The purpose of this paper was to investigate the feasibility of MR-guided i
nsertion of a temporary vena cava Biter on an open low-field imager, In viv
o procedures were performed on four anesthetized pigs using a common nonfer
romagnetic temporary vena cava filter and a special prototype guidewire dev
eloped for vascular interventions guided by low-field MRI, Breath-hold spoi
led gradient-echo sequences (fast low-angle shot [FLASH]) with now compensa
tion were used for position monitoring of the passively visualized intravas
cular devices. Using the described technique and equipment, all steps of th
e procedure were feasible in the MR unit. Practicability of the procedure s
eems to be sufficient for clinical purposes but was inferior compared to th
e conventional technique of filter placement.