Blood Flowmeters Blood flow-meters are the devices that monitor the blood flow in various blood vessels and measure the cardiac output. In the blood vessels, the blood flow rate is maximum along the axis of the vessel and decreases with the square of the distance from the axis, reaching zero at the wall … Read moreBlood Flowmeters
In this article, we will learn about different test parameters that are required after performing medical tests on patients to analyse statistical data. We may define terms for test results 1. True positive (TP): A true positive test result is one that detects the condition when the condition is present. TP denotes the number of true … Read moreTest Statistics-BioInstrumentation
Biotelemetry consists of two parts i.e. Bio and Telemetry. Bio is related to living being or process or phenomenon occurring in the human body. Telemetry is the measurement at a distance. So, Biotelemetry is a method of measuring biological parameters from a distance. The transmission of data from the point of generation to the point of … Read moreBiotelemetry System
LASER LASER stands for Light Amplification by Stimulated Emission of Radiation. LASER is a narrow beam of light of a single wavelength (monochromatic) in which each wave is in phase(coherent) with other near it. Laser apparatus Laser apparatus is a device that produces an intense concentrated, and a highly parallel beam of coherent light. Atom … Read moreLASER Working | Types & Applications
X-rays It is a form of electromagnetic radiation having a high frequency (energy) or shorter wavelength. It has no mass, no charge but has energy. It travels at the speed of light When an X-ray is projected on the human body, three things happen i.e. Pass all the way through the body deflected or scattered … Read moreX-ray Working | Applications
What is Ultrasound? Ultrasound or ultrasonography is a medical imaging technique that uses high-frequency sound waves and their echoes to create images of the inside of the body. This technique is similar to the SONAR used by submarines, echolocation used by bats, dolphins, and whales. How Ultrasound Creates an Image A gel is applied to the body area which … Read moreUltrasound Principle | Working & Applications
Body Planes They are the hypothetical geometric planes that are used to divide the body into sections. Body Planes are commonly used in both human and zoological anatomy to describe the location or direction of bodily structures. 1. Sagittal or median plane divides the body into sinister and dexter (left and right) sides. 2. Coronal … Read moreHuman Body Anatomical Planes & Sections
Electroencephalography or EEG is the technique of capturing brain’s electrical activity. It was first discovered by Hans Berger in 1929. EEG signal recording can be done using scalp electrodes or intracranial procedure of capturing EEG. International 10-20 system of electrode placement is widely used across the globe for recording scalp EEG. Neurologist classified the brain … Read moreElectroencephalography or EEG
In previous, article we discussed ECG (Electrocardiogram). In this article, we will see about different types of ECG. The type of ECG monitoring depends on the frequency and severity of symptoms. There are three types of ECG monitoring i.e. resting ECG, stress ECG, and ambulatory ECG. Ambulatory ECG is divided into 3 groups i.e. Holter monitors, … Read moreTypes of ECG
Holter Monitor It is a small, wearable device that records your heart rhythm. It is very similar to a mobile phone. A patient usually wears a Holter monitor for one to three days. The device will record all of your heart rhythms during that time. So, a Holter monitor test is usually performed after an ECG (electrocardiogram) … Read moreWhat is Holter Monitoring?