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ACUTE RESPONSE OF THE MEDIASTINAL AND THORACIC ORGANS TO INTRAOPERATIVE IRRADIATION IN THE DOG

Guixia ZHOU

Chinese Journal of Radiation Oncology.1992;0(01):-.

35 Gy may be dangerous for the heart and aorta.

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An analysis of the prognosis factors in testicular seminoma

Zhibin CHENG ; Jiucheng ZHANG ; Changqing LI

Chinese Journal of Radiation Oncology.1992;0(01):-.

Purpose:To analyze the prognostic factors of testicular seminoma.Materials and Methods:133 patients with testicular seminoma histologically proved were treated from October, 1975 to December,1990. Most of them were firstly treated with orchiectomy and minority were treated with orchiectomy plus lymphadenectomy in abdomen cavity. All patients were treated with postoperative radiotherapy and a little part of them were combined with irregular chemotherapy. Results: The overall 5-year survival rates were:92.5(65/70) for stage Ⅰ, 52.6(10/19) for stageⅡ, 25%(4/16) for stage Ⅲ and 22.2%(2/9) for stage Ⅳ. Patients received radiation dose of 20～30Gy gave a five year survival rate of 80% which was much better than those who received radiation dose 30Gy(P

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NEW FOCUSES OUTSIDE RADIATION FIELDS OF ESOPHAGEAL CARCINOMA

Anping ZHEN ; Yunxi DOU ; Lianjie FEN

Chinese Journal of Radiation Oncology.1992;0(04):-.

1128 esophageal carcinoma patients were treated by radiation therapy from Jaunary 1978 to December 1981. 64 cases with new focuses in superior and inferior margin of radiative field were 2.9% and 1.6% and in another region was 1.2%. 54 cases were retreated by radiation therapy. The 1-,2-,3- and 5 years survival rates were 53.7%,24.1%,13.5% and 5.8%. We think that new focus outside radiative fields was great different from local recurrence and uncontral cancers. Those patients can still be treated by radical radiation therapy. It is reasonable to prolong 3cm in length above and below the lesion for initial radiotherapy.

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Quality assurance and quality control in X-ray stereotactic radiotherapy

Yimin HU ; Janrong DAI

Chinese Journal of Radiation Oncology.1995;0(02):-.

Purpose:To analyse the X-ray stereotactic treatment process during which errors induced and to establish a QA program and its checking frequency.Materials and Methods: Checking the parallelism and the asymmetry of the opposing plates containing localizing wires of the CT(MRI) stereotactic localizing frame; Checking the precision of the mechanical scaler of the target positioner; The influence of the laser alignment system in the treatment room of linear accelerator ; Determining the overall precisions available by a X-ray stereotactic treatment system; and small beam's data acquisition means, etc.Results: An overall target positions'precisions of 2.4mm,2.6mm(1mm CT slice thickness), and 3.7mm, 3.8mm (3mm CT slice thickness) for single and fractionated X-ray stereotactic irradiation respectively can be achieved if a QA program be seriously carried out.Conclusion: It is an essential to establish a comprehensive QA program to guarantee a good treatment precision of X-ray stereotactic irradiation.

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CLINICAL ANALYSIS OF TEN PATIENTS WITH RADIATION PNEUMONITIS

Jishun HU ; Zhongji MA ; Zeda JIANG

Chinese Journal of Radiation Oncology.1992;0(04):-.

From Jan. 1987 to Dec. 1988, a total of 230 patients (135 lung cancer, 95 breast cancer) were treated by irradiation. The frequency of radiation pneumonitis was 5.1%(7/135) in lung cancer and 3.1%(3/95) in breast cancer. The frequency of lung cancer (n=16) complicated with pleunal effusion and treated by whole chest moving-strip irradiation was 31.2%(5/16) as compared with 2.3%(5/214) in those treated by the conventional radiation. The incidence of radiation pneumonitis was related to dose in the target volume, area of radiation and chemotherapy before radiotherapy.

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TREATMENT TREND FOR WEGENER'S GRANULOMATOSIS——ANALYSIS OF 12 CASES

Xuelin WU

Chinese Journal of Radiation Oncology.1992;0(04):-.

12 patients with histologically proved wegener's granulomatsis were treated from May 1974 to March 1983.The 3-、 5- and 10- year survival rate S were 83%、64%、50% , respectively. The survival rate was higher in the female. Limited lesions gave a better survival rate than generalized ones.Patients with limited lesions should be treated mainly by radiotherapy alone. The optimal dose was 4000-5500 cGy/4-5.5wk.Patients with generalized lesions should be treated by radiotherapy combined with chemotherapy (CTX 4-8g or CCNU 100mg P.O.), hormone (cortisone 30mg/day),and antibiotics.

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Quality Assurance of X Knife

Miaosheng ZHU ; Yuanzhao LIU ; Jingxue HE

Chinese Journal of Radiation Oncology.1995;0(02):-.

Purpose: A comprehensive quality assurance program has been established in Beijing hospital to ensure that "radiosurgery" be carried out precisely and safetely.Materials and Methods: A film checking technique was used to verify the localization accuracy and the setting-up accuracy.Results: The figures taken from 80 cases treated show that the setting-up accuracy of the target positions be within ?1mm .Conclusion: The positional accura cies during target localization and setting-up are guaranteed by using our QA procedures.

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CLINICAL OBSERVATION IN HYPOXY-RADIOTHERAPY OF LUNG CANCER

Shuxiang CUI ; Suoting WANG ; Dianjiu WU

Chinese Journal of Radiation Oncology.1992;0(01):-.

From July 1991 to December 1993, 58 patients with Nonsmall cell lung cancer were randomly divided into hypoxyradiotherapy group (32 patients) and radiotherapy alone group (26 patients). Both groups received the sme radiotherapy with radiation dose of D T 65～70 to cancer of lungs. In hypoxia group, 10.5% oxygen gas mixture was inhaled during the therapy per session. The results showed that tumor response rates, immediate survival rates, skin and systemic reactions were similar in both groups. Hemogram was normal in both groups. In the hypoxyradiotherapy group, radioreaction of lungs, esophagus and trachea were milder than radiotherapy alone group (P

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RADIOTHERAPY OF MALIGNANT PLEURAL EFFUSION WITH MOVING STRIP TECHNIQUE

Jishun HU ; Zhongji MA ; Zeda JIANG

Chinese Journal of Radiation Oncology.1992;0(01):-.

From Oct. 1985 through 1989, 38 patients with malignant pleural effusion were treated with 60Co moving strip technic. Complete response was 19/38 and marked response 10/38. The 1-,2-, and 3-year survival rates were 42.9%, 33.2% and 4.8% in radiation only group. The 1-, 2-, and 3 year survial rates were 47.1%, 35.3%, 11.8% in radiation combined with chemotherapy group. It is proved that radiation be surperior to intracavitary chemotherapy or radiation combind with systemic chemotherapy. This treatmet is safe and well tolerated by patients.

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EFFECTS OF DIFFERENT THERAPY METHODS FOR NON-SMALL CELL LUNG CANCER

Ruizhi WANG ; Minsu LI ; Xiaoqin DENG

Chinese Journal of Radiation Oncology.1992;0(01):-.

From March 1980 to December 1987, 650 patients with non-small cell lung cancers were treated by radiotherapy alone, chemotherapy alone, operation alone, Chinese medicine therapy alone, radiotherapy combined with chemotherapy, operation with radiotherapy operation with chemotherapy. The survival rates of the patients who received operation were obviously higher than radiotherapy alone, chemotherapy alone and Chinese medicine therapy alone groups. No relationship was found between the survival rates and pathological classification, but there was a close relationship between the survival rates and stages.

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