Tag Archives: Ultrasound

PhotoAcoustic Imaging

PhotoAcoustic imaging is an imaging modality that uses laser light and ultrasound detectors to image tissues. Photo = Light. Acoustic = Sound. The imaging uses the photoacoustic effect principle. The photoacoustic effect is not new in terms of discovery as it was reported by none other than Alexander Graham Bell (yes! Rings a bell doesn’t it?) as early as 1880. But, the unavailability of proper detectors and instruments at his time was an obstacle to expanding research in this field.


Biomedical Sales & Service Engineer Job in Chennai



Scan Ray Solutions, We are leading service provider for any brand of ULTRSOUND SCANNERS AND DOPPLERS. We are identified in biomedical market as prompt, reliable, quality service provider for all major brands of ultrasound machines ..
We are specialized in service of Electronic probes and mechanical probes.

Types of repair we do….

V Probe layering for air gap problem

V Air bubble removal.

V Probe layer peeling off.

V Crystal head replacement.

V Crystal replacement.

V Refurbish your old probes

Biomedical Innovation: Ultrasound used for better Brain Computer Interface


Photo: Pierre Duez

Ultrasound is good for more than monitoring fetuses and identifying heart defects. According to engineers in Canada, it can help tell what people are thinking as well. Their research suggests that ultrasound-based devices could lead to a new kind of brain-computer interface.

Brain-computer interface technology allows users to control devices with brain activity alone. Researchers have focused primarily on clinical applications for people with severe disabilities who would otherwise have difficulty interacting with the outside world.

Do your PhD in Biomedical Engineering from Ghent University

Job Description

The bioMMeda (biofluid, tissue and solid mechanics for medical applications) research unit of Ghent University’s Institute Biomedical Technology (IBiTech) has a vacant PhD-position in the field of ultrasonic imaging development for improved arterial tissue characterization. Non-invasive measurement of arterial stiffness is nowadays considered as an important part of cardiovascular risk assessment. Ultrasound is potentially useful for this application but unfortunately still shows limitations regarding resolution and sensitivity. The aim of the PhD-project therefore is to improve current ultrasonic image formation and signal processing to develop a robust ultrasonic estimator of arterial stiffness. As such, knowledge on signal processing, ultrasound physics/acoustics is considered an advantage.

Basic & Detailed Tutorial on Ultrasound Imaging & Endoscopy for Biomedical Beginners

Echocardiography, Sonography, Ultrasonography,...
Image via Wikipedia

A commonly used, and relatively inexpensive, imaging technology depends on acoustic or ultrasonic waves sent into the body where they are both refracted and reflected (this is an example of medical remote sensing that does not draw upon EM radiation). The result is a sonogram or echogram which to the layman appears fuzzy and limited in definition but is informative to the physician and trained technicians. A transducer that both generates acoustic waves and receives their reflections (echos) can be placed directly near the specific organ being investigated. The acoustic signal that passes through the body is between 1 and 10 MHz (3.5 to 7.0 MHz most frequently used). A brief summary of Ultrasonic imaging is found at the HowStuffWorks site. Once there additional information can be sought by clicking on “Lots More Information” and then on “Basic Concepts of Ultrasound” that gets you to “Diagnostic Ultrasound” by Beverly Stern of Yale University (putting on a direct link on this page fails to work). Both the text and the references on the HowStuffWorks site touch upon Doppler sonography and 3-D sonography.