超音波三次元データのテクスチャ情報を用いた組織像の抽出

抄録

This paper has proposed an algorithm by which the tissue can be extracted using texture information of ultrasonic echo signals which are obtained from the human body. The extraction is the inevitable process when any target tissue can be three-dimensionally imaged on the CRT. So far, the intensity thresholding method has been executed in which the great difference of echoes on the boundaries between fetus and amniotic fluid has been used for detection of the organs like a three-dimensional (3-D) display of the fetus. Therefore in case of tumors in the liver there is not always a definite difference between the tumor and normal tissue. So it is difficult to distinguish between them by the conventional thresholding method. The proposed method here, which is expanded from a conventional two-dimensional texture analysis to a 3-D one in order to advance the ability of extraction, makes use of the difference of texture information between them and has demonstrated the extraction results of the liver tumors.