Trends In Medical Displays - Planar Systems - Adi Abileah

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Trends In Medical Displays
Presented by Adi Abileah
Chief Scientist, Planar Systems

FPD China
March 10-12, 2008

Published in: Technology, Health & Medicine
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Trends In Medical Displays - Planar Systems - Adi Abileah

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

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