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10 September 2017 : Laboratory Research  

Modified Fan-Shaped Distribution Technology for Computed Tomography (CT)-Guided Radioactive Seed Implantation in Lung Cancer Patients with Lung Dysfunction

Peng Du1AB, Yueyong Xiao2CD, Wei Lu1EFG*

DOI: 10.12659/MSM.902105

Med Sci Monit 2017; 23:4366-4375

Abstract

BACKGROUND: The aim of this study was to investigate the safety and effectiveness of fan-shaped distribution and coaxial puncture technology for radioactive iodine 125 (125I) seed implantation in treatment of lung cancer patients with lung dysfunction.

MATERIAL AND METHODS: We enrolled and analyzed 33 lung cancer patients with lung dysfunction diagnosed in our hospital from 2013 to 2014 in this study, all of which were implanted with radioactive 125I seed with technology of fan-shaped distribution and coaxial puncture. The matched peripheral dose (MPD) range was 90–140GY. The brachytherapy planning system (TPS) was used to draw up a preoperative seed implantation plan. The fan-shaped distribution system was applied to simulate a surgery program, and seed implantation pitch was 0.5–1.0 cm. Real-time adjustment was necessary during surgery. Dose distributions were verified by TPS immediately after implantation. Intraoperative and postoperative surgery-related complications were analyzed. All patients were followed up for 6 months, and the local control rate of cancer was evaluated through CT scan.

RESULTS: All patients were operated on successfully. The main surgery-related complications were pulmonary hemorrhage, pleural cavity hemorrhage, and pneumothorax. The local control rates of 2-month, 4-month, and 6-month were 29%, 73%, and 85%, respectively. The total complete remission rate was 18%, the partial response rate was 67%, the stable disease rate was 12%, and the disease progression rate was 3%.

CONCLUSIONS: The fan-shaped distribution and coaxial puncture technology for radioactive 125I seed implantation was safe and effective in treating lung cancer patients with lung dysfunction.

Keywords: Biomedical Technology, Brachytherapy

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750