UltraSound - Technology Information PortalFriday, 18 January 2019
Info
  Sheets



Out-
      side
 




 
 'Contrast Enhanced Doppler Imaging' 
SEARCH FOR   
 
  12345ABCDEFGHIJKLMNOPQRSTUVWZ
Result : Searchterm 'Contrast Enhanced Doppler Imaging' found in 1 term [] and 5 definitions [], (+ 9 Boolean[] results)
1 - 5 (of 15)     next
Result Pages : [1]  [2]  [3]
US Resources  
Equipment and Parts - Breast - Developers - Education - Image Libraries - UltraSound Training Courses
 
Contrast Enhanced Doppler ImagingInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Doppler UltraSound -
 
Contrast agents improve the sensitivity of vascular Doppler ultrasound, for example in cerebrovascular sonography or examinations of deep abdominal vessels. They also enlarge the role of transcranial Doppler. Microbubbles can be used with various modes e.g., color and power Doppler imaging, as well as pulsed-wave Doppler to increase the signal intensity. However, the ultrasound system must be suitable for contrast enhanced technology.
Microbubbles usually stay within the vascular space; nevertheless, the contrast enhancement is limited to 2–6 minutes caused by physiologic clearance and bubble destruction.
Depended on the application, contrast agents can be administered with a different injection rate e.g., bolus injection, slow injection, or continuous infusion. Stable, homogeneous, and prolonged enhancement can be obtained with perfusion, lasting until the infusion is stopped.
See also Cerebrovascular Ultrasonography, Multiple Frame Trigger.
spacer
• Related Searches:
    • Veterinary Ultrasound
    • Element
    • Transcranial Doppler
    • Kelvin
    • Chison 500VET

 Further Reading:
  Basics:
Continuous Infusion Versus Bolus Injection Of Ultrasound Contrast Agents in Vascular Doppler Flow Imaging Response(.pdf)Open this link in a new window
Friday, 1 September 2000   by stroke.ahajournals.org    
  News & More:
Carotid artery color doppler ultrasound: 80-90% stenosis of the proximal internal carotid artery secondary to large atherosclerotic plaquesOpen this link in a new window
   by rad.usuhs.mil    
US Resources  
Societies - Universities - Artifacts - Thyroid - Resources - Obstetric
 
Contrast Enhanced UltrasoundInfoSheet: - Contrast Agents - 
Intro, 
Historical Development, 
Microbubbles,
etc.MRI Resource Directory:<br> - Vascular -
 
(CEUS) Contrast agents increase the reflection of ultrasonic energy, improve the signal to noise ratio and caused by that the detection of abnormal microvascular and macrovascular disorders. Contrast enhanced ultrasound is used in abdominal ultrasound (liver sonography) as well as in cerebrovascular examinations e.g., for an accurate grading of carotid stenosis. The used contrast agents are safe and well tolerated.

The quality of the enhancement depends on:
point the concentration of the contrast agent;
point the type of injection, flow rate;
point the patient characteristics;
point the microbubble quality and properties of the filling gas and the shell.
The additional use of ultrasound contrast agents (USCAs) may overcome typical limitations like poor contrast of B-mode imaging or limited sensitivity of Doppler techniques. The development of new ultrasound applications (e.g., blood flow imaging, perfusion quantification) depends also from the development of pulse sequences for bubble specific imaging. In addition, contrast enhanced ultrasound improves the monitoring of ultrasound guided interventions like RF thermal ablation.
See also Contrast Enhanced Doppler Imaging, Contrast Harmonic Imaging, Contrast Imaging Techniques and Contrast Pulse Sequencing.
Radiology-tip.comContrast Enhanced Computed Tomography
spacer
Radiology-tip.comContrast Enhanced MRI
spacer

• View the news results for 'Contrast Enhanced Ultrasound' (1).



 Further Reading:
  Basics:
Guidelines and Good Clinical Practice Recommendations for Contrast Enhanced Ultrasound (CEUS)Open this link in a new window
2008   by www.efsumb.org    
  News & More:
Role of ultrasound and contrast-enhanced ultrasound in patients with cerebrovascular disease(.pdf)Open this link in a new window
Friday, 1 March 2002   by eurheartjsupp.oupjournals.org    
The clinical applications of contrast echocardiography(.pdf)Open this link in a new window
2000   by cme.medscape.com     
US Resources  
Ultrasound Therapy - Services and Supplies - UltraSound Technician and Technologist Career - Intravascular - Carotid - Calculation
 
Contrast Imaging TechniquesInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Modes -
 
Many different contrast imaging techniques have been developed. Most are either variations, hybrids, or combinations of the following ultrasound techniques:
point contrast enhanced Doppler imaging;
point contrast harmonic imaging;
point intermittent imaging.
See also Coherent Contrast Imaging, Ultrasound Picture and Targeted Contrast Imaging.
spacer

 Further Reading:
  Basics:
Combination of contrast with stress echocardiography: A practical guide to methods and interpretationOpen this link in a new window
2004   by www.cardiovascularultrasound.com    
US Resources  
Calculation - Safety - Image Libraries - Distributors - Non-English - Services and Supplies
 
Doppler UltrasoundInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Modes -
 
Doppler ultrasound is a medical imaging technique for calculating the relative velocity between two points by measuring the frequency shift of a sound wave transmitted from one point to the other, based on the Doppler effect. Continuous or pulsed Doppler is frequently used to examine cardiovascular blood flow. The combination of routine 2D-mode and Doppler ultrasound allows a complete evaluation of the heart's anatomy and function (including the fetal heart). See also Doppler Fluximetry in Pregnancy.
Doppler ultrasound depends on the fact that if a moving object reflects the ultrasound waves, the echo frequencies are changed. A higher frequency is created if the object is moving toward the probe//transducer and a lower frequency if it is moving away from it. How much the frequency is changed depends upon how fast the object is moving. Doppler ultrasound shows the different rates of blood flow in different colors on a monitor in real time.
The major Doppler parameters are the peak systolic velocity and the end-diastolic velocity. The peak systolic velocity ratio compensates the variability between different patients and instrumentations.

Different Doppler and duplex techniques:
list_point color Doppler;
list_point color power Doppler;
list_point continuous wave Doppler;
list_point contrast enhanced Doppler imaging;
list_point directional color power Doppler;
list_point duplex;
list_point harmonic power Doppler;
list_point pulse inversion Doppler;
list_point pulsed wave Doppler;
list_point spectral Doppler;
list_point transcranial Doppler.
spacer

• View the news results for 'Doppler Ultrasound' (4).



 Further Reading:
  Basics:
Noninvasive Evaluation of Peripheral Arterial DiseaseOpen this link in a new window
   by ej.rsna.org    
  News & More:
Principles in Doppler EchocardiographyOpen this link in a new window
   by www.echoincontext.com    
Evaluation of lower extremity bypass grafts with use of color duplex sonographyOpen this link in a new window
Thursday, 30 June 2005   by radiographics.rsna.org    
Carotid artery color doppler ultrasound: 80-90% stenosis of the proximal internal carotid artery secondary to large atherosclerotic plaquesOpen this link in a new window
   by rad.usuhs.mil    
US Resources  
Databases - UltraSound Technician and Technologist Career - Patient Information - Image Quality - Supplies and Accessories - UltraSound Training Courses
 
Multiple Frame TriggerInfoSheet: - Artifacts - 
Intro, 
Artifacts, 
ReductionMRI Resource Directory:<br> - Artifacts -
 
The multiple frame trigger adjusts the acquisition of a series of consecutive frames, usually with ECG triggering. Multiple frame triggers are used in harmonic power Doppler modes to identify motion artifacts in contrast enhanced Doppler imaging.
spacer

US Resources  
Artifacts - 3d UltraSound - Vaginal - General - Corporations - Safety
 
Related Searches:
 • Annular Array
 • Vivid 7 Dimension
 • SonoSite, Inc.
 • Rectal Probe
 • BladderScan® BVI 6300
SEARCH FOR   
 
  12345ABCDEFGHIJKLMNOPQRSTUVWZ
     1 - 5 (of 15)     next
Result Pages : [1]  [2]  [3]
 Random Page
 
Share This Page
FacebookTwitterLinkedIn

US-TIP    
Community   
User
Pass
Forgot your UserID/Password ?  


Look
      Ups



UltraSound - Technology Information Portal
Member of SoftWays' Medical Imaging Group - MR-TIP • Radiology-TIP • US-TIP • 
Copyright © 2006 - 2018 SoftWays. All rights reserved.
Terms of Use | Privacy Policy | Advertising
 [last update: 2015-03-04 09:17:02]