scholarly journals Online MR evaluation of inter- and intra-fraction uterus motions and bladder volume changes during cervical cancer external beam radiotherapy

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Xu Li ◽  
Lizhen Wang ◽  
Zhen Cui ◽  
Yukun Li ◽  
Pei Liu ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
External Beam Radiotherapy ◽  
Bladder Volume ◽  
External Beam ◽  
Ultrasound Scan ◽  
Filling Rate ◽  
Volume Changes ◽  
Mri Scan ◽  
Bladder Filling ◽  
Ct Simulation

Abstract Purpose/objective(s) The purpose of the study was to assess the uterus motions and bladder volume changes of fractional movements in cervical sites throughout the external beam radiotherapy (EBRT) treatment. Materials/methods A prospective online MR imaging tracking study was conducted in EBRT 43 patients with at least 4 scans during each treatment (before: ultrasound scan, MRI scan, CBCT scan, after: MRI scan) were included. In order to improve the treatment repeatability, each patient was instructed to empty the bladder and drink 500 ml water 1 h before CT simulation and each treatment. If the ultrasound scan result reached the CT simulation volume of bladder, the treatment began. Bladder was outlined on the T2 weighted axial sequence and CBCT image by the two observers to avoid the influence of contouring. The data of bladder volume and scanning time were accurately recorded. The bladder volumes, filling rates and uterus motion were retrospectively analyzed by MIM software. Results Inter-fraction variation of the bladder volume was significant (p < 0.0001). Intra-fraction mean increase of the bladder volume was modest (30 cc) but significant (p < 0.001). Both inter- and intra-fraction of the uterus motion were significant. The average time between the pre-and post-fraction MRI scans was 27.82 ± 7.12 min (range 10–55 min) for IMRT plans and 24.14 ± 5.86 min (range7-38 min) for VMAT plan. Average bladder filling rate was 3.43 ml/min. The bladder filling rate did not change significantly with the course of treatment, but the bladder was more intolerant. Conclusion This is the most detailed assessment of intra-fraction and inter-fraction motion during EBRT for cervical cancer. Finally, this study will inform appropriate treatment margins for online adaptive radiotherapy. We suggest that at least one image scan is needed before the EBRT. The portable US scanner provides a quick but unreliable measurement of the bladder volume. There is a significant statistical difference between the results of ultrasonic scanning and that of image scanning.

18F-FDG-PET/CT guided external beam radiotherapy volumes in inoperable uterine cervical cancer

2018 ◽  
Vol 62 (4) ◽  
Author(s):  
Judit A. Adam ◽  
Hester Arkies ◽  
Karel Hinnen ◽  
Lukas J. Stalpers ◽  
Jan H. van Waesberghe ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Fdg Pet ◽  
External Beam Radiotherapy ◽  
Uterine Cervical Cancer ◽  
External Beam ◽  
Ct Guided ◽  
Pet Ct ◽  
18F Fdg ◽  
Fdg Pet Ct

Utilization and outcomes of adjuvant systemic chemotherapy alone in high risk, early stage cervical cancer in the United States

2021 ◽  
pp. ijgc-2021-002655
Author(s):  
Koji Matsuo ◽  
David J Nusbaum ◽  
Shinya Matsuzaki ◽  
Maximilian Klar ◽  
Muneaki Shimada ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
High Risk ◽  
Systemic Chemotherapy ◽  
Early Stage ◽  
External Beam Radiotherapy ◽  
The United States ◽  
Nodal Metastasis ◽  
External Beam ◽  
Parametrial Invasion ◽  
Early Stage Cervical Cancer

ObjectiveTo examine trends and outcomes related to adjuvant systemic chemotherapy alone for high risk, early stage cervical cancer.MethodsThis retrospective observational study queried the National Cancer Institute’s Surveillance, Epidemiology, and End Results Program from 2000 to 2016. Surgically treated women with American Joint Commission on Cancer stages T1–2 cervical cancer who had high risk factors (nodal metastasis and/or parametrial invasion) and received additional therapy were examined. Propensity score inverse probability of treatment weighting was used to assess the survival estimates for systemic chemotherapy versus external beam radiotherapy with chemotherapy.ResultsAmong 2462 patients with high risk factors, 185 (7.5%) received systemic chemotherapy without external beam radiotherapy, of which the utilization significantly increased over time in multivariable analysis (adjusted odds ratio per 1 year increment 1.06, 95% confidence interval (CI) 1.02 to 1.09). In weighted models, adjuvant chemotherapy and combination therapy (external beam radiotherapy and chemotherapy) had comparable overall survival among patients aged <40 years (hazard ratio (HR) 0.73, 95% CI 0.41 to 1.33), in adenocarcinoma or adenosquamous histologies (HR 0.90, 95% CI 0.62 to 1.32), and in those with nodal metastasis alone without parametrial tumor invasion (HR 1.17, 95% CI 0.84 to 1.62). In contrast, systemic chemotherapy alone was associated with increased all cause mortality compared with combination therapy in patients aged ≥40 years (HR 1.57, 95% CI 1.19 to 2.06), with squamous histology (HR 1.63, 95% CI 1.19 to 2.22), and with parametrial invasion alone (HR 1.87, 95% CI 1.09 to 3.20) or parametrial invasion with nodal metastasis (HR 1.64, 95% CI 1.06 to 2.52).ConclusionUtilization of adjuvant systemic chemotherapy alone for high risk, early stage cervical cancer is increasing in the United States in the recent years. Our study suggests that survival effects of adjuvant systemic chemotherapy may vary based on patient and tumor factors. External beam radiotherapy with chemotherapy remains the standard for high risk, early stage cervical cancer, and use of adjuvant systemic chemotherapy without external beam radiotherapy should be considered with caution.

A PROSPECTIVE RANDOMIZED STUDY TO COMPARE THE CONCURRENT CHEMO-RADIATION VERSUS HYPO-FRACTIONATED CHEMO-RADIATION IN LOCALLY ADVANCED CERVICAL CANCER.

2021 ◽  
pp. 40-42
Author(s):  
Arpan Jana ◽  
Pabitra Das ◽  
Poulami Gupta ◽  
Phalguni Gupta
Keyword(s):  
Cervical Cancer ◽  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
External Beam Radiotherapy ◽  
Locally Advanced ◽  
Intracavitary Brachytherapy ◽  
External Beam ◽  
Carcinoma Cervix ◽  
Advanced Carcinoma

Background: Concurrent chemo-radiation is the standard treatment worldwide for locally advanced squamous Cell carcinoma cervix. However, conventional chemo-radiotherapy is also associated with unacceptable local and systemic failure rates for locally advanced disease. Biologically squamous cell carcinoma of head- neck cancer and cervical cancer behaves quite similarly in response to radiotherapy. So, it can be expected that, altered fractionation can increase the local control in case of squamous cell carcinoma cervix than conventional radiotherapy. There is no randomised control trial for carcinoma cervix till date, which compares conventional chemo-radiation with hypo-fractionated chemo-radiation. Aims And Objectives: The present study was planned to compare local disease control and acute toxicity of conventional chemo-radiation with hypo-fractionated chemo-radiation in locally advanced carcinoma cervix. Materials And Methods: In Conventional Chemo-radiation Arm A patients (n=30) received external beam radiotherapy 50 Gy in 25 fractions in 5 weeks accompanied by weekly intravenous Cisplatin 40mg/m2 followed by intracavitary brachytherapy 7 Gy per fraction once in a week for 3 weeks. The second group of hypo-fractionated Arm B received external beam radiotherapy 45 Gy in 20 fractions in 4 weeks accompanied by weekly intravenous Cisplatin 40mg/m2 followed by intracavitary brachytherapy 9 Gy per fraction once in a week for 2 weeks. Results: Grade II diarrhea were seen more in Arm B 17 (56.66%) compare to Arm A 12(40%) and grade III diarrhea was seen 4 (3.33%) in Arm B and 2(6.66%) in Arm A. At 2 months and 6 months after completion of treatment Complete response were 25 (83.4%) in Arm A compare to 22 (73.3%) in Arm B and 20 (74.1%) in Arm A and 18 (72%) in Arm B respectively. Conclusion: Hypo-fractioned radiotherapy may be used as an alternate protocol for treatment of locally advanced carcinoma cervix with acceptable toxicities.

Impact of Brachytherapy Boost and Dose-escalated External Beam Radiotherapy in Margin Positive Cervical Cancer Treated With Chemotherapy and Radiation

2020 ◽  
Vol 43 (1) ◽  
pp. 35-42
Author(s):  
Bryan J. Ager ◽  
Anna Torgeson ◽  
Samual R. Francis ◽  
Lindsay M. Burt ◽  
David K. Gaffney ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
External Beam Radiotherapy ◽  
External Beam ◽  
Brachytherapy Boost ◽  
Margin Positive
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