Kevin M Schartz1, Mark T Madsen2, John Kim3, Riko Ohashi4, Kenjirou Ohashi2, George Y El-Khoury2, Robert T Caldwell2, Edmund A Franken2, Kevin S Berbaum2. 1. Department of Radiology, University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa. Electronic address: kevin-schartz@uiowa.edu. 2. Department of Radiology, University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa. 3. Section of Neuroradiology, Brigham and Women's Hospital, Boston, Massachusetts. 4. Northwestern University, Evanston, Illinois.
Abstract
PURPOSE: The satisfaction-of-search (SOS) effect occurs when an abnormality on an image is missed because another is found. The aim of this experiment was to test whether severe distracting fractures control the magnitude of SOS on other fractures when both appear in a single CT image. METHODS: The institutional review board approved this study. The experimental (SOS) condition included 35 cervical spine CT cases, all of which contained severe cervical spine injuries. For each of these cases, a similar case was found that had no injuries. Image modification software was developed to add simulated fractures to each pair of cases, with and without a major injury. Sixteen different minor fractures were added to 16 of the 35 pairs of images. The 35 cases without native injuries constituted a control (non-SOS) condition mixed in a random order. Twenty radiologists read 35 mixed cases in each of two sessions. False-positive evaluations were collected only for cases without simulated fractures. RESULTS: An SOS effect on the detection of simulated fractures was not observed. There was a nonsignificant (P = .07) finding of poorer detection in the presence of cases with severe injuries. However, the magnitude of the effect was no greater than has been observed for less severe distracting injuries. CONCLUSIONS: The outcome agrees with the results of two previous experiments that failed to yield an SOS effect associated with detecting severe injuries, suggesting that the severity of a distracting injury does not determine whether a second injury is discovered.
PURPOSE: The satisfaction-of-search (SOS) effect occurs when an abnormality on an image is missed because another is found. The aim of this experiment was to test whether severe distracting fractures control the magnitude of SOS on other fractures when both appear in a single CT image. METHODS: The institutional review board approved this study. The experimental (SOS) condition included 35 cervical spine CT cases, all of which contained severe cervical spine injuries. For each of these cases, a similar case was found that had no injuries. Image modification software was developed to add simulated fractures to each pair of cases, with and without a major injury. Sixteen different minor fractures were added to 16 of the 35 pairs of images. The 35 cases without native injuries constituted a control (non-SOS) condition mixed in a random order. Twenty radiologists read 35 mixed cases in each of two sessions. False-positive evaluations were collected only for cases without simulated fractures. RESULTS: An SOS effect on the detection of simulated fractures was not observed. There was a nonsignificant (P = .07) finding of poorer detection in the presence of cases with severe injuries. However, the magnitude of the effect was no greater than has been observed for less severe distracting injuries. CONCLUSIONS: The outcome agrees with the results of two previous experiments that failed to yield an SOS effect associated with detecting severe injuries, suggesting that the severity of a distracting injury does not determine whether a second injury is discovered.
Authors: Mark T Madsen; Kevin S Berbaum; Andrew N Ellingson; Brad H Thompson; Brian F Mullan; Robert T Caldwell Journal: Acad Radiol Date: 2006-03 Impact factor: 3.173
Authors: Kevin S Berbaum; Kevin M Schartz; Robert T Caldwell; George Y El-Khoury; Kenjirou Ohashi; Mark Madsen; Edmund A Franken Journal: J Am Coll Radiol Date: 2012-05 Impact factor: 5.532
Authors: Katherine P Andriole; Jeremy M Wolfe; Ramin Khorasani; S Ted Treves; David J Getty; Francine L Jacobson; Michael L Steigner; John J Pan; Arkadiusz Sitek; Steven E Seltzer Journal: Radiology Date: 2011-05 Impact factor: 11.105
Authors: Kevin S Berbaum; George Y El-Khoury; Kenjirou Ohashi; Kevin M Schartz; Robert T Caldwell; Mark Madsen; Edmund A Franken Journal: Acad Radiol Date: 2007-06 Impact factor: 3.173
Authors: Jacob C Mandell; Jeffrey A Rhodes; Nehal Shah; Glenn C Gaviola; Andreas H Gomoll; Stacy E Smith Journal: Skeletal Radiol Date: 2017-07-17 Impact factor: 2.199
Authors: Elizabeth A Krupinski; Kevin M Schartz; Mark S Van Tassell; Mark T Madsen; Robert T Caldwell; Kevin S Berbaum Journal: J Med Imaging (Bellingham) Date: 2017-09-29