A radiation may be defined as that kind of an energy that comes from a particular source and which explores through the space which leads to the penetration of various materials consisting of light, radio and different kinds of microwaves are that sort of a radiation that are totally nonionizing.
How long does radiation last depends upon the different kinds of radiation treatments that are given to an individual suffering from cancer.Therefore, it is extremely important for a radiologist, to determine what kind of a treatment should be given to the patient. The intention of the treatment may either be palliative or a definitive treatment. Therefore, how long does radiation last may also be depended upon the kind of palliative treatments given to an individual which also consists of short courses for about 2-3 weeks not because of the fact that the dosage of radiation given to an individual might be high but because of the fact that the total dosage of radiation might be lower depending upon the nature of the condition of an individual as well.
Therefore, when palliative radiation is used when treating a cancer patient, it must be noted that a palliative kind of a radiation occurs when the cancer has spread into the body of a cancer patient. A palliative kind of a radiation does not give a guarantee that the cancer may be cured, but still a palliative radiation is treatable if not curable.
How long does radiation last may also be dependent on the definitive treatment given to a cancer patient, especially when the cancer patient is in his/her last stage.However, a definitive kind of a radiation may be given to a cancer patient depending upon the type of cancer as well.Therefore, a definitive kind of a radiation may take upto nine weeks not because of the fact that the radiation dosage per individual is higher but also because of the fact that the radiation level is lower because the total dosage of radiation is also higher.
A radiation may be given to a cancer patient five days a week. However, some doctors recommend radiation twice a day as well. If radiation is given twice a day to a cancer patient, then atleast two radiation treatments would be given to that cancer patient with atleast six hours apart from each radiation treatment given to a patient. How long does radiation last would also depend upon many different kinds of factors such as technological factors, dosage per fraction given to an individual and the number of different kinds of fields required to treat a target point of the cancer patient as well and last but not the least, the energy and type of radiation required to treat the cancer of a patient also plays a very important role.
In addition, how long does radiation last would also depend upon the internal radiation given to a cancer patient. For instance, when radiation treatments are given to gynaeocological cancers, atleast 2 to 6 treatments are given to that patient which are given in one or two weeks apart. Similarly, a radiation treatment given to a thyroid cancer patient would require only one treatment.