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RTOG-放疗中胸部危及器官勾画-Organs-at-Risk-(OARs)-in-Thoracic.ppt

1、 1Atlases for Organs at Risk(OARs)in Thoracic Radiation Therapy放疗中胸部危机放疗中胸部危机(wij)器官勾画器官勾画Feng-Ming(Spring)Kong MD PhDLeslie Quint MDMitchell Machtay MDJeffrey Bradley MD第一页,共一百零九页。2Outline of ContentAtlas for lung,esophagus,and spinal cord肺、食管、脊髓(j su)的勾画Atlas for brachial plexus臂丛神经的勾画Atlas for pr

2、oximal bronchial tree近端支气管树的勾画Atlas for chest wall 胸壁的勾画Atlas for pericardium,heart and great vessels(including normal pericardial recesses)心包、心脏、大血管(包括正常心包凹陷)的勾画第二页,共一百零九页。3RTOG 1106 Required OARsStructureDescriptionStructure definition and contouring instructionsLungLungs PreGTV(composite of CT1GT

3、V and PETMTV)Both lungs should be contoured using pulmonary windows.The right and left lungs can be contoured separately,but they should be considered as one structure for lung dosimetry.All inflated and collapsed,fibrotic and emphysematic lungs should be contoured,small vessels extending beyond the

4、 hilar regions should be included;however,pre GTV,hilars and trachea/main bronchus should not be included in this structure.HeartHeart&PericardiumThe heart will be contoured along with the pericardial sac.The superior aspect(or base)will begin at the level of the inferior aspect of the pulmonary art

5、ery passing the midline and extend inferiorly to the apex of the heart.EsophagusEsophagusThe esophagus should be contoured from the beginning at the level just below the cricoid to its entrance to the stomach at GE junction.The esophagus will be contoured using mediastinal window/level on CT to corr

6、espond to the mucosal,submucosa,and all muscular layers out to the fatty adventitia.SpinalcordSpinal CanalThe spinal cord will be contoured based on the bony limits of the spinal canal.The spinal cord should be contoured starting at the level just below cricoid(base of skull for apex tumors)and cont

7、inuing on every CT slice to the bottom of L2.Neuroformanines should not be included.BrachialplexBrachial PlexusThis is only required for patients with tumors of upper lobes.Only the ipsilateral brachialplex is required.This will include the spinal nerves exiting the neuroforamine from top of C5 to t

8、op of T2.In contrast to prior RTOG lung studies of contouring the major trunks of the brachial plexus with inclusion of subclavian and axillary vessels,this trial requests contouring the nerves according to the CT anatomy on every other CT slice.The structure should extend at least 3 cm above the PT

9、V.第三页,共一百零九页。4RTOG 1106 Optional OARsStructure DescriptionStructure definition and contouring instructionsPericardPericardiumThe structure of pericardium includes pericardial fatty tissue,part of great vessels,normal recesses,pericardial effusion(if applicable)and heart chambers.Pericardium starts a

10、t one slice above the top of aortic arch,ends at the last slice of heart apex at diaphragm.Pericardium includes the heart.GreatvesAortaSVCIVCPVPAGreat vesselsAortaSuperior vena cavaInferior vena cavapulmonary veinpulmonary artery The great vessels should be contoured separately from the heart,using

11、mediastinal windowing to correspond to the vascular wall and all muscular layers out to the fatty adventitia(5 mm from the contrast enhanced vascular wall).The great vessel should be contoured starting at least 3 cm above the superior extent of the PTV and continuing on every CT slice to at least 3

12、cm below the inferior extent of the PTV.For right sided tumors,SVC will be contoured,and for left sided tumors,the aorta will be contoured.The ipsilateral PA will be delineated for tumor of either side.PbtreeProximal Bronchial TreeThis structure includes the distal 2 cm of the trachea,the carina,the

13、 right and left mainstem bronchi,the right and left upper lobe bronchi,the intermedius bronchus,the right middle lobe bronchus,the lingular bronchus,and the right and left lower lobe bronchi.CW2cmChest wall 2 cm outside of lungChest wall can be autosegmented from the ipsilateral lung with a 2-cm exp

14、ansion in the lateral,anterior,and posterior directions.Anteriorly and medially,it ends at the edge of the sternum.Posteriorly and medially,it stops at the edge of the vertebral body with inclusion of the spinal nerve root exit site.CW2cm which include intercostal muscles,nerves exclude vertebrate b

15、odies,sternum and skin.This can be accomplished through auto-expansion of the ipsilateral lung(within 3 cm range of PTV).第四页,共一百零九页。5结构构 描述结构定义和勾画说明肺肺双肺 PreGTV(composite of CT1GTV and PETMTV)双肺勾画需要在肺窗勾画.左右肺分开勾画但作为一个器官来评价计量学。所有膨胀的、萎陷的纤维化的气肿的均应勾画,肺门区的小血管应包括在内。然而,preGTV该结构不应包括肺门、气管/大的支气管。心心脏心脏&心包 心脏的勾画

16、紧贴心包.上方即心底从肺静脉的下缘开始越过中线延伸到心尖底部.heart.食食管管 食管食管的勾画从环状软骨下缘开始到进入腹腔处的食管胃连接处.在CT纵膈窗勾画食管,以区别粘膜/粘膜下层肌层和外膜的脂肪组织。脊脊髓髓 椎管 脊髓的勾画基于椎管的骨性限制。脊髓的勾画从环状软骨下缘开始(肺尖肿瘤从颅底)依次勾画每一张层面直至L2。椎间孔不应包括在内。臂臂丛 臂丛 臂丛的勾画仅仅在上叶肿瘤时勾画。仅仅同侧臂丛神经需要勾画。范围包括C5上缘到T2上缘从椎间孔穿出的脊神经。不同于先前的勾画包括锁骨下和腋血管在内的臂丛主干的RTOG肺癌研究,该研究要求在CT每一层面上依据解剖来勾画。臂丛至少勾画至PTV上

17、3cm。第五页,共一百零九页。6结构描述结构定义与勾画说明心包心包心包包括心包脂肪组织、部分大血管、正常凹陷、心包积液(如果有的话)和心室腔。心包从主动脉弓上缘开始到膈上心尖的最后一层结束。心包包括心脏。大血管(主动脉上腔静脉下腔静脉肺静脉肺动脉)大血管(主动脉、上腔静脉、下腔静脉、肺静脉、肺动脉)大血管应与心脏分开勾画在,在纵隔窗将血管壁和肌层与外膜脂肪组织(对比剂增强后的血管壁外5mm)区别。大血管勾画至少从PTV上3cm开始,依次勾画直至PTV下3cm。对于右侧的肿瘤上腔静脉需要勾画,左侧肿瘤主动脉需要勾画,任意一侧的肿瘤,肺动脉均需勾画。近端支气管树近端支气管树该结构包括气管远端2cm

18、、隆突、双侧主支气管、左右上叶支气管、中间叶支气管、右中叶支气管、舌叶支气管、左右下叶支气管。胸壁2cm 肺外胸壁2cm 胸壁可以自动从同侧肺向外、前、后扩2cm来勾画。前内界为胸骨边缘。后内界为椎体边缘包括脊神经根穿出处。2cm的胸壁包括肋间肌肉、神经,不包括椎体、胸骨、皮肤。可以通过同侧肺自动外扩来完成(PTV3cm范围内)第六页,共一百零九页。7Atlas of lung,esophagus,and spinal cord 肺、食管肺、食管(shgun)、脊髓勾画、脊髓勾画 Int J Radiat Oncol Biol Phys.2011 81(5):1442-57第七页,共一百零九页

19、。8第八页,共一百零九页。9Esophagus starts at the level of cricoidLung is visible now of the left apex食管食管(shgun)从环状软骨开始,此时左侧肺尖可见从环状软骨开始,此时左侧肺尖可见Spinal cord should also start at this level just below the cricord or from the base of skull C1 if scan is available,particularly when the tumors involve neck or apex.

20、脊髓亦应从环状软骨下一层开始,或脊髓亦应从环状软骨下一层开始,或从颅底从颅底C1脊髓可见时开始,尤其是当肿瘤侵犯脊髓可见时开始,尤其是当肿瘤侵犯(qnfn)颈部和肺尖时。颈部和肺尖时。Lung第九页,共一百零九页。10The structure of spinal cord should include the entire spinal canal to decrease contouring variations.脊髓脊髓(j su)应该包括整个椎管,且向下勾画的轮廓在变化应该包括整个椎管,且向下勾画的轮廓在变化Esophagus and lung continue食管食管(shgun)和

21、肺继续向下勾画和肺继续向下勾画Spinal cord 第十页,共一百零九页。11Esophagus,lung and cord continueGreat vessels delineation is recommended,but not mandated.大血管、近端支气管推荐勾画大血管、近端支气管推荐勾画(guhu)但不强求但不强求SVC=superior vena cavaProximal bronchial tree delineation is recommended,but not mandated.Proximal Bronchial Tree第十一页,共一百零九页。12Eso

22、phagus,lung and cord continueSVC=superior vena cavagreat vessels start from the level of aortic arch大血管从主动脉弓大血管从主动脉弓(zhdngmigng)层面开始层面开始Proximal bronchial tree starts at 2 cm above carina近端支气管树从隆突上近端支气管树从隆突上2cm开始开始(kish)第十二页,共一百零九页。13Esophagus,lung and cord continueand great vessels,proximal bronchi

23、al treeAA=ascending aorta升主动脉,PA=pulmonary artery肺动脉,DA=descending aorta降主动脉,SVC=superior vena cava上腔静脉(jngmi)第十三页,共一百零九页。14Esophagus,lung,cord,great vessels and proximal bronchial treeAA=ascending aorta,PA=pulmonary artery,DA=descending aorta,SVC=superior vena cava第十四页,共一百零九页。15Esophagus,lung,cord,

24、great vessels and proximal bronchial treeAA=ascending aorta,PA=pulmonary artery,DA=descending aorta,SVC=superior vena cava第十五页,共一百零九页。16Esophagus,lung,cord,great vessels and proximal bronchial tree continueAA=ascending aorta,PA=pulmonary artery,DA=descending aorta,SVC=superior vena cava第十六页,共一百零九页。1

25、7AA=ascending aorta,PA=pulmonary artery,DA=descending aorta,SVC=superior vena cavaEsophagus,lung,cord,great vessels and proximal bronchial tree 第十七页,共一百零九页。18Esophagus,lung,cord continueDA=descending aorta第十八页,共一百零九页。19Esophagus ends at gastric-esophageal junction,Lung and cord continue IVC=inferior

26、 vena cava下腔静脉下腔静脉(jngmi),DA=descending aorta第十九页,共一百零九页。20Lung ends,cord continues until the bottom of L2 Vertebral body肺结束,脊髓肺结束,脊髓(j su)继续直到继续直到L2椎体椎体IVC=inferior vena cava,DA=descending aorta第二十页,共一百零九页。21Atlas for Brachial Plexus臂丛勾画臂丛勾画(guhu)第二十一页,共一百零九页。22Locating the Brachial Plexus定位定位(dngw

27、i)臂丛臂丛Vein,artery,and nerve(VAN,anterior to posterior)will go over the 1st rib and under the clavicle静脉、动脉、神经(VAN,后前位)从第1肋和锁骨间经过Using coronal images,find the plane where vascular/nerve structures(tubes and wires)pass between the 1st rib and clavicle用冠状位图像,找到血管神经穿过第1肋和锁骨处的层面Roughly contour these neur

28、o-vascular tissues in this coronal plane(as shown in yellow)在冠状位上粗步勾画这些(zhxi)神经血管组织You will use these rough contours in the next step下一步要用到粗步勾画的轮廓1st ribclavicleTimmermans Trick-1第二十二页,共一百零九页。23Locating the Brachial Plexus Project coronal contours onto axial images(yellow points shown on axial image

29、)将冠状位勾画的轮廓投影到轴位In the region between the projected points,identify the VAN on either side.Contour the“N”as the root(s)of the brachial plexus将所投影的点之间的区域内在每一层内找到血管神经,勾画出神经作为臂丛的神经根Note:Finding the brachial plexus on the uninvolved side will help in finding it on the involved side找到不涉及臂丛的层面有助于找到臂丛Note:I

30、V contrast greatly facilitates this task(see contrast in artery)静脉(jngmi)用对比剂用利于勾画V VA AN NTimmermans Trick-1第二十三页,共一百零九页。24Brachial plexus starts between C4 C5臂丛从臂丛从C4C5开始开始(kish)第二十四页,共一百零九页。25第二十五页,共一百零九页。26第二十六页,共一百零九页。27第二十七页,共一百零九页。28第二十八页,共一百零九页。29第二十九页,共一百零九页。30第三十页,共一百零九页。31第三十一页,共一百零九页。32V

31、einArteryNerve第三十二页,共一百零九页。33Brachial plexus not visible any more第三十三页,共一百零九页。34PBT should include the distal 2 cm of the trachea,the carina,the right and left mainstem bronchi,the right and left upper lobe bronchi,the intermedius bronchus,the right middle lobe bronchus,the lingular bronchus,and the

32、 right and left lower lobe bronchi(a,b,c,d,e,f,g in the figure)PBT应该(ynggi)包括器官远端2cm、隆突、左右主支气管、左右上叶支气管、中间支气管、右中叶支气管、舌叶支气管、和左右下叶支气管。Proximal Bronchial Tree(PBT)近端支气管近端支气管树树PBT can be contoured by autosegmenting the airspace of the central airway with 3 mm expansion(2 mm for lobar bronchus,3 mm for ma

33、in bronchus,4 mm for trachea)第三十四页,共一百零九页。35Proximal Bronchial TreeThe proximal bronchial tree can be contoured using mediastinal windows on the CT scan to correspond to the mucosal,submucosa,and cartilage rings and airway channels associated with these structures.It can be contoured as one structur

34、e,including the most inferior 2 cm of distal trachea and the proximal airways of both sides.Contouring the lobar bronchi should end immediately at the level of a segmental bifurcation.PBT用CT扫描的纵隔窗勾画,可以显示(xinsh)粘膜、粘膜下、软骨环、气道及相关结构。作为一个结构来勾画,包括气管最远端2层cm和双侧临近气道。叶支气管的勾画应该在段支气管分叉处结束。Recommendation based o

35、n Timmerman et al for RTOG 0236 and RTOG 0618,Bezjak et al for RTOG 0813 第三十五页,共一百零九页。36PBT starts at 2 cm above carinaPBT从隆突上从隆突上2cm开始开始(kish)第三十六页,共一百零九页。37Proximal Bronchus Tree continues第三十七页,共一百零九页。38 Proximal Bronchus Tree continues第三十八页,共一百零九页。39Proximal Bronchus Tree Continues第三十九页,共一百零九页。40

36、Proximal Bronchus Tree continues第四十页,共一百零九页。41第四十一页,共一百零九页。42第四十二页,共一百零九页。43第四十三页,共一百零九页。44第四十四页,共一百零九页。45第四十五页,共一百零九页。46第四十六页,共一百零九页。47第四十七页,共一百零九页。48第四十八页,共一百零九页。49第四十九页,共一百零九页。50第五十页,共一百零九页。51第五十一页,共一百零九页。52Proximal Bronchus Tree Ends at the level of lobar bronchus bifurcatinginto segmental bronc

37、hus第五十二页,共一百零九页。53Chest Wall ContoursChest wall can be autosegmented from the ipsilateral lung with a 2-cm expansion in the lateral,anterior,and posterior directions.Anteriorly and medially,it ends at the edge of the sternum.Posteriorly and medially,it stops at the edge of the vertebral body with in

38、clusion of the spinal nerve root exit site.胸壁可以自动从同侧肺向外、前、后扩2cm来勾画(guhu)。前内界为胸骨边缘。后内界为椎体边缘包括脊神经根穿出处。This recommendation was:based on Kong et al,Int J Radiat Oncol Biol Phys.2010 Oct 7.Epub ahead of printSupported by“CW2cm consistently enabled better prediction of CW toxicity than CW3cm”in Mutter et

39、al,Int J Radiat Oncol Biol Phys.2011 Aug 23.Epub ahead of print第五十三页,共一百零九页。54Chest Wall(CW)Chest wallCW contouring starts at 3 cm above the PTV胸壁从PTV上3cm开始(kish)勾画CW refers to CW2cm which include intercostal muscles,nerves exclude vertebral bodies,sternum and skin.This can be accomplished through a

40、uto-expansion of the ipsilateral lung(within 3 cm range of PTV).2cm的胸壁包括肋间肌肉、神经,不包括椎体、胸骨、皮肤。可以(ky)通过同侧肺自动外扩来完成。第五十四页,共一百零九页。55Chest Wall The superior end of PTVPTVCW refers to CW2cm which include intercostal muscles,nerves exclude vertebral bodies,sternum and skin.第五十五页,共一百零九页。56Chest WallThe superi

41、or end of GTVGTVPTVCW refers to CW2cm which include intercostal muscles,nerves exclude vertebral bodies,sternum and skin.第五十六页,共一百零九页。57Chest WallCW refers to CW2cm which include intercostal muscles,nerves exclude vertebral bodies,sternum and skin.Chest wall contours around GTV.第五十七页,共一百零九页。58Chest

42、WallThe inferior end of PTV3 cm below PTV CW refers to CW2cm which include intercostal muscles,nerves exclude vertebral bodies,sternum and skin.CW ends at 3cm from the inferior edge of PTV.胸壁在PTV下3cm结束(jish)。第五十八页,共一百零九页。59Pericardium/Heart,Great Vessels,Heart Chambers,and Normal Pericardial Recesse

43、s心包(xnbo)/心脏、大血管、心腔、正常心包凹陷 Feng-Ming(Spring)Kong(RTOG),Leslie Quint(ACRIN),Jeffrey Bradley(RTOG),Suresh Senan(EORTC),Ritsuko Komaki(RTOG),Laurie Gaspar(SWOG),Luying Xu(UM),Chengbo Han(UM),Jun Liu(UM),Weili Wang(UM),Robin Marsh(UM),Randall Ten Haken(UM),Charles Thomas(SWOG),Jeffrey Bogart(CALGB),Mitc

44、hell Machtay(RTOG)第五十九页,共一百零九页。60Pericardium,normal recesses and heart chambers心包(xnbo)、正常凹陷和心腔The structure of pericardium includes pericardial fatty tissue,part of great vessels,normal recesses,pericardial effusion(if applicable)and heart chambers.心包的结构(jigu)包括心包脂肪组织、部分大血管、正常凹陷、心包积液和心腔。第六十页,共一百零九页

45、。61Anatomy of PericardiumPericardial sac and normal recesses第六十一页,共一百零九页。62Pericardial Normal Recesses Groell et al,Radiology,1999Vesely et al,1986第六十二页,共一百零九页。63AAAA=ascending aorta,SVC=superior vena cavaSVC第六十三页,共一百零九页。64AAPosterior superior anterior recesses(pSAR)AA=ascending aorta,V=superior ven

46、a cavaSVC第六十四页,共一百零九页。65SVCAADAAA=ascending aorta,DA=descending aorta,SVC=superior vena cava第六十五页,共一百零九页。66AAVDAAnterior superior aorta recess(aSAR)AA=ascending aorta,DA=descending aorta,SVC=superior vena cavaPosterior superior aorta recess(pSAR)Pericardium第六十六页,共一百零九页。67AADAAASVCPAAA=ascending aort

47、a,DA=descending aorta,SVC=superior vena cava,PA=pulmonary arteryPericardiumAnterior superior aorta recess(aSAR)Posterior superior aorta recess(pSAR)第六十七页,共一百零九页。68MPADAAAAA=ascending aorta,DA=descending aorta,MPA=main pulmonary arteryPericardiumPericardiumPericardium第六十八页,共一百零九页。69DAAASVCPALALeft pu

48、lmonic recess(LPR)Right superior aortic recess(rSAR)AA=ascending aorta,DA=descending aorta,V=superior vena cava,PA=main pulmonary artery,PA=right pulmonary artery,LA=left atriumPericardiumPericardium第六十九页,共一百零九页。70DAAASVCLARAMPAEPericardiumPosterior Pericardial recess(PPR)PericardiumPericardiumRight

49、 pulmonic recess(RPR)RA=right atrium心房(xnfng),AA=aortic arch,LV=left ventricle,LA=Left atrium,MPA=main pulmonary artery,DA=descending aorta,E=esophagus第七十页,共一百零九页。71DAAALARARVELVPericardiumPericardiumPericardiumOblique sinus(OS)RA=right atrium,RV=right ventricle心室(xnsh),LV=left ventricle,LA=Left atr

50、ium,AA=aortic arch,DA=descending aorta,E=esophagus第七十一页,共一百零九页。72PericardiumPericardiumRVLVLARA=right atrium,RV=right ventricle,LV=left ventricle,LA=Left atrium,AA=Ascending AortaRAAA第七十二页,共一百零九页。73PericardiumPericardiumPericardium effusion(PEFF)RVLVDALARARA=right atrium,RV=right ventricle,LV=left v

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