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CR & DR.pptx

  1. 1. DR & CR IMAGING BY- Dr. Nikhil Arora MD Radiodiagnosis
  2. 2. INTRODUCTION Dr. Nikhil Arora MD Radiodiagnosis
  3. 3. COMPUTED RADIOGRAPHY It uses a photostimulable phosphor as the image receptor. A phosphor that is currently used is composed of europium activated barium florohalide. When exposure is made, phosphor absorbs some of the energy in X-ray beam and stores a portion of this energy as valence electrons stored in high energy traps to create a latent image. Dr. Nikhil Arora MD Radiodiagnosis
  4. 4. X-Ray Luminescene Dr. Nikhil Arora MD Radiodiagnosis
  5. 5. CR IMAGE PLATE Dr. Nikhil Arora MD Radiodiagnosis
  6. 6. Dr. Nikhil Arora MD Radiodiagnosis
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  10. 10. Dr. Nikhil Arora MD Radiodiagnosis
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  15. 15. INDIRECT DIGITAL RADIOGRAPHY Dr. Nikhil Arora MD Radiodiagnosis
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  18. 18. Dr. Nikhil Arora MD Radiodiagnosis
  19. 19. DIRECT DIGITAL RADIOGRAPHY Dr. Nikhil Arora MD Radiodiagnosis
  20. 20. This directly converts x-ray photon energy into free electrical charge carriers. The most commonly used photoconductor is amorphous selenium or a-Se Photoconductor Dr. Nikhil Arora MD Radiodiagnosis
  21. 21. Thank you Dr. Nikhil Arora MD Radiodiagnosis

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