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Biomedical Instrumentation and Devices

Description: This quiz covers various aspects of Biomedical Instrumentation and Devices, including their principles, applications, and significance in medical diagnosis and treatment.
Number of Questions: 15
Created by:
Tags: biomedical instrumentation medical devices sensors imaging techniques patient monitoring
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Which of the following is a non-invasive imaging technique that uses magnetic fields and radio waves to produce detailed images of internal body structures?

  1. X-ray

  2. Ultrasound

  3. Computed Tomography (CT)

  4. Magnetic Resonance Imaging (MRI)


Correct Option: D
Explanation:

MRI is a non-invasive imaging technique that uses magnetic fields and radio waves to produce detailed images of internal body structures without exposing the patient to ionizing radiation.

What is the principle behind the operation of an electrocardiogram (ECG) machine?

  1. Measurement of blood pressure

  2. Detection of heart sounds

  3. Recording of electrical signals generated by the heart

  4. Monitoring of respiratory rate


Correct Option: C
Explanation:

An ECG machine records the electrical signals generated by the heart during each heartbeat, providing valuable information about the heart's rhythm, rate, and overall function.

Which type of sensor is commonly used in pulse oximeters to measure blood oxygen saturation?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

  4. Strain gauge


Correct Option: B
Explanation:

Pulse oximeters utilize photodiodes to measure blood oxygen saturation by transmitting and detecting light of specific wavelengths through the patient's finger or earlobe.

What is the primary function of a defibrillator?

  1. Measuring blood pressure

  2. Administering anesthesia

  3. Delivering electrical shocks to restore normal heart rhythm

  4. Monitoring brain activity


Correct Option: C
Explanation:

A defibrillator is a medical device used to deliver electrical shocks to the heart in order to restore normal heart rhythm during cardiac arrest or other life-threatening arrhythmias.

Which imaging technique involves the use of radioactive isotopes to visualize and assess the function of various organs and tissues?

  1. Ultrasound

  2. Computed Tomography (CT)

  3. Magnetic Resonance Imaging (MRI)

  4. Nuclear Medicine Imaging


Correct Option: D
Explanation:

Nuclear Medicine Imaging utilizes radioactive isotopes to trace and visualize the function of specific organs and tissues, providing valuable information for diagnosis and treatment.

What is the purpose of a ventilator in medical settings?

  1. Measuring blood glucose levels

  2. Providing mechanical ventilation to patients with respiratory difficulties

  3. Monitoring heart rate and rhythm

  4. Administering chemotherapy drugs


Correct Option: B
Explanation:

Ventilators are medical devices that provide mechanical ventilation to patients who are unable to breathe adequately on their own, supporting their respiratory function.

Which of the following is a common type of biosensor used to detect the presence of specific molecules or substances in a sample?

  1. Accelerometer

  2. Gyroscope

  3. Immunosensor

  4. Piezoelectric sensor


Correct Option: C
Explanation:

Immunosensors are biosensors that utilize antibodies or antigens to detect the presence of specific molecules or substances, such as proteins, hormones, or pathogens, in a sample.

What is the primary function of an anesthesia machine in surgical procedures?

  1. Measuring blood pressure

  2. Administering anesthesia gases to patients

  3. Monitoring brain activity

  4. Delivering electrical shocks to the heart


Correct Option: B
Explanation:

Anesthesia machines are used to administer anesthesia gases to patients during surgical procedures, inducing a state of controlled unconsciousness to prevent pain and discomfort.

Which type of imaging technique utilizes X-rays to produce cross-sectional images of the body?

  1. Ultrasound

  2. Computed Tomography (CT)

  3. Magnetic Resonance Imaging (MRI)

  4. Nuclear Medicine Imaging


Correct Option: B
Explanation:

Computed Tomography (CT) is an imaging technique that utilizes X-rays to produce cross-sectional images of the body, providing detailed anatomical information for diagnostic purposes.

What is the primary function of a pacemaker in medical settings?

  1. Measuring blood oxygen levels

  2. Administering insulin to diabetic patients

  3. Regulating heart rate and rhythm in patients with arrhythmias

  4. Monitoring brain activity


Correct Option: C
Explanation:

Pacemakers are medical devices that regulate heart rate and rhythm in patients with arrhythmias, ensuring that the heart beats at a regular and effective rate.

Which of the following is a common type of sensor used in medical devices to measure temperature?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

  4. Strain gauge


Correct Option: A
Explanation:

Thermistors are commonly used in medical devices to measure temperature due to their high sensitivity and ability to detect small changes in temperature.

What is the principle behind the operation of an ultrasound imaging system?

  1. Measurement of blood pressure

  2. Detection of heart sounds

  3. Transmission and detection of sound waves to produce images

  4. Monitoring respiratory rate


Correct Option: C
Explanation:

Ultrasound imaging systems utilize the transmission and detection of sound waves to produce images of internal body structures, allowing for real-time visualization and assessment.

Which type of sensor is commonly used in medical devices to measure blood pressure?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

  4. Strain gauge


Correct Option: D
Explanation:

Strain gauges are commonly used in medical devices to measure blood pressure by detecting the deformation of a sensor element caused by the pressure exerted by the blood.

What is the primary function of a dialysis machine in medical settings?

  1. Measuring blood glucose levels

  2. Administering anesthesia gases to patients

  3. Monitoring brain activity

  4. Removing waste products and excess fluid from the blood


Correct Option: D
Explanation:

Dialysis machines are used to remove waste products and excess fluid from the blood in patients with kidney failure or other conditions affecting kidney function.

Which of the following is a common type of sensor used in medical devices to measure respiratory rate?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

  4. Strain gauge


Correct Option: C
Explanation:

Piezoelectric sensors are commonly used in medical devices to measure respiratory rate by detecting the movement of the chest or abdomen during breathing.

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