What Is Frequency And Wavelength In Ultrasound?

Words: 233

Pages: 1

The Frequency and Wavelength in Ultrasound Diagnosis: As stated earlier, ultrasound uses a high frequency and is considered ultrasound when the frequency is higher the 20,000 Hz – which is inaudible to the human ear. And in medical imaging, frequencies from 2 to 15 MHz or even higher are used. Wavelength is the distance between 2 points in which are identical in one wave cycle, for example the distance between a crest to another crest in a wave cycle. The wavelength is measured with the formula v=f λ (v=velocity in ms^-1, f= frequency in Hz and λ=wavelength in meters). In ultrasound diagnosis, wavelength plays a big role in affecting the resolution of an image created through ultrasound. As seen in the formula for wavelength earlier, wavelength

Show More

Science Exam Study Guide: Properties Of Waves And Physics

sound. a. Know and be able to describe the following: Wave: A disturbance that transfers energy from place to place Transverse wave: A wave that moves the medium in a direction perpendicular to the direction in which the wave travels. λ (wavelength): The distance between two corresponding parts of a wave. Compressional/longitudinal wave: A wave that moves a medium in a direction parallel to the direction in which the wave travels. Intensity: The amount of energy per second carried through…

Words 2090 - Pages 9

Bio communication exam notes Essay

investigation to identify the relationship between the wavelength and frequency (pitch) of a sound. Describe how you did this and outline your findings. We used a CRO (cathode ray oscilloscope) and audio oscillator. After selecting a sine wave output of about 500 Hz on the audio oscillator we connected it directly to the CRO and adjusted the volume until a note could be heard. We then observed and recorded our results of the frequency, wave shape and length and the pitch. We then…

Words 7752 - Pages 32

Medical Imaging Research Paper

doesn't expose the person to the radiation of an X-Ray. MRI's usually shows problems that can't be seen using other imaging methods, it also provides different information about the structures in the body compared to what can be seen with an computed tomography (CT) scan, ultrasound, or an x-ray. During an MRI test, the person or a part of said person's body is placed inside a machine that has a strong magnet, the magnetic field then temporarily realigns the hydrogen atoms in their body. The radio…

Words 991 - Pages 4

Electron and Energy Essay example

a “new kind of ray” that penetrated matter. Röntgen, a 50-year old professor of physics at Julius Maximilian University of Wurzburg, named the new kind of ray X-strahlen, or “X-rays” (“X” for unknown). Röntgen was looking for the “invisible high-frequency rays” that Hermann Ludwig Ferdinand von Helmholtz had predicted from the Maxwell’s theory of electromagnetic radiation. Röntgen’s discovery was submitted for publication on December 28, 1895 and was published on January 5, 1896. Röntgen developed…

Words 9036 - Pages 37

Essay on Biology Notes

Science 10 – Biology Chapter 1 – Tissues, Organs, and Systems of Living Things (Cells) 1.1 – Cell Structure Microscopy – The science of using microscopes to view samples or objects. Micrograph – A photograph taken with a microscope. Microscopes: * Leeuwenhoek Microscope – 250x. Hand held. * Fluorescence – 1500x. Fluorescent stains, glow. * Phase-Contrast Microscope – 1500x. Light Contrast. * BrightField/DarkField – 2000x. Bright/Dark background. * Scanning Electron Microscope…

Words 2229 - Pages 9

anat terms Essay

of paper, and the term “term paper” is used interchangeably with research paper. However, the traditional definition of a term paper does not always require research, so if your assignment is a term paper, make sure the requirements are in line with what a paper involving research entails. The anatomy of a research paper consists of four main parts: The introduction, including background information, history and outstanding research questions The body paragraphs, where research that includes current…

Words 8587 - Pages 35