Sentences with phrase «of radiation beamed»

The idea of having a strong dose of radiation beamed at your chest is no one's idea of a good time, but as treatment goes, radiation is relatively painless and side effects are fewer and more manageable than ever before.

The breath - hold technique allows doctors to monitor a patient's breath for the position that shifts the heart out of the range of the radiation beam.

IGRT integrates advanced imaging during treatment to help fine - tune the placement of radiation beams.

Not exact matches

To that goal, Smith is launching a radiation study looking at two - to - two - and - a-half weeks of treatment of external beam treating a large area surrounding the tumor bed.

CyberKnife and other noninvasive radiosurgery systems are producing ever more accurate energy beams, raising the possibility of extending the use of potentially lethal radiation to fight Parkinson's, epilepsy and other afflictions

For this theory to work, the beams released by black holes would have to have strong, self - generated magnetic fields and the rotation of particles around the fields would then give off powerful bursts of gamma ray radiation.

Among the advances that have already been made are linear accelerators that generate higher - energy radiation beams, and more versatile patient tables that enable radiation doses to be delivered to the tumor from a variety of angles and directions.

Despite complications sometimes more severe than with standard radiation therapy — and costs that are much higher for taxpayers, patients and insurers — proton beam therapy is heavily marketed for treatment of prostate cancer.

This technique uses powerful pulses of electromagnetic radiation beamed into a person's brain to jam or excite particular brain circuits.

The researchers observed FRB 150807 while monitoring a nearby pulsar — a rotating neutron star that emits a beam of radio waves and other electromagnetic radiation — in our galaxy using the Parkes radio telescope in Australia.

The smallest cough or twitch can undermine the precision; moving even a centimeter can undo weeks of a radiation oncologist's preparations and calculations, dispatching the beam in the wrong direction.

Dead stars known as pulsars (one illustrated above) emit beams of radiation that sweep past Earth at regular intervals.

Conventional radiation with photons gave way to intensity - modulated radiation therapy, or IMRT, in which more precise beams of photons could be moved dozens or hundreds of times with varying intensities, attacking tumors in three dimensions with safer high doses.

And if this beam is also focused into a speck with a three millimeter diameter, then we get an intensity of light an order higher than the intensity of light close to the sun's surface, which has a radiation power of about 20 gigawatts a square meter.

At two years after treatment, more than 57 percent of men who had normal sexual function prior to treatment reported poor sexual function after surgery, compared with 27 percent who reported poor sexual function after external beam radiation, 34 percent after brachytherapy, and 25 percent after active surveillance.

Previously, studies have consistently demonstrated that conventionally fractionated high dose external beam radiation therapy (CRT), consisting of daily treatment for two months, decreases prostate cancer recurrence, and improves metastasis - free survival.

«These findings suggest that many men with intermediate risk prostate cancer can be well managed with seed implant alone and do not require the addition of external beam radiation,» said Bradley Prestidge, MD, lead author of the study and Medical Director of the Bon Secours Cancer Institute at DePaul Medical Center in Norfolk, Virginia.

During whole - brain radiation therapy, beams of radiation cover the entire brain.

A gamma ray burst is thought to emerge when jets of hot matter moving at near — light - speed shoot out along the rotational axis of the newborn black hole, beaming radiation into space like a lighthouse.

The narrow beam means there is less «overspill» of radiation than with existing omnidirectional antennas.

The second visualization was a movie captured at 23,000 - times magnification that revealed the movements of a group of nanoparticles reacting to an electron beam, which mimics the effects of the infrared radiation used in cancer therapies.

The downside of this technique is that the repeated electron beam radiation can progressively damage the sample.

The researchers compared the images from the first and last scans to verify that the tungsten had not been damaged by the radiation, thanks to the electron beam energy being kept below the radiation damage threshold of tungsten.

By coupling a nanostring to an optical waveguide, Kippenberg's lab recently demonstrated the ability to «hear» the gentle sound of photons flowing in a laser beam (each imparting a tiny radiation pressure force to the string).

As a pulsar spins, it emits a narrow stream of radiation, like the beam from a lighthouse; astronomers detect it only if the beam happens to sweep past Earth.

The other 200 patients were randomised to dose - escalated external beam radiation therapy (DE-EBRT) and received an additional 32 Gy of external beam radiation to achieve a total prostate dose of 78 Gy.

A form of external beam radiation therapy that delivers a few very large fractions of radiation using new high precision technology.

Known as pulsars, the dead stars emit beams of radiation that sweep past Earth at regular intervals, like the rotating beams from a lighthouse.

A new microscopic laser uses a sandwich of semiconductors to generate a beam of t - rays, a rarely used — but much coveted — type of radiation.

All these accessories, plus a model rifle, were tagged with retroreflectors, which can reflect a beam of radiation back to its source regardless of the angle of incidence.

They zapped a tiny plastic pellet with 12 laser beams fired simultaneously and allowed some of the resulting radiation to blast a pellet of silicon, a common element in accretion disks.

It is not only in hypothetical new computers that it's important to be able to control beams of radiation precisely with the newly developed light turning mechanism: terahertz radiation is used today for many purposes, for example for imaging methods in airport security technology.

Bright beams of radiation shine from the stars» magnetic poles.

These extreme objects advertise their presence with intense beams of radiation, sweeping through the sky like cosmic lighthouses, with a regularity rivaling Earth's best clocks.

Dwight Duston, director of science and technology at the Pentagon's Star Wars office, says the free - electron laser, once trumpeted as a weapon for destroying incoming enemy missiles, could be used to produce a beam of high - quality X-rays that would reduce a woman's exposure to radiation during mammography.

DARPA is looking at more efficient technologies, like fiber lasers and liquid lasers, which could lead to smaller, more compact devices, while the Navy is researching a Free Electron Laser, an experimental technology that uses high - speed electrons to generate an extremely powerful focused beam of radiation.

Neutron star mergers like this produce gamma ray bursts — beams of radiation that can destroy planets or make them inhospitable to life.

Proton beam therapy has the ability to deliver high doses of radiation directly to a tumour site with very little radiation being absorbed into healthy tissue.

To test their ideas about why the central region of M77 beams massive amounts of radiation, a team of researchers at the National Astronomical Observatory of Japan and the Open University of Japan used the Subaru Telescope to study M77.

The effect can be demonstrated by sending terahertz radiation through the material: The polarization of the terahertz beam is changed if the multiferroic material exhibits magnetic ordering.

To study such things as the structures of crystals and reactions on the surfaces of semiconductors, scientists now demand more intense beams of radiation than ever before.

The tree - like formations in this molten salt formed under the high - radiation of a transmission electron microscope beam; the jet of ions from the material could serve as a thruster for a nanosatellite

Material falling from the exploded star onto the compact companion would have been heated and blasted back into space in two narrow jets, along with a beam of radiation.

The problem stems partly from the amount of physician time brachytherapy requires: It takes 80 + percent more personnel time to administer brachytherapy than it does to deliver the increasingly popular alternative, external beam radiation.

Focusing the machine's full output into a spot of only 100 nanometers in size, the team generated an X-ray beam with intensity equivalent to all of the sun's radiation that is striking Earth's surface but concentrated in an area with the diameter of a human hair.

Then he set up a plasma lamp to fire beams of ultraviolet light at the chamber, much like the radiation present in planet - and star - forming regions of dust clouds.

Using premier beams of ultraviolet light at the ALS, a DOE national user facility for synchrotron radiation, the collaboration has reported the first demonstration of high - temperature superconductivity in the surface of a topological insulator — a unique class of advanced materials that are electrically insulating on the inside but conducting on the surface.

As these accelerated electrons stream outward, they produce beams of radiation that we receive every time the beam crosses our line of sight, like a lighthouse.

This tight synchronization of the beams at different energies implies that the bright radiation observed in the multi-wavelength spectrum is produced altogether in a rather small region.

All of the patients in the trial underwent between six and nine weeks of external beam radiation therapy for prostate cancer.