The renewed interest in the use of hyperthermia in cancer therapy is based on radiobiological And clinical evidence indicating that there may be significant thereapeutic advantages with the use of hyperthermia alone or combined with irradiation plus heat. Authors performed the experiment using the chemically induced mammary carcinoma of rats to observe the difference in temperature changes between tumor and...

The therapeutic effect of mammary breast cancer of rat (Sprague Dawley) was estimated by single and 5 fractionated irradiation of Co60 X-ay. Response rates over 50% were 20, 43, 67, 80% respectively by single dose irradiation of 800, 1,200, 1,600, 2,000rad, and 20, 38, 57, 88% by 5 fractionated irradiation of 1,400, 2,100, 2,800, 3,500rad. 50% tumor control dose (TCD50) were...

A retrospective analysis of survival data of 52 cases with brain astrocytomas was presented. All patients received post-perative radiotherapy in the period of 1973~1983 at YUMC, Yonsei Cancer Center. There were 24 patients with Grade II, 12 patients with Grade III and 16 patients with Grade IV astrocytomas. Survival rates were analyzed according to histologic grade of malignancy, age, tumor...

To assess the result of radiation therapy for fifteen years experience, a total of 125 cases of pathologically proven supraglottic laryngeal cancer had been analyzed according to patient survival retrospectively. All the patients had been treated with radiation therapy in curative aim using Co-0 teletherapy machine. The results are as follows; 1. According to AJCC staging, five year survival rate was...

Biological Behavior and treatment results of 33 patients with Adenoid Cystic Carcinoma (ACC) in the Head and Neck at Yonsei Cancer Center for 10 years between 1971 and 1980 were retrospectively analyzed. Most common, primary site was minor salivary glands such as maxillary sinus, nasal cavity and base of tongue. The typical biological behavior of these tumors was very slowly...

From 1979 to 1982, 80 patients with unresectable non-mall-ell lung cancer without metastasis were treated with high-ose radiotherapy to the primary and to regional lymph nodes with or without supraclavicular lymphatic in the Department of Therapeutic radiology, Seoul National University Hospital. Of these, 56 patients (70%) were completely evaluable, and 59 patients (74%) had squamous cell carcinoma, 13% large cell...

131 patients of non-small cell lung cancer treated with irradiation at Yonsei Cancer Center from Jan. 1971 to Dec. 1980 were Retrospectively analyzed. Overall 5-ear survival rate was 7% in 117 cases, treated with radiotherapy alone and 33% in 14 Cases, Treated with surgery & postoperative radiotherapy. Their median survival was 9.6 months in the former, while 11.1 months in the...

The recogition that the vast majority of patients with small cell lung cancer have distant metastatic disease at the time of diagnosis lead to the use of systemic chemotherapy and consequent major improvement in survival, but recently evaluated treatment strategies, integration of large field chest irradiation with chemotherapy lead to the improved the local control and relapse free survival in...

Surgery remains the mainstay in the management of carcinoma of the rectum. However, Local recurrence and systemic metastasis remain the challenge. It appears that post operative radiotherapy has a very definite role in the reduction of local recurrence. Ninety two patients of carcinoma of the rectum after curative surgery received post operative radiotherapy 5,000 rad/5~6 weeks to whole pelvis at...

Thirty patients with loco-egional recurrence following curative surgery for adenocarcinoma of the rectum were retrospectively. Evaluated to determine factors influencing survival and the efficacy of radiation therapy. In this review of 30 patients undergoing radiation therapy, more than 50 percent (17/30) had definite symptomatic and objective response. Ninety percent of patients (27/30) received significant palliation. Over all 2-ear survival rate...

The record of radiation therapy cases during a five-ear period at the University of Michigan Hospitals has been analyzed. Of a total of 73 Aden carcinoma of prostate, the majority belonged to Stage B and C which represented 49 and 20 cases, respectively. The mortality rate after irradiation was clearly related to the tumor stage. Local irradiation resulted in 88%...

Between January 1971 and December 1980 fifteen patients diagnosed of Aden carcinoma of the endometrium, stage II seen and treated at the University of Michigan Hospitals, are reviewed. Ten patients were treated with radiation therapy alone, five received hysterectomy after radiation. The five-ear survival of the patients receiving radiation and surgery was 100% although one of them died after 62 month...

The intrauterine irradiation is essential to achieve adequate tumor dose to central tumor mass of uterine malignancy in radiotherapy. The complications of pelvic organ are known to be directly related to radiation dose and physical parameters. The simulation radiogram and medical records of 206 patients, who were treated with intrauterine irradiation from Feb. 1983 to Oct. 1983, were critically analyzed. The physical parameters...

The peripheral dose, defined as the dose outside therapeutic photom fields, Which is responsible for the functional damage of the critical organs, fetus, and radiation-nduced carcinogenesis, has been investigated for 60 Co gamma ray and 10 MV X ray. It was measured by silicon diode controlled by semiautomated water phantom without any shielding or with lead plate of HVL thickness...

The authors have intended to measure intrinsic dose distribution by Farmer dosimeter in irregularly shaped fields such as L.M. and T shape models in order to determine dose in homogeneity in those models. We made 2 off-xis points in each model and measured the depth dose at 1.5, 5 and 9cm below surface. The results showed 1~3% dose discrepancy between...

The normal intracranial structures are relatively resistant to therapeutic radiation, but may react adversely in a variety of ways and the damage to nerve tissue may be slow in making its appearance and once damage has occurred the patient recovers slowly and incompletely. Therefore, it is important to consider the possibility of either recurrent tumor or late adverse effect in...

No abstract available.

Radiation therapy (RT) has been used in the treatment of breast cancer for over 80 years. Technically, it should include a part or all of such areas as chest wall or breast, axilla, internal mammary nodes (IM) and supraclavicular nodes (SCL). Authors tried three-ield technique for the treatment of breast cancer using 6-V linear accelerator, exclusively the department of radiology,...