6 - Abdomen CT - Lectures

 

Introduction to abdomen CT

 

Routine abdomen CT scan needs  

oral & iv contrast.

 

1- fasting 6-8 h 2- oral contrast. 3-iv contrast. 4- scanning

 

fasting 1- oral contrast.(most important ). 2- aspiration if intubation in need 3- frequent vomiting..

 

**Oral contrast: 1- gastrographin. aspiration pulmonary edema 2- NICM No contra indication

 

 

**Iv contrast: NICM -K.F.T. - Allergy drugs, food Hydrocortisone. -

 

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i.Vupper arm. svc Rt side of heart  lung left side of heart body arteries

 liver   portal system systemic venous excretion of contrast via kidneys.

 

 

Three phases: 1-Arterial phase. 25 sec 2-Porto-venous phase. 40-60 sec 3-Delayed.>2-5 min

  Routinly porto venous.  Angio CT arterial

 

protocols Routine  abdomen & pelvis oral & iv contrast porto venous.

     

Stone protocol abdomen pelvis without oral or iv contrast. Liver protocol without + triple phases ( arterial , PV & delayed)

 

 Adrenal protocol pancreatic protocol



without+ arterial , portovenous & st we need delayed in adrenal protocol.

 

Important notes:   + abdomen & pelvis pelvis CT routinley needs oral & iv contrast & scanning at PV phase. +clinical data is important to determine the protocol.

  +Some times You can modify the protocol according to the patient s condition & pathology. ’