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Related Concept Videos

Radiation: Applications01:17

Radiation: Applications

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.
The average...

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Stereotactic Radiosurgery for Gynecologic Cancer
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Published on: April 17, 2012

Initial experience with the eXtend System: a relocatable frame system for multiple-session gamma knife radiosurgery.

Faisal T Sayer1, Jonathan H Sherman, Chun-Po Yen

  • 1Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA.

World Neurosurgery
|June 28, 2011
PubMed
Summary
This summary is machine-generated.

The Elekta eXtend System enables multi-fraction Gamma Knife radiosurgery (GKRS) with high accuracy. This relocatable frame system allows for precise patient positioning across multiple treatment sessions, expanding GKRS applications.

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Area of Science:

  • Neurosurgery
  • Radiation Oncology
  • Medical Imaging

Background:

  • Gamma Knife radiosurgery (GKRS) is traditionally a single-fraction treatment.
  • Expanding GKRS to multi-fraction or serial multi-session techniques offers new therapeutic possibilities.

Purpose of the Study:

  • To evaluate the initial clinical experience with the Elekta eXtend System.
  • To assess the system's suitability for multi-fraction or serial radiosurgery.

Main Methods:

  • The Elekta eXtend System includes a carbon-fiber frame, vacuum cushion, and surveillance system.
  • Patient setup involves dental impressions, stereotactic CT, and MRI co-registration.
  • High-precision probes and vacuum surveillance ensure accurate patient positioning and safety.

Main Results:

  • Four patients were treated using the eXtend System.
  • All prescribed treatment fractions were successfully completed.
  • Repositioning errors were consistently below 1 mm without repeat imaging.

Conclusions:

  • The eXtend System successfully facilitates multi-fraction GKRS.
  • It provides accurate, non-invasive head fixation for serial treatments.
  • This system broadens the indications for GKRS, enabling complex treatment plans.