Portable Patient Training Device for Lung Cancer Treatment


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Portable Patient Training Device for Lung Cancer Treatment

  1. 1. Portable Patient TrainingPortable Patient Training Device for Lung CancerDevice for Lung Cancer TreatmentTreatment BME 400BME 400 Thomas ChiaThomas Chia Jason EthingtonJason Ethington Brent GeigerBrent Geiger Kawai ChanKawai Chan Client: Bhudatt Paliwal, PhDClient: Bhudatt Paliwal, PhD Tiezhi Zhang, PhDTiezhi Zhang, PhD Advisor: Justin Williams, PhDAdvisor: Justin Williams, PhD
  2. 2. BackgroundBackground  Radiation Treatment forRadiation Treatment for CancerCancer  3-D Imaging of Target Tissue3-D Imaging of Target Tissue  Helical Delivery PatternHelical Delivery Pattern  Intensity ModulationIntensity Modulation RadiotherapyRadiotherapy (IMRT)(IMRT) -Multileaf Collimator (MLC)-Multileaf Collimator (MLC)  Radiation Concentrates onRadiation Concentrates on Moving Target TissueMoving Target Tissue
  3. 3. Problem StatementProblem Statement  Lung cancer radiation treatments requireLung cancer radiation treatments require stable patient breathingstable patient breathing  A repeatable breathing trainer is desiredA repeatable breathing trainer is desired  Design device to measure and displayDesign device to measure and display patient’s breathing patternpatient’s breathing pattern  Display patient’s real-time breathingDisplay patient’s real-time breathing pattern against a guiding cyclepattern against a guiding cycle
  4. 4. Client RequirementsClient Requirements Device must be small and portable Still function as a training device for used outside of treatment Used to monitor patient breathing while undergoing Tomotherapy treatment
  5. 5. Previous WorkPrevious Work Continuation from BME 301 Completed a functioning prototype Three major components: -Sensing hardware -Data acquisition -LabView program
  6. 6. Previous Work – Sensing HardwarePrevious Work – Sensing Hardware Linear potentiometer attached around chest Voltage change corresponds to chest movement 9 Volt battery and switch
  7. 7. Previous Work – User Interface andPrevious Work – User Interface and Data AcquisitionData Acquisition National Instruments PCMCIA DAQ- 6024E A/D converter Laptop with PCMCIA port and LabView 7.0
  8. 8. Previous Work – LabView SoftwarePrevious Work – LabView Software ProgramProgram Displayed breathing pattern against guiding pattern Ability to save multiple guiding patterns
  9. 9. Current Work – SensingCurrent Work – Sensing HardwareHardware Design measurement hardware as small as possible Attach only potentiometer to strap Battery and switch housed away from strap All materials must be evaluated for compatibility with radiation
  10. 10. Current Work – SensingCurrent Work – Sensing HardwareHardware Use larger strap to allow secure attachment of potentiometer to plastic mounting plate Potentiometer wire embedded in elastic portion of strap Extend wires and battery away from strap, construct smaller box
  11. 11. Current Work – PDA and DataCurrent Work – PDA and Data AcquisitionAcquisition Previous version on a laptopPrevious version on a laptop Scale the patient feedbackScale the patient feedback interface down to portable PDAinterface down to portable PDA Need a data acquisition cardNeed a data acquisition card (A/D converter) to fit inside(A/D converter) to fit inside PDAPDA
  12. 12. Current Work – PDA and DataCurrent Work – PDA and Data AcquisitionAcquisition  Asus: MyPal A620Asus: MyPal A620  Windows PocketPCWindows PocketPC  400MHz Intel XScale400MHz Intel XScale  Supports Compact FlashSupports Compact Flash (CF)(CF)  MSRP: $300MSRP: $300
  13. 13. Current Work – PDA and DataCurrent Work – PDA and Data AcquisitionAcquisition  Compact Flash DataCompact Flash Data Acquisition CardAcquisition Card  24-bit Analog Input24-bit Analog Input  Supports LabVIEW PDASupports LabVIEW PDA  MSRP: $850MSRP: $850
  14. 14. Current Work – LabView 7.1Current Work – LabView 7.1 SoftwareSoftware  Improve display of guiding cycle vs. real-Improve display of guiding cycle vs. real- time breathing patternstime breathing patterns (i.e. waveform(i.e. waveform graph)graph)  Convert to PDA format that is compatibleConvert to PDA format that is compatible with the use of Pocket PCwith the use of Pocket PC
  15. 15. Current Work – LabView 7.1Current Work – LabView 7.1 SoftwareSoftware  Compile LabView software program intoCompile LabView software program into PDA formatPDA format  Design and test in PDA emulator to mimicDesign and test in PDA emulator to mimic the actual PDA devicethe actual PDA device  Sampling rate on PDA can be 1000Sampling rate on PDA can be 1000 samples/sec+samples/sec+
  16. 16. Future WorkFuture Work  File patent application disclosureFile patent application disclosure  Contact IRB regarding human subjectsContact IRB regarding human subjects implicationsimplications  Begin testing of device outside ofBegin testing of device outside of Tomotherapy machineTomotherapy machine  Test device inside Tomotherapy machineTest device inside Tomotherapy machine
  17. 17. Special ThanksSpecial Thanks Dr. Bhudatt PaliwalDr. Bhudatt Paliwal Professor of Human Oncology & Medical PhysicsProfessor of Human Oncology & Medical Physics Director Radiation Oncology PhysicsDirector Radiation Oncology Physics Tiezhi ZhangTiezhi Zhang Assistant ResearcherAssistant Researcher Human Oncology DepartmentHuman Oncology Department Justin WilliamsJustin Williams Professor Biomedical EnginneeringProfessor Biomedical Enginneering University of Wisconsin MadisonUniversity of Wisconsin Madison Adam SweetAdam Sweet National Instruments ConsultantNational Instruments Consultant
  18. 18. Questions?Questions?