Image size influences visual search and perception of hemorrhages when reading Cranial CT: an eye-tracking study

dc.contributor.authorVenjakob, Antje C.
dc.contributor.authorMarnitz, Tim
dc.contributor.authorPhillips, Peter
dc.contributor.authorMello-Thoms, Claudia R.
dc.date.accessioned2017-10-23T09:31:18Z
dc.date.available2017-10-23T09:31:18Z
dc.date.issued2016
dc.descriptionDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.de
dc.descriptionThis publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.en
dc.description.abstractObjective: The aim of this study was to explore reader gaze, performance, and preference during interpretation of cranial computed tomography (cCT) in stack mode at two different sizes. Background: Digital display of medical images allows for the manipulation of many imaging factors, like image size, by the radiologists, yet it is often not known what display parameters better suit human perception. Method: Twenty-one radiologists provided informed consent to be eye tracked while reading 20 cCT cases. Half of these cases were presented at a size of 14 x 14 cm (512 x 512 pixels), half at 28 x 28 cm (1,024 x 1,024 pixels). Visual search, performance, and preference for the two image sizes were assessed. Results: When reading small images, significantly fewer, but longer, fixations were observed, and these fixations covered significantly more slices. Time to first fixation of true positive findings was faster in small images, but dwell time on true findings was longer. Readers made more false positive decisions in small images, but no overall difference in either jackknife alternative free-response receiver operating characteristic or reading time was found. Conclusion: Overall performance is not affected by image size. However, small-stack-mode cCT images may better support the use of motion perception and acquiring an overview, whereas large-stack-mode cCT images seem better suited for detailed analyses. Application: Subjective and eye-tracking data suggest that image size influences how images are searched and that different search strategies might be beneficial under different circumstances.en
dc.identifier.eissn1547-8181
dc.identifier.issn0018-7208
dc.identifier.pmid26936388
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/6800
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-6184
dc.language.isoen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc300 Sozialwissenschaftende
dc.subject.ddc610 Medizin und Gesundheitde
dc.subject.otherradiology and medical imagingen
dc.subject.othereye movementsen
dc.subject.othertrackingen
dc.subject.othervisual searchen
dc.subject.othercomputer interfaceen
dc.titleImage size influences visual search and perception of hemorrhages when reading Cranial CT: an eye-tracking studyen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1177/0018720816630450
dcterms.bibliographicCitation.issue3
dcterms.bibliographicCitation.journaltitleHuman factors : the journal of the Human Factors Societyen
dcterms.bibliographicCitation.originalpublishernameSage Publicationsde
dcterms.bibliographicCitation.originalpublisherplaceLondon [u.a.]de
dcterms.bibliographicCitation.pageend451
dcterms.bibliographicCitation.pagestart441
dcterms.bibliographicCitation.volume58
tub.accessrights.dnbdomain
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme::Inst. Psychologie und Arbeitswissenschaft::FG Mensch-Maschine-Systemede
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Mensch-Maschine-Systemede
tub.affiliation.instituteInst. Psychologie und Arbeitswissenschaftde
tub.publisher.universityorinstitutionTechnische Universität Berlin

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