scholarly journals High-performance soft-tissue imaging in extremity cone-beam CT

2014 ◽  
Author(s):  
W. Zbijewski ◽  
A. Sisniega ◽  
J. W. Stayman ◽  
A. Muhit ◽  
G. Thawait ◽  
...  
Keyword(s):  
Soft Tissue ◽  
High Performance ◽  
Cone Beam Ct ◽  
Tissue Imaging ◽  
Cone Beam

Achieving high-resolution soft-tissue imaging with cone-beam CT: a two-pronged approach for modulation of x-ray fluence and detector gain

2005 ◽  
Author(s):  
S. A. Graham ◽  
J. H. Siewerdsen ◽  
D. J. Moseley ◽  
H. Keller ◽  
N. A. Shkumat ◽  
...  
Keyword(s):  
High Resolution ◽  
Soft Tissue ◽  
Cone Beam Ct ◽  
Tissue Imaging ◽  
Cone Beam ◽  
X Ray

scholarly journals Improving soft tissue imaging with volume-of-interest cone-beam CT

2021 ◽  
Author(s):  
Christopher Huynh Huynh
Keyword(s):  
Soft Tissue ◽  
Cone Beam Ct ◽  
Field Size ◽  
Tissue Imaging ◽  
Cone Beam ◽  
Projection Data ◽  
Full Field ◽  
Volume Of Interest ◽  
Photon Fluence ◽  
Intermediate Image

Current cone-beam CT systems acquire full field-of-view projections in which x-ray scatter degrades the contrast of soft-tissue in the reconstructed images. The objective of this work was to simulate volume-of-interest (VOI) imaging, which reduces scatter and dose to the patient through beam collimation, to investigate the improvements in soft-tissue visibility on the Gamma Knife Icon. The results indicated that as field size decreased, contrast and noise increased, leading to only modest improvements in the contrast-to-noise ratio when using the same initial photon fluence. A reconstruction framework called the interior virtual method was adapted to suppress truncation-induced artifacts and noise in the VOI image. In this framework the projection data were extrapolated using a cosine function, an intermediate image was reconstructed analytically, and virtual projections of the intermediate image were created for iterative reconstruction. The framework supports high quality VOI reconstruction and can allow clinicians to optimize dose for soft-tissue visualization.

scholarly journals Soft-tissue imaging in low-dose, C-arm cone-beam CT using statistical image reconstruction

2013 ◽  
Author(s):  
Adam S. Wang ◽  
Sebastian Schafer ◽  
J. W. Stayman ◽  
Yoshi Otake ◽  
Marc S. Sussman ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Image Reconstruction ◽  
Low Dose ◽  
Cone Beam Ct ◽  
Tissue Imaging ◽  
Cone Beam ◽  
Statistical Image Reconstruction

scholarly journals Soft-tissue imaging with C-arm cone-beam CT using statistical reconstruction

2014 ◽  
Vol 59 (4) ◽  
pp. 1005-1026 ◽  
Author(s):  
Adam S Wang ◽  
J Webster Stayman ◽  
Yoshito Otake ◽  
Gerhard Kleinszig ◽  
Sebastian Vogt ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Cone Beam Ct ◽  
Tissue Imaging ◽  
Cone Beam ◽  
Statistical Reconstruction

scholarly journals Improving soft tissue imaging with volume-of-interest cone-beam CT

2021 ◽  
Author(s):  
Christopher Huynh Huynh
Keyword(s):  
Soft Tissue ◽  
Cone Beam Ct ◽  
Field Size ◽  
Tissue Imaging ◽  
Cone Beam ◽  
Projection Data ◽  
Full Field ◽  
Volume Of Interest ◽  
Photon Fluence ◽  
Intermediate Image

Current cone-beam CT systems acquire full field-of-view projections in which x-ray scatter degrades the contrast of soft-tissue in the reconstructed images. The objective of this work was to simulate volume-of-interest (VOI) imaging, which reduces scatter and dose to the patient through beam collimation, to investigate the improvements in soft-tissue visibility on the Gamma Knife Icon. The results indicated that as field size decreased, contrast and noise increased, leading to only modest improvements in the contrast-to-noise ratio when using the same initial photon fluence. A reconstruction framework called the interior virtual method was adapted to suppress truncation-induced artifacts and noise in the VOI image. In this framework the projection data were extrapolated using a cosine function, an intermediate image was reconstructed analytically, and virtual projections of the intermediate image were created for iterative reconstruction. The framework supports high quality VOI reconstruction and can allow clinicians to optimize dose for soft-tissue visualization.

Soft-tissue contrast resolution within the head of human cadaver by means of flat-detector-based cone-beam CT

2004 ◽  
Author(s):  
Jens Wiegert ◽  
Matthias Bertram ◽  
Dirk Schaefer ◽  
Norbert Conrads ◽  
Niels Noordhoek ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Human Cadaver ◽  
Flat Detector ◽  
Contrast Resolution ◽  
Soft Tissue Contrast ◽  
Tissue Contrast

Soft tissue thickness in Brazilian adults of different skeletal classes and facial types: A cone beam CT – Study

2020 ◽  
Vol 47 ◽  
pp. 101743
Author(s):  
Amanda Farias Gomes ◽  
Debora Duarte Moreira ◽  
Mariana Fabbro Zanon ◽  
Francisco Carlos Groppo ◽  
Francisco Haiter-Neto ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Tissue Thickness ◽  
Soft Tissue Thickness ◽  
Facial Types

WE-D-I-6B-01: Soft Tissue Visualization Using a Highly Efficient Megavoltage Cone Beam CT Imaging System

2005 ◽  
Vol 32 (6Part19) ◽  
pp. 2131-2131 ◽  
Author(s):  
F Ghelmansarai ◽  
A Bani-Hashemi ◽  
J Pouliot ◽  
E Calderon ◽  
P Hernandez ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Imaging System ◽  
Cone Beam Ct ◽  
Ct Imaging ◽  
Cone Beam ◽  
Highly Efficient ◽  
Megavoltage Cone Beam Ct
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