The document proposes a real-time ultra-wideband (UWB) position tracking system for an intravascular ultrasound (IVUS) catheter. It would involve placing a simple RF beacon inside the IVUS catheter and a more complex RF receiver outside the body. Using time of arrival measurements, the system could accurately track the catheter's position during cardiovascular procedures. It relies on proven low-cost UWB technologies and could provide additional benefits like transmitting data from sensors on the catheter. The system would allow minimally invasive real-time position tracking during crucial surgical interventions.

1. PROPOSED UWB REAL-TIMEPROPOSED UWB REAL-TIME
POSITION TRACKING SYSTEM FOR APOSITION TRACKING SYSTEM FOR A
CARDIOLOGICAL IVUS CATHETERCARDIOLOGICAL IVUS CATHETER
D. FOTIADIS, A. ASTARAS, K. PAPATHANASIOU, P. BAMIDIS, A.
KALFAS
ARISTOTLE UNIVERSITY OF THESSALONIKI
SCHOOL OF MEDICINE
LABORATORY OF MEDICAL INFORMATICS
THESSALONIKI - GREECE

2. Presentation OutlinePresentation Outline
 Position tracking application fieldsPosition tracking application fields
 Position tracking for biomedical engineeringPosition tracking for biomedical engineering
applicationsapplications
 Proposed implementationProposed implementation
 ConclusionConclusion
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

3. Position tracking application fieldsPosition tracking application fields
 MilitaryMilitary
 AnimationAnimation
 RoboticsRobotics
 Heavy industryHeavy industry
 GamingGaming
 AutomotiveAutomotive
 MeteorologyMeteorology
 Biomedical engineeringBiomedical engineering
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

4. Position determination and trackingPosition determination and tracking
technologies in biomedical engineeringtechnologies in biomedical engineering
 Low frequency Electromagnetic (EM) wave basedLow frequency Electromagnetic (EM) wave based
systemssystems
 Inertial sensor based systemsInertial sensor based systems
 RF based systemsRF based systems
 Ultra Wideband (UWB) systemsUltra Wideband (UWB) systems
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

5. Low frequency Electromagnetic (EM)Low frequency Electromagnetic (EM)
wave based systemswave based systems
 Short distance coverage (<2m)Short distance coverage (<2m)
 Transmitted signal frequency in the order of someTransmitted signal frequency in the order of some
kHzkHz
 Low Hardware implementation complexityLow Hardware implementation complexity
 High Algorithmic design complexityHigh Algorithmic design complexity
 mm level tracking accuracymm level tracking accuracy
 Bad interference immunity from metal surfacesBad interference immunity from metal surfaces
such as medical equipmentsuch as medical equipment
 High costHigh cost
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

6. Inertial sensor based systemsInertial sensor based systems
 Micro-electronic mechanical systems (MEMS)Micro-electronic mechanical systems (MEMS)
 AccelerometersAccelerometers
 GyroscopesGyroscopes
 Immunity to external electromagnetic fieldsImmunity to external electromagnetic fields
 Medium accuracyMedium accuracy
 Miniaturization issueMiniaturization issue
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

7. RF based systemsRF based systems
 RFID tagsRFID tags
 WLANWLAN
 BluetoothBluetooth
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

8. Ultra Wideband (UWB) systemsUltra Wideband (UWB) systems
““A communication system which utilizes a signalA communication system which utilizes a signal
whose 10dB bandwidth is greater than 25% of itswhose 10dB bandwidth is greater than 25% of its
center frequency or whose absolute bandwidth iscenter frequency or whose absolute bandwidth is
more than 500MHz”more than 500MHz”
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

9. Ultra Wideband (UWB) systemsUltra Wideband (UWB) systems
 Impulse UWB (I-UWB). Most commonly, nonImpulse UWB (I-UWB). Most commonly, non
modulated short pulses.modulated short pulses.
 Multi Carrier UWB (MC-UWB). Multiple modulatedMulti Carrier UWB (MC-UWB). Multiple modulated
carriers.carriers.
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

10. Ultra Wideband (UWB) systemsUltra Wideband (UWB) systems
 ResolutionResolution ΔΔr = c / 2Br = c / 2B
 ToA, TDoA or AoA position estimation methods most often usedToA, TDoA or AoA position estimation methods most often used
 Antenna sizeAntenna size
 Health safety issuesHealth safety issues
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

11. Proposed implementationProposed implementation
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

12. Proposed implementationProposed implementation
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

13. Proposed implementationProposed implementation
 Deliberate design choiceDeliberate design choice  simple RF beacon inside IVUS catheter, more complicated RFsimple RF beacon inside IVUS catheter, more complicated RF
receiver station outside bodyreceiver station outside body
 Not a broadband data transmission systemNot a broadband data transmission system
 Short operating rangeShort operating range
 Low PRF + low E.I.R.P.Low PRF + low E.I.R.P.  very low power spectral density levelvery low power spectral density level
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

14. Proposed implementationProposed implementation
 ToA position estimation methodToA position estimation method
 Electrical or magnetic small sized antennas can be integratedElectrical or magnetic small sized antennas can be integrated
inside IVUS catheter caseinside IVUS catheter case
 Antenna on Chip as an alternativeAntenna on Chip as an alternative
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

15. ConclusionConclusion
 Technological feasibilityTechnological feasibility
 High precisionHigh precision
 Relies on proven, relatively low-cost technologiesRelies on proven, relatively low-cost technologies
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

16. ConclusionConclusion
 Minimally invasive addition to a crucial surgicalMinimally invasive addition to a crucial surgical
intervention procedureintervention procedure
 Carrier signal could also carry data, e.g. fromCarrier signal could also carry data, e.g. from
bioanalytical MEMS sensorsbioanalytical MEMS sensors
DIMITRIS FOTIADISDIMITRIS FOTIADIS
PROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETERPROPOSED UWB REAL-TIME POSITION TRACKING SYSTEM FOR A CARDIOLOGICAL IVUS CATHETER

17. THANK YOU VERY MUCHTHANK YOU VERY MUCH
QUESTIONS?QUESTIONS?
Contact info.: Dimitris Fotiadis
dfotiadis@med.auth.gr
http://lomiweb.med.auth.gr