News tagged with radiotherapy
Discovery of circadian clock in mice hair reveals period of time when damage from radiotherapy can be quickly repaired
Discovering that mouse hair has a circadian clock - a 24-hour cycle of growth followed by restorative repair - researchers suspect that hair loss in humans from toxic cancer radiotherapy and chemotherapy ...
Medical research May 20, 2013 | 5 / 5 (2) | 1 |
Intensity-modulated radiation therapy has become the most commonly used type of radiation in prostate cancer, but research from the University of North Carolina suggests that the therapy may not be more effective than older, ...
Cancer May 20, 2013 | not rated yet | 0
The diabetes drug metformin slows the growth of lung cancer cells and makes them more likely to be killed by radiotherapy, according to a study published in the British Journal of Cancer today.
Cancer May 01, 2013 | 5 / 5 (2) | 0
(HealthDay)—For patients with stage I and II primary tonsil carcinoma, radiotherapy after tonsillectomy is associated with improved overall survival (OS) and disease-specific survival (DSS), compared with ...
Surgery Apr 19, 2013 | not rated yet | 0
One in 25,000 people worldwide is affected by neurofibromatosis type 2 (NF2), a condition where the loss of a tumour suppressor called Merlin results in multiple tumours in the brain and nervous system.
Cancer Jan 14, 2013 | not rated yet | 0 |
Researchers at the University of Gothenburg have discovered that a chemical can trigger the maturation of small eggs to healthy, mature eggs, a process that could give more women the chance of successful IVF treatment in ...
Obstetrics & gynaecology Sep 24, 2012 | not rated yet | 0
Researchers at the University of Warwick and The Royal Marsden NHS Foundation Trust have completed a study that may lead to clinicians being able to more accurately predict which patients will suffer from the side effects ...
Medical research Feb 21, 2013 | not rated yet | 0 |
(Medical Xpress)—A study has found that many patients receiving a potentially life-saving drug for the childhood cancer neuroblastoma are potentially being under-dosed. Every year in the UK approximately 100 children aged ...
Cancer Jan 18, 2013 | not rated yet | 0
When treating prostate cancer with radiotherapy, knowing the prostate cancer position is critical to accurately targeting the radiation beam to avoid missing the tumour and irradiating healthy tissue. Prostate cancer patients ...
Cancer Aug 06, 2012 | 5 / 5 (1) | 0
(Medical Xpress)—Bowel cancer rates among men have risen by nearly 30 per cent in the last 35 years, while women have seen an increase of only six per cent, according to a new report from Cancer Research UK.
Cancer Apr 02, 2013 | 5 / 5 (1) | 0
(Medical Xpress)—Older bladder cancer patients are less likely than younger patients to receive treatments intended to cure their disease such as surgery to remove the bladder or radiotherapy. But this difference cannot ...
Cancer Apr 17, 2013 | not rated yet | 0
New research published in BioMed Central's open access journal BMC Medicine reassessing clinical data from trials, which investigate ways of treating side effects of therapy for prostate cancer, finds that tamoxifen, an ant ...
Cancer Aug 27, 2012 | 4.5 / 5 (2) | 0
(Medical Xpress)—In a paper published in the Journal of Neuro-oncology, researchers have found that that patients with benign brain tumours experience greater distress than those with malignant tumours before ...
Cancer Oct 22, 2012 | not rated yet | 0 |
Researchers from the Centre for Genomic Regulation (CRG) in Barcelona reprogramme lymphoma and leukaemia cells to halt their malignancy. Resulting cells remain benign even when no longer subjected to treatment and reduce ...
Cancer Apr 03, 2013 | 5 / 5 (4) | 0
Scientists have identified a molecular 'flag' in women with breast cancer who do not respond or have become resistant to the hormone drug tamoxifen.
Cancer Oct 31, 2012 | 4 / 5 (1) | 0 |
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.