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Proceedings Paper

Sequential reading effects in Dutch screening mammography
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Paper Abstract

Radiologists reading screening mammograms often do this in batches of images read sequentially. This work investigates ways that readers change over the course of a batch. We evaluate sequential reading effects in terms of suspicion scores and reading times from an ongoing study in the Netherlands.

A set of 3510 screening cases read as part of a national screening program by 10 qualified radiologist readers forms the basis for our study. The readers give a suspicion score (on a standalone device) in addition to their standard screening report. The score is time-stamped so that reading order and batch grouping can be assessed. Batches are defined as groups of cases with less than 10 minutes (600 s) between sequential readings. We use Kendall’s Tau, weighted by batch size, as a measure of association between batch position, and suspicion score or reading time. Randomization is used to get confidence intervals on the null hypothesis ( τ=0 ).

We find significant associations between batch position and both of the variables under investigation (suspicion scores and reading time). The associations are negative, suggesting that both suspicion and reading time are reduced at later points in a batch. These results are consistent with the hypothesis that readers are becoming visually adapted to the properties of the images as they progress through a batch of cases, affecting their perception and decisions about the images.

Paper Details

Date Published: 16 March 2020
PDF: 5 pages
Proc. SPIE 11316, Medical Imaging 2020: Image Perception, Observer Performance, and Technology Assessment, 113160G (16 March 2020); doi: 10.1117/12.2549320
Show Author Affiliations
Craig K. Abbey, Univ. of California, Santa Barbara (United States)
Michael A. Webster, Univ. of Nevada, Reno (United States)
Tanya Geertse, Dutch Expert Ctr. for Screening (LRCB) (Netherlands)
Danielle van der Waal, Dutch Expert Ctr. for Screening (LRCB) (Netherlands)
Eric Tetteroo, Dutch Expert Ctr. for Screening (LRCB) (Netherlands)
Amphia Hospital (Netherlands)
Ruud Pijnappel, Dutch Expert Ctr. for Screening (LRCB) (Netherlands)
Univ. Medical Ctr. Utrecht (Netherlands)
Mireille J. M. Broeders, Dutch Expert Ctr. for Screening (LRCB) (Netherlands)
Radboud Univ. Nijmegen (Netherlands)
Ioannis Sechopoulos, Dutch Expert Ctr. for Screening (LRCB) (Netherlands)
Radboud Univ. Medical Ctr. (Netherlands)

Published in SPIE Proceedings Vol. 11316:
Medical Imaging 2020: Image Perception, Observer Performance, and Technology Assessment
Frank W. Samuelson; Sian Taylor-Phillips, Editor(s)

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