Study the following MR angiographic images and attempt the following questions

MR angiogram with...
Axial MRA
MR angiogram with gadolinium demonstrates an aberrant right subclavian artery (arrowed). Note normal loss of signal (flow void) due to blood changing direction within the descending aorta. Also note the associated aneurysmal dilatation of this vessel.
System: Vascular
Modality: MRI (MRA)

- “ Instead of being the first branch, the right subclavian artery arises on its own as the fourth branch, after the left subclavian artery. It then h...”

View full size version of Aberrant right subclavian artery with background large vessel vasculitis (Takayasu arteritis)

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