Implementation of GaN based real-time source position monitoring in HDR brachytherapy

Wang, Ruoxi; Ribouton, J.; Pittet, Patrick; Guiral, Pierrick; Jalade, P.; Lu, Guo‐Neng

doi:10.1016/j.radmeas.2014.05.021

Cited by 17 publications

(13 citation statements)

References 13 publications

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“…To the best of our knowledge, it is the first time ever that such a system is presented in literature. In fact, Wang et al [23] and Guiral et al [24] also equipped a commercial MVC applicator with four GaN-based dosimeters. They respectively.…”

Section: Discussionmentioning

confidence: 99%

An innovative gynecological HDR brachytherapy applicator system for treatment delivery and real-time verification

et al. 2019

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Section: Discussionmentioning

confidence: 99%

An innovative gynecological HDR brachytherapy applicator system for treatment delivery and real-time verification

et al. 2019

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“… Point detector : The measured dose rate by a point detector can be transformed into a distance between source and detector by using TG43 [32] , [33] . By adding the information from dose rate measurements at multiple positions, triangulation can be used to determine the actual position of the source or source catheter relative to the detector(s) [26] , [34] , [35] , [36] . Flat panel detector : The panel is placed close to the patient (e.g.…”

Section: Methods For Ivdmentioning

confidence: 99%

In vivo dosimetry in brachytherapy: Requirements and future directions for research, development, and clinical practice

Fonseca

Johansen

Smith

et al. 2020

Physics and Imaging in Radiation Oncology

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Brachytherapy can deliver high doses to the target while sparing healthy tissues due to its steep dose gradient leading to excellent clinical outcome. Treatment accuracy depends on several manual steps making brachytherapy susceptible to operational mistakes. Currently, treatment delivery verification is not routinely available and has led, in some cases, to systematic errors going unnoticed for years. The brachytherapy community promoted developments in in vivo dosimetry (IVD) through research groups and small companies. Although very few of the systems have been used clinically, it was demonstrated that the likelihood of detecting deviations from the treatment plan increases significantly with time-resolved methods. Time-resolved methods could interrupt a treatment avoiding gross errors which is not possible with time-integrated dosimetry. In addition, lower experimental uncertainties can be achieved by using source-tracking instead of direct dose measurements. However, the detector position in relation to the patient anatomy remains a main source of uncertainty. The next steps towards clinical implementation will require clinical trials and systematic reporting of errors and nearmisses. It is of utmost importance for each IVD system that its sensitivity to different types of errors is well understood, so that end-users can select the most suitable method for their needs. This report aims to formulate requirements for the stakeholders (clinics, vendors, and researchers) to facilitate increased clinical use of IVD in brachytherapy. The report focuses on high dose-rate IVD in brachytherapy providing an overview and outlining the need for further development and research. ☆ During the 1st ESTRO Physics Workshop celebrated in November 2017 in Glasgow, Scotland, a task group was created to stimulate the wider adoption of in vivo dosimetry for radiotherapy. The members of this task group, authors of this report, were selected on the basis of their expertise to contribute relevant input to the area of study and their long-term experience in the clinical implementation of in vivo dosimetry systems.

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“…The detected ratio for dwell position errors was 96% at 1 mm, and reached 100% at 1.5 mm and beyond. The detected ratio for dwell time errors was 90% at 0.2 s, and 100% at 0.3 s and beyond [ 25 , 26 , 113 , 114 ].…”

Section: Phantoms With Integrated Radiation Detectorsmentioning

confidence: 99%

A review of brachytherapy physical phantoms developed over the last 20 years: clinical purpose and future requirements

Wilby¹,

Palmer²,

Polak³

et al. 2021

jcb

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Within the brachytherapy community, many phantoms are constructed in-house, and less commercial development is observed as compared to the field of external beam. Computational or virtual phantom design has seen considerable growth; however, physical phantoms are beneficial for brachytherapy, in which quality is dependent on physical processes, such as accuracy of source placement. Focusing on the design of physical phantoms, this review paper presents a summary of brachytherapy specific phantoms in published journal articles over the last twenty years (January 1, 2000-December 31, 2019). The papers were analyzed and tabulated by their primary clinical purpose, which was deduced from their associated publications. A substantial body of work has been published on phantom designs from the brachytherapy community, but a standardized method of reporting technical aspects of the phantoms is lacking. In-house phantom development demonstrates an increasing interest in magnetic resonance (MR) tissue mimicking materials, which is not yet reflected in commercial phantoms available for brachytherapy. The evaluation of phantom design provides insight into the way, in which brachytherapy practice has changed over time, and demonstrates the customised and broad nature of treatments offered.

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Implementation of GaN based real-time source position monitoring in HDR brachytherapy

Cited by 17 publications

References 13 publications

An innovative gynecological HDR brachytherapy applicator system for treatment delivery and real-time verification

An innovative gynecological HDR brachytherapy applicator system for treatment delivery and real-time verification

In vivo dosimetry in brachytherapy: Requirements and future directions for research, development, and clinical practice

A review of brachytherapy physical phantoms developed over the last 20 years: clinical purpose and future requirements

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