alexa Value of endorectal coil versus body coil MRI for diagnosis of recurrent pelvic malignancies.
Genetics

Genetics

Advancements in Genetic Engineering

Author(s): Huch Bni RA, Meyenberger C, Pok Lundquist J, Trinkler F, Ltolf U,

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Abstract BACKGROUND: To compare endorectal coil magnetic resonance imaging (MRI) with body coil MRI in detecting local recurrence of gynecologic tumors and prostate and rectal cancers. METHODS: Forty-six patients with suspected recurrent pelvic malignancies (13 gynecologic, 15 prostatic, and 18 anorectal primaries) were enrolled in the study. Axial T1- and T2-weighted body coil images and T2- and contrast-enhanced T1-weighted axial endorectal coil images were obtained on a 1.5 T system. Results of the MR examinations were compared with histological findings and follow-up examinations with respect to the diagnostic accuracy and diagnostic confidence for assessment or exclusion of local recurrence. RESULTS: Recurrent disease was histologically confirmed in eight patients with primary gynecologic malignancies, seven with suspected prostatic recurrence, and seven with suspected anorectal recurrence. Overall, accuracy of body coil MRI was 67\% for gynecologic tumors, 36\% for prostatic recurrences, and 59\% for rectal recurrences. T2- and contrast-enhanced T1-weighted endorectal sequences yielded similar results, with an accuracy of 73\% for depiction of gynecologic recurrence, 77\% for prostatic recurrence, and 77\% for rectal recurrence. The difference in accuracy between body coil and endorectal coil examinations was statistically significant (p < 0. 05) only for prostatic cancer. Diagnostic confidence was, however, significantly improved (p < 0.05) in all tumors (T2-weighted endorectal coil examination was superior to T2-weighted body coil images in 71\% of cases). CONCLUSION: Although the results of endorectal coil MRI are only slightly superior to those of body coil MRI for the detection of recurrent gynecologic and anorectal tumors, diagnosis can be made with greater diagnostic confidence in many cases. For detection of prostatic recurrence, endorectal MRI is highly recommended.
This article was published in Abdom Imaging and referenced in Advancements in Genetic Engineering

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