Author: John Mulindi
-
3 Roles Played by Smart Sensors in Biomedical Instrumentation
A smart medical sensor is a device that detects a physiological variable and employs built-in computing capabilities to perform predefined function upon detection of this specific variable and then processes the data before passing it on to the next component in the measurement system. Smart sensors have tight coupling between sensing and computing elements hence…
-
Biomedical Instrumentation Questions & Answers
Q1. What are the problems encountered in biomedical measurements? The problems encountered in biomedical measurements are: Q2. What are the key requirements for specifying biomedical instrumentation systems? They key specifications to consider when specifying biomedical instruments include: Q3. What are the diagnoses made from Electroencephalogram (EEG)? The brain cells are referred to as neurons. The…
-
The Functions of Signal Conditioners in Biomedical Measurement Systems
In a Biomedical measurement system, the electrodes pick up the bioelectrical potential whereas the transducer converts the physiological signal to be measured into a usable electrical output. The outputs from the Bioelectrodes/transducers are then converted into an electrical quantity that is suitable for operating a display or recording device with the help of a signal…
-
Types of Amplifiers used in Biomedical Measurement Applications
Signal amplification is essential part of any biomedical measurement. Bioelectric measurements are usually low-level i.e. microvolt level measurements, therefore amplification is required to boost the level of the input signal to match the requirements of recording/display systems or to match the range of the analog-to-digital convertor, thus increasing the resolution and sensitivity of the measurement.…
-
The Instrumentation for the Medical Use of Radioisotopes Diagnosis
Radioisotopes diagnosis technique helps in obtaining image of the body anatomy and functions. The images are obtained by detecting energy emitted from the radioactive substance injected in the patient either intravenously or by mouth. The radiation emitted from the patient is similar to that emerging during radiography or CT scanning. The radioisotopes images help in…
-
Biomedical Instrumentation Multiple Choice Questions & Answers (MCQ1)
Answers have been provided at the end. Q1. The following are the major functional physiological systems of the body except? A. Cardiovascular system B. Respiratory system C. Electrocardiogram system D. Nervous system Q2. Physiological Signals are generated by the body during the functioning of various physiological systems. Therefore, physiological signals hold information which can be…
-
Bioelectric Potentials and Electrodes Questions & Answers
Q1. What do you understand by bioelectric potentials? List the different types of biopotentials. Bioelectric potentials are ionic voltages produced when special types of cells perform electrochemical activities. These bioelectric potentials can be measured and the measurement results provide meaningful information to physician to diagnose and treat the patient. The devices that convert ionic potentials…
-
Key Performance Requirements of Effective Biomedical Instrumentation Systems
The information obtained from a medical sensor or transducer is usually in form of current intensity, voltage level, frequency or signal phase relative to a standard. We look at some of the performance requirements considered in biomedical instrumentation systems as discussed below: Related: Key factors to consider when designing Biomedical Instruments
-
How Biotelemetry is Integrated with Telemedicine
Telemedicine which is also referred to as telehealth or e-health is the delivery of health care and the sharing of medical data over distances using telecommunication technologies. Telemedicine systems are supported by the state-of-the-art technologies like interactive video, high-resolution monitors, powerful computer systems, biotelemetry data acquisitions systems, expert clinical decision or recommendation systems, electronic patient…