Navigation Links
A probe, not an echo

the key features distinguishing HUTT from all previous ultrasound imaging systems is the use of multi-band analysis with sub-millimeter ultrasonic transducers in transmission mode, rather than the commonly used echo mode, to create the 3-D image.

He explains that in traditional hand-held ultrasound systems, sound waves are broadcast into the tissue, and the echoes produce an image of the reflecting interfaces ?that is, the sound transmitter and the receiver are both on the same side of the sample.

However, only a tiny fraction of the transmitted sound comes back as echo on soft tissues, while a much larger fraction (about 2000 times bigger) is transmitted through the soft tissue.

Using the sound transmitted through tissue allows the formation of better images with greater clarity and resolution.

A hand-held apparatus cannot objectively locate objects in 3D space (in a fixed-coordinate system), but only allows the user to subjectively observe where an object is in relation to other observable structures. Therefore, it is operator-dependent.

The HUTT system transmits an extremely short ultrasonic pulse (about 250 nanosecond) of 4-12 megahertz frequency (far above human hearing) and picks up the pulse on the other side after it has traveled through the imaged object.

The transmitted pulses come from an array of very small ultrasonic transducers of sub-millimeter dimensions. A parallel array of transducers on the other side receives the pulses after they travel through the imaged tissue.

A sophisticated coding/decoding signal scheme recognizes a small "sweet spot" of the signal coming from the opposite transducer, and only that transducer, and ignores all other pulses transmitted by neighboring transducers.

The transducer is able to distinguish the right signal from the right transducer by using coding that is almost identical to that used by a cell phone to detect signals sent to its number -- and its num
'"/>

Source:University of Southern California


Page: 1 2 3 4

Related biology news :

1. UCLA launches $20 million stem cell institute to investigate HIV, cancer and neurological disorders
2. UNC launches study of liver injury caused by drugs
3. NIEHS launches website with information for assessing environmental hazards from Hurricane Katrina
4. NIH launches comprehensive effort to explore cancer genomics
5. Virginia Bioinformatics Institutes launches microbial database
6. BioMed Central launches Biology Direct
7. Protein structure initiative launches new resources for the scientific community
8. NIH neuroscience microarray consortium launches high-throughput genotyping services
9. UW launches study testing adult stem cells for heart damage repair
10. ESA launches new project to protect biodiversity
11. Africas first large-scale HIV vaccine study launches
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: probe not echo

(Date:4/23/2014)... Putnam Valley, NY. (Apr. 23 2014) ... human neural stem cells (hNSCs) into the brains ... differentiation after 22 and 24 months found that ... months and did not cause tumors. , The ... of Cell Transplantation but is currently ...
(Date:4/23/2014)... trope that the likelihood of an accurate group decision ... hold up when a collective faces a variety of ... Instead, Princeton University researchers report that smaller groups actually ... may become excessively focused on only certain pieces of ... what is known about collective intelligence, or the "wisdom ...
(Date:4/23/2014)... a signing ceremony in Buenos Aires yesterday, Argentina ... an associate member state. The move strengthens the ... science communities. It grants Argentinian scientists access to ... beneficial collaborations. , "Ever since its inception, fostering ... have been at the core of EMBL,s mission," ...
Breaking Biology News(10 mins):Study finds long-term survival of human neural stem cells transplanted into primate brain 2Too many chefs: Smaller groups exhibit more accurate decision-making 2Too many chefs: Smaller groups exhibit more accurate decision-making 3
... OTO EXPO of the American Academy of Otolaryngology Head ... nose, and throat doctors in the world, will convene September ... scientific research sessions, 594 posters, and several hundred instruction course ... for journalists from around the world to cover breaking science ...
... 2010 - Eurofins MWG Operon, an expert in next generation ... GS Junior. The GS Junior is the optimum system for ... one eighth of the capacity of a GS FLX Titanium ... run. As a consequence, the GS Junior adds a higher ...
... This release is available in French ... high electrical conductivity that promise to revolutionize a wide range ... A team of McGill University researchers have now reported ... along one single conductive polymer molecule at a time, a ...
Cached Biology News:2010 AAO-HNSF miniseminars: Tuesday, Sept. 28, 2010 22010 AAO-HNSF miniseminars: Tuesday, Sept. 28, 2010 3Striding towards a new dawn for electronics 2
(Date:1/14/2014)... BETHESDA, Md. , Jan. 14, 2014  Organovo ... institutes from the National Institutes of Health (NIH) to ... more effective treatments to patients on a faster timeline. ... Translational Sciences (NCATS) and the National Eye Institute (NEI) ...
(Date:1/14/2014)... In recent years, growing suspicion about the pharmaceutical ... and promotion has led to unprecedented levels of public ... about the insidious impact of commercialization of research, has ... the world’s biggest pharmas for illegal marketing activities, allegations ...
(Date:1/14/2014)... 2014 Global Record Systems, LLC, ... technology solutions for patients, physicians, the biopharmaceutical industry, ... today the signing of a three-year Research Collaboration ... Administration (FDA). This initiative is designed to ...
(Date:1/14/2014)... and Cardiff, UK (PRWEB) January 13, 2014 ... development leader with more than 20 years in the ... optics and photonics . Hainsey will serve as the ... to have Dr. Hainsey join SPIE as our Technology ...
Breaking Biology Technology:Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Global Record Systems Announces Research Collaboration Agreement with FDA to Create a Novel “Big Data” Paradigm for Collection of Patient Safety and Outcomes Information 2Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2
... Solutions, LLC, Santa Clara, CA, a manufacturer of ... applications, announced the release of TruTorr(TM), a single-use ... containers, in order to prevent overpressure damage, at ... TruTorr system consists of a disposable pressure sensor, ...
... option for millions of Americans with debilitating lung ... (NYSE: AZN ) today announced that ... approved SYMBICORT (budesonide/formoterol fumarate dihydrate) 160/4.5 mcg for ... in patients with chronic obstructive pulmonary disease (COPD), ...
... Is Just What Diabetics Have Been Waiting For. The Sleek, Bold ... By Storm. , ... Greenville, SC (PRWEB) February 27, 2009 -- For ... that is both functional and attractive. In recent years, many companies ...
Cached Biology Technology:Finesse Announces TruTorr(TM) Single-Use Pressure Sensor 2FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 2FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 3FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 4FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 5FDA Approves SYMBICORT(R) for Chronic Obstructive Pulmonary Disease (COPD) 6Home Delivery Medical Offers New Glucose Meter With State-Of-The-Art Technology 2Home Delivery Medical Offers New Glucose Meter With State-Of-The-Art Technology 3