RESUMO
Cervical and mediastinal lymph nodes ( CMLN) are usually close to some important ves-sels, nerves and organs, which brings much difficult for surgical and radiotherapy. CT-guided 125 I seed im-plantation is becoming an effective, safe and reliable treatment. CT could be used to observe the distribution of seeds, complication and therapeutic effect after the implantation. This paper focuses on the advances of CT-guided 125 I seed implantation on residual or relapsing metastatic CMLN.
RESUMO
Objective To investigate the effectiveness of radio gu ided surgery (RGS) in lung carcinoma by using ~18F-FDG. Methods Forty mice bearing lung adenocarcinoma were divided randomly into two gro ups according to presence or absence of the lung metastasis. A dose of 200?l (1 00?Ci) of ~18F-FDG was injected via the tail vein. The external radioimmu nography was performed after injection. All viscerae and tumor were detected i n vivo by means of a hand-held gammaray-detecting probe (GDP), and the radio active distribution was analyzed with the well-gammaray detector. Resul ts The tumor images in mice were clear, and the images were best at two hours after injection. The values of %ID/g of tumor and heart obtained by well -gammaray detector were higher than those of other organs. Ratios of tumor/norm al tissue (T/NT) except cardiac muscle being detected by GDP ranged from 3.71 t o 13.57. There was a significant difference between the radioactivity of lung t issues in lung metastasis group and that of control group (P