Query Tools for Interactive Exploration of 3D Neuroimages: Cropping, Probe and Lens
[pdf] Authors: Wu, Shin - Ting, José Elías Yuri Vidalón, Wallace Souza Loos and Ana Carolina Coan Published in Proceedings of
XXVI SIBGRAPI - Conference on Graphics, Patterns and Images Abstract
Dynamic queries continuously update the data that is visualized in
accordance with the user actions. They are typically applied for
visual information seeking. This paper proposes to introduce this
interaction style for exploring 3D medical neuroimages in its original
form, enhancing visual seeking technology in a medical diagnostic
procedure. More precisely, we present three dynamic query tools that
allow the user to change the focus on-the-fly, while the surrounding
tissue is preserved. They are a curvilinear cropper, a volumetric
probe and a movable magnifying lens. Once information-preserving
visualization is essential for accurate diagnosis and legal
protection, the dataset is in its original form. The originality of our
work relies on the input interface through which an expert can
directly manipulate those tools on the raw data and the responsiveness
of each displayed voxel by exploiting the power of GPUs. The proposed
techniques have been integrated in a visualization prototype and were
assessed by the neuroimaging experts, who were be able to identify
subtle lesions in the brain.
Interactive Multimodal Visualization for 3D Neuroimage Exploration
[pdf] Authors: Wu, Shin-Ting, Lionis de Souza Watanabe, Wallace Souza Loos, Ana Carolina Coan, Bárbara Juarez Amorim, Clarissa Lin Yasuda and Fernando Cendes Published in
Journal of Epilepsy and Clinical Neurophysiology Abstract
Approximately 30% of patients with focal epilepsies have seizures resistant to antiepileptic drugs and surgical
treatment is the best option for seizure control in these cases. The precise localization of epileptogenic
focus and the brain structural abnormalities related to it are essential for both surgical planning and good
postoperative outcome. However, in some patients the brain abnormalities related to the epileptic focus are subtle
and difficult to be detected in the conventional visual analysis of the MRI studies. This work presents a 3D interactive
multimodal environment which allows the co-registration of different structural and functional neuroimaging and enables
a neuroscientist to intuitively visualize the cortical lamination