An online cross-scatter correction algorithm for dual-source CT: effects on CT number accuracy and noise

2009 ◽  
Author(s):  
Christian D. Eusemann ◽  
Anja Apel ◽  
Bernhard Schmidt ◽  
Alisa I. Walz-Flannigan ◽  
Megan C. Jacobsen ◽  
...  
Keyword(s):  
Scatter Correction ◽  
Dual Source Ct ◽  
Correction Algorithm ◽  
Ct Number ◽  
Dual Source ◽  
Cross Scatter

scholarly journals Deep Learning‐Based Forward and Cross‐Scatter Correction in Dual Source CT

2021 ◽  
Author(s):  
Julien Erath ◽  
Tim Vöth ◽  
Joscha Maier ◽  
Eric Fournié ◽  
Martin Petersilka ◽  
...  
Keyword(s):  
Deep Learning ◽  
Scatter Correction ◽  
Dual Source Ct ◽  
Dual Source ◽  
Cross Scatter

Strategies for scatter correction in dual source CT

2010 ◽  
Vol 37 (11) ◽  
pp. 5971-5992 ◽  
Author(s):  
M. Petersilka ◽  
K. Stierstorfer ◽  
H. Bruder ◽  
T. Flohr
Keyword(s):  
Scatter Correction ◽  
Dual Source Ct ◽  
Dual Source

Dual source CT (DSCT) imaging of obese patients: evaluation of CT number accuracy, uniformity, and noise

2009 ◽  
Author(s):  
A. Walz-Flannigan ◽  
B, Schmidt ◽  
A. Apel ◽  
C. Eusemann ◽  
L. Yu ◽  
...  
Keyword(s):  
Obese Patients ◽  
Dual Source Ct ◽  
Ct Number ◽  
Dual Source

scholarly journals Scatter Correction Associated with Dedicated Dual-source CT Hardware Improves Accuracy of Lung Air Measures

2013 ◽  
Vol 20 (11) ◽  
pp. 1334-1343 ◽  
Author(s):  
Sean D. Mobberley ◽  
Matthew K. Fuld ◽  
Jered P. Sieren ◽  
Andrew N. Primak ◽  
Eric A. Hoffman
Keyword(s):  
Scatter Correction ◽  
Dual Source Ct ◽  
Dual Source

Correction of cross-scatter in next generation dual source CT (DSCT) scanners

2008 ◽  
Author(s):  
H. Bruder ◽  
K. Stierstorfer ◽  
M. Petersilka ◽  
C. Wiegand ◽  
C. Suess ◽  
...  
Keyword(s):  
Dual Source Ct ◽  
Next Generation ◽  
Dual Source ◽  
Cross Scatter

scholarly journals Advanced Noise-Optimized Dual-Energy Virtual Monochromatic Imaging vs. Conventional 120-kVp CT Imaging: Image Quality Assessment

2021 ◽  
Author(s):  
Adnan Honardari ◽  
Ahmad Bitarafan-Rajabi ◽  
Razieh Solgi ◽  
Mahsa Shakeri ◽  
Kiara Rezaei-Kalantari ◽  
...  
Keyword(s):  
Image Quality ◽  
Noise Reduction ◽  
Contrast Material ◽  
Ct Images ◽  
Dual Energy ◽  
Image Noise ◽  
Dual Source Ct ◽  
Ct Number ◽  
Dual Source ◽  
Improvement Ratio

Purpose: This study aimed at evaluating the image quality characteristics of advanced noise-optimized and traditional virtual monochromatic images compared with conventional 120-kVp images from second-generation Dual-Source CT. Materials and Methods: For spiral scans six syringes filled with diluted iodine contrast material (1, 2, 5, 10, 15, 20 mg I/ml) were inserted into the test phantom and scanned with a second-generation dual-source CT in both single-energy (120-kVp) and dual-energy modes. Images set contain conventional single-energy 120-kVp, and virtual monochromatic were reconstructed with energies ranging from 40 to 190-keV in 1-keV steps. An energy-domain noise reduction algorithm was applied and the mean CT number, image noise, and iodine CNR were calculated. Results: The iodine CT number of conventional 120-kVp images compared with monochromatic of 40-, 50-, 60- and 70-keV images showed increase. The improvement ratio of image noise on Advanced Virtual Monochromatic Images (AVMIs) compared with the Traditional Virtual Monochromatic Images (TVMIs) at energies of 40-, 50-, 60, 70-keV was 52.9%, 35.7%, 8.1%, 2.1%, respectively. At AVMIs from 75- to 190-keV, the image noise value was less than conventional 120-kVp images. CNR improvement ratio at 20 mg/ml of iodinated contrast material for TVMIs and AVMIs compared to 120-kVp CT images and AVMIs compared to TVMI was 18.3% and 56.3%, 32.1% respectively. Conclusion: Both TVMIs (in energies ranging from 54 to 71-keV) and AVMIs (in energies ranging from 40 to 74-keV) represent improvement in the iodine contrast-to-noise ratio than conventional 120-kVp CT images for the same radiation dose. Also, AVMIs compared to TVMIs have been obtained considerable noise reduction and CNR improvement for low-energy virtual monochromatic images. In the present study, we show that virtual monochromatic image and its Advanced version (AVMI) may boost the dual-energy CT advantages by providing higher CNR images in the same exposure value compared to routinely acquired single-energy CT images.

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