Journal ArticleDOI
A computerized tomography-computer graphics approach to stereotaxic localization
TLDR
The use of three-dimensional computer graphics to display structures visible in computerized tomography (CT) scans and to accurately determine optimum stereotaxic probe placement relative to those structures are described.Abstract:
✓ This paper describes the use of three-dimensional computer graphics to display structures visible in computerized tomography (CT) scans and to accurately determine optimum stereotaxic probe placement relative to those structures. A prototype Lucite stereotaxic frame designed for use in CT body scanners was fitted with a phantom consisting of small Lucite spheres representing intracranial tumors with diameters of 6 to 19 mm. A series of CT scans was obtained of the frame and phantom together. Edge outlines of the spheres were extracted from each scan in the series. A three-dimensional visual representation of the spheres was obtained by displaying their outlines from all CT scans. A superimposed visual simulation of the stereotaxic frame was adjusted interactively using several analog dials in order to simulate trajectory choice and probe depth before actual surgery. The frame settings and probe depth calculated by the graphical computer were then applied to the actual prototype frame in order to assess ...read more
Citations
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Journal ArticleDOI
Medical image matching-a review with classification
TL;DR: A classification scheme for multimodal image matching is considered and may be used for any modality; not only for projection images and tomographic images, but also for other signal modalities that provide spatial insight into function or anatomy.
Patent
System for indicating the position of a surgical probe within a head on an image of the head
TL;DR: In this article, a system for determining a position of a probe relative to an object such as a head of a body of a patient is presented. But the system is limited to the case where the head does not appear in the scan images, and the position of the forehead contour is determined with an optical scanner and a ring.
Journal ArticleDOI
Development and implementation of intraoperative magnetic resonance imaging and its neurosurgical applications.
Peter McL. Black,Thomas M. Moriarty,Eben Alexander,Philip E. Stieg,Eric J. Woodard,P. Langham Gleason,Claudia Martin,Ron Kikinis,Richard B. Schwartz,Ferenc A. Jolesz +9 more
TL;DR: A new open configuration magnetic resonance imaging (MRI) system, with which neurosurgical procedures can be performed using image guidance, is described, which allows lesions to be precisely localized and targeted, and the progress of a procedure can be immediately evaluated.
Patent
Apparatus and method for photogrammetric surgical localization
TL;DR: In this article, a method and apparatus for defining the location of a medical instrument relative to features in a medical workspace including a patient's body region is described. But, the method is not suitable for indoor environments.
Patent
Surgical navigation systems including reference and localization frames
Richard D. Bucholz,Kevin T. Foley,Kurt R. Smith,Daniel Bass,Thomas Wiedenmaier,Todd Pope,Udo Wiedenmaier +6 more
TL;DR: In this paper, the authors present a system for use during a medical or surgical procedure on a body, which includes an apparatus for identifying, during the procedure, the relative position of each of the reference points of each body element.
References
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Stereotaxic computed tomography
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TL;DR: A head fixation system has been devised enabling the exact transfer of information from the diagnostic coordinate system of the scanner to other therapeutic or diagnostic coordinate systems.
Journal ArticleDOI
Thermometry considerations in localized hyperthermia
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TL;DR: This paper describes a method for gathering multiple overlapped 8 mm transverse sections, subjecting these data to a deconvolution process, and then displaying thin (1 mm) transverse as well as reconstructed coronal and sagittal CT images, illustrating this method's faithful reconstruction of coronaland sagittal tissue densities when correlated with actual specimen photographs of a sectioned brain.
Journal ArticleDOI
Potential artifacts associated with the scanning pattern of the EMI scanner.
TL;DR: It is shown that simultaneous monitoring of a single focal spot by two adjacent detectors, as in the EMI system, would lead to significant overlap between the two adjacent EMI slices resulting in dual imaging.
Journal ArticleDOI
Further investigation and initial clinical use of advanced CT display capability.
TL;DR: Additional experience with cadaver models and the results of initial applications of the technique for providing thin transverse CT sections and for redisplaying this transverseCT data as coronal or sagittal anatomic planes are presented.