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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
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Author Spotlight: Improving Radiation Therapy Access with Radiation Planning Assistant
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Technical note: real-time web-based wireless visual guidance system for radiotherapy.

Danny Lee1, Siyong Kim1, Jatinder R Palta1

  • 1Department of Radiation Oncology, Virginia Commonwealth University, 401 College Street, P.O. Box 980058, Richmond, VA, 23298-0058, USA.

Australasian Physical & Engineering Sciences in Medicine
|April 21, 2017
PubMed
Summary
This summary is machine-generated.

A new wireless visual guidance system improves patient motion management in radiotherapy. This system offers real-time visual feedback, reducing clutter and enhancing device usability in clinical settings.

Keywords:
Audiovisual-aidedInteractive motion managementRespiratory guidanceWeb-based visual displayWireless visual guidance

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Area of Science:

  • Medical Physics
  • Radiotherapy Technology
  • Wireless Communication Systems

Background:

  • Hard-wired audio-visual systems for patient motion management are often cumbersome in clinical practice.
  • There is a need for more flexible and user-friendly real-time visual guidance systems in radiotherapy.

Purpose of the Study:

  • To develop and evaluate a Web-based wireless visual guidance system.
  • To mitigate the limitations of existing hard-wired patient interactive motion management systems.
  • To assess the performance of the wireless system in terms of network latency and frame rate.

Main Methods:

  • A Web-based wireless visual display system was created to mirror an existing respiratory-motion management system's display.
  • Active Breathing Coordinator (ABC) trace data was captured and transmitted wirelessly to various web clients (laptop, iPad, iPhone).
  • Network latency and frame rate were quantified for different devices, including performance for virtual reality (VR) goggles.

Main Results:

  • Network latency for the visual display averaged approximately 100 ms across devices.
  • Frame rates achieved were 14.0 fps on a laptop, 9.2 fps on an iPad mini 2, and 11.2 fps on an iPhone 6.
  • Successful VR display was demonstrated on an iPhone 6 with 100 ms latency and 11.2 fps, maintaining high network security.

Conclusions:

  • The Web-based wireless visual guidance system shows promise for clinical motion management.
  • This technology can reduce system clutter, decrease space requirements, and enable more dynamic use of medical devices.
  • The system offers a viable alternative to traditional wired setups, enhancing real-time visual feedback in radiotherapy treatment vaults.