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Standardizing diffusion-weighted MRI acquisition and analysis is crucial for comparing apparent diffusion coefficient (ADC) values across institutions. This harmonization is essential for validating ADC as a reliable biomarker in multicenter oncology trials.

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Area of Science:

  • Medical Imaging
  • Oncology
  • Biomarker Development

Background:

  • Diffusion-weighted MRI (DW-MRI) is valuable for tumor detection, staging, and response assessment in body imaging.
  • Quantitative evaluation of apparent diffusion coefficient (ADC) is necessary for prognosis and treatment response monitoring.
  • Current variability in DW-MRI acquisition and analysis methods hinders multicenter trial implementation and ADC biomarker utility.

Purpose of the Study:

  • To review factors contributing to ADC variability in diffusion-weighted MRI.
  • To discuss hardware, software, and quality control measures for standardized protocols.
  • To outline data handling and procedural considerations for multicenter trials.

Main Methods:

  • Review of technical and biological performance factors affecting ADC values.
  • Discussion of multi-vendor platform standardization challenges.
  • Consideration of data collection, archiving, analysis, and quality assurance processes.

Main Results:

  • Variability in acquisition and analysis methodologies prevents comparability of ADC values across centers.
  • Standardized protocols are needed to address hardware and software considerations for multi-vendor platforms.
  • Implementing quality assurance and control is vital for reproducible results.

Conclusions:

  • Standardized acquisition and analysis enable quantification of imaging biomarkers in multicenter trials.
  • Establishing measurement precision within a multicenter context is essential for biomarker validation.
  • A traceable data repository promotes further research and development of ADC as a biomarker.