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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Ct angiography prepared by dr khalid al joghaiman
CT ANGIOGRAPHYprepared by Dr khalid al joghaiman


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



Scanning during rr interval
SCANNING DURING RR INTERVAL


Cardiac angiogram

CARDIAC ANGIOGRAM

PERFORMED WITH CONTRAST INJECTION

4-5 cc/sec

150 cc total volume


Calcium scoring

CALCIUM SCORING

NO IV CONTRAST USED



3 d visualization tools in cta
3-D VISUALIZATION TOOLS IN CTA

  • MPR

  • MIP

  • SSD

  • VR

  • CINE


Cta mpr
CTA - MPR

PLANE?


MPR

PLANE?






SIMPLE

FAST

ANY PLANE VISUALIZATION

LESS USEFUL IN COMPLEX VESSEL VISUALIZATION

MPR


CALCIFICATION DETECTION

THROMBUS DETECTION

AILIASING ARTIFACT

EDITING REQUIRED

MIP



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