US PATENT SUBCLASS 600 / 458
.~.~.~ Contrast enhancement

Current as of: June, 1999
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600 /   HD   SURGERY

300  DF  DIAGNOSTIC TESTING {38}
407  DF  .~ Detecting nuclear, electromagnetic, or ultrasonic radiation {11}
437  DF  .~.~ Ultrasonic {10}
458.~.~.~ Contrast enhancement

DEFINITION

Classification: 600/458

Contrast enhancement:

(under subclass 437) Subject matter wherein means are provided to intensify reflectivity of the ultrasonic wave within that portion of the body under diagnosis by the use of marking devices, implantable means, or by structural adaptations on instruments used therewith.