Evaluation of rectal volume correlation with dosimetric parameters during optimized intracavitary high-dose-rate brachytherapy 
in cervical cancer

Shahbazian, H B; Birgani, Mohammad Javad Tahmasebi; Bagheri, Ali; Arvandi, Shole; Razmjoo, Sasan; Ghadamgahi, Pari; Bakhali, Roksana; Feli, Maryam

doi:10.5114/jcb.2020.94586

Cited by 2 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the rectum and sigmoid, the volume change can occur from peristalsis and affect contents of the bowels, as can the administration of anti-spasmodic medication, bowel preparation, or rectal gas removal. Therefore, appropriate preparation of the bowel should be considered before the procedure is initiated [16][17][18][19][20].…”

Section: Discussionmentioning

confidence: 99%

Brachytherapy dose changes: comparing in-room and out-room image-guided brachytherapy. A randomized study

Muangwong¹,

Tharavichitkul²,

Sripan³

et al. 2022

jcb

View full text Add to dashboard Cite

Purpose: Image-based brachytherapy, involving an image machine and a brachytherapy unit in the same room (in-room brachytherapy [IRBT]), limits patient movements; however, this technique may not be feasible in high workload centers. In this study, we compared changes in the dose and volume of organs at risk (OARs) with out-room brachytherapy (ORBT) technique, in which patients musted be transferred to a waiting room and then transferred back for brachytherapy delivery.Material and methods: This was a randomized prospective study comparing changes in D 2cc doses and volume of OARs during IRBT and ORBT. Patients underwent CT for treatment planning (CT1) installed in brachytherapy loading room, and another CT immediately before brachytherapy (CT2) during each fraction. While patients remained on CT table after CT1 during treatment planning and delivery in IRBT arm, they were transferred out to waiting room and back to CT table in ORBT arm. CT2 was analyzed with CT1 to evaluate any changes in volumes and doses.Results: A total of 294 fractions of brachytherapy were considered. The findings indicated no significant differences in the mean D 2cc changes (Gy) (CT2 minus CT1) to the bladder, rectum, and sigmoid between IRBT and ORBT (mean

show abstract

Section: Discussionmentioning

confidence: 99%

Brachytherapy dose changes: comparing in-room and out-room image-guided brachytherapy. A randomized study

Muangwong¹,

Tharavichitkul²,

Sripan³

et al. 2022

jcb

View full text Add to dashboard Cite

show abstract

Assessing Heterogeneity Effects on Points A, B, and Organs at Risk Doses in High-dose-Rate Brachytherapy for Cervical Cancer – A Comparison of 192Ir and 60Co Sources Using Monte Carlo N-Particle 5

Sadeghi,

Sina,

Meigooni

2024

Journal of Medical Physics

View full text Add to dashboard Cite

Purpose: The present article deals with investigating the effects of tissue heterogeneity consideration on the dose distribution of 192Ir and 60Co sources in high-dose-rate brachytherapy (HDR-BT). Materials and Methods: A Monte Carlo N-Particle 5 (MCNP5) code was developed for the simulation of the dose distribution in homogeneous and heterogeneous phantoms for cervical cancer patients. The phantoms represented water-equivalent and human body-equivalent tissues. Treatment data for a patient undergoing HDR-BT with a 192Ir source were used as a reference for validation, and for 60Co, AAPM Task Group 43 methodology was also applied. The dose values were calculated for both source types in the phantoms. Results: The results showed a good agreement between the calculated dose in the homogeneous phantom and the real patient’s treatment data, with a relative difference of less than 5% for both sources. However, when comparing the absorbed doses at critical points such as Point A right, Point A left, Point B right, Point B left, bladder International Commission on Radiation Units and Measurement (ICRU) point, and recto-vaginal ICRU point, the study revealed significant percentage differences (approximately 5.85% to 12.02%) between the homogeneous and heterogeneous setups for both 192Ir and 60Co sources. The analysis of dose–volume histograms (DVH) indicated that organs at risk, notably the rectum and bladder, still received doses within recommended limits. Conclusions: The study concludes that 60Co and 192Ir sources can be effectively used in HDR-BT, provided that careful consideration is given to tissue heterogeneity effects during treatment planning to ensure optimal therapeutic outcomes.

show abstract

Evaluation of rectal volume correlation with dosimetric parameters during optimized intracavitary high-dose-rate brachytherapy in cervical cancer

Cited by 2 publications

References 22 publications

Brachytherapy dose changes: comparing in-room and out-room image-guided brachytherapy. A randomized study

Brachytherapy dose changes: comparing in-room and out-room image-guided brachytherapy. A randomized study

Assessing Heterogeneity Effects on Points A, B, and Organs at Risk Doses in High-dose-Rate Brachytherapy for Cervical Cancer – A Comparison of 192Ir and 60Co Sources Using Monte Carlo N-Particle 5

Contact Info

Product

Resources

About