Patent ID: 7455406
Filing Date: 2008-11-25
Classification: A61B

Abstract:
1. An ophthalmic ultrasonic diagnostic apparatus which measures constituent parts of an examinee's eye through A-mode, the apparatus comprising: an ultrasonic probe for A-mode measurement including a transducer which emits an ultrasonic wave into the examinee's eye, and receives echoes reflected respectively from tissues of the constituent parts; calculation means for judging whether signals of the received reflected echoes are appropriate by analyzing the reflected echo signals and calculating measurement values of the constituent parts based on the reflected echo signals which are judged as appropriate; a memory which stores the calculated measurement values; grouping means for setting grouping ranges each having a predetermined permissible dispersion range with reference to the measurement value, and determining that either one of; central value calculating means for counting the number of the measurement values which fall within the respective grouping ranges, and calculating a central value based on the measurement values which fall within the grouping range such that the number of the measurement values falling within the grouping range reaches a predetermined number.