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Guideline-compliant High Resolution Rectal ProtocolsKirsten Gormly, MBBS, FRANZCR (Jones Radiology, Adelaide, SA, Australia)

MRI for local staging and restaging of rectal cancer is a cornerstone of modern multidisciplinary treatment. High resolution MRI is recommended by global organizations, as the quality of the images has a direct impact on radiologists’ ability to accurately assess the tumor. To ensure clinical consistency, we provide protocols which meet the recommendations from ESGAR (European Society of Gastrointestinal and Abdominal Radiology), SAR (Society of Abdominal Radiology, USA) and Australian organisations [1–3]. These protocols are optimized for varied MAGNETOM systems to deliver the high-contrast, high-resolution detail required for treatment planning.

  • Protocols for high-resolution T2W: 
    Small FOV, thin-slice (3 mm) sequences with base in-plane resolution 0.6 x 0.6 mm. Sagittal and aligned to the tumor axis for optimized assessment of T-stage, Extramural Venous Invasion, Lymph Node and Mesorectal Fascia involvement.
  • Protocols for DWI: 
    High b-value diffusion-weighted imaging (b = 800 s/mm^2) to increase sensitivity for post-treatment response.
  • Large FOV protocols for LM staging: 
    Axial overview of the entire pelvis to identify distant lymphadenopathy.

Download the guideline-compliant .exar1 and PDF protocol packages for your 1.5T or 3T system:

References

1 ESGAR Rectal Imaging Guideline Group. MRI to guide clinical management of rectal cancer: updated consensus recommendations from the European Society of Gastrointestinal and Abdominal Radiology (ESGAR): PART II-Restaging and response evaluation. Eur Radiol. 2026 Jan 29. doi: 10.1007/s00330-025-12275-9. Epub ahead of print. PMID: 41609771. https://pubmed.ncbi.nlm.nih.gov/41609771/

2 SAR
Lee S, Kassam Z, Baheti AD, Hope TA, Chang KJ, Korngold EK, Taggart MW, Horvat N. Rectal cancer lexicon 2023 revised and updated consensus statement from the Society of Abdominal Radiology Colorectal and Anal Cancer Disease-Focused Panel. Abdom Radiol (NY). 2023 Sep;48(9):2792-2806. doi: 10.1007/s00261-023-03893-2. Epub 2023 May 5. PMID: 37145311; PMCID: PMC10444656.  https://pubmed.ncbi.nlm.nih.gov/37145311/

3 Australia
2017 Clinical practice guidelines for the prevention, early detection and management of colorectal cancer
https://app.magicapp.org/#/guideline/noPKwE


Contact

Siemens-healthineers_Magnetomworld_Kirsten-Gormly


Associate Professor Kirsten Gormly, MBBS, FRANZCR
Jones Radiology
226 Greenhill Road
Eastwood SA 5063
Australia
kirsten.gormly@gmail.com