Module Overview

Medical Measurements 3

This module provides an introduction to the principles of physics and physical instrumentation as they are applied to the measurement and recording of human physiological signals. The module is inextricably linked to its other two partners in this course.

Module Code

PHYS 2813

ECTS Credits


*Curricular information is subject to change

EEG and EMG Instrumentation (8 hours)

EEG component waveforms (alpha, beta, gamma, delta). Vertex Waves, POSTs, Sleep, Glossokinetic and Eye movement artifacts; 10-20 measurement electrode system. Montages (bipolar and referential montages). Amplifier configurations. Localisation of foci. Gain and Sensitivity Controls. Routine Calibration. Moving Coil Galvanometer and Pen Recorders – functionality and inaccuracy. Activation Methods. Elicitation of Evoked Potentials. VEP measurement (pattern reversal, full field, half field, photic stimulation). Signal Averaging Theory.

EMG Measurement Theory. Electrode Placement. Nerve Conduction Studies. Waveform Morphology.

Filters (4 hours)

Definition and Bode Plots of Low, High, Band Pass, Band Stop and Notch Filters. Filter Design and Adjustment. Applications.

Cardiac Catheterisation and EP Studies (4 hours)

Procedure for Insertion of a Catheter (Percutaneous Puncture and Brachial Cut-Down). Left and Right-Heart Catheterisation. Angiography and Digital Subtraction Angiography. Angioplasty. Catheter Types. Types and categories of cardiac arrythmia. Construction of EP study laboratory. EP study procedure.

node overdriving. SACT conduction time measurement. His-Bundle Electrogram. Pacemaker circuit analysis. Pacemaker categories. Choice of Pacemaker.



Pulmonary Function Testing – Principles and Instrumentation (10 hours)

Categories of Respiratory Test. Equation of Gas Flow in Pulmonary System. Definitions of Airway Resistance and Compliance. Relationships between Resistance and Compliance in disease. Testing Categories with respect to Resistance and Compliance Testing. Mechanical Pulmonary Function Tests. Indications for Spirometry. VC Maneouver. Typical Measurements in Health and Disease. Epidemiological Origin of Limits. FVC Maneouver. Typical Measurements in Health and Disease. Epidemiological Origin of Limits. Flow-Volume plots and Changes in Health and Disease (wrt Equation of Gas Flow). Flow and Volume Measurements – Bellows Spirometer, Angular Displacement Transducer, Water Sealed Spirometer, Pneumotachometer (Fleisch PTM, Lilly PTM), Hot wire PTM; Lung Volume Measurements (Open Circuit, Multiple Breath He). Diffusion Capacity Tests, DLCO.


Traditional lectures, and supporting laboratory classes, and self learning

Module Content & Assessment
Assessment Breakdown %
Formal Examination40
Other Assessment(s)60