Ultrasonic imaging apparatus

摘要

Provided is an ultrasonic imaging apparatus including: a time-gain controller (TGC) that compensates an amplitude fading occurring in the process of propagation inside a living body; a scan converter (SC) that constructs image data; a TIC measurement unit that measures a TIC of each pixel; an evaluation index input unit that inputs an index for evaluating hemodynamics on the basis of a TIC; a mapping parameter estimation unit that estimates a mapping parameter comparable to an evaluation index; a TIC image construction unit that constructs a two-dimensional image on the basis of the mapping parameter; and a pixel detection unit that extracts a region corresponding to a color map from a TIC image, and utilizing a TIC measured with each pixel so as to measure a difference in hemodynamics.

主权项

1. An ultrasonic imaging apparatus comprising:
a transducer that transmits or receives ultrasonic waves to or from a subject; an image data production unit configured to produce a plurality of image data items on the basis of a plurality of receiving signals due to the transducer; a frame memory configured to preserve the image data items; a temporal change measurement unit configured to measure a temporal change in brightness of each of pixels of image data; an image construction unit configured to construct a color map on the basis of the results of measurement by the temporal change measurement unit; an input unit configured to input display-item information concerning the color map; and a pixel detection unit configured to extract pixels from the color map so as to construct an extractive image; wherein the ultrasonic imaging apparatus further comprising: a mapping parameter estimation unit configured to measure a saturated brightness(Imax) of the contrast medium, and an average brightness (Ibase) before injection per each of pixels on the basis of the temporal change measured by the temporal change measurement unit, and configured to calculate a mapping parameter on the basis of the measured temporal change, wherein: the image construction unit configured to construct the color map on the basis of the mapping parameter.