The total dose of the external and intracavitary irradiation at point A and B was 65~85Gy and 50~70Gy ,respectively. The total treatment time was 6~8 weeks .
During 1980.2~1983.2, 343 cases of cervix cancer were treated with AH-I type high dose-rate afterloading intracavitary application combined with external irradiation for radical management.
METHODS The kind of arrhythmi a, shortening of action potential duration(APD) and triggered activity(TA) mode ls were established by inflating the intracavitary balloon, clamping the ascendi ng aorta and by stretching ventricular papillary muscle, transiently.
Employing this method by Matlab, intracavitary points are eliminated, and a set of extrema are gained used to create a 3- D model of heart chamber during di- astole.
The total dose at line A through intracavitary was 5000cGy, The 2, 3, 4, year survival rates were 13/15(86.66%), 9/11(81.81%)and 3/4(75.0%) respectively.
From May 1992 to September 1993, 80 NPC T 1-2 N 0-1 M 0 patients were treated with combined external irradiation plus intracavitary brachytherapy of high dose rate (combination radiotherapy group) and 80 NPC T 1-2 N 0-1 M 0 patients were treated with simple external beam therapy (simple radiotherapy group).
The model is based on the assumption that the structures demonstrating invaginations and evaginations are closed systems capable of changing their intracavitary pressure in an autonomous regime.
This paper presents a heat transfer model for the hyperthermia treatment of cervix cancer using a intracavitary microwave applicator and based on which the 3-D finite element simulation of the temperature fields have done.
First, in order to remove that part of the systolic force which is related to intracavitary pressure, left ventricular bypass was created and the left ventricle vented.
Seventy two cases of carcinoma of the uterine cervix were treated with conven- tional intracavitary radium applications followed by one or two sessions of short course external cobalt irradiation in 2 to 6 fractions within 2 to 7 days.The 5-year survival rate for patients in Stage Ⅱ was 67.4% and for those in Stage Ⅲ,53.8%, similar to those treated by conventional regime.Complications of bladder and rectum were not increased,but soft tissue fibrosis occurred in one third of the patients.
The apparatus is a high dose-rate afterloading system devoloped successfully in our country for first time since its radioactive sources are manually remotely controlled, the device is simple in structure, easy, reliadle and safe to operate. Its production cost is low. All advantages metioned above make it popular and meets the demands of WHO. This system is composed of safe, applicators constrol desk and so on. It is mainly used for intracavitary treatment of the cervix cancer, also able to treat the...
During 1980.2~1983.2, 343 cases of cervix cancer were treated with AH-I type high dose-rate afterloading intracavitary application combined with external irradiation for radical management. Of the 313 patients, 220 are eligible one year survival: 138 for two years assessment. One year survival rate was 73.6% and two year survival rate was 71.0% (IIb 77.5%; IIIa+b68.0%). Survival results are similar to that reported by Joslin. This study also suggests the complications attributable to intracavitary$...