scholarly journals The Shielding Volume Reduction in a High Dose Rate Brachytherapy Room

2021 ◽  
Author(s):  
◽  
S. González-Guzmán
Keyword(s):  
Radiation Safety ◽  
Treatment Time ◽  
High Dose Rate ◽  
High Dose ◽  
Regulatory Body ◽  
Energy Agency ◽  
Room Design ◽  
Safety Parameters ◽  
Iridium 192 ◽  
Shielding Material

This paper describes a method to reduce the shielding thickness in a high dose brachytherapy treatment room, with an Iridium-192 source, using the protocols established by the International Atomic Energy Agency in its Safety Report No. 47; calculating the volume of shielding material, without failing to comply with the radiation safety parameters established by the General Radiation Safety Regulations and regulations in force by the Comisión Nacional de Seguridad Nuclear y Salvaguardias, which acts as the regulatory body for the use of radioactive sources in Mexico. The shielding of the walls was determined as a function of room design, source activity, workload, use factor, number of weekly treatments, treatment time, and shielding material properties. The results show that the shielding volume can be reduced by 19.592% and 20.727% for five-point and eleven-point fractionation, respectively, for a Brachytherapy room with a maze.

NCS Report 7: Recommendations for the calibration of Iridium-192 high dose rate sources

1994 ◽  
Author(s):  
J.L.M. Venselaar ◽  
A.H.L. Aalbers ◽  
W.F.M. Brouwer ◽  
H. Meertens ◽  
J.J. Petersen ◽  
...  
Keyword(s):  
Dose Rate ◽  
High Dose Rate ◽  
High Dose ◽  
Iridium 192

Real-Time Verification of a High-Dose-Rate Iridium 192 Source Position Using a Modified C-Arm Fluoroscope

2017 ◽  
Vol 97 (4) ◽  
pp. 858-865 ◽  
Author(s):  
Takayuki Nose ◽  
Masashi Chatani ◽  
Yuki Otani ◽  
Teruki Teshima ◽  
Shinichirou Kumita
Keyword(s):  
Dose Rate ◽  
Real Time ◽  
High Dose Rate ◽  
High Dose ◽  
Source Position ◽  
Iridium 192

Intraoperative and percutaneous iridium-192 high-dose-rate brachytherapy for previously irradiated lesions of the spine

Brachytherapy ◽  
2013 ◽  
Vol 12 (5) ◽  
pp. 449-456 ◽  
Author(s):  
Michael R. Folkert ◽  
Mark H. Bilsky ◽  
Gil'ad N. Cohen ◽  
Marco Zaider ◽  
Eric Lis ◽  
...  
Keyword(s):  
Dose Rate ◽  
High Dose Rate ◽  
High Dose ◽  
High Dose Rate Brachytherapy ◽  
Iridium 192

High-dose-rate iridium-192 afterloading therapy combined with external beam radiotherapy for T1c-T3bN0M0 prostate cancer

Urology ◽  
2004 ◽  
Vol 64 (3) ◽  
pp. 556-560 ◽  
Author(s):  
Yoshimasa Jo ◽  
Junichi Hiratsuka ◽  
Tomohiro Fujii ◽  
Atsushi Takenaka ◽  
Masato Fujisawa
Keyword(s):  
Prostate Cancer ◽  
Dose Rate ◽  
External Beam Radiotherapy ◽  
High Dose Rate ◽  
High Dose ◽  
External Beam ◽  
Afterloading Therapy ◽  
Iridium 192

Postoperative single versus multiple fractions high-dose rate iridium-192 surface mould brachytherapy for keloid treatment: a comparative study

2017 ◽  
Vol 17 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Misbah Ahmad ◽  
Habib Ahmad ◽  
Muhammad Rauf Khattak ◽  
Kamran Ali Shah ◽  
Nabila Javed ◽  
...  
Keyword(s):  
Developing Countries ◽  
Effective Dose ◽  
Dose Rate ◽  
Dose Regimen ◽  
Cost Effective ◽  
High Dose Rate ◽  
High Dose ◽  
Single Fraction ◽  
Keloid Scars ◽  
Iridium 192

AbstractBackground and purposeIn developing countries like Pakistan the cost effectiveness and patient convenience in any treatment modality is a question of major concern. The purpose of this study was two-fold; first to report our experience with a high-dose rate Iridium-192 surface mould brachytherapy of keloid scars after surgical excision, using different radiation treatment regimen and second to establish the most convenient and cost effective treatment protocol having no compromise on the treatment outcomes.Materials and methodsFrom January 2012 to April 2015 a total 51 patients with 65 keloid lesions underwent postoperative Iridium-192 high-dose rate surface mould brachytherapy. The dose regimen used was: 8 Gy in a single fraction, 10 Gy in a single fraction, 15 Gy in three fractions and 18 Gy in three fractions. The median follow-up period was 33 months (range 15–53 months).ResultsThe success rates were 57·2, 89·5, 85 and 89·5% for the treatment regimen of 8 Gy/F×1, 10 Gy/F×1, 5 Gy/F×3 and 6 Gy/F×3, respectively. Grade 2 or above radiation induced toxicity was not observed.FindingsThe results of this study show that a dose regimen of 10 Gy (biological effective dose=20 Gy) in a single fraction have comparable results with a dose regimen of 15 Gy in three fractions or 18 Gy in three fractions. 10 Gy in a single fraction is therefore the most convenient and cost effective dose regimen for the management of keloid scars in developing countries like Pakistan, while 8 Gy in a single fraction is considered suboptimal and discouraged in practice.

Design and Dose Distribution for Rectal Applicators for the High Dose Rate Remote Afterloading Iridium-192 Brachytherapy System

1989 ◽  
Vol 14 (3) ◽  
pp. 209-218 ◽  
Author(s):  
Debra K. Kennedy ◽  
Lawrence M. Klonowski ◽  
Randall F. Wade ◽  
Shankar C. Sanwalani ◽  
Sulochana D. Yalavarthi
Keyword(s):  
Dose Rate ◽  
Dose Distribution ◽  
High Dose Rate ◽  
High Dose ◽  
Iridium 192
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