Related Experiment Video
Updated: Aug 10, 2026
Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure
Published on: July 30, 2009
Diffusion-weighted MR imaging: pediatric clinical applications
1Division of Pediatric Radiology, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA. psagar@partners.org
Insights
Diffusion-weighed imaging (DWI) with apparent diffusion coefficient (ADC) maps aids in diagnosing cerebral disorders. While DWI offers valuable insights, understanding ADC mechanisms is crucial for accurate prognostication in clinical diagnosis.
Area of Science:
- Neuroradiology
- Medical Imaging
- Neuroscience
Background:
- Diffusion-weighed imaging (DWI) is an advanced MRI technique.
- Apparent diffusion coefficient (ADC) maps provide quantitative diffusion data.
- Cerebral disorders present diverse imaging characteristics.
Purpose of the Study:
- To summarize DWI findings across various cerebral disorders.
- To highlight the added value of ADC maps in conjunction with standard MRI sequences.
- To discuss the interpretation of DWI/ADC in clinical practice.
Main Methods:
- Review of existing literature on DWI and ADC in cerebral pathologies.
- Analysis of DWI and ADC map findings in different neurological conditions.
- Correlation of imaging findings with clinical scenarios.
Main Results:
- DWI and ADC maps offer supplementary diagnostic information beyond conventional MRI.
- Abnormal ADC values are observed in various cerebral disorders.
- The pathophysiological basis for ADC changes in disease requires further elucidation.
Conclusions:
- DWI, complemented by ADC maps, is a valuable adjunct in diagnosing cerebral disorders.
- Caution is advised in prognostication due to incomplete understanding of ADC mechanisms.
- Future advancements in diffusion imaging (e.g., DTI, DSI) will enhance clinical diagnostic capabilities.
Abstract:
We have summarized the diffusion-weighed imaging (DWI) findings in a number of different cerebral disorders. In many cases, DWI with the accompanying apparent diffusion coefficient (ADC) map provides additional useful information to the standard imaging sequences. Pathophysiologic mechanisms resulting in baseline normal ADC values and changes with disease processes are not well understood; therefore, caution should be used when prognosticating the outcome of regions with abnormal ADCs. DWI should be used as an adjunct to routine imaging and interpreted in the context of the routine imaging findings and clinical scenario. As our understanding of ADC mechanisms increases and we begin to incorporate information about tissue organization from diffusion tensor imaging or diffusion spectrum imaging, the role of these methods in clinical diagnosis should continue to increase.
