Abstract
Purpose
To propose guidelines based on an expert-panel-derived unified approach to the technical performance, interpretation, and reporting of MRI for baseline and post-treatment staging of rectal carcinoma.
Methods
A consensus-based questionnaire adopted with permission and modified from the European Society of Gastrointestinal and Abdominal Radiologists was sent to a 17-member expert panel from the Rectal Cancer Disease-Focused Panel of the Society of Abdominal Radiology containing 268 question parts. Consensus on an answer was defined as ≥ 70% agreement. Answers not reaching consensus (< 70%) were noted.
Results
Consensus was reached for 87% of items from which recommendations regarding patient preparation, technical performance, pulse sequence acquisition, and criteria for MRI assessment at initial staging and restaging exams and for MRI reporting were constructed.
Conclusion
These expert consensus recommendations can be used as guidelines for primary and post-treatment staging of rectal cancer using MRI.
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Acknowledgements
The authors would like to thank Drs. Doenja Lambregts and Monique Maas for help with the European questionnaire. We would also like to thank several members of the DFP that were not on the expert panel but contributed to the formation of the dictation templates including Drs. Bruce Minsky, Martin Weiser, Raj Paspulati, Dhakshin Ganeshan, Naomi Campbell, and Randy Ernst. Grant Support: National Institutes of Health (R25CA020449).
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Gollub, M.J., Arya, S., Beets-Tan, R.G. et al. Use of magnetic resonance imaging in rectal cancer patients: Society of Abdominal Radiology (SAR) rectal cancer disease-focused panel (DFP) recommendations 2017. Abdom Radiol 43, 2893–2902 (2018). https://doi.org/10.1007/s00261-018-1642-9
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DOI: https://doi.org/10.1007/s00261-018-1642-9