Objective:To investigate the current situation of nuclear medicine practices, determine the number of nuclear medicine staff, conduct internal exposure monitoring and dose estimation for nuclear mecidine staff engaged in 131I treatment in Zhejiang province. Methods:A survey was conducted over all the 22 hospitals involved in 131I treatment in the province. The 131I activity in thyroid of 96 stafff in 131I treatment workplaces were measured by means of direct method. At the same time, the effective doses from internal exposure were estimated and the influencing factors were analyzed. Results:131I activity in thyroids was found to be above the detection limit for 49 staff (51.04%) in nineteen hospitals. The maximum value of 131I activity was 629.18 Bq. There was no statistically significant difference in 131I detection rate in thyroid of 131I treatment staff between different positions, different genders and different levels of hospitals ( P>0.05). Comparisons of 131I activity of thyroid of nuclear medicine staff for theatment of thyroid cancers had shown that the highest was for nurses, followed by technicians and doctors, and the lowest was for cleaning staff ( H=6.39, P<0.05). The estimated committed effective dose to the nuclear medicine staff ranged from 0.05 to 2.37 mSv, with those below 1 mSv accounting for 93.88% of the total. Logistic regression analysis showed that nursing position was the risk factor contributing to the committed effective dose ( OR=2.805, 95% CI 1.076-7.314). Conclusions:In Zhejiang province, the committed effective dose to thyroid of nuclear medicine staff from 131I internal exposure was not in excess of the dose limit. However, the staff performing iodine therapy still need to strengthen protection against internal exposure and take scientific and effective protective measures to reduce the risk of health hazards from internal exposure.

Objective:To investigate the current situation of nuclear medicine practices, determine the number of nuclear medicine staff, conduct internal exposure monitoring and dose estimation for nuclear mecidine staff engaged in 131I treatment in Zhejiang province. Methods:A survey was conducted over all the 22 hospitals involved in 131I treatment in the province. The 131I activity in thyroid of 96 stafff in 131I treatment workplaces were measured by means of direct method. At the same time, the effective doses from internal exposure were estimated and the influencing factors were analyzed. Results:131I activity in thyroids was found to be above the detection limit for 49 staff (51.04%) in nineteen hospitals. The maximum value of 131I activity was 629.18 Bq. There was no statistically significant difference in 131I detection rate in thyroid of 131I treatment staff between different positions, different genders and different levels of hospitals ( P>0.05). Comparisons of 131I activity of thyroid of nuclear medicine staff for theatment of thyroid cancers had shown that the highest was for nurses, followed by technicians and doctors, and the lowest was for cleaning staff ( H=6.39, P<0.05). The estimated committed effective dose to the nuclear medicine staff ranged from 0.05 to 2.37 mSv, with those below 1 mSv accounting for 93.88% of the total. Logistic regression analysis showed that nursing position was the risk factor contributing to the committed effective dose ( OR=2.805, 95% CI 1.076-7.314). Conclusions:In Zhejiang province, the committed effective dose to thyroid of nuclear medicine staff from 131I internal exposure was not in excess of the dose limit. However, the staff performing iodine therapy still need to strengthen protection against internal exposure and take scientific and effective protective measures to reduce the risk of health hazards from internal exposure.

Objective:To investigate the clinical effect of the facial artery perforator flap in repairing the lower eyelid cicatricial ectropion.Methods:The clinical data of patients with lower eyelid cicatricial ectropion admitted to the Department of Burn and Plastic Surgery, Affiliated Hospital of Zunyi Medical University from January 2016 to December 2019 were retrospectively analyzed. After the lower eyelid scar was removed and contracture was released, the facial artery perforator flap was designed to repair the skin defect, and the donor site was sutured directly. The appearance and complications of the recipient and donor sites were followed up after the operation, and the operation effect was evaluated as good, general and poor.Results:A total of 22 patients with lower eyelid cicatricial ectropion were enrolled, including 15 males and 7 females, with an average age of 35.2 years (range, 27-68 years). The area of skin defect after scar release was 3.0 cm×1.5 cm-4.0 cm×2.0 cm, and the area of skin flap was 3.1 cm×1.6 cm-4.1 cm×2.1 cm. All flaps survived with good blood supply and healed well. All patients were followed up for 6-48 months, and there was no recurrence of lower eyelid ectropion, blepharon separation, local pigmentation and other phenomena. All patients showed good anatomical structure and functional improvement, and the postoperative effect evaluation of all cases was good.Conclusions:The facial artery perforator flap has the advantages of the stable perforator, good blood supply, flexible rotation, close position with the lower eyelid, and similar color, texture, and thickness. Good result can be obtained in repairing lower eyelid cicatricial ectropion by using a facial artery perforator flap.

Objective:To investigate the clinical effect of the facial artery perforator flap in repairing the lower eyelid cicatricial ectropion.Methods:The clinical data of patients with lower eyelid cicatricial ectropion admitted to the Department of Burn and Plastic Surgery, Affiliated Hospital of Zunyi Medical University from January 2016 to December 2019 were retrospectively analyzed. After the lower eyelid scar was removed and contracture was released, the facial artery perforator flap was designed to repair the skin defect, and the donor site was sutured directly. The appearance and complications of the recipient and donor sites were followed up after the operation, and the operation effect was evaluated as good, general and poor.Results:A total of 22 patients with lower eyelid cicatricial ectropion were enrolled, including 15 males and 7 females, with an average age of 35.2 years (range, 27-68 years). The area of skin defect after scar release was 3.0 cm×1.5 cm-4.0 cm×2.0 cm, and the area of skin flap was 3.1 cm×1.6 cm-4.1 cm×2.1 cm. All flaps survived with good blood supply and healed well. All patients were followed up for 6-48 months, and there was no recurrence of lower eyelid ectropion, blepharon separation, local pigmentation and other phenomena. All patients showed good anatomical structure and functional improvement, and the postoperative effect evaluation of all cases was good.Conclusions:The facial artery perforator flap has the advantages of the stable perforator, good blood supply, flexible rotation, close position with the lower eyelid, and similar color, texture, and thickness. Good result can be obtained in repairing lower eyelid cicatricial ectropion by using a facial artery perforator flap.