JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Analog and Digital Circuit Design of Circuits: Analog and digital circuit design of circuits for biomedical applications using operational amplifiers, data acquisition, conversion, and interface to microcomputers. Patient safety, patient isolation circuits. Operating principles of various types of patient isolation circuitry. Most suitable isolation circuit for a given application. Test isolation circuits.

UNIT - II

Data Acquisition: Sample and Hold Conversion, Multi-Channel acquisition, High speed sampling in ADC, Selection of drive amplifier for ADC performance, Gain setting and level shifting, ADC input protection, Multichannel channel applications for data acquisition systems, External protection of amplifiers, High speed ADC architectures.

UNIT - III

Interference and Noise Reduction Techniques: Types of noise-Thermal noise, shot noise, excess noise, Burst, Internal noise in OPAMPs, Noise issues in high speed applications, Causes of noise and interference encountered in medical equipment. Manifestation of noise or interference. Techniques for minimizing the impact of noise or interference when using various types of medical equipment.

UNIT - IV

Hardware Approach to Digital Signal Processing: Coherent and non-coherent sampling, Digital signal processing techniques, DSP hardware, ALU, Multipliers, accumulators, data address generators, serial ports, system interfacing ADC’s and DAC’s to DSPs. Interfacing IO ports to DSPs.

UNIT - V

Use of Telemetry in A Medical Environment: Available frequency bands and licensing requirements for RF telemetry environments. Typical telemetry methods used in medical applications. Common problems with telemetry installations. Battery management procedures. Types of batteries used in medical equipment. Typical shelf life of common batteries. Applications for common batteries. Techniques to improve life of batteries. Test equipment for correct function after battery replacement.

TEXT BOOKS:

• 1. Halit Eren, “Electronic portable instruments-Design and applications”, CRC Press, 2004.
• 2. Robert B. Northrop, “Analysis and application of analog electronic circuits to biomedical instrumentation”, CRC Press, 2004.

REFERENCE BOOKS:

• 1. Reinaldo J. Perez, “Design of medical electronic devices”, Academic Press, 2002. M. TECH. I YEAR I SEMESTER BIOMEDICAL SIGNAL PROCESSING AND INSTRUMENTATION BIOMEDICAL INSTRUMENTATION LAB

Note

A minimum of 10 experiments to be done

• 1. Design of ECG Amplifier using Instrumentation Amplifier
• 2. ECG Recording and Heart rate measurement
• 3. Study of Electrical activities of Skeletal Muscles
• 4. Design of Respiration Rate Measurement.
• 5. Demonstration of Defibrillator, Pacemaker and Short wave Diathermy.
• 6. Design an instrument for temperature measurement to control and maintenance at constant temperature.
• 7. Demonstration of Blood Pressure measurement and phonocardiogram
• 8. Study of brain waves using EEG machine
• 9. Study of Patient monitoring system.
• 10. Demonstration of ultrasound machine using various modes
• 11. Demonstration of Heart lung machine and Hemodialysis
• 12. Demonstration of X-Ray, CT Scan, MRI, Gamma camera, SPECT and PET Imaging (by visiting to a Hospital)