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Author(s):  
Stefan Gerlach ◽  
Alexander Schlaefer

Abstract Purpose of Review This review provides an overview of robotic systems in radiotherapy and radiosurgery, with a focus on medical devices and recently proposed research systems. We summarize the key motivation for using robotic systems and illustrate the potential advantages. Recent Findings. Robotic systems have been proposed for a variety of tasks in radiotherapy, including the positioning of beam source, patients, and imaging devices. A number of systems are cleared for use in patients, and some are widely used, particularly for beam and patient positioning. Summary The need for precise and safe delivery of focused high doses to the target region motivates the use of robots in radiotherapy. Flexibility in the arrangement of beams and the ability to compensate for target motion are key advantages of robotic systems. While robotic patient couches are widely used and robotic beam positioning is well established, brachytherapy robots are mostly considered in a research context.


2021 ◽  
pp. 152265
Author(s):  
Š. Meškinis ◽  
A. Vasiliauskas ◽  
R. Gudaitis ◽  
M. Andrulevičius ◽  
A. Guobienė

2021 ◽  
Vol 11 (23) ◽  
pp. 11126
Author(s):  
Riccardo Casagrande ◽  
Alberto Maistrello ◽  
Marco De Nardi ◽  
Mattia Dan ◽  
Mauro Recchia

The operation of SPIDER (Source for the Production of Ions of Deuterium Extracted from Radio-frequency plasma), full-scale prototype of ITER NBI (Neutral Beam Injector) radio-frequency ion source, pointed out deleterious effects caused by stray Radio-Frequency (RF) currents flowing in the electrical equipment not included in the RF power system. MITICA (Megavolt ITER Injector and Concept Advancement), the full-scale prototype of ITER NBI, is characterized by a similar design in terms of layout of the power supplies and connections to the beam source; thus, it is expected to be subject to the RF stray currents problem. SPIDER RF system is composed of four RF generators, four coaxial lines and four RF loads. Each RF generator is rated for operation at 200 kW in the frequency range 0.9 ÷ 1.1 MHz. The power is delivered to the four loads via as many RF coaxial lines, housed inside a multiconductor transmission line. Each load consists of a capacitive matching network and two plasma drivers in series. Due to the presence of stray connections at the generator and beam-source side (e.g., parasitic capacitances), unwanted RF currents can flow through alternative paths and negatively affect the components not intended for transmission of RF power, the output stages of power supplies and several diagnostics installed in the High-Voltage Deck (HVD) and at the beam source. This paper presents the development of a circuital model used to estimate the RF stray currents in SPIDER electrical system; the understanding of this phenomenon and the development of a model with predictive capabilities is fundamental for the assessment of the performance of both SPIDER and MITICA and, in general, of alternative RF system layouts with respect to the stray currents issue.


Author(s):  
Masahito Tagawa ◽  
Ryota Okura ◽  
Wataru Ide ◽  
Sasuga Horimoto ◽  
Keisuke Ezaki ◽  
...  

2021 ◽  
Vol 172 ◽  
pp. 112873
Author(s):  
F. Fellin ◽  
M. Dalla Palma ◽  
P. Tinti ◽  
P. Zaccaria ◽  
M. Zaupa
Keyword(s):  

2021 ◽  
Vol 92 (11) ◽  
pp. 113302
Author(s):  
Guodong Zhang ◽  
Lichang Guan ◽  
Min Cheng ◽  
Hong Gao

Author(s):  
R. Morisaki ◽  
J. Sakurai ◽  
C. Oka ◽  
T. Yamazaki ◽  
T. Akao ◽  
...  

2021 ◽  
Vol 171 ◽  
pp. 112600
Author(s):  
Yuming Gu ◽  
Yahong Xie ◽  
Jianglong Wei ◽  
Jun Li ◽  
Lizhen Liang ◽  
...  

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