scholarly journals Image quality evaluation of intra‐irradiation cone‐beam computed tomography acquired during one‐ and two‐arc prostate volumetric‐modulated arc therapy delivery: A phantom study

2020 ◽  
Vol 21 (12) ◽  
pp. 231-239
Author(s):  
Hiraku Iramina ◽  
Ayaka Kitamura ◽  
Mitsuhiro Nakamura ◽  
Takashi Mizowaki
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Cone Beam Computed Tomography ◽  
Quality Evaluation ◽  
Volumetric Modulated Arc Therapy ◽  
Phantom Study ◽  
Cone Beam ◽  
Image Quality Evaluation ◽  
Arc Therapy ◽  
Therapy Delivery

scholarly journals Analysis of Dosimetric Impacts of Cone Beam Computed Tomography–Based Volumetric Modulated Arc Therapy Planning

2016 ◽  
Vol 47 (2) ◽  
pp. 160-170 ◽  
Author(s):  
Manthala Padannayil Noufal ◽  
Kallikuzhiyil Kochunny Abdullah ◽  
Puzhakal Niyas ◽  
Thekedath Sankran Sankaran ◽  
Plankudy Ragavan Sasindaran
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Volumetric Modulated Arc Therapy ◽  
Cone Beam ◽  
Therapy Planning ◽  
Arc Therapy

scholarly journals Access of Patients With Lung Cancer to High Technology Radiation Therapy in Brazil

2021 ◽  
pp. 726-733
Author(s):  
Lilian Dantonino Faroni ◽  
Arthur Accioly Rosa ◽  
Veronica Aran ◽  
Renan Serrano Ramos ◽  
Carlos Gil Ferreira
Keyword(s):  
Public Health ◽  
Computed Tomography ◽  
Lung Cancer ◽  
Radiation Therapy ◽  
Cone Beam Computed Tomography ◽  
Volumetric Modulated Arc Therapy ◽  
High Technology ◽  
Cone Beam ◽  
Intensity Modulated ◽  
Arc Therapy

PURPOSE Lung cancer is a global health problem, with more than 220,000 new cases and 150,000 deaths per year in the United States. Likewise, in Brazil, lung cancer is the most lethal cancer with 30,200 new cases expected in 2020. Regarding treatment types, radiation therapy (RT) represents an important approach, since 60%-70% of the patients will receive this modality of treatment during the course of their disease. However, access to RT remains challenging because of the socioeconomic inequalities in the Brazilian population, where approximately 100,000 patients/year die without access to RT. This work provides an overview on the availability of high technology RT in Brazil. METHODS A retrospective study was performed using the Brazilian Radiotherapy Census, local public and private databases, and the current literature published in 2019. RESULTS The Brazilian radiotherapy network relies on approximately 363 linear accelerators and 20 cobalt machines that remain operational. Most of these machines are installed at public health facilities. Regarding high technology, intensity-modulated RT is available in 53.7% (n = 130) and volumetric modulated arc therapy in 28.5% (n = 69) of the institutions, although only 19.8% (n = 48) of those facilities are capable of performing image-guided RT using cone beam computed tomography. Considering only the public health care system, the scenario is more restricted, with 40.1% (n = 65) of the institutions offering intensity-modulated RT, 21% (n = 34) volumetric modulated arc therapy, and 14.8% (n = 24) using cone beam computed tomography. Because of these scare resources, only 16% of Radiation Departments offer stereotactic body RT. CONCLUSION Brazil still needs to improve and provide high and safer RT technologies to patients with lung cancer across all Brazilian regions to attend the population needs and obtain better patient outcomes.

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