螺旋断层放疗系统.ppt

背景先进的治疗计划每日CT图象360o全方位治疗个性化护理平台螺旋断层放疗机(TomoTherapy)是目前世界上唯一能够治疗癌症的CT机美国CNN对TomoTherapy的评价肿瘤治疗的颠峰产品细小脑部肿瘤Tomo有两种工作状态：成像状态时能量为2.8MV；治疗状态时能量为6MVHelicalTomoProstateTomo独有兆伏级CT成像技术目前最先进的放疗技术TomoTherapy进行调强放疗的临床效果Tomo拥有无与伦比的调强治疗能力肿瘤适形度剂量均匀性要害器官的保护TomoTherapy在影像引导上的独特优点Tomo放疗技术的优势TomoTherapy如何工作的?治疗前，通过三维成像和特殊软件精确的确定肿瘤的轮廓；确定肿瘤所接受的辐射剂量，同时考虑周边结构能承受的放射水平；TomoTherapyHi-Art系统计划工作站计算出合适的模式，位置和照射强度一体化解决方案TomoTherapy集成化的图像融合配准工具Tomo上可以进行的放疗技术SBRT例1:Arteriovenousmalformation(AVM)动静脉畸形瘤肿瘤大小:29cc肿瘤包裹了脑干、视交叉和左侧视神经单次16居里(Gy)Tomo的应用总结参考文献SanfordL.M.,JosephF.H.,KatjaM.L.,etal.Performancecharacterizationofmegavoltagecomputedtomographyimagingonahelicaltomotherapyunit.Am.Assoc.Phys.Med.,2005,32(8):2673-2681.KissickaM.W.,FenwickJ.,JamesJ.A.,etal.Thehelicaltomotherapythreadeffect.Am.Assoc.Phys.Med.,32(5):1414-1423.JohnB.,DanL.,CleberD.S.,etal.Helicaltomotherapyradiationleakageandshieldingconsiderations.Am.Assoc.Phys.Med.,2005,32(3):710-719.StephenL.M.,DanielJ.C.,andChesterR.R.TechnicalNote:OutputandenergyfluctuationsofthetomotherapyHi-Arthelicaltomotherapysystem.Am.Assoc.Phys.Med.,2005,32(7):2119-2120.RobertJ.,ThomasR.M.,JohnB.,etal.Radiationcharacteristicsofhelicaltomotherapy.Am.Assoc.Phys.Med.,2004,31(2):396-404.JohnB.,GustavoO.,JeffK.etal.Clinicalhelicaltomotherapycommissioningdosimetry.Am.Assoc.Phys.Med.,2003,30(12):3097-3106.ZhangT.Z.,JerajR,,KellerH.,etal.Clinicalhelicaltomotherapycommissioningdosimetry.Am.Assoc.Phys.Med.,2004,31(6):1576-1586.HooperH.R.andFalloneB.G.Technicalnote:Sinogrammergingtocompensatefortruncationofprojectiondataintomotherapyimaging.Am.Assoc.Phys.Med.,2002,29(11):2548-2551.RobinsonD.,ScrimgerJ.W.,FieldG.C.,etal.Shieldingconsiderationsfortomotherapy.Am.Assoc.Phys.Med.,2000,27(10):2380-2384.谢谢大家！