1 / 76

CT ANGIOGRAPHY

CT ANGIOGRAPHY. CT IMAGE OF THE BLOOD VESSEL OPACIFIED BY CONTRAST. REQUIREMENTS FOR CTA. PATIENT PREPARATION ACQUSITION PARAMETERS CONTRAST MEDIUM ADMINISTRATION POSTPROCESSING TECHNIQUES. PATIENT PREP. INFORMED CONSENT. PATIENT PREP. BUN 7-20 mg/dl CREAT.- 0.6 –1.2 mg/dl

moral
Download Presentation

CT ANGIOGRAPHY

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CT ANGIOGRAPHY

  2. CT IMAGE OF THE BLOOD VESSEL OPACIFIED BY CONTRAST

  3. REQUIREMENTS FOR CTA • PATIENT PREPARATION • ACQUSITION PARAMETERS • CONTRAST MEDIUM ADMINISTRATION • POSTPROCESSING TECHNIQUES

  4. PATIENT PREP.

  5. INFORMED CONSENT

  6. PATIENT PREP. • BUN 7-20 mg/dl • CREAT.- 0.6 –1.2 mg/dl • IODINE ALLERGY- STEROID THERAPY • HYPERVENTILATION BEFORE EXAM FOR BETTER BREATHOLD

  7. UTILIZED

  8. GAUGE SUITABLE FOR CTA 18 OR 20

  9. CONTRAST ADMINISTERED WITH POWER INJECTOR

  10. ACQUSITION PARAMETERS

  11. PARAMETERS • USUALLY ROUTINE CT PRECEDES A CTA EXAM. THE ROUTINE EXAM IS USED AS A REFERENCE SCAN HELPING TO DETERMING THE SCANNING RANGE IN CTA.

  12. SLICE THICKNESS SPATIAL RESOLUTION SLICE THICKNESS

  13. CEREBRAL CTA ABDOMINAL CTA THORACIC CTA 1MM (LOWER mA) 3MM 3MM SLICE THICKNESS

  14. PITCH SPATIAL RESOLUTION SPIRAL PITCH

  15. SPIRAL PITCH • UP TO 2

  16. kVp, mA, TIME • SIMILAR TO NON- CTA EXAM OF THE SAME BODY PART

  17. RECONSTRUCTION INTERVAL • 50% OF OVERLAP

  18. UTILIZE SUBSECOND SCANNING • INCREASED TISSUE VOLUME COVERAGE • REDUCTION IN MOTION ARTIFACT

  19. CONTRAST ADMINISTRATION

  20. POWER INJECTOR

  21. POWER INJECTOR PARAMETERS VOLUME OF CONTRAST-ml RATE ml/sec TIME OF INJECTION – sec SCAN DELAY TIME - sec

  22. CONTRAST WARMER WHY???

  23. RATE OF INJECTION 3-5 ml/sec

  24. ORAL CONTRAST???? WATER NEGATIVE CONTRAST

  25. AUTOMATED CONTRAST ADMINISTRATION SYSTEMS • SMARTPREP • CARE • SURESTART

  26. CONTRAST ADMINISTRATION AND SCANNING METHODS • BOLUS TRACKING • BOLUS TIMING • MANUAL PRESET TIME

  27. CARE BOLUS

  28. SMART PREP

  29. SURE START

  30. Bolus tracking- PE

  31. PE?

  32. Tracking slice

  33. Bolus tracking- Carotids and Circle of Willis

  34. Circle of Willis

  35. Circle of Willis?! 40 SEC

  36. Renal arteries 25-30 sec.

  37. ABDOMINAL AND FEMORAL RUNOFF

More Related