Ultrasound beam alignment servo

A method of ultrasound beam enhancement comprising the steps:

• a) levitating an ultrasound means;
• b) generating an ultrasound beam by way of said ultrasound means;
• c) controlling two-axis tilt movement ›rotation! of said ultrasound beam with a servo controller;
• and
• d) controlling translation of said ultrasound beam with said servo controller.

An ultrasound-beam alignment servo-system comprising:

• a) a levitated rotor means capable of providing two-axis tilt movement, said rotor means including means for directing an ultrasound beam;
• b) stator means for inducing movement of said rotor means;
• c) sensing means for defining coordinates of said rotor means;
• and
• d) circuitry means for controlling said rotor means;
• wherein said sensing means relates position coordinates of said rotor means to said circuitry means so that said circuitry means controls said stator means and thereby controls movement of said rotor means and of said ultrasound beam.

A servo system for controlling the coordinates of a transcranial Doppler ultrasound comprising:

• a) a levitated rotor means within a housing and including means for directing said Doppler ultrasound;
• b) means for inducing two-axis tilt movement of said rotor means;
• c) sensing means for defining coordinates of said rotor means;
• and
• d) control means for controlling movement of said rotor means.