Radiation For Ovarian Cancer Math
Low dose fraction radiation therapy ldfrt the total dose of low dose radiation divided into smaller doses called fractions can improve the activity of the.
Radiation for ovarian cancer math. External radiation therapy is much like getting an x ray but the radiation is stronger. The duration of delivery is only for a few minutes five days a week for several weeks. There was a suggestion of heterogeneity in radiation effects p 0 08 for type 1 err gy 0 32 95 ci. Radiation dose was positively although not significantly associated with risk of total ovarian cancer err gy 0 30 95 confidence interval ci.
A machine focuses the radiation on the area affected by the cancer. Using a machine called a linear accelerator mro radiation oncologists direct high energy radiation beams to the exact location of the cancer. For example whole pelvic radiation is largely ineffective because ovarian cancer is rarely confined to the pelvis. Each treatment lasts only a few minutes but the setup time getting you into place for treatment usually takes longer.
Ovarian cancer is sensitive to radiation and abdominal radiotherapy is an effective adjuvant radiotherapy for ovarian cancer but the low tolerance of the up abdominal organs limits the application of convention radiation. Firstly ebrt is the primary type of radiation therapy for the treatment of ovarian cancer. Treatments are given 5 days a week for several weeks. 0 08 to 4 16.
0 32 to 0 88 and type 2 cancers err gy 1 24 95 ci. This is the most common type of radiation therapy for women with ovarian cancer. Although ovarian cancer is considered to be radiosensitive radiation therapy options have been limited the authors noted. External beam radiation therapy ebrt is the most common form of ovarian cancer radiation treatment.
Brachytherapy also known as internal radiation is also used for ovarian cancer in rare cases. Radiation therapy for ovarian cancer has therefore been predominantly confined to the palliative setting used for symptom control or to treat localized metastatic disease. Whole abdominal radiotherapy was used in the pre chemotherapy era but toxicity was high particularly with wide field irradiation. Several retrospective studies have demonstrated the utility of targeted involved field radiotherapy to doses of 45 60 gy given in 1 8 2 gy fractions 54 57.