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- Serial Intraoperative MR Imaging of Brain Shift
- The major shortcoming of image-guided navigational systems is the use of pre-surgically acquired image data, which does not account for intraoperative changes in brain morphology. The occurrence of these surgically induced volumetric deformations, or "brain shift", has been well established. Maximum measurements for surface and midline shifts were reported. There...
- White papers 2001-04-17
Additional Resources
- Design and Implementation of Surgical Instruments, Devices, and Receiver Coils for Intraoperative MRI-Guided Neurosurgical and Neuro Ablative Procedures
- Magnetic resonance imaging MRI is the optimal imaging modality for neurosurgical applications due to its ability to elucidate central nervous system anatomy and pathology. Stereotactic systems employing MRI have enhanced the surgeon's ability to safely and efficaciously operate. A next step in the evolution of neurosurgery is to update the...
- White papers 2001-02-28
- Motion Robust Imaging for Continuous Intraoperative MRI
- The sensitivity of MR imaging to motion and susceptibility normally requires that the physician using intraoperative MRI cease surgical activity while image data sets are acquired. We demonstrate that line scan imaging allows the physician to continue operating without the delays caused by imaging. Consequently, patient anesthesia, surgery, and operating...
- White papers 2000-12-08
- Robust Nonrigid Registration to Capture Brain Shift From Intraoperative MRI
- The intraoperative magnetic resonance imaging system allows the neurosurgeon to acquire images of the brain during the neurosurgical procedure. In the case of brain tumor resection, this system helps to follow the deformation of the brain. However, even if it provides significantly more information than any other intraoperative imaging system,...
- White papers 2004-08-02
- Neurosurgical Procedures in a 0.5 Tesla, Open-Configuration Intraoperative MRI: Planning, Visualization, and Navigation
- Computer-assisted 3-dimensional planning, navigation and the possibilities of intraoperative imaging updates have made a large impact on neurological surgery. 3-dimensional rendering of complex medical imaging data, as well as co-registration of multimodal structural images and functional data has reached a highly sophisticated level. When introduced into surgical navigation however, this...
- White papers 2001-02-28
- Interventional and Intraoperative MRI (iMRI): MAGNETOM Family
- Interventional MRI is a natural evolution from the exceptional diagnostic capabilities of MR scanners. MAGNETOM Systems are designed to intelligently support, simplify and automate clinical workflow and increase productivity. The success of MAGNETOM Concerto and Maestro Class systems proves it. Siemens maintains extensive collaborations with leading clinical and industrial partners...
- White papers 2003-06-01
- Interventional and Intraoperative Magnetic Resonance Imaging
- The goal of the Image Guided Therapy Program, as the name implies, is to develop the use of imaging to guide minimally invasive therapy. The program combines interventional and intraoperative magnetic resonance imaging MRI with high-performance computing and novel therapeutic devices. In clinical practice the multidisciplinary program provides for the...
- White papers 2000-08-01
- Intraoperative Diffusion Imaging on a 0.5 Tesla Interventional Scanner
- Intraoperative line scan diffusion imaging LSDI on a 0.5 Tesla interventional MRI was performed during neurosurgery in three patients. Diffusion trace images were obtained in acute ischemic cases. Scan time per slice was 46 seconds and 94 seconds, respectively, for diffusion tensor images. Diagnosis of acutely developed vascular occlusion was...
- White papers 2000-12-08
- Incorporation of Diffusion Tensor MRI in Non-Rigid Registration for Image-Guided Neurosurgery
- The development of image-guided neurosurgery methods over the past decade has permitted major advances in minimally invasive therapy. A variety of imaging techniques provide vital information about the internal structure of the brain to the neurosurgeon, such as the locations of blood vessels, white matter tracts and regions of cortical...
- White papers 2003-06-01
- Real-Time Registration of Volumetric Brain MRI by Biomechanical Simulation of Deformation During Image Guided Neurosurgery
- The key challenge faced by a neurosurgeon is the removal from the brain of as much tumor tissue as possible while minimizing the removal of healthy tissue and avoiding the disruption of critical anatomical structures. They developed an algorithm to create enhanced visualizations of tumor and critical brain structures by...
- White papers 2001-12-14
- An Anisotropic Material Model for Image Guided Neurosurgery
- In order to combine preoperative data with intraoperative scans for image-guided neurosurgery visualization, accurate registration is necessary. It has been determined previously that a suitable way to model the non-rigid deformations due to brain shift is via a biomechanical model that treats the brain as a homogeneous, isotropic, linear elastic...
- White papers 2004-08-30
- Distributed Modular Computer-Integrated Surgical Robotic Systems: Architecture for Intelligent Object Distribution
- This paper presents intelligent object distribution architecture to maximize the performance and intelligence of a distributed surgical robotics system and its preliminary implementation in an MR-guided surgical robot system in an open-configuration MRI scanner. The method enables networked integration of a robot control server and multiple clients with minimum engineering...
- White papers 2001-01-31
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