Dosimetric comparison of MRI-guided and CT-guided intracavitary and interstitial brachytherapy for locally advanced cervical cancer.

Front Oncol · 2026 · PMC12995612 · PMID 41858348

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a decreasing trendno p-value reported

The D 2cc values demonstrated a decreasing trend under MRI guidance, although this reduction did not reach statistical significance.

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did not reach statistical significanceno p-value reported

While the IR-CTV D 90 was also higher with MRI guidance, this difference did not reach statistical significance. 3.2 Comparison of OAR doses between the two methods At a prescribed dose of 6 Gy per fraction, the rectal D 2cc was 3.92 ± 0.12 Gy under CT guidance compared to 3.01 ± 1.22 Gy under MRI guidance, with the difference being statistically significant.

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