Value of MR contrast media in image-guided body interventions

Figure 1 Selected magnetic resonance-guided images of the abdominal aorta prior to the administration of intravascular gadolinium-based (T1 enhancing agent) magnetic resonance contrast medium, the inflated balloon on the catheter is evident (arrow), but suffers substantial downstream signal loss (A). After a blood pool magnetic resonance (MR) contrast medium administration (B), the MR dysprosium-chelate (markers placed on the catheter shaft) becomes evident (arrows, B) and, following inflation, the spatial extent of the balloon is better delineated (arrow, C).