نتایج جستجو برای: dimensional tomography

تعداد نتایج: 569408  

Journal: :Optics express 2005
Yeh-Chan Ahn Woonggyu Jung Jun Zhang Zhongping Chen

Laminar dispersion in a serpentine microchannel with a Y-shape inlet was investigated using optical coherence tomography (OCT) and optical Doppler tomography (ODT). Dimensionless analysis was performed to understand the complex convective diffusion phenomena. It was shown that OCT/ODT is not only a visualization method but also a methodology to characterize important physics: streamwise velocit...

Journal: :Optics letters 2013
Yair Rivenson Adrian Stern Joseph Rosen

Three-dimensional (3D) object tomography from a two-dimensional recorded hologram is a process of high-dimensional data inference from undersampled data. As such, recently, techniques developed in the field of compressive sensing and sparse representation have been applied for this task. While many applications of compressive sensing for tomography from digital holograms have been demonstrated ...

Journal: :Orthopedics 2013
Mark E Fleming Scott S Waterman Louis R Lewandowski Benjamin B Chi

Heterotopic ossification is a known complication of traumatic injuries. To minimize iatrogenic complications during excision, an understanding of anatomic relationships is essential. Current imaging modalities, such as computed tomography and plain radiographs, are limited to providing a 2-dimensional representation of a 3-dimensional problem. This study describes the benefits of 3-dimensional ...

2016
B. Imran Akca

Optical coherence tomography (OCT) is a non-invasive, three-dimensional imaging technique that offers close-to-histology-level image quality [1]. In conventional timedomain (TD)-OCT systems depth scanning is achieved by modifying the relative optical path length difference of the reference and the sample arms in a sequential way using mechanical scanners. Due to the moving reference mirror TD-O...

2014
Chul Ho Jang Hyung Chae Yang Tae Ho Um Yong Beom Cho

We report a rare case where Q-tip induced mixed hearing loss without perilymph fistula and demonstrate the need for computed tomography imaging with three-dimensional reconstruction where fracture and dislocation of the stapes are suspected. A 28-year-old male experienced an accidental penetrating injury by a Q-tip in the right ear 6 years previously. Temporal bone computed tomography revealed ...

Journal: :Orthopedics 2016
Ashwin Chowdhary Lisca Drittenbass Victor Dubois-Ferrière Richard Stern Mathieu Assal

Computer-assisted orthopedic surgery has developed dramatically during the past 2 decades. This article describes the use of intraoperative 3-dimensional computed tomography and navigation in foot and ankle surgery. Traditional imaging based on serial radiography or C-arm-based fluoroscopy does not provide simultaneous real-time 3-dimensional imaging, and thus leads to suboptimal visualization ...

Journal: :Archéosciences 2021

– Moisture detection inside pillars using electrical resistivity tomography (ERT). Three-dimensional ERT modeling non-conventional arrays. Jacobian matrix optimization method.

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2008
Anand P. Santhanam Twyla Willoughby Amish Shah Sanford L. Meeks Jannick P. Rolland Patrick Kupelian

In this paper, we present a real-time simulation and visualization framework that models a deformable surface lung model with tumor, simulates the tumor motion and predicts the amount of radiation doses that would be deposited in the moving lung tumor during the actual delivery of radiation. The model takes as input a subject-specific 4D Computed Tomography (4D CT) of lungs and computes a defor...

Journal: :Nuclear medicine communications 2008
Arman Rahmim Habib Zaidi

The recent introduction of high-resolution molecular imaging technology is considered by many experts as a major breakthrough that will potentially lead to a revolutionary paradigm shift in health care and revolutionize clinical practice. This paper intends to balance the capabilities of the two major molecular imaging modalities used in nuclear medicine, namely positron emission tomography (PE...

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