We studied the T lymphocyte and its subpopulation percentage change in 40 patients immediately after the radiation therapy. Study population consisted of 12 patients treated at the site of head and neck region, 14 patients treated at the site of thoracic region, and 14 patients treated at the site of pelvic region. Twenty two patients received radiotherapy as radical modality,...

Three-dimensional dose calculations based on CT images are fundamental to stereotactic radiosurgery for small intracranial tumor. In our stereotactic radiosurgery program, irradiations have been performed using the 6 MV photon beam of linear accelerator after stereotactic CT investigations of the target center through the beam's-eye view and the coordinates of BRW frame converted to that of radiosurgery. Also we can...

It is ideal thing to compensate tissue deficit without skin contamination in curvatured irradiation field of high energy Photon beam. The 3-dimensional compensating technique utilizing tissue equivalent materials to ensure an adequate dose distribution and skin sparing effect was described. This compensator was made of paraffin(70%) and stearin wax (30%) compound. The parameters for evaluation of the effect on skin dose...

The eye lens is known to be radiosensitive organ and catarat can be induced by relatively low dose of radiation. In the treatment of head and neck tumors, shielding blocks are frequently used to minimize dose on sensitive organs. The shielding block, which is trade of high atomic number materials (cerrobend), produce significant dose perturbations in megavoltage photos beams. The...

A retrospective analysis was performed on 53 patients with brain malignant astrocytoma and glioblastoma multiforme treated with surgical resection and postoperative radiotherapy in the period between January 1980 and June 1991. There were 13 patients with malignant astrocytoma, 40 patients with glioblastoma multiforme. Survival rates were analyzed according to histologic grade, age, performance states, extent of surgical resection, tumor location,...

The precise role of radiotherapy for low grade gliomas including the optimal radiation dose and timing of treatment remains unclear. The information given by a retrosepctive analysis may be useful in the design of prospective randomized studies looking at radiation dose and time of surgical and radiotherapeutic treatment. The records of 56 patients (M:F=29:27) with histologically verified cerebral low grade...

A retrospective analysis was undertaken for 22 patients with early glottic cancer (T1N0M0;17, T2N0M0;5) who completed curative radiotherapy at the Department of Therapeutic Radiology, Chonnam University Hospital between November 1985 and December 1990. Median follow-up period was 39 months. The 3 year actuarial survival rate of T1,T2 was 81% and 80%, respectively. Three patients(13%) shewed second malignant tumors and the site...

Local control is the important prognostic factor in cancer treatment because local control decrease the relative risk of metastatic spread and increse distant metastasis free survival. IORT is the modality which could increase local control without incressing complication, combined with curative operation. Eventhough we could achieve significant deacreased local failure by IORT and curative resection, it should not be committed...

During the period between March 1983 and December 1990, 74 patients with esophageal carcinoma(EC) were treated with radiation therapy(RT) at the Department of Therapeutic Radiology, Kangnam St. Mary's Hospital, Catholic University Medical College. Of these, 6 patients were lost to follow-up, and 13 patients were interrupted. So the remaining 55 patients were analyzed, retrospectively. 32 patients were irradiated with curative...

Ninety five patients of rectal cancer treated with surgery with or without adjuvant radiation therapy since January 1982 to December 1990 at the Chonnam University Hospital were analysed retrospectively regarding local failure. Of these 95 patients 72 patients were treated with surgery alone and remaining 23 patients received postoperative radiation therapy to pelvis. There were 45 men and 50 women...

Locally advanced cervical carcinoma has shown high rate of local failure and poor survival rate despite the advances in modern radiation therapy techniques. Combination of chemotherapy and radiation therapy demonstrated benefit in improving local control and possibly the overall survival. Twelve patients with advanced stages(Figo stage III, IV) or 11b with bulky tumors(>5 cm in diameter) were treated with combination of...

Fifty patients with carcinoma of the uterine cervix received curative radiotherapy by external irradiation of the whole pelvis and intracavitary radiation at the Department of Therapeutic Radiology, Kangnam St. Mary's Hospital from September,1983 to October, 1986. External beam whole pelvic irradiation was done first up to 4500-5940 cGy in 5 weeks to 6.5 weeks, followed by an intracavitary radiation. Total...

From March 1979 through December 1988, 232 previously untreated patients with invasive carcinoma of the uterine cervix stage IIB were treated at the Department of Therapeutic Radiology, Seoul National University Hospital. The patients studied were staged according to the FIGO recommendations and the majority of patients were treated with external beam whole pelvis radiation and intracavitary radiation. Pretreatment parameters, including physical...

Five hundred and fifty patients treated for carcinoma of the uterine cervix at the Department of Therapeutic Radiology, Seoul National University Hospital from 1979 to 1986, were analyzed retroepectively for late rectal complications. Of them, 468 patients received primary radiotherapy for the cervix cancer in intact uterus, and the other eighty two patients were treated postoperatively. The cumulative incidence of...

Between August 1987 and July 1991, 22 patients with acute nonlymphocytic leukemia have received allogeneic bone Marrow transplantation (BMT) with non-T-Iymphocyte-depleted marrow obtained from matched sibling donors. Of these patients, 12 patients were in first complete remission(CR) and 10 patients in second CR or greater or in relapse. All patients were treated with a preparative regimen consisting of cyclophosphamide (CTX,...

We have treated adult acute leukemia 64 patients between January 1990 and October 1991 at the Chungnam National University Hospital. They were examined for the impact of presenting WBC count on the initial course and from them we have chosen twenty patients whose leukocyte count is over one hundred thousands per cubic milimeter. We divided the twenty patients into 4...

We analyzed retrospectively the patients of granulocytic sarcoma treated with radiotherapy at the Department of Radiation Oncology, Yonsei University College of Medicine from Mar. 1987 to Mar. 1992 in an attempt to review our experience with irradiation of granulocytic sarcoma and to evaluate the treatment results for the radiation dose response. Fourteen lesions of granulocytic sarcoma in 9 patients were...

Remote afterloading high dose rate brachytherapy(HDRB) is a new technology and needs new biological principle for time and dose schedule. Here, authors attempt to evaluate the technique and clinical outcome in 116 patients, 590 procedures performed at Asan Medical Center for 3 years. From Sep. 1985 to Aug 1992, 471 procedures of intracavitary radiation in 55 patients of cervical cancer and...