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Radiology Database Open this link in a new window Magnetic Resonance Imaging Database Open this link in a new window
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US Resources  
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E-Z-EM, Inc.MRI Resource Directory:
 - Manufacturers -
 
www.ezem.com

E-Z-EM, Inc. is headquartered in New York and develops, manufactures and markets diagnostic imaging products used by radiologists like the MRI bowel marker GadoliteŽ Oral Suspension.
In addition to medical diagnostics systems, the company's products include interventional devices, such as biopsy needles. E-Z-EM is also a third-party contract manufacturer of contrast media.

Contact Information:
MAIL E-Z-EM, Inc.
Westbury, New York
USA
PHONE +1-800-544-4624
ONLINE www.ezem.com
CONTACT INFO PAGE http://www.ezem.com/contact
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EchoMRI Resource Directory:
 - UltraSound Physics -
 
The echo is the part of the transmitted ultrasound that is reflected back to the receiving transducer crystal.
See also Sonographic Features.
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• View the NEWS results for 'Echo' (8).Open this link in a new window.

• View the DATABASE results for 'Echo' (158).Open this link in a new window.

US Resources  
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Echo LocationMRI Resource Directory:
 - UltraSound Physics -
 
The echo location is the location of a target relative to the sensor face. The echo is located by measuring the time that it takes for a sound wave to travel to the target and be reflected back to the sensor.
See also Time of Flight.
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• View the DATABASE results for 'Echo Location' (3).Open this link in a new window.

Echo RangingMRI Resource Directory:
 - UltraSound Physics -
 
Echo ranging is the ultrasound relationship between transit time and reflector depth expressed as:
t = 2d//c
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• View the DATABASE results for 'Echo Ranging' (3).Open this link in a new window.

EchocardiographyMRI Resource Directory:
 - Cardiac -
 
Echocardiography is the ultrasound examination of the heart. Depending on the used ultrasound system, echocardiograms can be two-dimensional slices or 3D real-time images of the heart. Based on the ultrasound principles the direction and speed of blood flow can be utilized e.g., to diagnose a leaking or stenosed valve or to identify intracardiac shunts.

Different types of echocardiography:
point transthoracic echocardiography (TTE);
point transesophageal echocardiography (TEE);
point contrast echocardiogram (CE);
point stress echocardiogram.

The transthoracic echocardiogram (images are taken through the chest wall) is a non-invasive, highly accurate and quick assessment of the overall health of the heart.
A more invasive method is to insert a specialized scope containing an echocardiography transducer (TEE probe) into the esophagus, and record images from there. The advantages are clearer images, since the transducer is closer to the heart.
Contrast echocardiogram (CE) is already a valuable tool to delineate endocardial borders, direct invasive procedures, detect intracardiac shunts, assess myocardial perfusion and viability, and quantify coronary flow reserve and blood volumes (see also hemoglobin). The mechanism of microbubble CE is based on the physical principles of rarefaction and compression, leading to volume pulsations of microbubbles, and it is this change that results in CE signal.
Stress echocardiograms are echocardiography exams used for detection of coronary artery disease.
See also Diastole, Bicycle Stress Echocardiography, Resistive Index, and M-Mode Echocardiography.
Radiology-tip.comHeart Scintigraphy
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Radiology-tip.comCardiovascular Imaging
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• View the NEWS results for 'Echocardiography' (6).Open this link in a new window.

• View the DATABASE results for 'Echocardiography' (36).Open this link in a new window.

 Further Reading:
  Basics:
The First Long-Lasting Use of Echocardiography: A Result of a False AdvertisementOpen this link in a new window
2008   by imaging.onlinejacc.org    
AMERICAN SOCIETY OF ECHOCARDIOGRAPHY - RECOMMENDATIONS FOR A STANDARDIZED REPORT FOR ADULT TRANSTHORACIC ECHOCARDIOGRAPHYOpen this link in a new window
   by www.ncbi.nlm.nih.gov    
Amer ican Society of Echocardiography - Recommendations for Quantification of Doppler Echocardiography(.pdf)Open this link in a new window
   by www.asecho.org    
Principles in Doppler EchocardiographyOpen this link in a new window
   by www.echoincontext.com    
American Society of Echocardiography Recommendations for Use of Echocardiography in Clinical TrialsOpen this link in a new window
October 2004   by www.asefiles.org    
Recommendations for Evaluation of the Severity of Native Valvular Regurgitation with Two-dimensional and Doppler Echocardiography(.pdf)Open this link in a new window
July 2003   by www.asefiles.org    
ACC/AHA Guidelines for the Clinical Application of EchocardiographyOpen this link in a new window
   by circ.ahajournals.org    
  News & More:
The clinical applications of contrast echocardiography(.pdf)Open this link in a new window
2000   by cme.medscape.com     
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