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Späte Nebenwirkungen der 3T-MRT-gesteuerten 3D-High-Dose-Rate-Brachytherapie bei Gebärmutterhalskrebs : Erfahrungen einer Klinik [Late side effects of 3T MRI-guided 3D high-dose rate brachytherapy of cervical cancer : Institutional experiences]
R. Vojtíšek, E. Sukovská, J. Baxa, M. Budíková, P. Kovářová, J. Fínek,
Language English Country Germany
Document type Journal Article
- MeSH
- Brachytherapy adverse effects MeSH
- Radiotherapy Dosage * MeSH
- Colon, Sigmoid radiation effects MeSH
- Dose Fractionation, Radiation MeSH
- Combined Modality Therapy MeSH
- Organs at Risk radiation effects MeSH
- Humans MeSH
- Magnetic Resonance Imaging * MeSH
- Urinary Bladder radiation effects MeSH
- Uterine Cervical Neoplasms pathology radiotherapy MeSH
- Follow-Up Studies MeSH
- Radiation Injuries etiology MeSH
- Radiotherapy, Image-Guided adverse effects MeSH
- Rectum radiation effects MeSH
- Neoplasm Staging MeSH
- Check Tag
- Humans MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
PURPOSE: This article reports experiences with 3T magnetic resonance imaging(MRI)-guided brachytherapy (BT) for cervical cancer focusing on late side effects. METHODS: Between June 2012 and March 2017 a total of 257 uterovaginal BT administrations were performed in 61 consecutive patients with inoperable cervical cancer. All patients were treated with BT combined with external beam radiotherapy. RESULTS: The mean HR-CTV (high risk-clinical target volume) D90 was 87 ± 5.1 Gy equivalent dose corresponding to the conventional fractionation using 2 Gy per fraction (EQD2, range 70.7-97.9 Gy). The mean doses in OAR (organs at risk), namely rectum, sigmoid and bladder were D2 cm3rectum = 62.6 ± 6.9 Gy EQD2 (range 38.2-77.2 Gy), D2 cm3sigmoid = 66.2 ± 6.8 Gy EQD2 (43.2-78.6 Gy) and D2 cm3bladder = 75.1 ± 8.3 Gy EQD2 (58.2-92.6 Gy). There were no signs of late gastrointestinal (GI) toxicity in 49 patients, grade 3 toxicity was seen in 2 patients and grade 4 toxicity in 3 patients. There were no signs of late genitourinary (GU) toxicity in 41 patients, grade 3 toxicity was seen in 4 patients and no signs of grade 4 toxicity were seen. After the treatment, 60 patients (98.4%) achieved locoregional remission. In 54 patients (88.5%) the remission was complete, whereas in 6 patients (9.8%) remission was partial. CONCLUSION: The use of 3T MRI-guided BT leads to achievement of high rates of local control with limited late morbidity as demonstrated in this series of patients.
Late side effects of 3T MRI-guided 3D high-dose rate brachytherapy of cervical cancer : Institutional experiences
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- $a PURPOSE: This article reports experiences with 3T magnetic resonance imaging(MRI)-guided brachytherapy (BT) for cervical cancer focusing on late side effects. METHODS: Between June 2012 and March 2017 a total of 257 uterovaginal BT administrations were performed in 61 consecutive patients with inoperable cervical cancer. All patients were treated with BT combined with external beam radiotherapy. RESULTS: The mean HR-CTV (high risk-clinical target volume) D90 was 87 ± 5.1 Gy equivalent dose corresponding to the conventional fractionation using 2 Gy per fraction (EQD2, range 70.7-97.9 Gy). The mean doses in OAR (organs at risk), namely rectum, sigmoid and bladder were D2 cm3rectum = 62.6 ± 6.9 Gy EQD2 (range 38.2-77.2 Gy), D2 cm3sigmoid = 66.2 ± 6.8 Gy EQD2 (43.2-78.6 Gy) and D2 cm3bladder = 75.1 ± 8.3 Gy EQD2 (58.2-92.6 Gy). There were no signs of late gastrointestinal (GI) toxicity in 49 patients, grade 3 toxicity was seen in 2 patients and grade 4 toxicity in 3 patients. There were no signs of late genitourinary (GU) toxicity in 41 patients, grade 3 toxicity was seen in 4 patients and no signs of grade 4 toxicity were seen. After the treatment, 60 patients (98.4%) achieved locoregional remission. In 54 patients (88.5%) the remission was complete, whereas in 6 patients (9.8%) remission was partial. CONCLUSION: The use of 3T MRI-guided BT leads to achievement of high rates of local control with limited late morbidity as demonstrated in this series of patients.
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