Aarthi scan's

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Aarthi scan's

  1. 1. Applications of 64 slice CT<br />Dr.S Sivasubramanian MD,DNB,FRCR(UK).,<br />
  2. 2. Diagnostic Imaging is revolutionized by the arrival of computers and software.<br />Newer technology is still developing due the advancements in software in medical imaging.<br />
  3. 3.
  4. 4. Applications of 64 slice CT<br />Has created an Imaging Renaissance<br />
  5. 5.
  6. 6. What is Multislice CT?<br />Also known as – MDCT…<br />
  7. 7. ADVANTAGES<br />Reduced scan time( single breathhold imaging possible).<br />Excellent resolution <br />Isotropic resolution in any direction<br />
  8. 8. <ul><li>Cardiac Imaging
  9. 9. Peripheral Vascular
  10. 10. CNS Applications
  11. 11. Body Imaging with Isotropic resolution
  12. 12. Musculoskeletal
  13. 13. Miscellaneous</li></li></ul><li>Cardiac Imaging<br />
  14. 14. Calcium Scoring<br />Function<br />Cardiovascular<br />Coronary CTA<br />4D Examination<br />
  15. 15. What does Cardiac CT do ?<br /><ul><li> Calcium scoring
  16. 16. Viewing the four major vessels
  17. 17. Vessel analysis
  18. 18. Stenosis Quantification
  19. 19. Plaque differentiation
  20. 20. Stent imaging
  21. 21. Function Assessment </li></li></ul><li>Who Should get Cardiac CT Done ?<br />Patient is Asymptomatic : <br /><ul><li>Family history of coronary artery disease
  22. 22. Persistent high triglyceride levels and other high risk factors such as smoking, diabetes, etc.
  23. 23. ECG abnormalities on a routine health check-up
  24. 24. Equivocal (plus/minus) abnormalities on a routine </li></ul> stress test, <br /><ul><li> insurance or as part of a routine health check-up
  25. 25. Moderate to severe hypertension
  26. 26. Prior to non-coronary surgery in the adult population, etc
  27. 27. Pre-ASD repair Pre-valvular repair Pre-tumor surgery </li></li></ul><li>Who Should get Cardiac CT Done ?<br />The Patient is Symptomatic :<br /><ul><li>Atypical chest pain (right side, shoulder tip, etc.)
  28. 28. ?Coronary ?Aorta ? Pulmonary.
  29. 29. Anomalous coronary arteries, ectasia or aneurysms </li></li></ul><li> Other Indications:<br />Post-bypass <br />Post-stent <br />For stents larger than 3mm in size, cardiac CT is an excellent tool for assessing in-stent lumen. For stents smaller than 2.5mm, the results are still equivocal. <br />Tumors <br />Cardiac CT is a good tool for assessing cardiac neoplasms <br />
  30. 30.
  31. 31.
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  33. 33.
  34. 34.
  35. 35.
  36. 36. Post-processing<br />
  37. 37. Sharp delineation ofentire coronary artery tree with isotropic resolution and 0.33 s rotation time<br />MIP<br />VRT<br />
  38. 38. Sharp delineation of entire coronary artery tree with 0.33 mm isotropic resolution and 0.33 s rotation time<br />
  39. 39.
  40. 40.
  41. 41.
  42. 42.
  43. 43.
  44. 44.
  45. 45.
  46. 46.
  47. 47.
  48. 48. Advantages of 64-slice CT angiography as compared to invasive angiography<br />Better depiction of coronary anomalies<br /><ul><li>Non-invasive
  49. 49. More cost-effective
  50. 50. Clear visualization of calcium deposits and plaque morphology
  51. 51. Better delineation of stenoses at the origin of the right and left coronary artery
  52. 52. True 3D imaging
  53. 53. “One-stop shop” analysis—coronary arteries, valves, ventricular analysis, myocardial mass, plaque morphology, lung parenchyma</li></ul>Radiological Society of NA News - August 2005<br />
  54. 54. Disadvantages of MDCT ( very few).<br />No direct assessment of flow through the vessels<br />Massive calcifications and stents cause beam hardening artifacts, causing false-positives<br />Need for β-blocking medication when heart rates are elevated<br />No interventions are possible during the examination<br />Radiological Society of NA News - August 2005<br />
  55. 55. Vascular<br />
  56. 56. Pulmonary <br />
  57. 57.
  58. 58. Abdominal<br />
  59. 59.
  60. 60.
  61. 61.
  62. 62.
  63. 63.
  64. 64.
  65. 65.
  66. 66.
  67. 67.
  68. 68.
  69. 69. Aorta<br />
  70. 70.
  71. 71.
  72. 72.
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  74. 74.
  75. 75.
  76. 76.
  77. 77.
  78. 78.
  79. 79.
  80. 80.
  81. 81.
  82. 82.
  83. 83. PERIPHERAL<br />
  84. 84.
  85. 85. CNS Applications<br />
  86. 86. CTA<br />Subtraction of data <br />CT DSA <br />Non Enhanced CT<br />
  87. 87.
  88. 88.
  89. 89.
  90. 90.
  91. 91. Perfusion CT<br />For Early Stroke <br />Imaging <br />
  92. 92. Musculoskeletal :<br />
  93. 93.
  94. 94.
  95. 95.
  96. 96. Very good depiction of Bone Implants and prosthesis<br />
  97. 97. Isotropic resolution,Virtual scopy<br />
  98. 98.
  99. 99.
  100. 100.
  101. 101. Virtual Endoscopy :<br />
  102. 102.
  103. 103. Miscellaneous<br />
  104. 104. CT Urogram<br />
  105. 105. CT- Bone Mineral Densitometry<br />
  106. 106.
  107. 107. Dental CT<br />
  108. 108.
  109. 109.
  110. 110. Advanced Imaging <br />Better and faster Diagnosis.<br />Better and Early Treatment<br />Better Health<br />
  111. 111. Thank you<br />

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