WE-C-BRB-01: In Vivo Measurement of Proton Stopping Power Ratios in Patients Using Dual Energy Computed Tomography

2009 ◽  
Vol 36 (6Part24) ◽  
pp. 2757-2757 ◽  
Author(s):  
M Yang ◽  
G Virshup ◽  
J Clayton ◽  
X Zhu ◽  
R Mohan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Dual Energy ◽  
Stopping Power ◽  
Dual Energy Computed Tomography ◽  
In Vivo Measurement

scholarly journals The Possibility for Iodine Concentration Determination in a Phantom with Known Titers of an Iodine-Containing Contrast Agent, by Using Dual-Energy Computed Tomography

2020 ◽  
Vol 100 (6) ◽  
pp. 335-338
Author(s):  
A. S. Chaban ◽  
V. E. Sinitsyn
Keyword(s):  
Computed Tomography ◽  
Contrast Agent ◽  
Measurement Errors ◽  
Iodine Concentration ◽  
Dual Energy ◽  
In Vivo Studies ◽  
Single Source ◽  
Dual Energy Computed Tomography ◽  
True Concentration

Objective: to study the capabilities of single-source dual-energy computed tomography (DECT) in quantifying the concentration of iodine in solutions.Material and methods. Single-source DECT was performed using a phantom containing a set of 5 tubes with a different titer of the iodine-containing contrast agent Iopamidol. Further, the obtained images were used to construct iodine maps; and the concentration of iodine was measured within the volume of the titrated contrast agent.Results. Despite a high correlation between the measured iodine concentration in solution with the true concentration (Pearson's correlation coefficient r = 0.98; p < 0.01), there is a measurement error that was 4.8 to 23% at different dilutions.Conclusion. Signal-source rapid voltage switching DECT does not allow precise measurements of the true concentration of iodine in solution. To eliminate measurement errors in further in vivo studies using singlesource DECT, it may be that attention must be paid to the measurement of normalized iodine concentration. 

In Vivo Analysis of Urinary Stones With Dual-Energy Computed Tomography

2019 ◽  
Vol 43 (2) ◽  
pp. 214-219 ◽  
Author(s):  
Hasan Erdogan ◽  
Osman Temizoz ◽  
Mustafa Koplay ◽  
Bahadir Ozturk
Keyword(s):  
Computed Tomography ◽  
Dual Energy ◽  
Urinary Stones ◽  
Dual Energy Computed Tomography ◽  
In Vivo Analysis
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