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?


Ct angiography prepared by dr khalid al joghaiman
MPR

PLANE?






Ct angiography prepared by dr khalid al joghaiman

SIMPLE

FAST

ANY PLANE VISUALIZATION

LESS USEFUL IN COMPLEX VESSEL VISUALIZATION

MPR


Ct angiography prepared by dr khalid al joghaiman

CALCIFICATION DETECTION

THROMBUS DETECTION

AILIASING ARTIFACT

EDITING REQUIRED

MIP