The operation of MRI is based on the nuclear magnetic resonance principle. Applying a static magnetic field followed by an oscillating magnetic pulse on a volume of tissue results in the emission of an electromagnetic field at the Larmor frequency. The purpose of this MQP is to design a dual stage low noise amplifier to amplify the radio frequency signals detected by the receiver coil. In order for the amplifier to function properly, it should have a noise figure of about 0.5dB, a gain of about 30dB, and a low input impedance. In addition, it should be unconditionally stable over a broad range of frequencies. Two amplifiers for 1.5T and 4.7T MRI scanners are designed and measurements were conducted to ensure their functionality.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• El Beqqali, Soufiane

Publisher

• Worcester Polytechnic Institute

Identifier

• 07E002M

Advisor

• Bogdanov, Gene
• Ludwig, Reinhold

Year

• 2007

Date created

• 2007-01-01

Resource type

• Major Qualifying Project

Major

• Electrical & Computer Engineering

Rights statement

• In Copyright