Study The Motion Of Respiration In The Treatment Of Non-small-cell Lung Cancer Use Intensity-modulated Radiation Therapy (IMRT) And The Value Of Deep Inspiration Breath Holding In The Treatment

Objective: Intensity modulated radiotherapy (IMRT) is a mode of precision radiation therapy which offers the prospect of improved locally advanced non-small-cell lung cancer (NSCLC). Because the motion of respiration in the lung, the determinative of the planning target volume (PTV) is probably one of the most difficult challenges for radiotherapists. To define the PTV is very important to the tumor control probability and normal tissue complication probability of the cancer. In this study, we tried to study the motion of respiration in the treatment of non-small-cell lung cancer with intensity-modulated radiation therapy (IMRT) and the value of deep inspiration breath-holding technology in the treatment.Methods: From June 2003 and December 2004,30 patients with Stage I to IIIa of non-small-cell lung cancer (NSCLC) were obtained at the Third Hospital of HeBei Medical University. 20 were adenocarcinoma (ADC) and 10 were squamous cell carcinoma (SCC). All of the patients were immobilized with thermoplast as they treated. Using the ink...