Real-time trajectory guide tracking for intraoperative MRI-guided neurosurgery.

ABSTRACT:

Purpose

In current intraoperative MRI (IMRI) methods, an iterative approach is used to aim trajectory guides at intracerebral targets: image MR-visible features, determine current aim by fitting model to image, manipulate device, repeat. Infrequent updates are produced by such methods, compared to rapid optically tracked stereotaxy used in the operating room. Our goal was to develop a real-time interactive IMRI method for aiming.

Methods

The current trajectory was computed from two points along the guide's central axis, rather than by imaging the entire device. These points were determined by correlating one-dimensional spokes from a radial sequence with the known cross-sectional projection of the guide. The real-time platform RTHawk was utilized to control MR sequences and

SUBMITTER: Olsen ME 

PROVIDER: S-EPMC9930741 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature