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DisplayMRI Resource Directory:<br> - UltraSound Physics -
 
The ultrasound display is usually a computer monitor that shows the processed data from the scanned area. Displays can be black-and-white or color, small or large depending upon the model and price of the ultrasound machine.
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    • Ultrasound Machine
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    • A-Mode
    • 3D Ultrasound
    • Far Field

 Further Reading:
  Basics:
Physics, instrumentation and basic technique.Open this link in a new window
   by dynamicultrasound.org    
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Radiology  (32) Open this link in a new windowMRI  (79) Open this link in a new window
2D-ModeInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Modes -
 
The 2D-mode (2-Dimensional-mode) is a spatially oriented B-mode (brightness) ultrasound. The imaged structures are displayed 2 dimensional as a function of depth and width. The brightness level is based on the echo signal amplitude.
Most of the ultrasound devices in medical imaging are 2D real-time scanner. The image is created by a rapidly back and forth swept sound beam over the region of interest.
See also Gray Scale.
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 Further Reading:
  Basics:
Basic ultrasound for cliniciansOpen this link in a new window
March 2006   by folk.ntnu.no    
  News & More:
Transmission Line Matrix (TLM) modelling of medical ultrasound(.pdf)Open this link in a new window
   by www.era.lib.ed.ac.uk    
US Resources  
Supplies and Accessories - Veterinary UltraSound - Thyroid - General - Preferential Sites - Gall Bladder
 
3D UltrasoundInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - 3d UltraSound -
 
In 3D ultrasound (US) several 2D images are acquired by moving the probe across the body surface or rotating inserted probes. 3D-mode uses the same basic concept of a 2D ultrasound but rather than take the image from a single angle, the sonographer takes a volume image. The volume image that is displayed on the screen is a software rendering of all of the detected soft-tissue combined by specialized computer software to form three-dimensional images.
The 3D volume rendering technique (VR) does not rely on segmentation (segmentation techniques are difficult to apply to ultrasound pictures) and makes it possible to obtain clear 3D ultrasound images for clinical diagnosis. A 3D ultrasound produces a still image. Diagnostic US systems with 3D display functions and linear array probes are mainly used for obstetric and abdominal applications. The combination of contrast agents, harmonic imaging and power Doppler greatly improves 3D US reconstructions.

3D imaging shows a better look at the organ being examined and is used for:
list_point Detection of abnormal fetus development, e.g. of the face and limbs.
list_point Visualization of e.g. the colon and rectum.
list_point Detection of cancerous and benign tumors, e.g. tumors of the prostate gland, and breast lesions.
list_point Pictures of blood flow in various organs or a fetus.
Fusion 3D imaging methods for generating compound images from two sets of ultrasound images (B-mode and Doppler images) enable the observation of the structural relationships between lesions and their associated blood vessels in three dimensions (maximum intensity projection).
Radiology-tip.comVirtual Colonoscopy
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Radiology-tip.comVolumetric Imaging
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• View the news results for '3D Ultrasound' (2).



 Further Reading:
  Basics:
Medical Physics: Ultrasound - extended reading exerciseOpen this link in a new window
   by www.cyberphysics.pwp.blueyonder.co.uk    
  News & More:
Ultrasound: Weighing the Propaganda Against the FactsOpen this link in a new window
   by www.midwiferytoday.com    
New technology makes 3-D imaging quicker, easierOpen this link in a new window
Sunday, 17 February 2008   by www.eurekalert.org    
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A-ModeInfoSheet: - Modes - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:<br> - Modes -
 
A-mode (Amplitude-mode) ultrasound is used to judge the depth of an organ, or otherwise assess an organ's dimensions. A-mode technology has been used in midline echoencephalography for rapid screening of intracranial mass lesions and ophthalmologic scanning. A-mode ultrasound imaging is now obsolete in medical imaging. The A-mode scan had also been used for early pregnancy assessment (detection of fetal heart beat), cephalometry and placental localization.
When the ultrasound beam encounters an anatomic boundary, the received sound impulse is processed to appear as a vertical reflection of a point. On the display, it looks like spikes of different heights (the amplitude). The intensity of the returning impulse determined the height of the vertical reflection and the time it took for the impulse to make the round trip would determine the space between verticals. The distance between these spikes can be measured accurately by dividing the speed of sound in tissue (1540 m/sec) by half the sound travel time.
To make an echoencephalography scan, the first A-mode scan is obtained from the right side of the head and the image captured on film. Then the probe is placed at the corresponding point on the left side. The second exposure is made on the same film with inverted spikes. The A-mode ultrasound could be used to identify structures normally located in the midline of the brain such as the third ventricle and falx cerebri. The midline structures would be aligned in normal patients but show displacement in patients with mass lesion such as a subdural, epidural, or intracranial hemorrhage.
See also Ultrasound Biomicroscopy, A-scan, B-mode and the Infosheet about ultrasound modes.
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• View the news results for 'A-Mode' (1).



 Further Reading:
  Basics:
A-Mode EchoencephalographyOpen this link in a new window
   by www.obgyn.net    
A-Mode Area RatioOpen this link in a new window
   by www.wildultrasound.com    
  News & More:
Module 1: Basic A-scan Biometry Section 1: Basic ConceptsOpen this link in a new window
   by www.eyetec.net    
Searchterm 'Display' was also found in the following service: 
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Radiology  (32) Open this link in a new windowMRI  (79) Open this link in a new window
ACUSON Aspen™ GIInfoSheet: - Devices -
Intro, 
TypesMRI Resource Directory:<br> - Devices Machines Scanners Systems -
 
www.medical.siemens.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10001&langId=-11&catalogId=-11&catTree=100001%2C12805%2C12761&level=0&productId=17969

From Siemens Medical Systems;
The ACUSON Aspen&trade; ultrasound system resulted from a unique convergence of select ACUSON Sequoia&trade; ultrasound system technologies and other ACUSON innovations to form an entirely new imaging platform. Its new digital system architecture provides complete digital control of the ultrasound echoes from the transducer through the captured digital examination.

Specifications for this system will be available soon.

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 Further Reading:
  Basics:
Product Information ACUSON Aspen GI(.pdf)Open this link in a new window
US Resources  
Equipment and Parts - Carotid - UltraSound Training Courses - Calculation - Quality Advice - Hospitals
 
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