An object specific and dose-sparing scatter correction approach for a dedicated cone-beam breast CT system using a parallel-hole collimator

2012 ◽  
Author(s):  
Kai Yang ◽  
George Burkett, Jr. ◽  
John M. Boone
Keyword(s):  
Scatter Correction ◽  
Cone Beam ◽  
Breast Ct ◽  
Parallel Hole Collimator ◽  
Dose Sparing ◽  
Ct System ◽  
Parallel Hole

Noise characteristics for cone beam collimators: a comparison with parallel hole collimator

1988 ◽  
Vol 33 (5) ◽  
pp. 541-555 ◽  
Author(s):  
L J Hahn ◽  
R J Jaszczak ◽  
G T Gullberg ◽  
C E Floyd ◽  
S H Manglos ◽  
...  
Keyword(s):  
Cone Beam ◽  
Noise Characteristics ◽  
Parallel Hole Collimator ◽  
Parallel Hole

SU-F-J-211: Scatter Correction for Clinical Cone-Beam CT System Using An Optimized Stationary Beam Blocker with a Single Scan

2016 ◽  
Vol 43 (6Part12) ◽  
pp. 3457-3457 ◽  
Author(s):  
X Liang ◽  
S Gong ◽  
Q Zhou ◽  
Z Zhang ◽  
Y Xie ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Scatter Correction ◽  
Cone Beam ◽  
Ct System

scholarly journals Free propagation phase-contrast breast CT provides higher image quality than cone-beam breast-CT at low radiation doses: a feasibility study on human mastectomies

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
S. Pacilè ◽  
C. Dullin ◽  
P. Baran ◽  
M. Tonutti ◽  
C. Perske ◽  
...  
Keyword(s):  
Image Quality ◽  
Breast Cancer Diagnosis ◽  
Cone Beam ◽  
Histological Evaluation ◽  
Data Sets ◽  
Breast Ct ◽  
Diagnostic Potential ◽  
Independent Expert ◽  
Malignant Lesions ◽  
Ct System

Abstract In this study we demonstrate the first direct comparison between synchrotron x-ray propagation-based CT (PB-CT) and cone-beam breast-CT (CB-CT) on human mastectomy specimens (N = 12) including different benign and malignant lesions. The image quality and diagnostic power of the obtained data sets were compared and judged by two independent expert radiologists. Two cases are presented in detail in this paper including a comparison with the corresponding histological evaluation. Results indicate that with PB-CT it is possible to increase the level of contrast-to-noise ratio (CNR) keeping the same level of dose used for the CB-CT or achieve the same level of CNR reached by CB-CT at a lower level of dose. In other words, PB-CT can achieve a higher diagnostic potential compared to the commercial breast-CT system while also delivering a considerably lower mean glandular dose. Therefore, we believe that PB-CT technique, if translated to a clinical setting, could have a significant impact in improving breast cancer diagnosis.

scholarly journals The role of off-focus radiation in scatter correction for dedicated cone beam breast CT

2017 ◽  
Vol 45 (1) ◽  
pp. 191-201 ◽  
Author(s):  
Linxi Shi ◽  
Srinivasan Vedantham ◽  
Andrew Karellas ◽  
Lei Zhu
Keyword(s):  
Scatter Correction ◽  
Cone Beam ◽  
Breast Ct ◽  
Focus Radiation

scholarly journals X-ray scatter correction for dedicated cone beam breast CT using a forward-projection model

2017 ◽  
Vol 44 (6) ◽  
pp. 2312-2320 ◽  
Author(s):  
Linxi Shi ◽  
Srinivasan Vedantham ◽  
Andrew Karellas ◽  
Lei Zhu
Keyword(s):  
Scatter Correction ◽  
Cone Beam ◽  
Projection Model ◽  
Breast Ct ◽  
X Ray ◽  
Forward Projection

Scatter Correction Method for Cone Beam CT Using Beam Attenuation Grid

2011 ◽  
Vol 480-481 ◽  
pp. 341-346
Author(s):  
Shi Peng Xie ◽  
Li Min Luo ◽  
Li Feng Yang ◽  
Feng Zhang
Keyword(s):  
Cone Beam Ct ◽  
Scatter Correction ◽  
Correction Method ◽  
Cone Beam ◽  
Computationally Efficient ◽  
Beam Attenuation ◽  
Projection Image ◽  
Projection Images ◽  
Ct System

The scattering phenomenon has an important influence on the reconstructed image in Cone Beam CT (CBCT) imaging systems, and is a long-lasting research topic on CBCT. Focusing on the scatter artifact in the cone beam CT system, we proposed a new scatter correction method that needed to add a beam attenuation grid (BAG) between the X - ray source and the tested object. This study educed the scatter correction algorithm based on the Beer theorem. Through subtracting the scatter distribution image from the original projection image, we can acquire the scatter-corrected projection Images of the tested object. The method has been verified by preliminary experimental results on phantom. The result showed that the method can effectively reduce the scatter artifacts, increase the image contrast and increase the quality of the reconstructed slice image. This method is computationally efficient and easy to implement without the loss of real-time imaging capabilities.

Library-based scatter correction for dedicated cone beam breast CT: a feasibility study

2016 ◽  
Author(s):  
Linxi Shi ◽  
Srinivasan Vedantham ◽  
Andrew Karellas ◽  
Lei Zhu
Keyword(s):  
Feasibility Study ◽  
Scatter Correction ◽  
Cone Beam ◽  
Breast Ct

WE-DE-207B-12: Scatter Correction for Dedicated Cone Beam Breast CT Based On a Forward Projection Model

2016 ◽  
Vol 43 (6Part40) ◽  
pp. 3820-3820
Author(s):  
L Shi ◽  
S Vedantham ◽  
A Karellas ◽  
L Zhu
Keyword(s):  
Scatter Correction ◽  
Cone Beam ◽  
Projection Model ◽  
Breast Ct ◽  
Forward Projection
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