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 'Color Doppler' 
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Result : Searchterm 'Color Doppler' found in 3 terms [] and 43 definitions [])
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Searchterm 'Color Doppler' was also found in the following services: 
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Color DopplerInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Doppler UltraSound -
 
(CD) Color Doppler is an ultrasound imaging mode, which visualizes the presence, direction and velocity of flowing blood in a wide range of flow conditions. It provides an estimate of the mean velocity of flow within a vessel by color coding the flow and displaying it superimposed on the 2D gray scale image. The flow direction is arbitrarily assigned the color red or blue, indicating flow toward or away from the transducer.
Color (colour, Brit.) Doppler ultrasound is capable of evaluating a wider area than other Doppler modes than for example Duplex or power Doppler, and therefore makes it less likely to miss flow abnormalities. It is also easier to interpret. Color flow is not as precise as conventional Doppler and is best used to scan a larger area and then use conventional Doppler for detailed analysis at a site of potential flow abnormality.

Adjustments for color Doppler in case of too much color:
point decreased color gain;
point increased color velocity scale;
point evaluation of chosen filter.

Adjustments for color Doppler in case of not enough color:
point increased color gain;
point decrease color velocity scale;
point adjust scanning plane and angle to flow;
point decrease sample box size;
point evaluation of chosen filter.
See also Color Power Doppler, Autocorrelation, Color Priority, Triplex Exam and Color Saturation.
Radiology-tip.comCerebral Blood Pool Imaging
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Radiology-tip.comBlood Flow Imaging,  Flow Effects
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• View the news results for 'Color Doppler' (2).


• Related Searches:
    • Color Doppler Imaging
    • Color Doppler Flow Imaging
    • Color Map
    • Flow
    • Contrast Enhanced Doppler Imaging

 Further Reading:
  Basics:
Doppler ultrasoundOpen this link in a new window
   by www.ob-ultrasound.net    
  News & More:
Mesenteric Ischemia: ImagingOpen this link in a new window
   by emedicine.medscape.com    
Placental insufficiency and fetal heart: Doppler ultrasonographic and biochemical markers of fetal cardiac dysfunctionOpen this link in a new window
   by herkules.oulu.fi    
US Resources  
DICOM - Pregnancy - Journals - Universities - Calculation - Thyroid
 
Color Doppler ImagingInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Modes -
 
(CDI) Color Doppler imaging depicts the mean frequency shifts of the Doppler signal. Color [colour, Brit.] Doppler imaging is a method for visualizing direction and velocity of movement, such as of blood flow within the cardiac chambers or blood vessels. The flow direction and velocity information gathered by Doppler ultrasonography is color coded onto a gray scale cross-sectional image. The sensitivity of Doppler ultrasound is increased in conjunction with the use of vascular contrast agents.
Direction and blood flow velocity are coded as colors and shades:
Red - flow coming nearer to the probe.
Blue - flow coming away of the probe.
See also Bi-directional Illumination, Color Map.
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• View the news results for 'Color Doppler Imaging' (1).



 Further Reading:
  News & More:
Success Rate of Transcranial Color-Coded Duplex Ultrasonography in Visualizing the Basal Cerebral Arteries in Vascular Patients Over 60 Years of AgeOpen this link in a new window
Thursday, 1 July 1999   by stroke.ahajournals.org    
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    
US Resources  
Resources pool - Services and Supplies - Safety - UltraSound Technician and Technologist Jobs - Image Libraries - Education
 
Color Doppler Flow ImagingInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Modes -
 
(CDFI) Color [colour, Brit.] Doppler flow imaging is a method based on pulsed ultrasound Doppler technology for visualizing direction and velocity of blood flow within the cardiac chambers or blood vessels.
See also Autocorrelation.
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Searchterm 'Color Doppler' was also found in the following services: 
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News  (8)  Resources  (13)  
 
AlbunexInfoSheet: - Contrast Agents - 
Intro, 
Historical Development, 
Microbubbles,
etc.MRI Resource Directory:<br> - Contrast Agents -
 
Albunex and Infoson, used mainly in cardiac evaluations, are first generation one-pass-only contrast agents and have been replaced by the new-generation contrast media. Albunex and Infoson are the same sonicated human serum albumin microbubbles. Infoson is licensed and manufactured in Europe, while Albunex was produced in the USA.
Albunex, an air-filled microbubble with a denatured albumin shell (modified from air-filled albumin microspheres prepared from sonicated 5% human serum albumin), was the first FDA-approved contrast agent, but is no longer in production.
Cardiac shunts and valve regurgitations are often evaluated with Color Doppler Imaging (CDI), which also improved with injections of Albunex, but this agent is pressure-sensitive and does not recirculate. It is effectively a one-pass-only agent, limiting its clinical efficacy.
See also First generation USCA, Echocardiography and Contrast Enhanced Ultrasound.
Drug Information and Specification:
DEVELOPER Mallinckrodt Inc.
INDICATION Contrast sonography and Doppler-echocardiography
APPLICATION Intravenous injection
TYPE Microbubble
SHELL - STABILIZATION Albumin
GAS Air
DO NOT RELY ON THE INFORMATION PROVIDED HERE, THEY ARE NOT A SUBSTITUTE FOR THE ACCOMPANYING PACKAGE INSERT!

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 Further Reading:
  News & More:
molecular imaging using ultrasoundOpen this link in a new window
   by bjr.birjournals.org    
Detecting and Imaging Microbubble contrast agents with ultrasoundOpen this link in a new window
2000   by www.collectionscanada.ca    
US Resources  
Education pool - 4d UltraSound - Musculoskeletal and Joint - Breast - Developers - Intravascular
 
Aliasing ArtifactInfoSheet: - Artifacts - 
Intro, 
Artifacts, 
ReductionMRI Resource Directory:<br> - Artifacts -
 
Echoes of deep lying structures within the body do not always come from the latest emitted sound pulse and can produce an aliasing artifact. Aliasing lowers the frequency components when the pulse repetition frequency is less than 2 times the highest frequency of a Doppler signal. This artifact can be problematical at Spectral or Color Doppler examinations.
Aliasing of the data displayed in pulsed wave technology is utilized as a benefit in determining transitions from laminar to turbulent flow.
See also Ultrasound Imaging Modes.
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US Resources  
Online Books - Equipment and Parts - PACS - Developers - Universities - Supplies and Accessories
 
Related Searches:
 • Color Doppler Imaging
 • Color Doppler Flow Imaging
 • Contrast Enhanced Doppler Imaging
 • Flow
 • Color Map
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