DOTmed Home MRI Oncology Ultrasound Molecular Imaging X-Ray Cardiology Health IT Business Affairs
News Home Parts & Service Operating Room CT Women's Health Proton Therapy Endoscopy HTMs Mobile Imaging
SEARCH
当前地点:
>
> This Story


注册记数器 to rate this News Story
Forward Printable StoryPrint Comment

 

 

Molecular Imaging Homepage

NorthStar, Shine in line for federal funding Bringing $20 million in additional funding to domestic moly-99 in the US

Adel Abdullah and Aaron Hargrave Positron appoints president and vice president

Theranostics – Nuclear medicine´s fountain of youth Combining therapeutics with diagnostics, opportunities and challenges

New House bill calls for change in CMS definition of radiopharmaceuticals Reimburse separately instead of as bundled payment

Cerveau Technologies partners with Ionis Pharmaceuticals Use of PET agent, [F-18]MK-6240

New PET imaging method may yield benefits over FDG for detecting certain cancers Gallium-68-labeled FAPI tracer yields promising results

Dr. David Wong Professor recognized for contributions to PET and Theranostics

SVSR unveils Siemens Horizon PET/CT trailer Putting a small and powerful scanner on a coach

Philips to manage medical imaging equipment for Aussie providers for 20 years First-of-its-kind partnership in Australia and ASEAN Pacific region

Under AMG, Piramal Imaging changes name to Life Molecular Imaging LMI is being run within the Alliance Medical Molecular Imaging division

Researchers in Brazil have constructed
a model to improve particle flow efficiency
from accelerators

New model boosts flow efficiency of particle accelerators

John R. Fischer , Staff Reporter
Greater efficiency in the delivery of particle therapies may soon be available for diagnostic imaging and cancer treatment with the development of a new model for stabilizing particle behavior.

Researchers at São Paulo's Physics Institute (IF-USP) in Brazil have developed a new archetype for controlling the chaos of particles within accelerators, enabling smoother administration for maintaining top image quality and reducing the risk of damage to equipment.

Story Continues Below Advertisement

RaySafe helps you avoid unnecessary radiation

RaySafe solutions are designed to minimize the need for user interaction, bringing unprecedented simplicity & usability to the X-ray room. We're committed to establishing a radiation safety culture wherever technicians & medical staff encounter radiation.



"When the particles become chaotic, the beam loses coherence. It means that particles have different energies and velocities, such that the particle beam is not suitable for medical imaging," researcher Meirielen C. de Sousa, a post-doctoral student at IF-USP, told HCB News. "Besides reducing the quality of images, chaotic particles may also damage the equipment. For good quality medical images, the particle beam should be coherent. Its particles should behave regularly, and present approximately the same energy and velocity at the delivery moment."

Chaos within a system is created by the interaction between an electromagnetic wave and the particles. The interaction between an electrostatic wave with well-defined parameters and particles in an accelerator provides greater control over the chaos within the system and creates multiple barriers in the process. These barriers, however, do not seal the area as precisely.

Testing their approach in a tokamak, an experimental plasma-based toroidal reactor used in nuclear fusion, researchers generated particles and accelerated them with back-to-back injections of energy from electromagnetic waves.

They then created a single barrier using resonance magnetic perturbation (RMP). The reaction of superheated plasma to the RPM trapped the ionized gas in a single region, preventing it from interacting with the walls of the system while increasing maximum particle velocity and reducing the requisite initial velocity.

Using numerical simulations, researchers determined that the simulated final velocity for a low-amplitude wave rose by seven percent, while the initial velocity fell by 73 percent.

Final velocity for a higher amplitude grew by three percent while initial velocity decreased by approximately 98 percent, with the barrier regularizing the chaos in a system, showing that such blocks reduce the initial velocity of particles upon injection into an accelerator.

In addition to medical imaging and cancer treatment, the model could be applied in high-energy physics; various industries, such as food sterilization, cargo scanning, electronic engineering; and in investigative work such as oil prospecting, archaeological surveying and analysis of artworks.

Though still under development, plasma accelerators can be designed in much smaller sizes than conventional accelerators, a fact which could make accelerators easier to operate with less space required and at reduced costs, according to Sousa.

"Nowadays, particle accelerators are usually large structures that require a lot of space," she said. "Reducing the size of particle accelerators is a very important goal for the accelerator community, as well as reducing costs and making accelerators easier to operate."

Sousa plans and her supervisor, Iberê Luiz Caldas, plan to submit their approach to experimental physicists for testing.

The findings were published in the Physics of Plasmas.

Molecular Imaging Homepage


You Must Be Logged In To Post A Comment

做广告
提升您的品牌知名度
拍卖+私人销售
获得最好的价格
买设备/配件
找到最低价格
每日新闻
阅读最新信息
目录
浏览所有的DOTmed用户
DOTmed上的伦理
查看我们的伦理计划
金子分开供营商节目
接收PH要求
金子服务经销商节目
接收请求
提供保健服务者
查看所有的HCP(简称医疗保健提供商)的工具
工作/训练
查找/申请工作
Parts Hunter +EasyPay
获取配件报价
最近证明
查看最近通过认证的用户
最近额定
查看最近通过认证的用户
出租中央
租用设备优惠
卖设备/配件
得到最划算
服务技术员论坛
查找帮助和建议
简单的征求建议书
获取设备报价
真正商业展览
查找对设备的服务
对这个站点的通入和用途是受期限和条件我们支配 法律公告 & 保密性通知
物产和业主对 DOTmed.com,公司 Copyright ©2001-2018 DOTmed.com, Inc.
版权所有