Results 61 to 70 of about 30,575 (187)

A current perspective on stereotactic body radiation therapy for pancreatic cancer. [PDF]

, 2016
Pancreatic cancer is a formidable malignancy with poor outcomes. The majority of patients are unable to undergo resection, which remains the only potentially curative treatment option.
Czito, Brian G, Hong, Julian C, Palta, Manisha, Willett, Christopher G   +3 more
core   +2 more sources

The role of a radiopaque peri-rectal hydrogel spacer in aiding accurate daily image-guidance for prostate stereotactic radiotherapy

Frontiers in Oncology
IntroductionPrecise patient positioning with image guidance (IGRT) is essential for safe prostate radiotherapy. We present the first report of utilizing a CT-visible hydrogel spacer, used to decrease rectal radiation dose, as a surrogate fiducial marker ...
Oded Icht, Oded Icht, Shir Schlosser, Shir Schlosser, Miriam Weinstock-Sabbah, Mor Rephael, Dimitri Bragilovski, Assaf Moore, Assaf Moore, Tzippora Shochat, Dror Limon, Dror Limon, Elisha Fredman, Elisha Fredman   +13 more
doaj   +1 more source

PTV margin for dose escalated radiation therapy of prostate cancer with daily on-line realignment using internal fiducial markers: Monte Carlo approach and dose population histogram (DPH) analysis. [PDF]

, 2006
Using internal fiducial markers and electronic portal imaging (EPID) to realign patients has been shown to significantly reduce positioning uncertainties in prostate radiation treatment.
Liu, Mitchell, Moiseenko, Vitali, Zhang, Miao   +2 more
core   +1 more source

Calculating tumor trajectory and dose-of-the-day using cone-beam CT projections

, 2015
Purpose: Cone-beam CT (CBCT) projection images provide anatomical data in real-time over several respiratory cycles, forming a comprehensive picture of tumor movement.
Jones, Bernard L., Miften, Moyed, Westerly, David   +2 more
core   +1 more source

Building with Drones: Accurate 3D Facade Reconstruction using MAVs

, 2015
Automatic reconstruction of 3D models from images using multi-view Structure-from-Motion methods has been one of the most fruitful outcomes of computer vision.
Bischof, Horst, Daftry, Shreyansh, Hoppe, Christof   +2 more
core   +1 more source

Presentation Assistant and Kiosk Interaction with Fiducial Markers

2007 IEEE International Workshop on Haptic, Audio and Visual Environments and Games, 2007
Fiducial markers and computer vision software provide a low cost and flexible way for human-computer interaction. Using the high reliability and minimal image pixel requirements of the ARTag fiducial marker system we are able to identify users and perform control actions with a simple small printed pattern. We describe two novel applications.
Crease, Murray, Fiala, Mark
openaire   +3 more sources

Linear EBUS-guided fiducial marker placement to guide radiotherapy for endobronchial, radiographically occult synchronous primary squamous cell carcinoma of the lung

Respiratory Medicine Case Reports, 2017
Radiation therapy has emerged as a useful alternative therapy for patients with early-stage, non-resectable lung cancer. In patients whose malignancies are difficult to localize on computed tomography imaging, such therapy becomes difficult.
David Maurice Chambers, Gregory John Pfister, Umair Ahmad Gauhar   +2 more
doaj   +1 more source

Cramer-Rao Lower Bound for Point Based Image Registration with Heteroscedastic Error Model for Application in Single Molecule Microscopy

, 2015
The Cramer-Rao lower bound for the estimation of the affine transformation parameters in a multivariate heteroscedastic errors-in-variables model is derived.
Cohen, E. A. K., Kim, D., Ober, R. J.
core   +1 more source

Assessment of Multiple Fiducial Marker Trackers on Hololens 2

IEEE Access
Fiducial markers play a fundamental role in various fields in which precise localization and tracking are paramount. In Augmented Reality, they provide a known reference point in the physical world so that AR systems can accurately identify, track, and ...
Gabriel M. Costa, Marcelo R. Petry, Joao G. Martins, Antonio Paulo G. M. Moreira   +3 more
doaj   +1 more source

Robot kinematic structure classification from time series of visual data

, 2019
In this paper we present a novel algorithm to solve the robot kinematic structure identification problem. Given a time series of data, typically obtained processing a set of visual observations, the proposed approach identifies the ordered sequence of ...
Carli, Ruggero, Libera, Alberto Dalla, Rossi, Alessandro, Susto, Gian Antonio, Terzi, Matteo   +4 more
core   +1 more source