METHOD FOR ULTRASOUND DIAGNOSTICS AND APPARATUS FOR PERFORMING THE SAME Russian patent published in 2007 - IPC A61B8/00 A61K49/22 A61B5/01 

FIELD: medical instrument making, possibly non-invasive determination of temperature of biological objects inside living organism.

SUBSTANCE: method comprises steps of introducing to blood of investigated patient of echo-contrast matter; generating ultrasound pulse signals; receiving and converting echo-signal reflected from investigated organ of patient to electric signals; determining amplitude values of electric signals; separating spectrum zone of reflected acoustic signal; displaying image of investigated organ of patient. At step of preparation for investigation, temperature of sample of echo-contrast matter including gas-filled micro-bubbles is lowered till its least value in investigated temperature range and said sample is irradiated with ultrasound signal. Reflected echo-signals are converted to electric ones and signal with maximum amplitude is separated. Then concrete value of frequency of converted electric signal is measured and registered. Code electric signal corresponding to said frequency value is formed and stored. Sample is scanned at predetermined pitch and procedure of frequency measuring of converted electric signal is repeated. Then temperature of sample is changed by predetermined temperature pitch and measurements are repeated. At investigating patient according to preset scanning mode, wide-band pulse signal is generated; in spectrum of said wide band signal components of temperature signal spectrum are included while each received reflected echo-signal is converted to electric signal. Simultaneously with formation of image signal, in addition spectrum zones are separated corresponding to resonance frequencies of echo-contrast matter; amplitude values of respective signals are compared, electric signal with maximum amplitude is selected, frequency value corresponding to it is measured. Then code signal is formed and it is compared with reference code signals. At their coincidence respective temperature value is appropriated to respective spot of mage of investigated organ of patient. Apparatus for performing the method includes ultrasound converter connected through line- switching unit to unit for forming J acoustic lines; image signal receiver connected with scanning converter; memory circuit; comparator; calculation unit and monitor. Apparatus includes in addition K-stage regulator of temperature of thermostat for placing sample of echo-contrast matter; frequency meter; receiver having J units of N-duct filters, detectors and integrators connected in series; J units for selecting maximum-amplitude signals and

comparator.

EFFECT: enlarged functional possibilities of method and apparatus.

2 cl, 4 dwg