2011
DOI: 10.3109/10929088.2011.585805
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Fusion and visualization of intraoperative cortical images with preoperative models for epilepsy surgical planning and guidance

Abstract: Objective: During epilepsy surgery it is important for the surgeon to correlate the preoperative cortical morphology (from preoperative images) with the intraoperative environment. Augmented Reality (AR) provides a solution for combining the real environment with virtual models. However, AR usually requires the use of specialized displays, and its effectiveness in the surgery still needs to be evaluated. The objective of this research was to develop an alternative approach to provide enhanced visualization by … Show more

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Cited by 20 publications
(17 citation statements)
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“…The experimental values are very close to the reference ones, although there is some jitter that increases with distance, as expected. To obtain a better understanding about the significance of this deviation, in Figure 12 we present the absolute errors of Z (in mm), as well as the corresponding marker width error calculated from the experimental and reference values of the width of the tip (d theor = f  L/Z th , where L is the physical width of the marker; see equation (16)). For working distances close to the camera (< 17 cm), the average error was found: Z err = 2.5 AE 2.1 mm (AE SD), whereas for longer distances, Z err = 6.2 AE 4.5 mm (AE SD, 17 cm < Z < 26 cm).…”
Section: D Pose Validationmentioning
confidence: 99%
“…The experimental values are very close to the reference ones, although there is some jitter that increases with distance, as expected. To obtain a better understanding about the significance of this deviation, in Figure 12 we present the absolute errors of Z (in mm), as well as the corresponding marker width error calculated from the experimental and reference values of the width of the tip (d theor = f  L/Z th , where L is the physical width of the marker; see equation (16)). For working distances close to the camera (< 17 cm), the average error was found: Z err = 2.5 AE 2.1 mm (AE SD), whereas for longer distances, Z err = 6.2 AE 4.5 mm (AE SD, 17 cm < Z < 26 cm).…”
Section: D Pose Validationmentioning
confidence: 99%
“…The possibility that we may have an X-ray vision, enabling the neurosurgeon to see and interact with the precise location of the hematoma through a 3D model of the skull, represents a breakthrough that cannot be overlooked or underutilized [3639]. Furthermore, the incorporation of this technology allows a precision that enables the performance of minimally invasive procedures with similar success rates to established procedures [1,4].…”
Section: Discussionmentioning
confidence: 99%
“…This in turn degrades the fidelity of registration between ESM and fMRI. Figure 5 demonstrates our approach, which employs automatic 2D to 3D projective registration to fuse an interoperative cortical photographic image onto an MR brain image that incorporates a preoperative fMRI activation map [32]. In, Figure 5(a) the label “F” is a speech arrest site elicited by ESM that corresponds well to the peak of fMRI activation in the frontal lobe as shown in Figure 5(b).…”
Section: Role Of Fmri In Localization Of Language Functionmentioning
confidence: 99%