Introduction

Question 1

Define instrumentation

Answer 1

A collection of instruments & their application for the purpose of observation, measurement and control
e.g., a pacemaker

Question 2

Define signal processing

Answer 2

The science of modifying acquired time-series data for the purposes of analysis or enhancement
e.g., using a filter

Question 3

Define medical imaging

Answer 3

The technique & process of creating visual representation of the body for clinical analysis and medical intervention

Question 4

Sensitivity equation:

Answer 4

Sensitivity= number of true positives/number of true positives + number of false negatives

Question 5

Specificity equation:

Answer 5

Specificity: Number of true negatives/ Number of true negatives + Number of false positives

Question 6

What does sensitivity show in the performance of a diagnostic test?

Answer 6

Sensitivity shows the likelihood of a true positive being detected
e.g., I have a disease, the test also determines that i have a disease

Question 7

What does specificity show in the performance of a diagnostic test

Answer 7

Specificity shows the likelihood of a true negatives being detected correctly
e.g., I don’t have a disease, the diagnostic test shows me I have no disease