RADIATION SHIELDING DESIGN 2010 - AAPM
RADIATION SHIELDING DESIGN2010ACMP 2010SAN ANTONIO, TEXAS – MAY 23, 2010DANIEL G. HARRELLSHIELDING CONSTRUCTION SOLUTIONS, INC. 2010 Shielding Construction Solutions1
2010 Shielding Construction Solutions2
THE DESIGN PROCESSRadiationSource rameters 2010 Shielding Construction Solutions3
COMMUNICATIONTHE PLAYERS1.The ClientTreatment Modality –Use and Cost2.Equipment VendorMachine Energy - Space Requirements3.ArchitectAvailable Space - Entry type - Direct, Maze, Mini Maze, Door Free4.Shielding VendorMaterial Options5.Shielding DesignerPhysicist of Record - Parameters – Applicable Codes 2010 Shielding Construction Solutions4
SHIELDING DESIGNTHE TREATMENT ROOM1.Treatment ModalityTreatment Energy, Conventional, Stereotactic, TBI, IMRT, IGRT, etc2.ComponentsIsocenter, Equipment, Primary and Secondary Barriers, Penetrations, Entry Type3.Entry TypesDirect Entry, Maze Entry, Hybrid Mini Maze, Door Free Entry, Shield Door Type4.Unique ConditionsPenetrations, Existing Shielding, Structural Obstructions, Access to Work Area5.Shielding ParametersWorkload, Design Goal, Applicable Regulations, Adjacent Occupancies, Future 2010 Shielding Construction Solutions5
TREATMENT ROOMTREATMENT MODALITYStereotacticConventional(w/o beamstopper) 2010 Shielding Construction SolutionsIMRT / IGRTTotal BodyIrradiationCyberKnifeTomoTherapy6
TREATMENT ROOMCOMPONENTS1.2.IsocenterEquipment(Manufacturer & Space)3.42Primary Barrier(Direction & Width)4.5.Secondary BarrierPenetrations31(MEP, Door)6.Entry Type(Direct, Maze, Mini Maze, Doorless) 2010 Shielding Construction Solutions567
TREATMENT ROOMCOMPONENTS1.IsocenterGraphic Image 2010 Shielding Construction Solutions18
TREATMENT ROOMCOMPONENTS1.2.IsocenterEquipment(Manufacturer & Space)3.42Primary Barrier(Direction & Width)4.5.Secondary BarrierPenetrations31(Dosimetry Passage, MEP, Door)6.Entry Type - Layout(Direct, Maze, Mini Maze, Doorless)56
TREATMENT ROOMENTRY TYPE AND LAYOUTSDirect EntryMini-Maze EntryMaze EntryDoorless Entry(double-maze)Direct EntryMini Maze EntryMaze EntryDoorless EntryDoors can be either Swing type or Sliding type
TREATMENT ROOMDOOR TYPESSliding DoorSwing Door
TREATMENT ROOM(OFTEN OVERLOOKED) UNIQUECONDITIONS1.PenetrationsDosimetry PassageMechanical OpeningsEntry way (DOOR or DOOR FREE)Skylights2.Existing ShieldingConcrete Density3.Structural ObstructionsColumns & BeamsExisting Services (Communication, Gas, Electrical, etc)4.Access, Delivery, Storage 2010 ShieldingConstructionSolutionsMovingthe materialinto place12
TREATMENT ROOM UNIQUECONDITIONSPENETRATIONS1.Dosimetry PassageBest LocationOblique Angles2.Mechanical OpeningsLocationShielding Around3.Entry WayLayout – protectionDoor Opening – Head and JambsSafety devices - interlocks4.SkylightsHow and WhenAdjacent Occupancies – and other Skylights 2010 Shielding Construction Solutions13
TREATMENT ROOM UNIQUECONDITIONSPENETRATIONSGraphic Image 2010 Shielding Construction Solutions14
TREATMENT ROOM UNIQUECONDITIONSEXISTING SHIELDING1.Existing ConcreteWhen was it placed?What Density is it?How to Verify2.Earth Backed WallsWhich Walls have EARTH?How high does it go?3.OccupancyAdjacent to the shielding wallsWhat about Beyond? Nearest full occupancy 2010 Shielding Construction Solutions15
TREATMENT ROOM UNIQUECONDITIONSEXISTING SHIELDINGGraphic Image 2010 Shielding Construction Solutions16
TREATMENT ROOM UNIQUECONDITIONSSTRUCTURAL OBSTRUCTIONS1.ColumnsWhere are they? What are they made of?How do we shield around these?2.BeamsWhere are they? What are they made of?How do we shield around these?3.Communication or Electrical ServicesCould require costly interruption and reroutingShielding around an existing service4.Special (HIDDEN) OccupanciesService TunnelsCrawl Spaces 2010 Shielding Construction Solutions17
TREATMENT ROOM UNIQUECONDITIONSSTRUCTURAL OBSTRUCTIONSGraphic Image 2010 Shielding Construction Solutions18
TREATMENT ROOM UNIQUECONDITIONSACCESS TO THE WORK AREA1.Where is the Proposed Treatment Room?All New construction with Full AccessAttached to the outside of an existing buildingTrapped in a courtyardUp on a Second Story2.Material DeliveryPIP – Trucks, Conveyors, cranesModular – Pallets, Forklifts, Pallet Jacks3.StorageFresh (Wet) Concrete can not be storedPre-Cast modular Shield Block can be storedWeather Conditions – working in the COLD and WET 2010 Shielding Construction Solutions19
TREATMENT ROOM UNIQUECONDITIONSACCESS TO THE WORK AREAGraphic Image 2010 Shielding Construction Solutions20
SHIELDING RADIATION1.Radiation TherapyRadiation ShieldingWe are treating patients with radiation therapy . . .and we are protecting people with shielding . . .2.The Sources Radiation & EquipmentInternal Radiation Therapy (Brachytherapy, LDR, HDR, Perm Implant)External Beam Radiation TherapyLinear (Cobalt, Gamma Knife)Linear Accelerators (linacs)(Varian, Elekta, Siemens, TomoTherapy, Accuray CyberKnife, Novalis,etc.)Circular Accelerators & Particle Therapy(Proton, Carbon, Cyclotron, Synchrotron) 2010 Shielding Construction Solutions21
SHIELDING PARAMETERS1.How Much Radiation Shielding? . . . the TVLThe required amount of Radiation Shielding is a direct result of yourcalculations for TVL of attenuation based on:Source Energy and Quality (primary, leakage, scatter)Patient WorkloadDistance from Isocenter to the Adjacent Areas (point of survey)Occupancy (Time) of Adjacent Areas (control, office, parking, etc.)Permissible Exposure Levels (NCRP, state and local requirements)2.Selection of Radiation Shielding MaterialBest match to Satisfy the TVL requirement (space, cost, availability)Photons and/or NeutronsFuture plans (upgrades, removability) 2010 Shielding Construction Solutions22
SHIELDING MATERIALOPTIONSDENSITY MATTERSDenseCRETE ShieldBLO CK 325CONCRETEAIR W ATER EARTHpcf 0g/cm ³ 0621001.01.62002.35 2010 Shielding Construction Solutions3.23004.04.8 5.0STEELLEAD4005006007008006.48.09.611.212.823
RADIATION SHIELDINGDENSITY MATTERSDenseCRETE ShieldBLO CK 325CONCRETEAIR W ATER EARTHpcf 0g/cm ³ 0621001.01.62002.35 2010 Shielding Construction Solutions3.23004.04.8 5.0STEELLEAD4005006007008006.48.09.611.212.824
SHIELDING THICKNESS FOR 6TVLATTENUATIONMACHINE ENERGY 2010 Shielding Construction Solutions25
SHIELDING THICKNESS FOR 6TVLATTENUATION 2010 Shielding Construction Solutions26
SHIELDING THICKNESS FOR 6TVLATTENUATION3 2010 Shielding Construction Solutions327
RADIATION SHIELDINGDenseCRETE ShieldBLO CK 325CONCRETEAIR W ATER EARTHpcf 0g/cm ³ 0621001.01.62002.35 2010 Shielding Construction Solutions3.23004.04.8 5.0STEELLEAD4005006007008006.48.09.611.212.828
RADIATION SHIELDINGMATERIAL SELECTION : BEFORE THETVL Lead & Borated PolyethyleneisocenterR ADIATION S OURCE Lead & ConcreteDenseCRETE & ShieldBLOCK ConcreteEarth BackfillS HIELDING O PTIONSRequired Shielding Attenuation [W & d TVL]Each Material has its own TVLTwice the density means half the thicknessCost of Shielding Materials (Installed) 2010 Shielding Construction Solutions29
SHIELDING DESIGNWORKSHEETSMaterial DataDensitiesTenth Value LayersDesign SketchesParametersDistancesWorksheetsSummary of DataTVL RequirementsGraphic Image 2010 Shielding Construction Solutions30
isocenterRADIATION SOURCELead & Borated PolyethyleneLead & ConcreteSHIELDING DESIGNDenseCRETE & ShieldBLOCK ConcreteEarth BackfillSHIELDING OPTIONSKNOW YOURTVLSELPSAMGraphic ImageShielding Material DataAttenuation TVLMaterial OptionsBarrier ThicknessCustom SystemsCombinationSpecial Density 2010 Shielding Construction SolutionsShielding DesignSketchShielding Worksheets31
DESIGNShielding Material DataShielding Design SketchSpecific PointsUse & OccupancyDistanceObliquityEffective ThicknessUnusual ConditionsShielding Worksheets 2010 Shielding Construction Solutions32
DESIGNShielding Material DataShielding Design SketchSpecific PointsUse & OccupancyDistanceUnusual ConditionsBeams & ColumnsPenetrationsEffective ThicknessShielding Worksheets 2010 Shielding Construction Solutions33
DESIGNATTENUATION(TVLS)Graphic ImageELPSAMShielding Material DataShielding Design SketchShielding WorksheetsLocationDescriptionBeam QualityParametersW U T P dTVL’s REQUIRED 2010 Shielding Construction SolutionsPhotonNeutron34
RADIATION SHIELDINGMATERIAL SELECTION : AFTER THETVL Lead & Borated PolyethyleneisocenterR ADIATION S OURCE Lead & ConcreteDenseCRETE & ShieldBLOCK ConcreteEarth BackfillS HIELDING O PTIONSAttenuationThickness can be determinedIMPACT can be reviewed with the ArchitectSingle material vs combination of materialsMethod of installation can be reviewed (PIP vs Modular) 2010 Shielding Construction Solutions35
RADIATION SHIELDINGOTHER CONSIDERATIONSThe Total Cost of the Shielding includes:Foundations, Installation, Finishes, Service ContractsSystem of InstallationModular vs. PIP (pumped, conveyed or craned)Manufacture (On-site vs. Pre Fabricated)Delivery & StorageAccelerated Depreciation Savings (possible)The Value of the Space (Savings) 300- 500/sq ft 2010 Shielding Construction Solutions36
RADIATION SHIELDING DESIGNMISTAKES CAN2010 HAPPEN BUT THEY NEED NOT HAPPEN TOYOU! UNDERSTAND THE PROCESS KNOW YOUR OPTIONS UNDERSTAND THEIR IMPACT DESIGN THE BEST RADIATIONSHIELDING SOLUTION FOR YOURCLIENT NOW AND INTO THEFUTURE. 2010 Shielding Construction Solutions37
RADIATION SHIELDING DESIGN2010QUESTIONS? 2010 Shielding Construction Solutions38
RADIATION SHIELDING DESIGN 2010 2010 Shielding Construction Solutions 1 ACMP 2010 SAN ANTONIO, TEXAS – MAY 23, 2010 DANIEL G. HARRELL SHIELDING CONSTRUCTION SOLUTIONS, INC. . Graphic Image. DESIGN Shielding Material Data Shielding Design Sketch Specific Points Use & Occupancy Distance Obliquity Effective Thickness Unusual Conditions
Make sure that the blank shielding wire (5) is not removed. Twist this blank wire with the shielding (4) as shown below. Figure 2.3 - Blank shielding wire and shielding braid Blank shielding wire Outer sheath (jacket) (1) Filling threads (2) Power elements (3) Copper wire shielding (4) Blank shielding wire (5) Shielding foil (6) Isolation .
Radiation Therapy Nomenclature AAPM Spring Clinical Meeting March 20, 2017 Jean M Moran, PhD, FAAPM on behalf of AAPM TG 263. AAPM Task Group 263 Disclosures Grant support from National Institute of Health, Blue Cross Blue Shield of Michigan, and Varian Medical Systems Projects with Modus Medical and ImageOwl. AAPM Task Group 263 .
and hybrid PET/CT, SPECT/CT shielding and radiation protection problems Review the TG-108 approach to designing PET/CT facilities Outline difficulties encountered in practical nuclear medicine shielding design. AAPM 2012 Summer School on Medical Imaging using Ionizing Radiation Motivation for Attention to PET/NM Shielding #HVL's Lead Thickness Required mm (in, to next 1/16) X-ray 1 .
personnel and equipment protection. Shielding must (1) protect the TF and PF coils that are essential to reactor operation (in-vessel shielding) and (2) safeguard operating personnel and the public (ex-vessel shielding). For fission reactors and accelerators, radiation can be reduced by the disposition shielding around the reactor
Radiation Protection Status of the Shielding Design for the East Area Renovation Project A. Devienne (HSE-RP), R. Froeschl (HSE-RP) East Hall under construction - 1962. Outline 3 RP Shielding Design -EDMS 2379205 29/05/2020 . Additional shielding at interface between T9/10 Zone and T9
EMI/RFI Shielding Products Tech-Etch is a global supplier of EMI/RFI shielding products for the commercial and military markets. A leader in the shielding field for over 40 years, Tech-Etch designs and manufactures both standard catalog and customized shielding products. Our complete line of shielding includes all sizes, shapes, compositions .
765 S MEDIA TECHNOLOGY Designation Properties Page Audio Audio cables with braided shielding 766 Audio Audio cables, multicore with braided shielding 767 Audio Audio cables with foil shielding, single pair 768 Audio Audio cables, multipaired with foil shielding 769 Audio Audio cables, multipaired, spirally screened pairs and overall braided shielding 770 Audio Digital audio cables AES/EBU .
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