UltraSound - Technology Information PortalTuesday, 21 February 2017
Info
  Sheets



Out-
      side
 




 
 'transducer' 
SEARCH FOR   
 
  12345ABCDEFGHIJKLMNOPQRSTUVWZ
Result : Searchterm 'transducer' found in 13 terms [] and 169 definitions [])
previous     61 - 65 (of 182)     next
Result Pages : [1 2 3]  [4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ... ]
Searchterm 'transducer' was also found in the following services: 
spacer
News  (31)  Resources  (15)  Forum  (5)  
 
DampingMRI Resource Directory:<br> - UltraSound Physics -
 
Damping is a process, material, design, and mounting technique used to reduce the pulse duration or ringing of the transducer. Special material is applied to the back of the transducer in order to reduce the amplitude and pulse length of the sound wave.
Damping improves axial resolution by reducing pulse length. Thereby the lateral resolution increases.
spacer
• Related Searches:
    • Hemoglobin
    • Reject
    • Cross-section Scattering
    • Amplitude
    • Specular Echo

 Further Reading:
  News & More:
Ultrasound and k-space K-space transforms of elementary geometriesOpen this link in a new window
   by dukemil.egr.duke.edu    
US Resources  
Online Books - Rental - Thyroid - Societies - UltraSound Technician and Technologist Jobs - Kidney
 
Dead ZoneMRI Resource Directory:<br> - UltraSound Physics -
 
The dead or ring down zone is the distance from the front face of the transducer to the first echo that is identifiable. The signals from this region are unsuitable. The dead zone is the result of transducer ringing and reverberations from the interface between the transducer and the scanned object. Impedance matching between the transducer and the receiver is important to avoid electrical ringing.
With an increase of the frequency, the pulse length and the depth of the dead zone decrease, if all other parameters remain constant. The acoustic power also affects the depth of the dead zone.
spacer

 Further Reading:
  News & More:
Real-time B-mode ultrasound quality control test procedures a Report of AAPM Ultrasound Task Group No. 1Open this link in a new window
   by www.aapm.org    
US Resources  
Examinations - Fetal - UltraSound Reimbursement - Used and Refurbished UltraSound Equipment - Developers - UltraSound Physics
 
Digital to Analog ConverterMRI Resource Directory:<br> - Equipment and Parts -
 
(DAC) Part of the interface that converts digital numbers from the computer into analog (ordinary) voltages or currents. In ultrasound systems e.g., the high voltage transmit amplifiers that drive the transducers might be controlled by digital to analog converters (DACs) to shape the transmit pulses for better energy delivery to the transducer elements.
spacer

 Further Reading:
  Basics:
Defining and Testing Dynamic Parameters in High-Speed ADCs, Part 1Open this link in a new window
Tuesday, 13 February 2001   by www.maxim-ic.com    
Searchterm 'transducer' was also found in the following services: 
spacer
News  (31)  Resources  (15)  Forum  (5)  
 
Directional IndicatorsMRI Resource Directory:<br> - UltraSound Physics -
 
Color assignments can be switched on any ultrasound system and are used as directional indicators. The colors of red and blue indicates flow direction in color Doppler.
Red is encoded to represent flows toward the transducer.
Blue pixel encoding is used to depict flows away from the transducer.
See also Directional Color Power Doppler.
spacer

US Resources  
General - Thyroid - Musculoskeletal and Joint - Supplies and Accessories - Education pool - Databases
 
Directivity IndexMRI Resource Directory:<br> - UltraSound Physics -
 
(DI) The directivity index is the value in dB of ten times the common logarithm of the directivity factor. The directivity factor is the ratio of the sound intensity produced by a test transducer on a specific axis to that of a point source that is emitting the same acoustic power. Since the specific axis is usually one of maximum radiation, the directivity index is usually greater than zero.
See also dB/dt.
spacer

US Resources  
Manufacturers - Carotid - Non-English - PACS - - UltraSound Technician and Technologist Career
 
Related Searches:
 • Temporal Peak Intensity
 • Spatial Average Intensity
 • Reject
 • Hyperechoic
 • Hemoglobin
SEARCH FOR   
 
  12345ABCDEFGHIJKLMNOPQRSTUVWZ
previous      61 - 65 (of 182)     next
Result Pages : [1 2 3]  [4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ... ]
 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 • The-Medical-Market
Copyright © 2006 - 2016 SoftWays. All rights reserved.
Terms of Use | Privacy Policy | Advertising
 [last update: 2015-03-04 09:17:02]