Synchronized navigation of current and prior studies using image registration improves radiologist’s efficiency

Abstract

Purpose

The purpose of this study was to investigate how the use of multi-modal rigid image registration integrated within a standard picture archiving and communication system affects the efficiency of a radiologist while performing routine interpretations of cases including prior examinations.

Methods

Six radiologists were recruited to read a set of cases (either 16 neuroradiology or 14 musculoskeletal cases) during two crossover reading sessions. Each radiologist read each case twice, one time with synchronized navigation, which enables spatial synchronization across examinations from different study dates, and one time without. Efficiency was evaluated based upon time to read a case and amount of scrolling while browsing a case using Wilcoxon signed rank test.

Results

Significant improvements in efficiency were found considering either all radiologists simultaneously, the two sections separately and the majority of individual radiologists for time to read and for amount of scrolling. The relative improvement for each individual radiologist ranged from 4 to 32% for time to read and from 14 to 38% for amount of scrolling.

Conclusion

Image registration providing synchronized navigation across examinations from different study dates provides a tool that enables radiologists to work more efficiently while reading cases with one or more prior examinations.

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Acknowledgements

D. Forsberg is supported by a Grant (2014-01422) from the Swedish Innovation Agency (VINNOVA).

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Correspondence to Daniel Forsberg.

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Conflict of interest

D. Forsberg reports grants from VINNOVA and employment at Sectra (a PACS vendor), during the conduct of the study. The other authors declare that they have no conflict of interest.

Ethical approval

No procedures involving human participants were performed as the study was a retrospective study. For this type of study formal consent is not required.

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Forsberg, D., Gupta, A., Mills, C. et al. Synchronized navigation of current and prior studies using image registration improves radiologist’s efficiency. Int J CARS 12, 431–438 (2017). https://doi.org/10.1007/s11548-016-1506-0

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Keywords

  • Efficiency
  • Image registration
  • Synchronized navigation
  • PACS