Trends In Medical Displays - Planar Systems - Adi Abileah

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    Trends In Medical Displays - Planar Systems - Adi Abileah - Presentation Transcript

    1. Trends in Medical Displays Adi Abileah Chief Scientist, Technology Group Beaverton, OR, USA
    2. Outline
      • Trends in Medical Imaging
      • Types of Medical Displays
      • AMLCD Challenges for D.I.
      • Future hospitals and Displays
      • New DI and 3D Displays
      • Summary
    3. Trends in Medical Imaging Trend Display Imaging PACS Archiving
    4. Trends in Medical imaging MR MR CT NM US US Digital Computer CT
    5. Imaging Modalities XR – X-Ray ( CR, DR ) CT – Computer Tomography Fluoroscopy MR – Magnetic Resonance NM – Nuclear Medicine PET – Positron Emission Tomography SPECT – Single Photon Emission Computer Tomography US – Ultra Sound Using tomography (3D slices) Mammography X-ray Magnet Isotopes Ultra Sound Type of radiation used
    6. Evolution of X-ray DR-Digital Radiography CR-Computerized Rad. XR (X-Ray) CT, MR, NM, PET, US, FL, Mammo, PACS Archive PACS Work station DIGITAL DIGITAL DR, CR FILM
    7. Evolution of X-ray DR-Digital Radiography CR-Computerized Rad. XR (X-Ray) CT, MR, NM, PET, US, FL, Mammo, PACS Archive PACS Work station DIGITAL DIGITAL DR, CR
    8. Medical Sensor Resolution and Grayscale Depth
    9. Medical Sensor Resolution and Grayscale Depth
    10. Displays - Sensors matching CT MR CR, DR Mammo NM US Which Display? Mono , or C o l o r ?
    11. DISPLAY Resolution / Grayscale Today
    12. DISPLAY Resolution / Grayscale Soon
    13. DISPLAY Resolution / Grayscale Future
    14. Outline
      • Trends in Medical Imaging
      • Types of Medical Displays
      • AMLCD Challenges for D.I.
      • Future hospitals and Displays
      • New DI and 3D Displays
      • Summary
    15. Types of Medical Displays
      • 1. Embedded Displays
      • (Instruments)
      • Example – EL 
      • EL = Electro-Luminescence
      • Rigid,
      • Wide temperature
      TFEL  ( C o l o r )
    16. Types of Medical Displays
      • 2. Referral Displays
      • (Informative)
      • Example – AMLCD 
      • AMLCD = Active Matrix Liquid Crystal Display
      • Information,
      • Instrument signals,
      • Referral images
    17. Typical Informative displays Medical Monitors Documentation Class Systems Diagnostic class Point of Care
      • 3. Diagnostic Displays (Imaging)
      • High resolution AMLCDs (Close to film) Calibrated gray levels (DICOM – see below) Meet Film Quality
      Imaging (Diagnostic) Displays
    18. DUAL Diagnostic Medical Displays Most radiologist prefer 2 x (3 MP) displays
    19. Outline
      • Trends in Medical Imaging
      • Types of Medical Displays
      • AMLCD Challenges for D.I. (Digital Imaging)
      • Future hospitals and Displays
      • New DI and 3D Displays
      • Summary
    20. Medical Imaging Displays should have:
      • Very high resolution (130 DPI, ~190 μm pixels)
      • High Brightness (~300 cd/m2; >500 mono)
      • At Least 10 bits (1024) separable gray levels
      • DICOM GSDF gray levels
      • Good Viewing angles (CR (+/- 85  H,V) >> 10:1; Little loss of gray levels; No inversion)
    21. Transition to AMLCDs
      • What makes the AMLCDs compete with CRTs as the displays for digital imaging?
      ?
    22. AMLCDs are the Dominant Technology Laptops Desktops LCD-TV Medical displays Manufacturing infrastructure Market trend
    23. Improved resolution Exponential Trend…! Medical Diagnostic
    24. Improved Viewing Angles IPS, FFS, MVA, PVA – Liquid Crystal (LC) technologies
    25. DICOM Standard
      • Standard for:
        • Communication
        • Archiving
        • Displays
      • DICOM –
        • D igital I maging and Co mmunication in M edicine
      http://medical.nema.org/
    26. Meeting The Gray Levels Criteria
      • Medical displays must support high # of gray levels
    27.  
    28. DICOM - Gray Scale Display Function http://medical.nema.org/dicom/2003.html DICOM GSDF
    29. DICOM Gray Levels Calibration
    30. Reasons for DICOM Calibration
      • Have same image over time
      • Same image in different locations ( e.g. Beijing and Shanghai )
      • Differentiate image details
      2001 2006
    31. Planar’s Method to Achieve More Gray Levels Display Driver Chips – 8 bits Sub-pixels Dithering – 1.5 bits Temporal Dithering – 2 bits Total = 11.5 bits Planar: 11.5bits /3061 gray levels Sub-pixels
    32. Meeting DICOM Standard Gray levels A ccuracy Brightness Control LUT – Look up tables (> 10 bits) - stable Backlight Sensor (center) Better Front Sensor (corner) Need adjustment
    33. Driving The Displays Sensor 12 bits
      • CPU
      • Image Buffer
      • Compression
      • Image Proc.
      8 bits
      • Graphic Card
      • Memory
      • Video Conversion
      DVI
      • Display
      • De-Compression
      • Calibration - (LUT)
      11.5 bits
      • AMLCD glass
      • Row / Column drivers
    34. Grey Level Brightness vs Horizontal Viewing Angle IPS
    35. Normalized Gray Level Each curve at different viewing angle; NO INVERSION
    36. Meeting Medical Standards (*) - Mandatory AAPM-TG18 DIN-6868 -57 EUREF JIS-Z4752-2 USA, Americas, R.O.W. Germany (*) , Switzerland, Austria Europe (EC) Japan
    37. Planar’s architecture is already 12 bits
      • We use our own display controller
      • It is tightly coupled with our display
      • The limitation is the operating system (Windows) – Changing to new soon ( 2007 )
      • PACS viewer software is also 8 bits
    38.  
    39.  
    40. Medical Displays - Summary
      • Unique displays
      • Diagnostic workstations need bright, high resolution and high gray levels
      • Trend: Color Diagnostic displays
      • Soon launching 2, 3, 4 MP color DICOM calibrated , 1768 shades of gray
    41. Outline
      • Trends in Medical Imaging
      • Types of Medical Displays
      • AMLCD Challenges for D.I.
      • Future hospitals and Displays
      • New DI and 3D Displays
      • Summary
    42. Future UCLA medical center (2005)
    43. Imaging Work Station – Center Location
      • High Resolution Displays (x2)
      • Low Ambient illumination (no glare)
      • Color monitor
    44. Departments User Information Access
    45. Infotainment = Information + Entertainment Patient medical Info TV, Web, Emails Secure Paid
    46. Hospital Staff Want Mobility and Connectivity Wireless (Secure) This is evolving technology Patient Information Pharmacy Physician Ref. book Schedules & Emails Images
    47. Future Operating Room (OR) Presented by Dr. Falk at the UCLA-2004 conference
    48. Displays Trend Map Embedded Displays (EL, LCD) Referral (1~2 MP) Desktops, Carts, Vital Screen, Digital Imaging (3, 5, 16 MP), Carts, Mammography, OR- Multi-function Video, ~20”, split screen, touch, washable, OR- Wall Displays >30”, Plasma, AMLCDs Observation Suite >30”, Video Infotainment ~19”, Video, referral, web 3D-stereo High resolution,
    49. Outline
      • Trends in Medical Imaging
      • Types of Medical Displays
      • AMLCD Challenges for D.I.
      • Future hospitals and Displays
      • New DI and 3D Displays
      • Summary
    50. Typical Displays for DI – Digital Imaging
      • Typical Medical displays for Digital Imaging: 2, 3, 5 MP – monochrome & Color
      • Dimensions: 20 ~ 21 inch diameter
      • Mostly used: pair of 3 MP (mono)
      • Last two years: 4 MP color / 30” – for two side by side images (2x 2MP)
      2 MP 3 MP 5 MP 4 MP / 30”
    51. New products (at RSNA-2007)
      • Planar-Dome: 16 MP mono / 30” (200 dpi)–
        • For: mammography, radiology, multi-modalities
        • production coming soon
      • Barco: 6.7 MP color / 30” (127 dpi)–
        • For: Radiology (2x 3MP images), multi-modalities
        • made by Hitachi (s-IPS)
      • Planar-Dome: Stereo-3D SD2320:
        • For: CT, MR, other volume imaging (3Mensio software)
        • For: surgery planning, and education
      • Planar-Dome: Stereo-3D prototype:
        • Mammography study at Emory Hospital
    52. 3D Stereo –Planar products
      • Improves detection of 3D images
      • Clinical trials of mammography
    53. Stereo-Mirror (3D) - Concept
    54. RSNA Show – Stereo Displays (3D) CT images Processed w. 3Mensio Software Planar - - SD2320 3D display Mammo Study at Emory U. Planar - - prototype 5MP-stereo
    55. Stereo-5 MP – Mammography study
      • Study in progress
      • For 1093 patients – improve false-positive by 49%
      Study at Emory Univ. Breast Clinic, Atlanta, GA 5 MPixel Stereo prototype
    56. Summary
      • HealthCare system is evolving
      • Modalities are using high end displays
      • AMLCDs are becoming the dominant display technology
      • AMLCDs have still some challenges
      • New displays are coming:
        • PDAs, or Tablet-PC (wireless),
        • video displays (multifunction),
        • large screens,
        • high resolution with internet access,
        • 3D (rendering) and stereo-3D
      • THANK YOU
      [email_address] Web: www.planar.com

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