The advancement in technology has made it possible where necessary to monitor subjects from some distance using wireless telemetry. The biological parameter commonly studied this way is the electrocardiogram. The display of ECG and cardiac rates gives enough information … Read More
Category: Biomedical Measurements
The various biomedical measurements performed in medical diagnosis and the different instruments used to collect data, process it, then record, display or transmit the data. For example how blood flow and blood pressure measurement is done, types of oximeters, etc.
Types of Spirometers & Technologies used
Spirometer is the instrument used to measure lung capacity and volume. The record obtained from spirometer is called a spirogram. There are a number of spirometers used in respiration volume measurements. In this article, we look at general types of … Read More
3 Common Causes of Anomalies in ECG Recordings
Polarizable vs. Non-Polarizable Electrodes
We may categorize electrodes into two possible types albeit theoretically: those that are perfectly polarizable and those that are perfectly non-polarizable. This categorization is based on what happens to an electrode when a current passes between it and the electrolyte. … Read More
4 Classifications of Biomedical Measurement Instruments
Instruments that are used in biomedical measurements can be grouped into four categories, based on the following:
- Quantity that is sensed
- Principle of transduction
- Organ system
- Clinical medicine specialities
Classification Based on Quantity that is sensed
The techniques employed in … Read More
Common Challenges of EEG Analysis
Though EEG signal detection provides a key indicator for detection of neurological status and disorders, its biomedical application is limited. This is because of the complicated nature of EEG signal and the complexities regarding the interpretation of the signals.
Some … Read More
The Principle of Immunoassay Biosensor
The principle of immunoassay sensor operation is based on the observation of ligand-binding reaction products between a target analyte and a highly specific binding reagent. The important component of an immunosensor is the biological recognition element, which normally consists of … Read More
Basic Features of Intravascular Fiber Optic Blood Gas Sensor
Intra-arterial blood gas sensors usually use a single or double fiber configuration. Typically, the matrix containing the indicator is attached to the end of the optical fiber. Because the solubility of O2 and CO2 gases, as well as … Read More
How Arterial Tonometer is used for Blood Pressure Measurement
The arterial tonometer is an instrument used to measure arterial blood pressure. It differs from sphygmomanometer in that, rather than measuring the pressure at greatest contraction and greatest heart dilation (systolic and diastolic) it provides continuous measurement throughout the heart’s … Read More
The Measurement of Ultraviolet Radiation in Biomedical Field
The measurement of ultraviolet radiation in biomedical field may be categorized into three classes:
- Physical
- Biological
- Chemical
In general, physical devices measure power, whereas chemical and biological systems measure energy.
The common radiometric terminology is shown in the table below:… Read More