Special Section on Medical Image Perception and Observer Performance

Image toggling saves time in mammography

[+] Author Affiliations
Trafton Drew

University of Utah, Department of Psychology, Salt Lake City, Utah 84122, United States

Avi M. Aizenman

Brigham and Women’s Hospital, Department of Surgery, Cambridge, Massachusetts 02139, United States

Matthew B. Thompson

Brigham and Women’s Hospital, Department of Surgery, Cambridge, Massachusetts 02139, United States

The University of Queensland, School of Psychology, Brisbane, Queensland 4072, Australia

Mark D. Kovacs

Medical University of South Carolina, Department of Radiology, Charleston, South Carolina 29425, United States

Michael Trambert

Cottage Health System, Department of Radiology, Santa Barbara, California 93110, United States

The Sansum Clinic, Department of Radiology, Santa Barbara, California 93110, United States

Merge Healthcare, San Diego, California 92121, United States

Murray A. Reicher

Merge Healthcare, San Diego, California 92121, United States

Jeremy M. Wolfe

Brigham and Women’s Hospital, Department of Surgery, Cambridge, Massachusetts 02139, United States

Harvard Medical School, Department of Surgery, Cambridge, Massachusetts 02139, United States

J. Med. Imag. 3(1), 011003 (Oct 12, 2015). doi:10.1117/1.JMI.3.1.011003
History: Received July 8, 2015; Accepted September 9, 2015
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Abstract.  When two images are perfectly aligned, even subtle differences are readily detected when the images are “toggled” back and forth in the same location. However, substantial changes between two photographs can be missed if the images are misaligned (“change blindness”). Nevertheless, recent work from our lab, testing nonradiologists, suggests that toggling misaligned photographs leads to superior performance compared to side-by-side viewing (SBS). In order to determine if a benefit of toggling misaligned images may be observed in clinical mammography, we developed an image toggling technique where pairs of new and prior breast imaging exam images could be efficiently toggled back and forth. Twenty-three radiologists read 10 mammograms evenly divided in toggle and SBS modes. The toggle mode led to a 6-s benefit in reaching a decision [t(22)=5.11, p<.05]. The toggle viewing mode also led to a 5% improvement in diagnostic accuracy, though in our small sample this effect was not statistically reliable. Time savings were found even though successive mammograms were not perfectly aligned. Given the ever-increasing caseload for radiologists, this simple manipulation of how the images are viewed could save valuable time in clinical practice, allowing radiologists to read more cases or spend more time on difficult cases.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Topics

Mammography

Citation

Trafton Drew ; Avi M. Aizenman ; Matthew B. Thompson ; Mark D. Kovacs ; Michael Trambert, et al.
"Image toggling saves time in mammography", J. Med. Imag. 3(1), 011003 (Oct 12, 2015). ; http://dx.doi.org/10.1117/1.JMI.3.1.011003


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