PET-CT Specialist Uses Large Bore for radiotherapy treatment planning CT scanners combined with PET a■Ie ⊙ UKRC:22nd May 2001
PET-CT
Skin reference marking Position of Treatment Volume must be related to markings on patient's skin Lasers ImPACT Course 07/02-CT in Radiotherapy 10
Radiotherapy CT scanner Laser positioning lights ImPACT Course 07/02-CT in Radiotherapy 37
Treatment planning Using Treatment Planning software beam sizes,beam directions and required shielding are selected to achieve desired distribution 15x13 18 MV x-rays ) Tumour 50 :11x13 18 MV x rers Targel Voun日 Treatment Volume Irrsdiatad valume ImPACT Course 07/02-CT in Radiotherapy 16
第二节CT的工作原理 X-CT扫描原理 以测定人体对X射线的衰减系 数为基础，用数学方法经电子计 算机处理而重建断层图象
X-CT扫描原理 以测定人体对X射线的衰减系 数为基础，用数学方法经电子计 算 机处理而重建断层图象。 第二节 CT的工作原理