Aortic arch CT angiogram  
 

This is a CTA (computed tomography angiography) image of the aortic arch. A CTA image is obtained by injecting intravenous dye, followed by high-resolution CT scanning when the dye is in the arterial circulation. The images are obtained as axial slices that can be reformatted with specialized software programs in the sagittal plane, coronal plane or in three-dimensions. This image is a three-dimensional reformat of the original source images.

 
 

Identify the following:

1. aortic arch

2. brachiocephalic (innominate) artery

3. right subclavian artery

4. right common carotid artery

5. left common carotid artery

6. left subclavian artery

7. carotid bifurcation

8. internal carotid artery

9. external carotid artery

 
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