkman Sahiner; David J. Manning, Editor(s)
PDF: 8 pages
Proc. SPIE 6917, Medical Imaging 2008: Image Perception, Observer Performance, and Technology Assessment, 69171J (6 March 2008); doi: 10.1117/12.790424
Show Author Affiliations
Peter Phillips, Univ. of Cumbria (United Kingdom)
David Manning, Univ. of Cumbria (United Kingdom)
Trevor Crawford, Lancaster Univ. (United Kingdom)
David Manning, Univ. of Cumbria (United Kingdom)
Trevor Crawford, Lancaster Univ. (United Kingdom)
David Burling, St. Mark's Hospital (United Kingdom)
Chi-Leung Tam, Lancaster Royal Infirmary (United Kingdom)
Alasdair Taylor, Lancaster Royal Infirmary (United Kingdom)
Chi-Leung Tam, Lancaster Royal Infirmary (United Kingdom)
Alasdair Taylor, Lancaster Royal Infirmary (United Kingdom)
Published in SPIE Proceedings Vol. 6917:
Medical Imaging 2008: Image Perception, Observer Performance, and Technology Assessment
Berkman Sahiner; David J. Manning, Editor(s)
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