Ultrasound is a sound wave with frequencies higher than the upper audible limit of human hearing. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz. Medical Sonography (Ultrasonography) is an ultrasound-based diagnostic medical imaging technique used to visualize muscles, tendons, and many internal organs, to capture their size, structure and any pathological lesions with real time tomographic images. Conventional ultrasound displays the images in thin, flat sections of the body. Advancements in ultrasound technology include three-dimensional (3-D) ultrasound that formats the sound wave data into 3-D images.
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 COMPANY-SERVICE PROVIDER
FOR ULTRASOUND SCAN MACHINES
Scan Ray Solutions, We are leading service provider for any brand of ULTRSOUNDSCANNERS 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.
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.
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.