Frequencies
Frequencies
Frequencies (/ˈfriːkwənsiz/), derived from the Latin word frequentia meaning 'crowd' or 'multitude', is a term used in various fields including Physics, Mathematics, and Medicine. In the medical field, it often refers to the number of times a particular event or circumstance occurs within a specified period.
Medical Usage
In Epidemiology, the term 'frequency' is used to describe the number of times a disease or health event occurs in a specific population within a specified time period. This is often used in the calculation of Incidence and Prevalence rates.
In Medical Imaging, frequencies are used in technologies such as Ultrasound and MRI to create images of the inside of the body. The frequency of the sound waves or radio waves used in these technologies can affect the quality and type of image produced.
In Electrocardiography, the frequency of the electrical signals produced by the heart can provide important information about a patient's heart health.
Related Terms
- Incidence: The number of new cases of a disease in a population over a specific time period.
- Prevalence: The total number of cases of a disease in a population at a specific time.
- Ultrasound: A medical imaging technique that uses high-frequency sound waves to create images of the inside of the body.
- MRI: A medical imaging technique that uses radio waves and a magnetic field to create detailed images of the inside of the body.
- Electrocardiography: A medical test that records the electrical activity of the heart.
External links
- Medical encyclopedia article on Frequencies
- Wikipedia's article - Frequencies
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