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The Radiologist's Gaze: Mapping Three-Dimensional Visual Search in Computed Tomography of the Abdomen and Pelvis.

MedStar author(s):

Citation: Journal of Digital Imaging. 32(2):234-240, 2019 04.PMID: 30291478Institution: MedStar Institute for Innovation | MedStar Washington Hospital CenterDepartment: National Center for Human Factors in Healthcare | RadiologyForm of publication: Journal ArticleMedline article type(s): Journal ArticleSubject headings: *Abdomen/dg [Diagnostic Imaging] | *Diagnostic Errors/sn [Statistics & Numerical Data] | *Eye Movements/ph [Physiology] | *Pattern Recognition, Visual/ph [Physiology] | *Pelvis/dg [Diagnostic Imaging] | *Radiologists | *Tomography, X-Ray Computed | Clinical Competence | Data Display | Fixation, Ocular/ph [Physiology] | Humans | Task Performance and Analysis | User-Computer InterfaceYear: 2019 ISSN:

0897-1889

Name of journal: Journal of digital imagingAbstract: A radiologist's search pattern can directly influence patient management. A missed finding is a missed opportunity for intervention. Multiple studies have attempted to describe and quantify search patterns but have mainly focused on chest radiographs and chest CTs. Here, we describe and quantify the visual search patterns of 17 radiologists as they scroll through 6 CTs of the abdomen and pelvis. Search pattern tracings varied among individuals and remained relatively consistent per individual between cases. Attendings and trainees had similar eye metric statistics with respect to time to first fixation (TTFF), number of fixations in the region of interest (ROI), fixation duration in ROI, mean saccadic amplitude, or total number of fixations. Attendings had fewer numbers of fixations per second versus trainees (p < 0.001), suggesting efficiency due to expertise. In those cases that were accurately interpreted, TTFF was shorter (p = 0.04), the number of fixations per second and number of fixations in ROI were higher (p = 0.04, p = 0.02, respectively), and fixation duration in ROI was increased (p = 0.02). We subsequently categorized radiologists as "scanners" or "drillers" by both qualitative and quantitative methods and found no differences in accuracy with most radiologists being categorized as "drillers." This study describes visual search patterns of radiologists in interpretation of CTs of the abdomen and pelvis to better approach future endeavors in determining the effects of manipulations such as fatigue, interruptions, and computer-aided detection.All authors: Blumenthal J, Filice RW, Fong A, Kandaswamy S, Kelahan LC, Ratwani RMOriginally published: Journal of Digital Imaging. 2018 Oct 05Fiscal year: FY2019Digital Object Identifier:

https://dx.doi.org/10.1007/s10278-018-0121-8

ORCID:

http://orcid.org/0000-0003-2142-6003

Date added to catalog: 2018-10-10

Holdings ( 1 )
Title notes ( 2 )

Holdings
Item type	Current library	Collection	Call number	Status	Date due	Barcode
Journal Article	MedStar Authors Catalog	Article	30291478	Available		30291478

A radiologist's search pattern can directly influence patient management. A missed finding is a missed opportunity for intervention. Multiple studies have attempted to describe and quantify search patterns but have mainly focused on chest radiographs and chest CTs. Here, we describe and quantify the visual search patterns of 17 radiologists as they scroll through 6 CTs of the abdomen and pelvis. Search pattern tracings varied among individuals and remained relatively consistent per individual between cases. Attendings and trainees had similar eye metric statistics with respect to time to first fixation (TTFF), number of fixations in the region of interest (ROI), fixation duration in ROI, mean saccadic amplitude, or total number of fixations. Attendings had fewer numbers of fixations per second versus trainees (p < 0.001), suggesting efficiency due to expertise. In those cases that were accurately interpreted, TTFF was shorter (p = 0.04), the number of fixations per second and number of fixations in ROI were higher (p = 0.04, p = 0.02, respectively), and fixation duration in ROI was increased (p = 0.02). We subsequently categorized radiologists as "scanners" or "drillers" by both qualitative and quantitative methods and found no differences in accuracy with most radiologists being categorized as "drillers." This study describes visual search patterns of radiologists in interpretation of CTs of the abdomen and pelvis to better approach future endeavors in determining the effects of manipulations such as fatigue, interruptions, and computer-aided detection.

English