Low-Dose Coronary CT Angiography With Prospective ECG Triggering: Validation of a Contrast Material Protocol Adapted to Body Mass Index

2009 ◽  
Vol 193 (3) ◽  
pp. 802-806 ◽  
Author(s):  
Lars Husmann ◽  
Bernhard A. Herzog ◽  
Nina Burkhard ◽  
Ines Valenta ◽  
Irene A. Burger ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Ct Angiography ◽  
Body Mass ◽  
Coronary Ct Angiography ◽  
Low Dose ◽  
Contrast Material ◽  
Coronary Ct ◽  
Prospective Ecg Triggering

Abstract 5804: Validation of a Body Mass Index Adapted Scanning Protocol for Low-Dose 64-Slice CT Coronary Angiography with Prospective ECG-Triggering

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Fuminari Tatsugami ◽  
Lars Husmann ◽  
Bernhard A Herzog ◽  
Nina Burkhard ◽  
Ines Valenta ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Coronary Angiography ◽  
Body Mass ◽  
Low Dose ◽  
Contrast Material ◽  
Image Noise ◽  
Effective Radiation Dose ◽  
Scanning Protocol ◽  
Effective Radiation ◽  
Prospective Ecg Triggering

As an increase in body mass index (BMI) confers a higher image noise in computed tomography coronary angiography (CTCA), we have validated a BMI-adapted scanning protocol for low-dose 64-slice CTCA with prospective electrocardiogram (ECG)-triggering. One-hundred-one consecutive patients underwent CTCA with prospective ECG-triggering, using a fixed contrast material protocol (80mL iodixanol, 50mL saline chaser, flow rate of 5mL/sec). Tube voltage and current were adapted to BMI (table ). Attenuation (Houndsfield units, HU) was measured and contrast-to-noise ratio (CNR) calculated for the proximal right coronary artery (RCA) and left main artery (LMA). Image noise was determined as the standard deviation of attenuation in the ascending aorta. Mean BMI was 25.7±4.3kg/m 2 (range 18.2–38.8kg/m 2 ) the mean effective radiation dose was 2.1±0.7mSv (range 1.0 –3.2mSv). There was no significant correlation between BMI and image noise (r= 0.11, P = 0.284), indicating optimal protocol adjustment. However, BMI was inversely correlated to vessel attenuation (RCA: r=−0.45, P <0.001; LMA: r=−0.47, P <0.001), and CNR (RCA: r=−0.39, P <0.001; LMA: r=−0.37, P <0.001). The proposed BMI-adapted scanning parameters results in similar image noise regardless of BMI. Increased bolus dilution due to larger blood volume may have contributed to a decrease in CNR and vessel attenuation in higher BMI as a fixed contrast material bolus was used. Table

Coronary CT Angiography Using Low Iodine Delivery Rate and Tube Voltage Determined by Body Mass Index: Superiority in Clinical Practice

2019 ◽  
Vol 39 (5) ◽  
pp. 825-830 ◽  
Author(s):  
Wang Yuan ◽  
Ting-ting Qu ◽  
Hui-juan Wang ◽  
Mei-yu Wang ◽  
Yuan Qu ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Clinical Practice ◽  
Ct Angiography ◽  
Body Mass ◽  
Coronary Ct Angiography ◽  
Delivery Rate ◽  
Tube Voltage ◽  
Coronary Ct

Coronary CT Angiography of Patients With a Normal Body Mass Index Using 80 kVp Versus 100 kVp: A Prospective, Multicenter, Multivendor Randomized Trial

2011 ◽  
Vol 197 (5) ◽  
pp. W860-W867 ◽  
Author(s):  
Troy M. LaBounty ◽  
Jonathon Leipsic ◽  
Rohan Poulter ◽  
David Wood ◽  
Mark Johnson ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Randomized Trial ◽  
Ct Angiography ◽  
Body Mass ◽  
Coronary Ct Angiography ◽  
Normal Body Mass Index ◽  
Normal Body ◽  
Coronary Ct

Coronary CT angiography in obese patients using 3rd generation dual-source CT: effect of body mass index on image quality

2015 ◽  
Vol 26 (9) ◽  
pp. 2937-2946 ◽  
Author(s):  
Stefanie Mangold ◽  
Julian L. Wichmann ◽  
U. Joseph Schoepf ◽  
Sheldon E. Litwin ◽  
Christian Canstein ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Image Quality ◽  
Ct Angiography ◽  
Body Mass ◽  
Coronary Ct Angiography ◽  
Obese Patients ◽  
Dual Source Ct ◽  
Coronary Ct ◽  
Dual Source

scholarly journals Prognostic performance of low-dose coronary CT angiography with prospective ECG triggering

Heart ◽  
2011 ◽  
Vol 97 (17) ◽  
pp. 1385-1390 ◽  
Author(s):  
R. R. Buechel ◽  
A. P. Pazhenkottil ◽  
B. A. Herzog ◽  
M. Brueckner ◽  
R. Nkoulou ◽  
...  
Keyword(s):  
Ct Angiography ◽  
Coronary Ct Angiography ◽  
Low Dose ◽  
Prognostic Performance ◽  
Coronary Ct ◽  
Prospective Ecg Triggering

scholarly journals Detection of Coronary Artery Stenoses by Low-Dose, Prospectively ECG-Triggered, High-Pitch Spiral Coronary CT Angiography

2011 ◽  
Vol 4 (4) ◽  
pp. 328-337 ◽  
Author(s):  
Stephan Achenbach ◽  
Tobias Goroll ◽  
Martin Seltmann ◽  
Tobias Pflederer ◽  
Katharina Anders ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Ct Angiography ◽  
Coronary Ct Angiography ◽  
Low Dose ◽  
High Pitch ◽  
Coronary Ct ◽  
Coronary Artery Stenoses
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