In the use of MRI in acute stroke patients, determination of the perfusion-diffusion (PWI-DWI) mismatch is highly important, since it indicates possible enlargement of the ischemic lesion or deterioration of the patie...
ISBN:
(纸本)3540426973
In the use of MRI in acute stroke patients, determination of the perfusion-diffusion (PWI-DWI) mismatch is highly important, since it indicates possible enlargement of the ischemic lesion or deterioration of the patient. When quantitative measures are used such as the ADC of CBF to predict ischemic damage, accurate registration of the ischemic lesion on follow-up MRI to the results obtained in the first MRI is essential. Problems in the registration of stroke images include differences in patient orientation and/or low cooperativeness of the patient in the hyperacute stage of stroke. the aim of the present study is to develop a robust method of stroke image registration.
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We present a physically-based, elastically deformable particle system model that combines the oriented particles used in surfaceonly models, and the unoriented particles used in volume-only simulations into a bag of p...
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In order to improve the clinical usefulness of computer-assisted fluoroscopic navigation, a new algorithm to automatically determine the calibration of fluoroscopic images has been developed. this is a challenging tas...
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New surgical navigation techniques incorporate the use of live surgical endoscope video with 3D reconstructed MRI or CT images of a patients anatomy. this image-enhanced endoscopy requires calibration of the endoscope...
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Accurate brain tissue segmentation by intensity-based voxel classification of MR images is complicated by partial volume (PV) voxels that contain a mixture of two or more tissue types. In this paper 1, we present a st...
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image registration is the process of establishing a common geometric reference frame between two or more data sets from the same or different imaging modalities possibly taken at different times. In the context of med...
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A method is presented that aims at finding the central vessel axis in two and three dimensional angiographic images based on a single user defined point. After the vessels in the image are enhanced using a special pur...
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this paper presents an original knowledge driven automatic contour detection approach based on neuro-fuzzy techniques. the method simulates a trained virtual autonomous mobile robot that delineates the organ outlines ...
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Volume registration, by means of minimizing rms pixel value differ- ences, was tested on pairs of pelvic CT scans in a perturbation experiment to determine its robustness. the tests included registration of 9 scans to...
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