The radiation therapy in the uterine cervix cancer uses in principle outside irradiation (another name outside the body irradiation) and irradiation in the cavity together and performs it.
At first the outside irradiation is performed by the following prescription.
Outside irradiation
The irradiation range can include a pelvis lymph node by the outside irradiation enough and irradiates it and you face from a front and the back (front and back) as a general rule and perform it at 2 gates.
The outside irradiation adopts the irradiation method that covered the center part of the irradiation field as much as possible to perform irradiation in the cavity effectively, but the center cover uses a thing of the 4cm width (distance between A points) for this verge.
You become the irradiation field of all bones irradiation if you exclude the center cover.
The treatment schedule by the outside irradiation irradiates five times of simple division basically for one week and does the radiation dose to a lesion for one week with 10.0Gy front and back, but the total radiation dose to a lesion needs 40.0Gy.
You assume one radiation dose 1.8Gy in all pelvises irradiation, and it is said that you had better irradiate it in 2.0Gy in once in the case of the irradiation by the central cover as much as possible.
But there is the thing that treatment is performed only by only by irradiation in the cavity or all pelvises outside irradiation exceptionally.
Irradiation in the cavity
The irradiation in the cavity uses irradiation in source (tandem) in the womb and the source (ovoid) in the vagina together basically and performs it.
As for the irradiation in the cavity, a thing starting as soon as possible during outside irradiation is important at the stage that irradiation was enabled in the cavity.
It is used together with source in the womb and the source in the vagina, but there can be the thing used individually.
The source in the womb inserts it to the bottom of the womb and installs it.
The source in the vagina uses the thing that source distance is as big as possible.
