Diffusion-Weighted Imaging with Color-Coded Images: Towards a Reduction in Reading Time While Keeping a Similar...

Area of Science:

• Radiology
• Medical Imaging

Background:

• Diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) mapping are crucial in MRI for assessing tissue microstructure.
• Conventional DWI and ADC maps are often presented separately, potentially increasing interpretation time.

Purpose of the Study:

• To develop a single color-coded image integrating DWI and ADC map information.
• To evaluate the diagnostic performance and efficiency of this novel color-coded imaging technique compared to conventional methods.

Main Methods:

• Retrospective analysis of 36 head MRI scans.
• Comparison of conventional DWI/ADC maps with newly developed color-coded images.
• Interobserver agreement assessment using Cohen's kappa and percent agreement.
• Paired-samples t-test to compare reading times.

Main Results:

• Substantial to almost perfect agreement between conventional and color-coded images across all raters.
• Significantly reduced mean reading time for color-coded images (27.9 seconds) compared to conventional DWI (47.4 seconds) for one rater (P = .00007).

Conclusions:

• Color-coded MRI images integrating DWI and ADC information are diagnostically equivalent to conventional DWI.
• This novel approach offers potential for improved reading efficiency and ease of interpretation in MRI diagnostics.