Real-time direct volume rendering in functional magnetic resonance imaging

Hesser, J., Manner, R., Braus, D. F., Ende, G., Henn, F. A. (June 1997) Real-time direct volume rendering in functional magnetic resonance imaging. Magnetic Resonance Materials in Physics, Biology and Medicine, 5 (2). pp. 87-91. ISSN 0968-5243 (Print)0968-5243 (Linking)

DOI: 10.1007/BF02592237


Direct volume rendering is a visualization method that allows display of all information hidden in three-dimensional data sets of, for example, computed tomography or magnetic resonance imaging (MRI). In contrast to commonly used surface rendering methods, these algorithms need no preprocessing but suffer from a high computational complexity. A real-time rendering system, VIRIM (Vitec: Visualization Technology GmbH, Mannheim, Germany), cuts down rendering times of minutes on normal workstations to an interactive rate of 1 second or less. The immediate visual feedback allows interactive steering of the visualization process to achieve insight into the internal three-dimensional structure of objects. Additional information is obtained by using an interactive gray-value segmentation tool that both allows segmentation of the data set according to bone, tissue, and liquor and display of multifunctional data sets (e.g., functional MRI [fMRI] data sets). Thus, real-time direct volume rendering allows segmentation and volume data processing of functional and anatomical MR data sets simultaneously. As this method can be integrated in the clinical routine, it is of great importance for real-time motion artifact detection and the interpretation of fMRI data acquired during cognitive experiments with normal subjects and psychiatric patients. Because of the free programmability of VIRIM, more complex matching procedures are currently being investigated for future implementation.

Item Type: Paper
Uncontrolled Keywords: Brain/anatomy & histology/physiology Computer Systems Heart/anatomy & histology Humans Image Processing, Computer-Assisted/methods Magnetic Resonance Imaging/ methods Neurosciences/ methods
Subjects: organs, tissues, organelles, cell types and functions > organs types and functions > brain
Investigative techniques and equipment > magnetic resonance imaging
CSHL Authors:
Communities: CSHL labs > Henn lab
Depositing User: Kathleen Darby
Date: June 1997
Date Deposited: 07 May 2014 18:28
Last Modified: 07 May 2014 18:28
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