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'''MRI (first choice)'''
* Mandatory for both primary staging and restaging of rectal cancer.
Templated
This article is a practical summary of the ''Updated recommendations from the 2016 European Society of Gastrointestinal and Abdominal Radiology (ESGAR) to Magnetic resonance imaging for clinical management of rectal cancer''.
== MR image acquisition Planning=={{Rectal cancer - choice of modality}}
=== Hardware ===
* Requires an external surface coil
* 1.5T or 3.0T '''Endorectal ultrasound (EUS)''' * Staging for early tumours considered for local excision* Superior diagnostic performance for differentiating T1 from T2 tumors.
=== Patient preparation ===
