News tagged with radiation oncology
A receptor protein suppresses local invasion and metastasis of breast cancer cells, the most lethal aspect of the disease, according to a research team headed by scientists from The University of Texas MD Anderson Cancer ...
Cancer Sep 25, 2012 | 5 / 5 (1) | 0 |
Ohio State University cancer researchers have identified molecules in the bloodstream that might accurately gauge the likelihood of radiation illness after exposure to ionizing radiation.
Cancer Feb 25, 2013 | 5 / 5 (1) | 0 |
(HealthDay)—Men with prostate cancer taking the drug finasteride (Proscar) don't survive longer than similar men not taking the drug, a new study finds.
Cancer Feb 15, 2013 | not rated yet | 0 |
New technique sheds light on RNA: Researchers develop method that could enhance gene sequencing data
Researchers at the University of Michigan Comprehensive Cancer Center have developed a technique to better understand why RNA may be different in cancer cells than in normal cells. The technique will bring new depth of understanding ...
Medical research Jan 28, 2013 | 5 / 5 (1) | 0 |
Patients with non-small-cell lung cancer survive longer if they are taking beta-blockers while receiving radiotherapy, according to a study of 722 patients published in the cancer journal Annals of Oncology today.
Cancer Jan 08, 2013 | not rated yet | 0 |
Elevated levels of Cyclin D1b could function as a novel biomarker of lethal metastatic disease in prostate cancer patients, according to a pre-clinical study published ahead of print on December 21 in the Journal of Clinical In ...
Cancer Dec 21, 2012 | 5 / 5 (1) | 0 |
There is no difference between proton radiotherapy (PRT) and intensity-modulated radiotherapy (IMRT) when comparing the toxicity among Medicare beneficiary patients with prostate cancer at 12 months post-treatment according ...
Cancer Dec 17, 2012 | not rated yet | 0 |
A pathway called the "Unfolded Protein Response," or UPR, a cell's way of responding to unfolded and misfolded proteins, helps tumor cells escape programmed cell death during the development of lymphoma.
Cancer Nov 21, 2012 | not rated yet | 0 |
Resveratrol, a compound found commonly in grape skins and red wine, has been shown to have several beneficial effects on human health, including cardiovascular health and stroke prevention. Now, a University ...
Cancer Nov 10, 2012 | 5 / 5 (6) | 5 |
heralded for its low complication rates—actually results in more complications than whole-breast radiation one year after treatment, Yale School of Medicine researchers report in the October issue of the Journal of Clinical On ...
Cancer Oct 22, 2012 | not rated yet | 0 |
Oropharyngeal cancer patients with human papillomavirus have more robust response to radiation therapy
(Medical Xpress)—UC Davis cancer researchers have discovered significant differences in radiation-therapy response among patients with oropharyngeal cancer depending on whether they carry the human papillomavirus (HPV), ...
Cancer Sep 25, 2012 | not rated yet | 0 |
Poly (ADP-Ribose) polymerase (PARP) inhibitors, shown to have clinical activity when used alone in women with familial breast and ovarian cancers linked to BRCA mutations, may be a novel treatment strategy in women with HER2-positive ...
Cancer Sep 17, 2012 | not rated yet | 0 |
(HealthDay)—Stop-and-start hormone-deprivation therapy for localized prostate cancer doesn't shorten overall survival compared to continuous treatments, and yields fewer side effects such as impotence and ...
Cancer Sep 05, 2012 | not rated yet | 0 |
A recent Phase I/II clinical trial has shown that a new combination of radiation therapies developed at Virginia Commonwealth University Massey Cancer Center escalates radiation doses to safely and effectively treat prostate ...
Cancer Jun 26, 2012 | not rated yet | 0 |
(HealthDay) -- Patients with esophageal cancer who receive chemotherapy and radiation before surgery have better outcomes, Dutch researchers report.
Cancer May 30, 2012 | 5 / 5 (1) | 1 |
Radiation therapy (also radiotherapy or radiation oncology, sometimes abbreviated to XRT) is the medical use of ionizing radiation as part of cancer treatment to control malignant cells (not to be confused with radiology, the use of radiation in medical imaging and diagnosis). Radiotherapy may be used for curative or adjuvant cancer treatment. It is used as palliative treatment (where cure is not possible and the aim is for local disease control or symptomatic relief) or as therapeutic treatment (where the therapy has survival benefit and it can be curative). Total body irradiation (TBI) is a radiotherapy technique used to prepare the body to receive a bone marrow transplant. Radiotherapy has several applications in non-malignant conditions, such as the treatment of trigeminal neuralgia, severe thyroid eye disease, pterygium, pigmented villonodular synovitis, prevention of keloid scar growth, and prevention of heterotopic ossification. The use of radiotherapy in non-malignant conditions is limited partly by worries about the risk of radiation-induced cancers.
Radiotherapy is used for the treatment of malignant tumors (cancer), and may be used as the primary therapy. It is also common to combine radiotherapy with surgery, chemotherapy, hormone therapy or some mixture of the three. Most common cancer types can be treated with radiotherapy in some way. The precise treatment intent (curative, adjuvant, neoadjuvant, therapeutic, or palliative) will depend on the tumour type, location, and stage, as well as the general health of the patient.
Radiation therapy is commonly applied to the cancerous tumour. The radiation fields may also include the draining lymph nodes if they are clinically or radiologically involved with tumour, or if there is thought to be a risk of subclinical malignant spread. It is necessary to include a margin of normal tissue around the tumour to allow for uncertainties in daily set-up and internal tumor motion. These uncertainties can be caused by internal movement (for example, respiration and bladder filling) and movement of external skin marks relative to the tumour position.
To spare normal tissues (such as skin or organs which radiation must pass through in order to treat the tumour), shaped radiation beams are aimed from several angles of exposure to intersect at the tumour, providing a much larger absorbed dose there than in the surrounding, healthy tissue.
For more information about Radiation therapy, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.