Volumetric image guidance via a stereotactic endoscope

Abstract

We have developed a surgical setup based on modern frameless stereotactic techniques that enables surgeons to visualize the field of view of the surgical endoscope, overlaid with the real-time and volumetrically reconstructed medical images, of a localized area of the patient's anatomy. Using this navigation system, the surgeon visualizes the surgical site via the surgical endoscope, while exploring the inner layers of the patient's anatomy by utilizing the three-dimensionally reconstructed image updates obtained by pre-operative images, such as Magnetic Resonance and/or Computed Tomography Imaging. This system also allows the surgeon to virtually "fly through and around" the site of the surgery to visualize several alternatives and qualitatively determine the best surgical approach. Moving endoscopes are tracked with infra-red stereovision cameras and diodes, allowing the determination of their spatial relation to the target lesion and the fiducial based patient/image registration.

Advanced Medical Displays: A Literature Review of Augmented Reality

“…Although endoscopic augmentation seems to be a straightforward step it has been realized as recently as the end of the 1990s by Freysinger et al [48] for ear, nose and throat (ENT) surgery and Shahidi and colleagues [49] for brain surgery. Fig.…”

Geração de malhas volumétricas a partir de imagens

“…Shahidi et al, 1998), simulação numérica de fenômenos físicos (Pescatore et al, 2001) e análise não invasiva de estruturas internas (Minghim et al, 2002;Ferrant et al, 2001). …”

A divided-screenwise hierarchical compositing for sort-last parallel volume rendering

“…For example, visualizing the invisible parts helps medical doctors in diagnosing patients and planning surgical strategies [3,17]. To observe such invisible objects, X-ray computed tomography (CT) scans create three-dimensional (3D) volumes by scanning the objects, and volume rendering methods produce two-dimensional (2D) images by mapping the volumes onto the screen, or the image plane.…”