Determination of ultrasound contrast agent shell rupture thresholds using double passive cavitation detection.

2009 ◽  
Vol 126 (4) ◽  
pp. 2175
Author(s):  
Daniel A. King ◽  
Alayna C. Roberts ◽  
Michael J. Malloy ◽  
Alexandar Haak ◽  
Christian C. Yoder ◽  
...  
Keyword(s):  
Contrast Agent ◽  
Ultrasound Contrast Agent ◽  
Ultrasound Contrast ◽  
Passive Cavitation Detection ◽  
Cavitation Detection

scholarly journals Determination of postexcitation thresholds for single ultrasound contrast agent microbubbles using double passive cavitation detection

2010 ◽  
Vol 127 (6) ◽  
pp. 3449-3455 ◽  
Author(s):  
Daniel A. King ◽  
Michael J. Malloy ◽  
Alayna C. Roberts ◽  
Alexander Haak ◽  
Christian C. Yoder ◽  
...  
Keyword(s):  
Contrast Agent ◽  
Ultrasound Contrast Agent ◽  
Ultrasound Contrast ◽  
Passive Cavitation Detection ◽  
Cavitation Detection

scholarly journals Impact of ultrasound contrast agent during transoesophageal echocardiography on the sizing of the left atrial appendage

Open Heart ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. e001403
Author(s):  
Henning Ebelt ◽  
Sarah Goetze ◽  
Anja Weida ◽  
Alexandra Offhaus
Keyword(s):  
Contrast Agent ◽  
Left Atrial ◽  
Left Atrial Appendage ◽  
Ultrasound Contrast Agent ◽  
Transoesophageal Echocardiography ◽  
Atrial Appendage ◽  
Size Determination ◽  
Ultrasound Contrast ◽  
Increased Risk

IntroductionInterventional closure of the left atrial appendage closure (LAAC) has been established as an alternative treatment in patients with atrial fibrillation (AF) and an increased risk of stroke. So far it is unknown whether the use of ultrasound contrast agent (UCA) would influence the correct sizing of the LAA and thereby have an impact on device selection during interventional LAAC.MethodsBetween January 2017 and April 2018, 223 transoesophageal echocardiography (TOE) examinations were prospectively performed in adult patients with non-valvular AF (Impact of the use of ultrasound contrast agent on the detection of thrombi in the left atrial appendage during transesophageal echocardiography (CONDOR) study). LAA was examined both with and without the use of UCA. The following measurements were taken at 0o, 45o, 90o and 135o: diameter of LAA ostium, maximal depth of the LAA, maximal available depth of the LAA orthogonal to the ostial plane and area of the LAA.ResultsThe use of UCA had no relevant influence on the size determination of the LAA. Additionally, Bland-Altman blots demonstrate a high degree of correlation between the measurements with and without UCA with no evidence for a systematic effect arising from the use of UCA. When comparing the measurements of two independent investigators, the use of UCA rather leads to a higher variability than to an improved precision.DiscussionDespite the fact that the use of UCA during TOE leads to an improved rule out of thrombi, our study shows that there is no advantageous effect of UCA on the size determination of the LAA and should therefore not be used for this purpose.

Analysis of haemodynamic changes related to hepatic cirrhosis by an ultrasound contrast agent

2001 ◽  
Vol 120 (5) ◽  
pp. A2-A2
Author(s):  
G FELICIANGELI ◽  
G ARGALIA ◽  
L BOLOGNINI ◽  
T ABBATTISTA ◽  
M URBANI ◽  
...  
Keyword(s):  
Contrast Agent ◽  
Hepatic Cirrhosis ◽  
Ultrasound Contrast Agent ◽  
Ultrasound Contrast ◽  
Haemodynamic Changes
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