[Active MR tracking system at 0.2T MR, a preliminary report: real time position tracking on interventional MR].
An active MR tracking system was installed in a 0.2 T open-type MRI. Interventional devices with a receive-only microcoil at their tips were newly developed for tracking at 0.2T. The low signal-to-noise ratio at 0.2T required the microcoils to have a diameter of about 2 mm and 20 turns for stable tracking. Simulation of MR-guided biopsy using biplane images with tracking in the gelatin phantom was performed. MR tracking in the aorta and IVC of a dog by a catheter with a microcoil at its tip was successful.
Aoki
S
S
Department of Radiology, Yamanashi Medical University.
Nanbu
A
A
Araki
T
T
Shimazu
N
N
Ichikawa
T
T
Kumagai
H
H
Kachi
K
K
Araki
T
T
D000818:Animals; D004285:Dogs; D005069:Evaluation Studies as Topic; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods* / Q000592:standards; D008961:Models, Structural