Correlation between low tube voltage in dual source CT coronary artery imaging with image quality and radiation dose

2014 ◽  
Vol 34 (4) ◽  
pp. 616-620 ◽  
Author(s):  
Zi-qiao Lei ◽  
Ping Han ◽  
Hai-bo Xu ◽  
Jian-ming Yu ◽  
Hong-li Liu
Keyword(s):  
Coronary Artery ◽  
Image Quality ◽  
Radiation Dose ◽  
Dual Source Ct ◽  
Coronary Artery Imaging ◽  
Tube Voltage ◽  
Low Tube Voltage ◽  
Dual Source

Third-generation dual-source CT of the neck using automated tube voltage adaptation in combination with advanced modeled iterative reconstruction: evaluation of image quality and radiation dose

2015 ◽  
Vol 26 (8) ◽  
pp. 2623-2631 ◽  
Author(s):  
Jan-Erik Scholtz ◽  
Julian L. Wichmann ◽  
Kristina Hüsers ◽  
Moritz H. Albrecht ◽  
Martin Beeres ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Iterative Reconstruction ◽  
Third Generation ◽  
Dual Source Ct ◽  
Tube Voltage ◽  
Dual Source

Image quality and radiation dose of low tube voltage 3rd generation dual-source coronary CT angiography in obese patients: a phantom study

2014 ◽  
Vol 24 (7) ◽  
pp. 1643-1650 ◽  
Author(s):  
Felix G. Meinel ◽  
Christian Canstein ◽  
U. Joseph Schoepf ◽  
Martin Sedlmaier ◽  
Bernhard Schmidt ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Ct Angiography ◽  
Coronary Ct Angiography ◽  
Phantom Study ◽  
Obese Patients ◽  
Tube Voltage ◽  
Low Tube Voltage ◽  
Coronary Ct ◽  
Dual Source

scholarly journals Radiation Dose Reduction of Chest CT with Iterative Reconstruction in Image Space - Part I: Studies on Image Quality Using Dual Source CT

2012 ◽  
Vol 13 (6) ◽  
pp. 711 ◽  
Author(s):  
Hye Jeon Hwang ◽  
Joon Beom Seo ◽  
Jin Seong Lee ◽  
Jae-Woo Song ◽  
Song Soo Kim ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Dose Reduction ◽  
Iterative Reconstruction ◽  
Chest Ct ◽  
Radiation Dose Reduction ◽  
Image Space ◽  
Dual Source Ct ◽  
Dual Source

scholarly journals Image Quality and Radiation Dose of Lower Extremity CT Angiography in 128 Slice Dual-Source CT: Comparison of High Pitch and Low Pitch

2014 ◽  
Vol 71 (3) ◽  
pp. 120 ◽  
Author(s):  
Jung Hwan Park ◽  
Ki Seok Choo ◽  
Ung Bae Jeon ◽  
Seung Kug Baik ◽  
Yong Woo Kim ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Lower Extremity ◽  
Ct Angiography ◽  
Dual Source Ct ◽  
High Pitch ◽  
Dual Source

scholarly journals The feasibility of low-concentration contrast and low tube voltage in computed tomography perfusion imaging: an animal study

2018 ◽  
Vol 38 (1) ◽  
Author(s):  
Yuning Pan ◽  
Aiqin Song ◽  
Shizhong Bu ◽  
Zhaoqian Chen ◽  
Qiuli Huang ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Perfusion Imaging ◽  
Ct Perfusion ◽  
Iodine Intake ◽  
Tube Voltage ◽  
Effective Radiation Dose ◽  
Low Concentration ◽  
Low Tube Voltage ◽  
Effective Radiation

Aim: To investigate the feasibility of low-concentration contrast (270 mg/ml) together with low tube voltage (80 kV) and adaptive iterative dose reduction (AIDR)-3D reconstruction in liver computed tomography (CT) perfusion imaging. Method: A total of 15 healthy New Zealand rabbits received two CT scans each. The first scan (control) was acquired at 100 kV and 100 mA with iopromide (370 mg/ml), while the second scan (experimental) was acquired at 80 kV and 100 mA with iodixanol (270 mg/ml) 24 h after the first scan. The obtained images were reconstructed with filtered back projection (FBP) and AIDR-3D in the control and experimental groups respectively. The perfusion parameters (hepatic artery perfusion [HAP], portal vein perfusion [PVP], hepatic perfusion index [HPI], and total liver perfusion [TLP]) and image quality (image quality score, average CT value of abdomen aorta, signal-to-noise ratio [SNR], contrast-to-noise ratio [CNR], and figure of merit [FOM]) were compared using a paired t-test or Mann–Whitney U test between the two groups, when appropriate. The effective radiation dose and iodine intake were also recorded and compared. Results: With the exception of the FOM criteria, the image quality and perfusion parameters were not significantly different between the two groups. The effective radiation dose and iodine intake were 38.79% and 27.03% lower respectively, in the experimental group. Conclusion: Low-concentration contrast (iodixanol, 270 mg/ml) together with low tube voltage (80 kV) and AIDR-3D reconstruction help to reduce radiation dose and iodine intake without compromising perfusion parameters and image quality in liver CT perfusion imaging.

Comparison of Radiation Dose and Image Quality of Contrast-Enhanced Dual-Source CT of the Chest: Single-Versus Dual-Energy and Second-Versus Third-Generation Technology

2019 ◽  
Vol 212 (4) ◽  
pp. 741-747 ◽  
Author(s):  
Lukas Lenga ◽  
Doris Leithner ◽  
Julia L. Peterke ◽  
Moritz H. Albrecht ◽  
Tomas Gudauskas ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Dual Energy ◽  
Third Generation ◽  
Dual Source Ct ◽  
Contrast Enhanced ◽  
Dual Source ◽  
Single Versus ◽  
Generation Technology

scholarly journals Radiation dose and image quality of high-pitch emergency abdominal CT in obese patients using third-generation dual-source CT (DSCT)

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Robert Forbrig ◽  
Michael Ingrisch ◽  
Robert Stahl ◽  
Katharina Stella Winter ◽  
Maximilian Reiser ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Third Generation ◽  
Obese Patients ◽  
Dual Source Ct ◽  
High Pitch ◽  
Subjective Image Quality ◽  
Dual Source ◽  
Group A

Abstract In this third-generation dual-source CT (DSCT) study, we retrospectively investigated radiation dose and image quality of portal-venous high-pitch emergency CT in 60 patients (28 female, mean age 56 years) with a body mass index (BMI) ≥ 30 kg/m2. Patients were dichotomized in groups A (median BMI 31.5 kg/m2; n = 33) and B (36.8 kg/m2; n = 27). Volumetric CT dose index (CTDIvol), size-specific dose estimate (SSDE), dose length product (DLP) and effective dose (ED) were assessed. Contrast-to-noise ratio (CNR) and dose-independent figure-of-merit (FOM) CNR were calculated. Subjective image quality was assessed using a five-point scale. Mean values of CTDIvol, SSDE as well as normalized DLP and ED were 7.6 ± 1.8 mGy, 8.0 ± 1.8 mGy, 304 ± 74 mGy * cm and 5.2 ± 1.3 mSv for group A, and 12.6 ± 3.7 mGy, 11.0 ± 2.6 mGy, 521 ± 157 mGy * cm and 8.9 ± 2.7 mSv for group B (p < 0.001). CNR of the liver and spleen as well as each calculated FOM CNR were significantly higher in group A (p < 0.001). Subjective image quality was good in both groups. In conclusion, third-generation abdominal high-pitch emergency DSCT yields good image quality in obese patients. Radiation dose increases in patients with a BMI > 36.8 kg/m2.

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