放射治疗设备仪器.pdf

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1、ExternalBeamRadiationTherapyWhatisexternalbeamradiationtherapy?•Externalbeamradiationtherapycomesfromamachinethataimsradiationatyourcancer.Themachineislargeandmaybenoisy.Itdoesnottouchyou,butrotatesaroundyou,sendingradiationtoyourbodyfrommanydirections.•Extern

2、albeamradiationtherapyisalocaltreatment,meaningthattheradiationisaimedonlyataspecificpartofyourbody.Forexample,ifyouhavelungcancer,youwillgetradiationtoyourchestonlyandnottherestofyourbody.Externalbeamradiationtherapycomesfromamachinethataimsradiationatyourcan

3、cer.http://www.cancer.gov/cancertopics/radiation-therapy-and-you/page3HowoftenwillIgetexternalbeamradiationtherapy?•Mostpeoplegetexternalbeamradiationtherapyonceaday,5daysaweek,MondaythroughFriday.Treatmentlastsfor2to10weeks,dependingonthetypeofcanceryouhavean

4、dthegoalofyourtreatment.Thetimebetweenyourfirstandlastradiationtherapysessionsiscalledacourseoftreatment.•Radiationissometimesgiveninsmallerdosestwiceaday(hyperfractionatedradiationtherapy).Yourdoctormayprescribethistypeoftreatmentifheorshefeelsthatitwillworkb

5、etter.Althoughsideeffectsmaybemoresevere,theremaybefewerlatesideeffects.Doctorsaredoingresearchtoseewhichtypesofcancerarebesttreatedthisway.Whathappensbeforemyfirstexternalbeamradiationtreatment?•Youwillhavea1-to2-hourmeetingwithyourdoctorornursebeforeyoubegin

6、radiationtherapy.Atthistime,youwillhaveaphysicalexam,talkaboutyourmedicalhistory,andmaybehaveimagingtests.•Yourdoctorornursewilldiscussexternalbeamradiationtherapy,itsbenefitsandsideeffects,andwaysyoucancareforyourselfduringandaftertreatment.Youcanthenchoosewh

7、ethertohaveexternalbeamradiationtherapy.•Ifyouagreetohaveexternalbeamradiationtherapy,youwillbescheduledforatreatmentplanningsessioncalledasimulation.•Aradiationoncologistandradiationtherapistwilldefineyourtreatmentarea(alsocalledatreatmentportortreatmentfield

8、).Thisreferstotheplacesinyourbodythatwillgetradiation.Youwillbeaskedtolieverystillwhilex-raysorscansaretakentodefinethetreatmentarea.Stepsinradiationtreatment:•Consultation:Atthebe