Dosimetry of anal radiation in high-dose-rate brachytherapy for prostate cancer

Kälkner, Karl Mikael; Bengtsson, Emil; Eriksson, Simone; Holmberg, Carina; Nilsson, Sten; Levitt, Seymour H.; Lundell, Marie

doi:10.1016/j.brachy.2006.08.008

Cited by 4 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Irradiation times in this paper are given in nominal seconds, and since the decay-correction factor at the time of the measurements was about 1. 8 were calculated in accordance with the AAPM-TG43 protocol 30,31 as implemented in our own software. These reference values are referred to as treatment planning system ͑TPS͒ values.…”

Section: Iic Brachytherapy Systemmentioning

confidence: 99%

Characterization of a fiber‐coupled luminescence dosimetry system for online in vivo dose verification during brachytherapy

et al. 2009

View full text Add to dashboard Cite

A prototype of a new dose-verification system has been developed to facilitate prevention and identification of dose delivery errors in remotely afterloaded brachytherapy. The system allows for automatic online in vivo dosimetry directly in the tumor region using small passive detector probes that fit into applicators such as standard needles or catheters. The system measures the absorbed dose rate ͑0.1 s time resolution͒ and total absorbed dose on the basis of radioluminescence ͑RL͒ and optically stimulated luminescence ͑OSL͒ from aluminum oxide crystals attached to optical fiber cables ͑1 mm outer diameter͒. The system was tested in the range from 0 to 4 Gy using a solidwater phantom, a Varian GammaMed Plus 192 Ir PDR afterloader, and dosimetry probes inserted into stainless-steel brachytherapy needles. The calibrated system was found to be linear in the tested dose range. The reproducibility ͑one standard deviation͒ for RL and OSL measurements was 1.3%. The measured depth-dose profiles agreed well with the theoretical expectations computed with the EGSNRC Monte Carlo code, suggesting that the energy dependence for the dosimeter probes ͑relative to water͒ is less than 6% for source-to-probe distances in the range of 2-50 mm. Under certain conditions, the RL signal could be greatly disturbed by the so-called stem signal ͑i.e., unwanted light generated in the fiber cable upon irradiation͒. The OSL signal is not subject to this source of error. The tested system appears to be adequate for in vivo brachytherapy dosimetry.

show abstract

Section: Iic Brachytherapy Systemmentioning

confidence: 99%

Characterization of a fiber‐coupled luminescence dosimetry system for online in vivo dose verification during brachytherapy

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Published studies on in vivo brachytherapy dosimetry have focused on time-integrated dose measurements using TLDs, 4,10,11,13 radiophotoluminescence glass detectors, 2 diodes, 3,14 or MOSFETs. 15,16 In other words, most studies have been based on the total dose per treatment session rather than, for example, the dose for individual dwell positions.…”

Section: Introductionmentioning

confidence: 99%

Time‐resolved in vivo luminescence dosimetry for online error detection in pulsed dose‐rate brachytherapy

et al. 2009

View full text Add to dashboard Cite

In vivo fiber-coupled RL/OSL dosimetry based on detectors placed in standard brachytherapy needles was demonstrated. The time-resolved dose-rate measurements were found to provide a good way to visualize the progression and stability of PDR brachytherapy dose delivery, and time-resolved dose-rate measurements provided an increased sensitivity for detection of dose-delivery errors compared with time-integrated dosimetry.

show abstract

In Vivo Dosimetry of High-Dose-Rate Interstitial Brachytherapy in the Pelvic Region: Use of a Radiophotoluminescence Glass Dosimeter for Measurement of 1004 Points in 66 Patients With Pelvic Malignancy

Nose¹,

Koike²,

Yoshida³

et al. 2008

International Journal of Radiation Oncology*Biology*Physics

View full text Add to dashboard Cite

Dosimetry of anal radiation in high-dose-rate brachytherapy for prostate cancer

Cited by 4 publications

References 8 publications

Characterization of a fiber‐coupled luminescence dosimetry system for online in vivo dose verification during brachytherapy

Characterization of a fiber‐coupled luminescence dosimetry system for online in vivo dose verification during brachytherapy

Time‐resolved in vivo luminescence dosimetry for online error detection in pulsed dose‐rate brachytherapy

In Vivo Dosimetry of High-Dose-Rate Interstitial Brachytherapy in the Pelvic Region: Use of a Radiophotoluminescence Glass Dosimeter for Measurement of 1004 Points in 66 Patients With Pelvic Malignancy

Contact Info

Product

Resources

About