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Topic: Proton therapy

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	FOXNews.com - Proton Therapy Used More to Treat Cancer - Health News \| Current Health News \| Medical News
		But he said studies have shown proton therapy allows a higher level of radiation on the tumor, with less damage to healthy tissue and fewer side effects, such as loss of appetite, diarrhea and headaches."That was the breakthrough, what changed my mind,"he said.
		Proton therapy has been around since the mid-1950s but was done mostly at research facilities, according to the National Association for Proton Therapy.
		But proton therapy, which is covered by Medicare and most insurance companies, is about three times more expensive than traditional radiation, in part because of the cost of the facilities, Cox said.
	www.foxnews.com /wires/2006Aug22/0,4670,ProtonTherapy,00.html (863 words)

	Proton Therapy Takes Aim in Prostate Cancer Battler
		For the past seven years, proton therapy, a superior type of radiation therapy that permits a more precise delivery of a higher dose of tumor destroying energy, has been successfully used at the Loma Linda University Proton Treatment Center in Southern California.
		Proton therapy is often referred to as "bloodless surgery" since it has a surgical precision that leaves vital organs and healthy tissue near the tumor unaffected, allowing for a speedier recovery for most of the patients.
		Proton therapy is being used in more than 20 cancer sites, and is also being used to treat other diseases.
	www.proton-therapy.org /prostate.htm (622 words)

	PROTON THERAPY - The National Association for Proton Therapy (NAPT) Proton Beam Therapy, Protons and Prostate Cancer
		We are the resource for the most recent proton treatment studies and patient outcomes, as well as announcements regarding new patient protocols or clinical developments in the proton beam radiation field.
		Since 1954, when proton therapy was first introduced for human treatment, about 41,000 patients had been treated with proton beam radiation at various research facilities around the world.
		Future proton centers include Hampton University’s proton facility to be completed by late 2008 and the University of Pennsylvania’s plans for a proton therapy facility in Philadelphia.
	www.proton-therapy.org (657 words)

	RSNA MEETING: Proton Beam Therapy Significantly Improves Cancer Control (Site not responding. Last check: 2007-10-14)
		In a study of 645 men, proton beam therapy was shown to be as effective in controlling or curing cancer as surgical removal of the prostate, at the four-year post-treatment mark.
		Proton beams achieved local control of cancer in 45 percent of 220 patients with chordoma of the base of the skull compared to 30 percent control with standard radiation.
		Proton beams are produced by a cyclotron or a synchrotron, a circular particle accelerator in which harged particles are propelled by an alternating electrical field in a constant magnetic field.
	www.pslgroup.com /DG/4b22e.htm (1017 words)

	Will we need proton therapy in the future?
		Protons are expected to produce superior results for the treatment of large tumors of complex shape, where a significant reduction of the dose outside of the target volume is clinically desirable.
		The major disadvantage of proton therapy is the large size of the accelerator and of the beam lines needed for the transport of the beam.
		The equipment of a proton therapy center is more expensive, of the order of 25-40 M$ (depending on the number of treatment rooms used in the facility), than the 3-5 millions needed for the corresponding units in a modern radiotherapy department.
	www.europhysicsnews.com /full/06/article6/article6.html (4978 words)

	Jill's House: Proton Therapy
		Proton therapy is a type of radiation treatment similar to standard radiation treatments such as gamma knife radiation, x-ray therapy, brachytherapy, radioactive seed implantation, and so on.
		Protons are sub-atomic particles that behave like light waves when they travel at speeds close to the speed of light.
		Because proton therapy can deliver high doses of radiation to a tumor without damaging healthy tissue, it is used most often for tumors that are near critical tissues such as optic nerve, functional centers of the brain, spinal cord, rectum, intestine, heart, and urinary tract.
	www.indiana.edu /~jshouse/proton.html (766 words)

	Proton Therapy Cancer Treatment radiation therapy
		In Proton Therapy cancer treatment, the Bragg peak can be placed at any depth in the tissue, according to the depth of the tumor.
		The goal in radiation therapy is to minimize damage to healthy tissue by minimizing the tissue exposed in the entrance and exit doses.
		Radiation therapy is used in the treatment of approximately half of all cancer cases.
	www.floridaproton.org /cancer-treatment/terminology.html (665 words)

	Proton Therapy (Site not responding. Last check: 2007-10-14)
		Protons also release most of their destructive energy just before they stop, so healthy cells in front of the tumor get less radiation than the cancer cells do.
		Proton therapy's accuracy means that doctors can train high doses of proton radiation on tumors without worrying about causing collateral damage.
		Proton radiation is not a miracle cure--in fact, it's limited to treating localized cancers that have not spread throughout the body.
	amos.indiana.edu /library/scripts/protontherapy.html (244 words)

	Proton Therapy Center Opens To Patients
		Proton therapy is the most precise form of radiation treatment available for some tumors, according to James D. Cox, M.D., head of the Division of Radiation Oncology at M. Anderson.
		Protons differ from traditional x-ray treatment because they deposit the highest dose of energy when they come to a stop in the body, and have a very low dose of energy when they enter and have no dose as it exits the body.
		After many cycles, the protons reach the energy required by a specific treatment plan and are extracted from the ring into the beam transport line, which then directs the proton beam to the patient in a treatment room.
	www.medicalnewstoday.com /medicalnews.php?newsid=46788 (958 words)

	Francis H. Burr Proton Therapy Center at the Massachusetts General Hospital Cancer Center Provides Radiation Therapy ...
		The Francis H. Burr Proton Therapy Center, located on the main hospital campus of the Massachusetts General Hospital (MGH), represents the forefront of technological advancement in radiation therapy.
		The construction of the proton therapy facility was jointly funded by the hospital and the National Cancer Institute to meet the increasing medical demand for high precision radiation therapy provided by proton therapy.
		The proton radiation therapy program builds on more than forty years of pioneering work and experience gained by the physicians, physicists, and clinical support personnel at Harvard University's Cyclotron Laboratory where more than nine thousand patients were treated with proton therapy from 1961 to it's closing in 2002.
	www.mgh.harvard.edu /cancer/about/providers/radiation/proton/index.asp (321 words)

	FOXNews.com - New Proton Therapy Center Opens in Houston - Health News \| Current Health News \| Medical News
		It is the largest of the nation's four such facilities that treat cancer by targeting protons narrowly on the tumor itself, sparing the healthy tissue that with traditional X-ray radiation therapy is blasted along with the cancer cells.
		The protons, which are stripped from the nucleus of hydrogen atoms in a tubular device called an injector, are sent to a compact particle accelerator _ actually a ring of magnets about 20 feet in diameter _ called a synchrotron.
		Cox said proton therapy can be used to treat cancers of the prostate, eye, lung, brain, head and neck and possibly tumors in the liver.
	www.foxnews.com /wires/2006Jul18/0,4670,ProtonTherapyCenter,00.html (901 words)

	M. D. Anderson Cancer Center - Proton Therapy Center - Proton Therapy, Cancer Radiation Therapy, Proton Beam Therapy, ...
		Proton therapy allows for the most aggressive cancer therapy possible, while keeping the harm to healthy tissue and side effects to a minimum.
		The Proton Therapy Center is a 94,000 square foot facility including three treatment rooms with gantries that administer proton beams from 360-degree angles, a fixed-beam treatment room, 16 exam rooms and a simulation suite with positron emission tomography, computed tomography, and magnetic resonance imaging for accurate treatment planning.
		The Proton Therapy Center is part of M. Anderson’s Red and Charline McCombs Institute for the Early Detection and Treatment of Cancer, six unique centers dedicated to Making Cancer History® through genomics, proteomics, screening, diagnostic imaging and biotechnology.
	www.mdanderson.org /care_centers/radiationonco/ptc (299 words)

	Proton therapy gaining ground as cancer treatment (Site not responding. Last check: 2007-10-14)
		It is the largest of the four U.S. centres that treat cancer by targeting proton beams narrowly on the tumour itself, sparing the healthy tissue that with typical X-ray radiation would be blasted along with the cancer cells.
		But he said studies have shown proton therapy allows a higher level of radiation on the tumour, with less damage to healthy tissue and fewer side-effects, such as loss of appetite, diarrhea and headaches.
		But proton therapy, which is covered in the U.S. by Medicare and most insurance companies, is about three times more expensive than traditional radiation, in part because of the cost of the facilities, Cox said.
	www.cbc.ca /cp/health/060823/x082310.html (804 words)

	Cancer patient receives first proton therapy treatment
		In contrast, protons enter the body at a low energy level and release most of their energy upon impact with the tumor, so there is no "exit" dosage of radiation to healthy tissue.
		Florida Proton, www.floridaproton.org, is one of only five proton therapy centers in the country and is affiliated with the UF College of Medicine and UF Shands Cancer Center, a national leader in cancer treatment and research.
		Proton therapy has been used to treat cancer for decades in a limited number of treatment centers worldwide; an estimated 40,000 people worldwide have received proton therapy.
	www.news-medical.net /?id=19454 (978 words)

	How Proton Treatment Works
		The power of protons is that higher doses of radiation can be used to control and manage cancer while significantly reducing damage to healthy tissue and vital organs.
		The major advantage of proton treatment over conventional radiation, however, is that the energy distribution of protons can be directed and deposited in tissue volumes designated by the physicians-in a three-dimensional pattern from each beam used.
		Radiation therapy requires that conventional x-rays be delivered into the body in total doses sufficient to assure that enough ionization events occur to damage all the cancer cells.
	www.proton-therapy.org /howit.htm (692 words)

	prostate proton cancer loma linda (Site not responding. Last check: 2007-10-14)
		External beam refers to the fact that the radiation therapy is generated and administered by a machine outside of the patients body, as opposed to implants which either temporarily or permanently place radioactive sources within the body.
		Conformal proton treatment is often used in conjunction with x-ray therapy in order to "boost" sites of gross disease and allow irradiation of a large volume of tissue to doses sufficient to sterilize microscopic cancer.
		It is impossible to deliver precision therapy without having 1) a three-dimensional reconstruction of the tumor and its relationship to surrounding structures and 2) a reproducible treatment position to minimize movement errors (sometimes referred to as "geographic miss").
	www.protons.com /ROSSI1.HTM (2022 words)

	Proton Therapy
		In standard proton therapy, a proton beam entering the treatment delivery nozzle is scattered into a broad, uniform beam and shaped to conform to the tumor.
		With intensity-modulated proton therapy, or IMPT, a single, narrow proton beam about a centimeter in diameter is swept across the tumor from multiple directions, depositing the radiation dose, mostly near the end of the beam’s range.
		Because, on average, protons deliver half the dose to normal tissues that photons deliver, it may be possible to give a more intense regimen of chemotherapy in conjunction with proton therapy, with fewer side effects than can be expected with chemotherapy combined with photon therapy.
	www2.mdanderson.org /depts/oncolog/articles/04/7-8-julaug/7-8-04-1.html (1358 words)

	Glossary of radiation and proton therapy terms
		For example, protons are often used with X rays to boost the radiation dose to specific parts of a treatment volume.
		Conformal radiation therapy: Radiation that is shaped, or "conformed," to the shape of a tumor in all three dimensions.
		In proton radiation therapy, final patient alignment is performed by adjusting the motorized table with respect to the proton nozzle so that the treatment position matches the position the patient was in when the planning CT scans were taken.
	www.llu.edu /proton/patient/glossary.html (1987 words)

	Proton therapy - Wikipedia, the free encyclopedia
		Proton therapy is of interest because of its ability to accurately target and kill tumors, both near the surface and deep seated within the body, while minimizing damage to the surrounding tissues.
		Historically, one area where proton therapy had considerable early successful application was in treating choroidal malignant melanomas, a type of eye cancer for which the only known treatment was enucleation (removal of the eye).
		Proton therapy for ocular tumors is also available in Sacramento at the UC Davis Proton Facility, a facility operated exclusively by the UC San Francisco Department of Radiation Oncology.
	en.wikipedia.org /wiki/Proton_therapy (1118 words)

	Charged-Particle (Proton or Helium Ion) Radiation Therapy
		Charged-particle beams consisting of protons or helium ions are a type of particulate radiation therapy that contrast with conventional electromagnetic (i.e., photon) radiation therapy due to the unique properties of minimal scatter as the particulate beams pass through the tissue, and deposition of the ionizing energy at a precise depth (i.e., the Bragg Peak).
		Postoperative therapy (with or without conventional high-energy x-rays) in patients who have undergone biopsy or partial resection of the chordoma or low-grade (I or II) chondrosarcoma of the basisphenoid region (skull-base chordoma or chondrosarcoma) or cervical spine.
		Given the evolving acceptance of proton beam therapy as a standard of care and biochemical control as an accepted outcome measure of prostate cancer treatments, the policy is changed to consider proton beam therapy as a medically appropriate treatment option for men with clinically localized prostate cancer.
	www.regence.com /trgmedpol/medicine/med49.html (2162 words)

	Hadron Therapy at iThemba (Site not responding. Last check: 2007-10-14)
		The horizontal 200 MeV proton therapy facility is used mainly for irradiations of intracranial and head and neck lesions.
		Proton dosimetry and radiobiological intercomparisons have also been undertaken with various overseas centres and the results obtained were highly satisfactory.
		Since the positions of the video cameras and the direction of the proton beam are accurately known in space, it is possible to calculate the position of the centre of each of these reflective markers and hence the position of the reference point in the treatment volume, relative to the beam axis.
	www.medrad.nac.ac.za /nhad.htm (1631 words)

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