Task Group 142 report QA表格.docx

Task Group 142 report: Quality assurance of medical acceleratorsTG142 QA的推薦規(guī)范，強烈推薦各個單位物理師根據(jù)設(shè)備的歷史情況及使用情況，自身開展的技術(shù)與設(shè)備，數(shù)據(jù)分析，靈活調(diào)整QA的頻率及容差值，制定相應(yīng)的QA流程與制度。TG142報告里面沒有關(guān)于VMAT、 Tomotherapy（TG-148）, CyberKnifeTomotherapy（TG-148） 的QA項目。 TABLE I. Daily（日檢）Machine-type toleranceProcedureNon-IMRTIMRTSRS/SBRTDosimetry（劑量）X-ray output constancy (all energies)（X線輸出劑量穩(wěn)定性）Electron output constancy (weekly, 3% except for machines with unique e-monitoring requiring daily) （電子線輸出劑量穩(wěn)定性）3%Mechanical（機械）Laser localization（激光燈定位）2 mm1.5 mm1 mmDistance indicator _ODI_ iso（等中心處光距尺）2 mm2 mm2 mmCollimator size indicator（準直器大小顯示）2 mm2 mm1 mmSafety（安全）Door interlock (beam off)（門連鎖）FunctionalDoor closing safety（門閉合）FunctionalAudiovisual monitor(s) （視聽監(jiān)控設(shè)備）FunctionalStereotactic interlocks (lockout)（立體定向連鎖）NANAFunctionalRadiation area monitor (if used)（放射治療區(qū)域監(jiān)控設(shè)備）FunctionalBeam on indicator（出束顯示指示）FunctionalTABLE . Monthly（月檢）Machine-type toleranceProcedureNon-IMRTIMRTSRS/SBRTDosimetry（劑量）X-ray output constancy（X線輸出劑量穩(wěn)定性）Electron output constancy（電子線輸出劑量穩(wěn)定性）2%Backup monitor chamber constancy（備用電離室劑量監(jiān)測穩(wěn)定性）Typical dose ratea output constancy（主劑量率輸出穩(wěn)定性）NA2% IMRT dose rate2% stereo dose rate, MUPhoton beam profile constancy（光子線劑量曲線穩(wěn)定性）1%Electron beam profile constancy（電子線劑量曲線穩(wěn)定性）1%Electron beam energy constancy（電子線能量穩(wěn)定性）2%/2 mmMechanical（機械）Light/radiation field coincidence（光射野一致性）2 mm or 1% on a sideLight/radiation field coincidence(asymmetric) （光射野一致性非對稱野）1 mm or 1% on a sideDistance check device for lasers compared withfront pointer（激光燈與前指針距離檢測裝置）1mmGantry/collimator angle indicators( cardinal angles)(digital only)（機架、準則角度顯示：僅數(shù)字）1.0Accessory trays(i.e., port film graticle tray)（托架附件）2 mmJaw position indicators(symmetric)（鎢門位置顯示：對稱）2 mmJaw position indicators(asymmetric) （鎢門位置顯示：非對稱）1 mmCross-hair centering(walkout)（十字叉絲中心）1 mmTreatment couch position indicators（治療床位置顯示）2 mm/12 mm/11 mm/0.5Wedge placement accuracy（楔形板位置準確性）2 mmCompensator placement accuracy（補償器位置準確性）1 mmLatching of wedges, blocking tray（楔形板連鎖、托架連鎖）FunctionalLocalizing lasers（定位激光燈）2 mm1 mm1 mmSafety（安全）Laser guard-interlock test（激光防護連鎖測試）FunctionalRespiratory gating（呼吸門控）Beam output constancy（劑量輸出穩(wěn)定性）2%Phase, amplitude beam control（呼吸時相、振幅射線控制）FunctionalIn-room respiratory monitoring system（室內(nèi)呼吸監(jiān)控系統(tǒng)）FunctionalGating interlock（門控連鎖）FunctionalTABLE . Annual（年檢）Machine-type toleranceProcedureNon-IMRTIMRTSRS/SBRTDosimetry（劑量）X-ray flatness change from baseline（X線平坦度與基準值的改變）1%X-ray symmetry change from baseline（X線對稱性與基準值的改變）1%Electron flatness change from baseline（電子線平坦度與基準值的改變）1%Electron symmetry change from baseline（電子線對稱性與基準值的改變）1%SRS arc rotation mode(range: 0.510 MU/deg)（SRS 弧形旋轉(zhuǎn)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線/電子線輸出量校準）1%(absolute)Spot check of field size dependent output factors for x ray(two or more FSs)（X線射野輸出因子抽查：2個或更多的野面積）2% for field size 0.5 cm/ sLeaf position accuracy (IMRT)（葉片位置準確性）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（年檢）MLC transmission (average of leaf and interleaf Transmission), all energies（所有能量MLC運動：葉片與插片運動平均值）0.5% from baselineLeaf position repeatability（葉片位置重復(fù)性）1.0 mmMLC spoke shot（MLC條狀野照射）1.0 mm radiusCoincidence of light field and x-ray field (all energies)（光野與輻射野一致性）2.0 mmSegmental IMRT (step and shoot) test（分段式IMRT檢測）0.35 cm max. error RMS, 95% of error counts 0.35 cmMoving window IMRT (four cardinal gantry angles)（移動式IMRT：四個基本機架角）0.35 cm max. error RMS, 95% of error counts 0.35 cmTABLE VI. Imaging.（影像）Application-type toleranceProcedurenon-SRS/SBRTSRS/SBRTDaily（日檢）Planar kV and MV (EPID) imagingCollision interlocks（碰撞連鎖）FunctionalFunctionalPositioning/repositioning（定位/復(fù)位）2 mm1 mmImaging and treatment coordinate coincidence(single gantry angle)（影像與治療坐標一致性）2 mm1 mmCone-beam CT (kV and MV)Collision interlocks（碰撞連鎖）FunctionalFunctionalImaging and treatment coordinate coincidence（影像與治療坐標一致性）2 mm1 mmPositioning/repositioning（定位/復(fù)位）1 mm1 mmMonthly（月檢）Planar MV imaging (EPID)Imaging and treatment coordinate coincidence(four cardinal angles)（影像與治療坐標一致性：四個基本角度）2 mm1 mmScaling（縮放比例）2 mm2 mmSpatial resolution（空間分辨率）BaselineBaselineContrast（對比度）BaselineBaselineUniformity and noise（均勻性和噪聲）BaselineBaselinePlanar kV imagingImaging and treatment coordinate coincidence(four cardinal angles)（影像與治療坐標一致性：四個基本角度）2 mm1 mmScaling（縮放比例）2 mm2 mmSpatial resolution（空間分辨率）BaselineBaselineContrast（對比度）BaselineBaselineUniformity and noise（均勻性和噪聲）BaselineBaselineCone-beam CT (kV and MV)Geometric distortion（幾何形變）2 mm1 mmSpatial resolution（空間分辨率）BaselineBaselineContrast（對比度）BaselineBaselineHU constancy（HU值穩(wěn)定性）BaselineBaselineUniformity and noise（均勻性和噪聲）BaselineBaselineAnnual（年