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Endorectal coil magnetic resonance imaging or endorectal coil MRI is a type of medical imaging in which MRI is used in conjunction with a coil placed into the rectum in order to obtain high quality images of the area surrounding the rectum. The technique has demonstrated higher accuracy than other modalities in assessing seminal vesicle invasion and extra-capsular extension (ECE) of prostate cancer (96% and 81% respectively). Endorectal coil MRI is useful for determining the extent of spread and local invasion of cancers of the prostate, rectum, and anus. The coil consists of a probe with an inflatable balloon which helps maintain appropriate positioning. Similar coils may be used vaginally for evaluating cervical cancer.

References

1. Hricak H, White S, Vigneron D, Kurhanewicz J, Kosco A, Levin D, Weiss J, Narayan P, Carroll PR (1994). "Carcinoma of the prostate gland: MR imaging with pelvic phased-array coils versus integrated endorectal-pelvic phased-array coils". Radiology. 193 (3): 703–709. doi:10.1148/radiology.193.3.7972810. PMID 7972810.
2. Casciani E, Polettini E, Bertini L, Emiliozzi P, Amini M, Pansadoro V, Gualdi GF (2004). "Prostate cancer: evaluation with endorectal MR imaging and three-dimensional proton MR spectroscopic imaging". Radiol Med (Torino). 108 (5–6): 530–541. PMID 15722999.

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