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

Area of Science:

• Radiology
• Medical Imaging
• Health Informatics

Background:

• Radiologists interpret complex cases using prior examinations.
• Efficient review of historical imaging data is crucial for accurate diagnosis.
• Current Picture Archiving and Communication Systems (PACS) may not fully optimize multi-modal image comparison.

Purpose of the Study:

• To evaluate the impact of multi-modal rigid image registration on radiologist efficiency.
• To assess if integrated image registration within PACS improves routine case interpretation.
• To quantify changes in reading time and scrolling during case review with prior examinations.

Main Methods:

• Six radiologists participated in a crossover study.
• Cases were read twice: once with and once without synchronized navigation (image registration).
• Efficiency metrics included time to read and scrolling amount; statistical analysis used the Wilcoxon signed rank test.

Main Results:

• Significant efficiency improvements were observed for both reading time and scrolling.
• Individual radiologist efficiency gains ranged from 4-32% for reading time and 14-38% for scrolling.
• These improvements were consistent across radiologists and case types (neuroradiology, musculoskeletal).

Conclusions:

• Image registration with synchronized navigation enhances radiologist efficiency.
• This technology streamlines the review of cases with prior examinations.
• Integrated image registration is a valuable tool for improving radiologist workflow in PACS.