ct angiography prepared by dr khalid al joghaiman
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CT ANGIOGRAPHY prepared by Dr khalid al joghaiman. PATIENT PREP. BUN 7-20 mg/dl CREAT.- 0.6 –1.2 mg/dl IODINE ALLERGY- STEROID THERAPY HYPERVENTILATION BEFORE EXAM FOR BETTER BREATHOLD. CONTRAST ADMINISTRATION. ORAL CONTRAST????. WATER NEGATIVE CONTRAST.

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Presentation Transcript
patient prep
PATIENT PREP.
  • BUN 7-20 mg/dl
  • CREAT.- 0.6 –1.2 mg/dl
  • IODINE ALLERGY- STEROID THERAPY
  • HYPERVENTILATION BEFORE EXAM FOR BETTER BREATHOLD
oral contrast
ORAL CONTRAST????

WATER

NEGATIVE CONTRAST

contrast administration and scanning methods
CONTRAST ADMINISTRATION AND SCANNING METHODS
  • BOLUS TRACKING
  • BOLUS TIMING
  • MANUAL PRESET TIME
manual delays
CERBRAL CTA

CAROTID CTA

CHEST CTA (PE)

15 SEC

12 SEC

10-20 SEC

MANUAL DELAYS
two techniques to reduce motion artifacts in cardiac ct
TWO TECHNIQUES TO REDUCE MOTION ARTIFACTS IN CARDIAC CT
  • PROSPECTIVE TRIGGERING
  • RETROSPECTIVE GATING
cardiac angiogram

CARDIAC ANGIOGRAM

PERFORMED WITH CONTRAST INJECTION

4-5 cc/sec

150 cc total volume

calcium scoring

CALCIUM SCORING

NO IV CONTRAST USED

cta mpr
CTA - MPR

PLANE?

slide31
MPR

PLANE?

slide36
SIMPLE

FAST

ANY PLANE VISUALIZATION

LESS USEFUL IN COMPLEX VESSEL VISUALIZATION

MPR
slide37
CALCIFICATION DETECTION

THROMBUS DETECTION

AILIASING ARTIFACT

EDITING REQUIRED

MIP
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