Patent ID: 6590830
Filing Date: 2003-07-08
Classification: G01N,G03H,Y10S

Abstract:
A process for improving image quality in an ultrasonic imaging apparatus, wherein the ultrasonic imaging apparatus comprises a transducer assembly, a transducer means having one or more transducers for outputting an ultrasonic wave, an acoustic lens assembly, and a holographic image detection system, and a transducer assembly electric control means for controlling frequency, power, timing and duration of ultrasonic output pulse, spherical or cylindrical waves of the transducer means wherein the transducer means is mounted on a movable support having a center axis, comprising the steps of:(a) providing an object to be internally imaged to be held by the object holder; (b) transmitting a pulse sequence of ultrasound, each pulse within the sequence comprises a plurality of cycles of a single frequency (Æ’) of ultrasound, wherein each sequence comprises multiple frequency pulses (Æ’1, Æ’2, Æ’3, . . . Æ’n); and (c) imaging the object from a hologram formed in the holographic detection system for each pulse within the sequence.