MR Angiography & Venography carotid and brain contrast(care bolus)Siemens 3T(HMS MIRDIF HOSPITAL)UAE

MR angiography carotid and brain & venography brain .
We take pre contrast carotid and brain
And take pre contrast of brain
And start care bolus with injection
We start imaging when contrast reach the aortic arch we take the same sequence we take in pre for angiography and after this take venous on brain
And make subtraction ( pre and post contrast) after subtraction we will get two sequences first sequence for angiography carotid and brain and second sequence for venography brain

[@aymanmuhammad1610]

Contrast volume؟