Related Experiment Video
Updated: Jun 24, 2025
10:25
Author Spotlight: Integrating High-Resolution Intravital Imaging and MRI to Enhance Stereotactic Body Radiation Therapy Planning
Published on: April 12, 2024
1.3K
Apparent Diffusion Coefficient (ADC) Differentiates Retinoblastoma from Coats Disease on MRI
Wendy X Zhang1, Joshua S Shimony2, Gregg T Lueder3
1University of Missouri School of Medicine (W.X.Z.), Columbia, Missouri, USA; Department of Ophthalmology and Visual Sciences, Washington University School of Medicine (W.X.Z., G.T.L., M.M.R.), St. Louis, Missouri, USA.
American Journal of Ophthalmology
|June 12, 2024
Summary
Apparent diffusion coefficient (ADC) measured by MRI can help differentiate retinoblastoma from Coats' disease in children. Higher ADC values were observed in Coats' disease, aiding diagnosis.
Area of Science:
- Ophthalmology
- Radiology
- Pediatric Oncology
Background:
- Coats' disease and retinoblastoma are challenging to distinguish in children.
- Previous MRI studies focused on features like eye size and retinal detachment, but lacked data on apparent diffusion coefficient (ADC).
Purpose of the Study:
- To evaluate the utility of ADC values derived from MRI in differentiating between Coats' disease and retinoblastoma in pediatric patients.
- To investigate if ADC can serve as an objective parameter to aid in diagnosis.
Main Methods:
- Retrospective cross-sectional study of children under 18 diagnosed with Coats' disease or retinoblastoma between 2018-2022.
- MRI scans of 5 eyes with Coats' disease and 29 eyes with retinoblastoma were analyzed.
- Average ADC values of intraocular lesions were measured using the eyedropper tool and compared between groups using a t-test.
Main Results:
- Mean ADC for retinoblastoma was 442 mm²/s, significantly lower than Coats' disease at 1364 mm²/s (P < .001).
- An ADC threshold of 900 mm²/s demonstrated high accuracy in distinguishing between the two conditions within the dataset.
- Internal reliability of ADC measurements was confirmed.
Conclusions:
- ADC derived from diffusion-weighted MRI offers a potential objective method for diagnosing retinoblastoma and Coats' disease.
- This quantitative MRI parameter can assist clinicians in confirming or establishing diagnoses when clinical features are ambiguous.
- Further validation across different MRI scanners and sequences may be needed for broader clinical application.
