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Radiologia Brasileira

On-line version ISSN 1678-7099


JUSTINO, Pitágoras Baskara et al. Value of magnetic resonance imaging in the radiotherapy planning of tumours of the uterine cervix: preliminary results. Radiol Bras [online]. 2005, vol.38, n.6, pp.399-402. ISSN 1678-7099.

OBJECTIVE: To assess the rate of geographic miss on conventional radiotherapy planning of patients with cervical cancer, using magnetic resonance imaging. MATERIALS AND METHODS: Thirty-two patients with squamous cell carcinoma of the uterine cervix were studied. Magnetic resonance imaging of the pelvis was performed after clinical staging. Magnetic resonance imaging findings were compared with the classic fields described for the "box" technique. Target volume within less than 1 cm margins of the fields' limits was considered as geographic miss. RESULTS: Classical radiation field limits were inadequate in 24 cases (75%), all in the anterior (46%) or posterior (40%) border of the lateral fields. CONCLUSION: Magnetic resonance detected a high probability of geographic miss on conventional radiotherapy planning in this population, both in initial and advanced stages of the disease.

Keywords : Uterine cervix cancer; Radiotherapy; Magnetic resonance imaging.

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