Traditional DBS, based a deep brain atlas in printed form, places restrictions on the choice of approach and planning involves considerable mental computation. Recent work in computer-guided DBS exploits one or two of the following: a digital brain atlas [1]; an electrophysiological (EP) database [2]; a model of venous and arterial structures [3]; and intraoperative MRI (ioMRI) guidance [4]. To...

Image-based refined 3D reconstruction relies on high-resolution and multi-angle images of scenes. The assistance multi-rotor drones gimbal provides great convenience for image acquisition. However, capturing with manual control generally takes a long time. It could easily lead to redundant or insufficient local area coverage, resulting in poor quality the reconstructed model. We propose surface...

YAOZONG GAO: ACCURATE SEGMENTATION OF CT PELVIC ORGANS VIA INCREMENTAL CASCADE LEARNING AND REGRESSION-BASED DEFORMABLE MODELS. (Under the direction of Dinggang Shen.) Accurate segmentation of male pelvic organs from computed tomography (CT) images is important in image guided radiotherapy (IGRT) of prostate cancer. The efficacy of radiation treatment highly depends on the segmentation accuracy...

The development of functional mapping techniques gives neurosurgeons many options for preoperative planning. Integrating functional and anatomic data can inform patient selection and surgical planning and makes functional mapping more accessible than when only invasive studies were available. However, the applications of functional mapping to neurosurgical patients are still evolving. Functiona...

TOWARD MAGNETIC RESONANCE ONLY TREATMENT PLANNING: DISTORTIONMITIGATION AND IMAGE-GUIDED RADIATION THERAPY VALIDATIONbyRYAN GLEN PRICEAugust 2016Advisor: Dr. Carri K. Glide-Hurst Major: Medical PhysicsDegree: Doctor of PhilosophyWhile MR-only treatment planning has shown promise, there are still severalwell-known challenges that are currently limiting widespread ...

The difficulty of POMDP planning depends on the size of the search space involved. Heuristics are often used to reduce the search space size and improve computational efficiency; however, there are few theoretical bounds on their effectiveness. In this paper, we use the covering number to characterize the size of the search space reachable under heuristics and connect the complexity of POMDP pl...

This short paper provides a high-level description of the planner CBP (Cost-Based Planner). CBP performs heuristic search in the state space using several heuristics. On one hand it uses look-ahead states based on relaxed plans to speed-up the search; on the other hand the search is also guided using a numerical heuristic and a selection of actions extracted from a relaxed planning graph. The r...