| US 7,463,920 B2 | ||
| Rapid MR visualization of interventional devices | ||
| David Embrey Purdy, Pearland, Tex. (US) | ||
| Assigned to Siemens Medical Solutions USA, Inc., Malvern, Pa. (US) | ||
| Filed on Mar. 25, 2005, as Appl. No. 11/89,804. | ||
| Prior Publication US 2006/0241378 A1, Oct. 26, 2006 | ||
| Int. Cl. A61B 5/00 (2006.01); G01V 3/00 (2006.01) | ||
| U.S. Cl. 600—424 [324/307] | 16 Claims |
| 1. A method for identifying and enhancing visualization of an interventional device using a magnetic resonance (MR) imaging
system, comprising the following steps:
employing a pulse sequence in MR imaging a body portion of a patient and deriving response MR signals for use in providing
MR images of said body portion;
processing the MR signals to provide MR images of said body portion, in response to first parameters of the applied pulse
sequence predetermined for acquisition of a first gradient echo image, using a first amplitude readout gradient and first
receiver bandwidth, said first gradient echo image including a first intensity distortion artifact in the area of an interventional
device and
second parameters of the applied pulse sequence predetermined for acquisition of a second gradient echo image, using a second
amplitude readout gradient and second receiver bandwidth, said second gradient echo image including a second intensity distortion
artifact in the area of an interventional device, said first parameters providing a relatively low amplitude readout gradient
and relatively low receiver bandwidth and increased spatial image intensity distortion artifact compared to said second parameters
and are selected to facilitate locating said interventional device relative to an image slab; and
selecting either said first or second parameters in response to user command.
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