History of Ultrasound Timeline

In 1939, Sergei Sokolov recognized the potential for ultrasonic imaging of objects, anticipating the use of sound waves to form images.

Sokolov's recognition that ultrasound might achieve resolution comparable to an optical image helped frame ultrasound as an imaging technology rather than solely a source of sound or vibration.

The 1939 discussion of ultrasonic imaging identified a 3 GHz sound wave as a possible route to optical-like image resolution, linking frequency with imaging detail.

Sergei Sokolov proposed that a 3 GHz sound wave could produce resolution comparable to an optical image, highlighting the imaging possibilities of very high-frequency ultrasound.

The 1948 publication of the first article on ultrasound history provided a written account of the field's development and its scientific antecedents.

The first article devoted to the history of ultrasound was written in 1948, marking an early effort to document the development of the field.

Some ultrasound applications use intensities as high as 1000 watts per square centimeter, demonstrating the broad power range possible in applied ultrasound.

The described resonant systems can have displacement amplitudes up to 50 micrometers, or 0.0020 inches, illustrating the small mechanical movements associated with ultrasonic operation.

The displacement amplitude of the resonant body can be as low as 22 micrometers, or 0.00087 inches, in the applications described.

The listed ultrasonic systems operate across frequencies ranging from 25 to 55 kHz, a band used to characterize particular resonant ultrasound applications.

The supplied account states that cavitation can be induced in liquid media above intensities of 10 watts per square centimeter, illustrating the threshold associated with high-intensity ultrasound.

Image source: Ultrasonic cleaning

At sufficiently high intensities, ultrasound can induce cavitation in liquid media. This effect is identified as an important consequence of applying powerful ultrasonic energy.

The adoption of ultrasound by the beef cattle industry by 2005 illustrates the technology's expansion from scientific and medical contexts into agricultural management.

By 2005, ultrasound was being applied to improve the yield of cattle operations, showing its role in production and herd-management decisions.

The beef cattle industry began using ultrasound by 2005 to help improve animal health, demonstrating an agricultural application of the technology.

By 2005, ultrasound technology had begun to be used by the beef cattle industry, extending ultrasound applications into livestock production.

In 2008, Atul Kumar reported the synthesis of Hantzsch esters through a multicomponent reaction protocol carried out in aqueous micelles using ultrasound.

Atul Kumar also reported the ultrasound-assisted synthesis of polyhydroquinoline derivatives in aqueous micelles in 2008, demonstrating an application of ultrasound in chemistry.

The 2008 work by Atul Kumar used ultrasound in aqueous micelles as part of a multicomponent reaction protocol, showing how ultrasound can support chemical synthesis.

The UK's independent Advisory Group on Non-ionising Radiation, known as AGNIR, produced a report in 2010 as part of the assessment of non-ionising radiation.

The AGNIR report produced in 2010 was published by the UK's Health Protection Agency, providing an official UK institutional context for the report.

In July 2015, The Economist reported that researchers at the University of California, Berkeley had conducted ultrasound studies using graphene diaphragms.

Image source: Graphene

Researchers at the University of California, Berkeley were reported in July 2015 to have conducted ultrasound studies using graphene diaphragms, connecting ultrasound research with advanced materials.

Image source: University of California, Berkeley