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SonographyMRI Resource Directory:<br> - Patient Information -
 
Medical Sonography (also called ultrasonography) uses equipment that generates high frequency sound waves to produce images from muscles, soft tissues, fluid collections, and vascular structures of the human body. Obstetric sonography is commonly used during pregnancy. Sonography visualizes anatomy, function, and pathology of for example gallbladder, kidneys, pancreas, spleen, liver, uterus, ovaries, urinary bladder, eye, thyroid, breast, aorta, veins and arteries in the extremities, carotid arteries in the neck, as well as the heart.
A typical medical ultrasound machine, usually a real-time scanner, operates in the frequency range of 2 to 13 megahertz.
See also Musculoskeletal and Joint Ultrasound, Pediatric Ultrasound, Cerebrovascular Ultrasonography and Contrast Enhanced Ultrasound.
Radiology-tip.comTomography
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Radiology-tip.comMRI Scan
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• View the news results for 'Sonography' (4).


• Related Searches:
    • Ultrasound Imaging Procedures
    • Ultrasound Safety
    • Ultrasound Therapy
    • Medical Imaging
    • Ultrasound Regulations

 Further Reading:
  Basics:
UltrasoundOpen this link in a new window
Thursday, 20 October 2005   by en.wikipedia.org    
  News & More:
ultrasound of blighted ovumOpen this link in a new window
   by rad.usuhs.mil    
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UltrasonographyMRI Resource Directory:<br> - Patient Information -
 
Also called sonogram, sonography, ultrasound imaging.
Ultrasonography uses the reflections of high-frequency sound waves to construct an image of a body organ. These ultrasonic waves are generated by a quartz crystal and are reflected at the interface between different tissues. The transmission and reflection of these high-frequency waves are displayed with different types of ultrasound modes.
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• View the news results for 'Ultrasonography' (1).



 Further Reading:
  Basics:
An Introduction to UltrasoundOpen this link in a new window
   by www.cis.rit.edu    
  News & More:
Bedside Limited Echocardiography by the Emergency Physician Is Accurate During Evaluation of the Critically Ill PatientOpen this link in a new window
2004   by www.ncbi.nlm.nih.gov    
Ultrasonographic fata morganaOpen this link in a new window
2003   by ndt.oxfordjournals.org    
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 - UltraSound Reimbursement - Devices Machines Scanners Systems - Image Quality - Carotid - Renal
 
Liver SonographyMRI Resource Directory:<br> - Liver -
 
A liver sonography is a diagnostic tool to image the liver and adjoining upper abdominal organs such as the gallbladder, spleen, and pancreas. Deeper structures such as liver and pancreas are imaged at a lower frequency 1-6 MHz with lower axial and lateral resolution but greater penetration. The diagnostic capabilities in this area can be limited by gas in the bowel scattering the sound waves.
The application of microbubbles may be useful for detection of liver lesions and for lesion characterization. Some microbubbles have a liver-specific post vascular phase where they appear to be taken up by the reticuloendothelial system (RES). Dynamic contrast enhanced scans in a similar way as with CT or MRI can be used to studying the arterial, venous and tissue phase.
After a bolus injection, early vascular enhancement is seen at around 30sec in arterialized lesions (e.g., hepatocellular carcinomas (HCC), focal nodular hyperplasia (FNH)). Later enhancement is typical of hemangiomas with gradually filling towards the center. In the late phase at around 90sec, HCCs appear as defects against the liver background. Most metastases are relatively hypovascular and so do not show much enhancement and are seen as signal voids in the different phases.
Either with an intermittent imaging technique or by continuous scanning in a nondestructive, low power mode, characteristic time patterns can be used to differentiate lesions.
See also Medical Imaging, B-Mode, High Intensity Focused Ultrasound, Ultrasound Safety and Contrast Medium.
Radiology-tip.comAbdomen CT
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Radiology-tip.comLiver Imaging
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 Further Reading:
  Basics:
Optimizing Doppler and Color Flow US: Application to Hepatic Sonography(.pdf)Open this link in a new window
   by radiographics.rsna.org    
Cirrhosis, Ultrasound findingsOpen this link in a new window
   by rad.usuhs.mil    
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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    
Noninvasive ways to assess liver diseaseOpen this link in a new window
Friday, 1 February 2008   by www.eurekalert.org    
High-energy Ultrasound Sharpens View Of Liver TumorsOpen this link in a new window
Friday, 11 January 2008   by www.sciencedaily.com    
Searchterm 'Sonography' was also found in the following services: 
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Reflux SonographyMRI Resource Directory:<br> - Renal -
 
Reflux sonography, as an alternative to micturating cystography (MCU), evaluates vesico-ureteral reflux (VUR), a common problem in children. Contrast enhanced pulse-inversion imaging shows best results. During the instillation of an ultrasound contrast agent into the bladder, (as for a conventional MCU) the lower ureters and renal pelves are scanned transabdominally as the bladder is filled to stimulate micturition.
Advantages for reflux sonography are a high sensitivity and the avoidance of X-rays. A disadvantage is the poorer depiction of the posterior urethra. However, for girls and for all follow-up studies, the ultrasound MCU has become standard in many pediatric ultrasound departments.
See also Urologic Ultrasound, Kidney Ultrasound, Ultrasound Safety, Ultrasound Imaging Modes.
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 Further Reading:
  Basics:
Guidelines and Good Clinical Practice Recommendations for Contrast Enhanced Ultrasound (CEUS) Update 2008(.pdf)Open this link in a new window
2008   by www.efsumb.org    
Searchterm 'Sonography' was also found in the following service: 
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Transrectal SonographyMRI Resource Directory:<br> - Pelvic -
 
(TRUS) Transrectal sonography (also called transrectal ultrasonography, transrectal echography (TRE), endorectal ultrasound (ERUS or EUS)) is an ultrasound procedure used to examine the prostate gland, the rectum or bladder.
A small, lubricated transducer placed into the rectum releases sound waves, which create echoes as they enter the region of interest. A computer creates a picture called a sonogram.
TRUS is commonly used for guidance during a prostate needle biopsy and may be used to deliver brachytherapy and monitor cancer treatment. Transrectal ultrasonography detects enlargement, tumors and other abnormalities of the prostate, rectal polyps, rectal cancer, perianal infection, and sphincter muscle injuries. TRUS is also performed on male patients with infertility to view the prostate and surrounding structures and on patients with suspected bladder conditions or disease to view the bladder.
See also Transurethral Sonography, Endoscopic Ultrasound, Pelvic Ultrasound, Rectal Probe, Biplane Probe, Endocavitary Echography and High Intensity Focused Ultrasound.
Radiology-tip.comColonoscopy
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Radiology-tip.comGastrointestinal Imaging
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 Further Reading:
  Basics:
TRANSRECTAL ULTRASOUND (TRUS) GUIDED BIOPSY OF THE PROSTATE(.pdf)Open this link in a new window
   by urology.ucsf.edu    
  News & More:
Sonography Transmission Gel as Endorectal Contrast Agent for Tumor Visualization in Rectal CancerOpen this link in a new window
Monday, 14 January 2008   by www.ajronline.org    
US Resources  
Non-English - Services and Supplies - Pregnancy - Contrast Agents - Societies - Service and Repair
 
Related Searches:
 • Ultrasound Regulations
 • Ultrasound Picture
 • Medical Imaging
 • Ultrasound Therapy
 • Ultrasound Imaging Procedures
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