Objective To explore the current status of radiation protection in interventional procedure and to analyze the existent problems.Methods Using the random sampling,70 interventional radiology workplaces were selected from Hangzhou,Ningbo,Wenzhou,Shaoxing and Jinhua.Information on personal radiation protective products and equipment was collected by filling out the form by hospital and the radiation dose was monitored at various body parts of the workers and at the outside of the operating room.Results All hospitals have been equipped with personal radiation protective products and equipment,22 of which were not with these products and equipment as required.Chest,abdomen and lower limb of interventional radiology workers are easy to receive higher radiation dose than in head (F =4.85,4.92,P ＜ 0.05).The acceptance rates among different body parts of the workers were difference significantly (x2 =35.14,14.92,P ＜ 0.05).Using protective curtain can reduce the radiation dose significantly (t =11.61-68.28,P ＜ 0.05).Meanwhile,it also can improve the acceptance rates significantly (x2 =6.09-28.45,P ＜ 0.05).Conclusions It is necessary to strengthen the use of radiation protection equipment among interventional radiology workers to reduce the levels of the individual doses to them.Hospitals must enhance the routine monitoring for improved radiaton protection.

Objective:To explore the strategies and key operation points of microsurgery in the treatment of meningioma in sagittal sinus and falx cerebri .Methods:The clinical data of 73 patients with meningioma in sagittal and beside cerebral falx were analyzed retrospectively .The tumors located in the anterior 1/3 segment of sagittal sinus or cerebral falx in 19 cases ,in the central 1/3 segment in 46 cases ,and in the posterior 1/3 segment in 8 cases .The base of tumors originated from the sagit‐tal sinus in 27 cases ,originated from the cerebral falx in 33 cases ,and involved with both the sagittal sinus and the falx cerebri in 13 cases .Microsurgery technique was applied to resect the tumors ,and to treat with sagittal sinus or falx cerebri invaded by tumor .Results:There were 24 cases of Simpson Grade I resection ,46 cases of Simpson Grade II resection ,and 3 cases of Simpson Grade III resection .No case died due to operation .No case suffered from severe cerebral edema or cerebral venous in‐farction .64 cases were followed up for 6 months to 7 years ,and tumors recurred in 6 cases (9 .3% ) .Conclusions:During the microsurgical operation for total resection of the meningioma in sagittal sinus and falx cerebri ,the correct treatment for involved sagittal sinus and falx cerebri ,as well as the protection for bridging venous ,is the key to achieve satisfactory effect of opera‐tion .

Objective: To investigate the contents of radionuclide ¹³⁷Cs in seafood from coastal areas of Zhejiang province, and to estimate the annual committed effective dose to population in different regions from ingestion of ¹³⁷Cs in seafood. Methods: Three representative monitoring areas were set on the coastaline of Zhejiang province, and the locally popular seafoods were selected as monitoring objectives. The contents of radionuclide ¹³⁷Cs were detected using HPGe γ spectrometry. The committed effective doses were estimated based on monitoring results and consumption data on seafoods in Zhejiang. Results: The detection ratio of ¹³⁷Cs in seafood produced on coastal areas of Zhejiang province was estimated to be 35.3% (36/102). Specific activity detected ranged from 0.004 to 0.140 Bq/(kg, Wet). Committed effective doses from ingestion of ¹³⁷Cs in one year to the population in island region, coastal region and inland region were 3.03×10^-5, 1.63×10^-5, 3.38×10^-6 mSv, respectively, far lower than the world committed effective dose resulting from internal exposure. Conclusions At present, the content level of ¹³⁷Cs in seafood produced on the coastal areas of Zhejiang province is much lower than the national standard limit, and the dose burden to the population is very minor with no health impact to the population.