2017年 · 第37卷第11期

Lung cancer is one of the most common tumors, and the lung is also the site most prone to metastasis. CT-guided percutaneous transthoracic needle biopsy (PTNB) to obtain histological specimens is a widely accepted, safe and effective method for diagnosing the nature of lung masses. Unlike the use of magnetic resonance and ultrasound, CT guidance brings higher levels of radiation exposure to patients^[1,2,3]。 The traditional PTNB procedure consists of three steps: preoperative positioning, intraoperative guidance, and postoperative review (excluding puncture and incision-related complications). Kloeckner et al.^[4]It was found that the radiation generated by the intraoperative guidance itself only accounted for 15% of the total dose, whereas 85% was generated during the perioperative period. Nattenmüller et al.^[5]It is considered that the complications of CT intervention are very low, and all major complications requiring clinical intervention can be detected by clinical observation, so routine CT scan is not necessary for all patients after operation, which helps to reduce the radiation of patients. But Nattenmüller et al.^[5]The conclusions are mainly based on the data of abdominal interventions. PTNB has the highest complications among all CT interventions^[5,6,7,8]。 In view of these different conclusions, this study retrospectively analyzed the value of CT scan after PTNB in detecting surgical complications and its impact on clinical treatment decision-making, in order to explore whether routine total thoracic CT scan after PTNB is necessary and its potential value in reducing patients' radiation.

In order to establish and improve the health records of radiation workers, according to the national standard GBZ 235-2011 "Technical Specification for Occupational Health Monitoring of Radiation Workers"^[1]In this study, occupational health monitoring was carried out for radiation workers in Tianjin. Micronucleus detection of peripheral blood lymphocytes is a simple and valuable cytogenetic index to evaluate the radiation effect of occupational exposure population^[2]At the same time, it is also a mandatory item in the occupational health examination of radiation workers. Peripheral blood lymphocyte micronucleus detection was performed on 1 411 radiation workers in Tianjin, which are reported below.

Lu Wei, Department of Engineering Physics, Tsinghua University, et al., in the Official Journal of the American Society for Health PhysicsHealth Physics[2017, 113 (5): 327 – 334. DOI: 10.1097/HP.0000000000000711, impact factor 1.276] published research paper "Physical dosimetric reconstruction of a radiological accident at Nanjing (China) for clinical treatment using THUDose", The corresponding author of this article is Associate Professor Rui Qiu.

Yurui Zhang, Institute of Radiological Medicine, Chinese Academy of Medical Sciences, et al., in the Official Journal of the American Society for Radiological ResearchRadiation Research[2017, 188 (3): 264-275. DOI: 10.1667/RR14590.1, impact factor 2.539] published research paper "Synthesis and characterization of a rosmarinic acid derivative that targets mitochondria and protects against radiation-induced damagein vitro", the corresponding author of this article is researcher Xu Wenqing.