Task Group 142 report QA表格.docx

Task Group 142 report: Quality assurance of medical acceleratorsTG142 QA的推荐规范，强烈推荐各个单位物理师根据设备的历史情况及使用情况，自身开展的技术与设备，数据分析，灵活调整QA的频率及容差值，制定相应的QA流程与制度。TG142报告里面没有关于VMAT、 Tomotherapy（TG-148）, CyberKnifeTomotherapy（TG-148） 的QA项目。 TABLE I. Daily（日检）Machine-type toleranceProcedureNon-IMRTIMRTSRS/SBRTDosimetry（剂量）X-ray output constancy (all energies)（X线输出剂量稳定性）Electron output constancy (weekly, 3% except for machines with unique e-monitoring requiring daily) （电子线输出剂量稳定性）3%Mechanical（机械）Laser localization（激光灯定位）2 mm1.5 mm1 mmDistance indicator _ODI_ iso（等中心处光距尺）2 mm2 mm2 mmCollimator size indicator（准直器大小显示）2 mm2 mm1 mmSafety（安全）Door interlock (beam off)（门连锁）FunctionalDoor closing safety（门闭合）FunctionalAudiovisual monitor(s) （视听监控设备）FunctionalStereotactic interlocks (lockout)（立体定向连锁）NANAFunctionalRadiation area monitor (if used)（放射治疗区域监控设备）FunctionalBeam on indicator（出束显示指示）FunctionalTABLE . Monthly（月检）Machine-type toleranceProcedureNon-IMRTIMRTSRS/SBRTDosimetry（剂量）X-ray output constancy（X线输出剂量稳定性）Electron output constancy（电子线输出剂量稳定性）2%Backup monitor chamber constancy（备用电离室剂量监测稳定性）Typical dose ratea output constancy（主剂量率输出稳定性）NA2% IMRT dose rate2% stereo dose rate, MUPhoton beam profile constancy（光子线剂量曲线稳定性）1%Electron beam profile constancy（电子线剂量曲线稳定性）1%Electron beam energy constancy（电子线能量稳定性）2%/2 mmMechanical（机械）Light/radiation field coincidence（光射野一致性）2 mm or 1% on a sideLight/radiation field coincidence(asymmetric) （光射野一致性非对称野）1 mm or 1% on a sideDistance check device for lasers compared withfront pointer（激光灯与前指针距离检测装置）1mmGantry/collimator angle indicators( cardinal angles)(digital only)（机架、准则角度显示：仅数字）1.0Accessory trays(i.e., port film graticle tray)（托架附件）2 mmJaw position indicators(symmetric)（钨门位置显示：对称）2 mmJaw position indicators(asymmetric) （钨门位置显示：非对称）1 mmCross-hair centering(walkout)（十字叉丝中心）1 mmTreatment couch position indicators（治疗床位置显示）2 mm/12 mm/11 mm/0.5Wedge placement accuracy（楔形板位置准确性）2 mmCompensator placement accuracy（补偿器位置准确性）1 mmLatching of wedges, blocking tray（楔形板连锁、托架连锁）FunctionalLocalizing lasers（定位激光灯）2 mm1 mm1 mmSafety（安全）Laser guard-interlock test（激光防护连锁测试）FunctionalRespiratory gating（呼吸门控）Beam output constancy（剂量输出稳定性）2%Phase, amplitude beam control（呼吸时相、振幅射线控制）FunctionalIn-room respiratory monitoring system（室内呼吸监控系统）FunctionalGating interlock（门控连锁）FunctionalTABLE . Annual（年检）Machine-type toleranceProcedureNon-IMRTIMRTSRS/SBRTDosimetry（剂量）X-ray flatness change from baseline（X线平坦度与基准值的改变）1%X-ray symmetry change from baseline（X线对称性与基准值的改变）1%Electron flatness change from baseline（电子线平坦度与基准值的改变）1%Electron symmetry change from baseline（电子线对称性与基准值的改变）1%SRS arc rotation mode(range: 0.510 MU/deg)（SRS 弧形旋转模式）NANAMonitor units set vs delivered:1.0 MU or 2% (whichever is greater)Gantry arc set vs elivered:1.0 or 2% (whichever is greater)X-ray/electron output calibration(TG-51)（X线/电子线输出量校准）1%(absolute)Spot check of field size dependent output factors for x ray(two or more FSs)（X线射野输出因子抽查：2个或更多的野面积）2% for field size 0.5 cm/ sLeaf position accuracy (IMRT)（叶片位置准确性）1 mm for leaf positions of an IMRT field for four cardinal gantry angles. (Picket fence test may be used,test depends on clinical planning-segment size)Annually（年检）MLC transmission (average of leaf and interleaf Transmission), all energies（所有能量MLC运动：叶片与插片运动平均值）0.5% from baselineLeaf position repeatability（叶片位置重复性）1.0 mmMLC spoke shot（MLC条状野照射）1.0 mm radiusCoincidence of light field and x-ray field (all energies)（光野与辐射野一致性）2.0 mmSegmental IMRT (step and shoot) test（分段式IMRT检测）0.35 cm max. error RMS, 95% of error counts 0.35 cmMoving window IMRT (four cardinal gantry angles)（移动式IMRT：四个基本机架角）0.35 cm max. error RMS, 95% of error counts 0.35 cmTABLE VI. Imaging.（影像）Application-type toleranceProcedurenon-SRS/SBRTSRS/SBRTDaily（日检）Planar kV and MV (EPID) imagingCollision interlocks（碰撞连锁）FunctionalFunctionalPositioning/repositioning（定位/复位）2 mm1 mmImaging and treatment coordinate coincidence(single gantry angle)（影像与治疗坐标一致性）2 mm1 mmCone-beam CT (kV and MV)Collision interlocks（碰撞连锁）FunctionalFunctionalImaging and treatment coordinate coincidence（影像与治疗坐标一致性）2 mm1 mmPositioning/repositioning（定位/复位）1 mm1 mmMonthly（月检）Planar MV imaging (EPID)Imaging and treatment coordinate coincidence(four cardinal angles)（影像与治疗坐标一致性：四个基本角度）2 mm1 mmScaling（缩放比例）2 mm2 mmSpatial resolution（空间分辨率）BaselineBaselineContrast（对比度）BaselineBaselineUniformity and noise（均匀性和噪声）BaselineBaselinePlanar kV imagingImaging and treatment coordinate coincidence(four cardinal angles)（影像与治疗坐标一致性：四个基本角度）2 mm1 mmScaling（缩放比例）2 mm2 mmSpatial resolution（空间分辨率）BaselineBaselineContrast（对比度）BaselineBaselineUniformity and noise（均匀性和噪声）BaselineBaselineCone-beam CT (kV and MV)Geometric distortion（几何形变）2 mm1 mmSpatial resolution（空间分辨率）BaselineBaselineContrast（对比度）BaselineBaselineHU constancy（HU值稳定性）BaselineBaselineUniformity and noise（均匀性和噪声）BaselineBaselineAnnual（年