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CN106687824A 图像处理装置、图像处理方法以及程序 失效 - 权利终止

图像处理装置、图像处理方法以及程序
摘要：
图像处理装置(1)具备：图像数据取得部(10)，取得脑的SPECT图像数据；脑区域ROI设定部(13)，在SPECT图像上设定脑区域ROI；纹状体ROI设定部(14)，在SPECT图像上设定纹状体ROI；直方图生成部(15)，生成其中横轴为计数值的等级、且纵轴为与所述等级对应的单位区域的频数的直方图；阈值决定部(16)，基于从脑区域ROI除去纹状体ROI得到的SPECT图像背景的计数值，决定用于判别出SPECT图像中的脑室和脑沟的阈值；区域判别部(17)，判别出计数值为阈值以下的区域和比阈值大的区域；以及SBR计算部(18)，除去阈值以下的区域，计算SBR(Specific Binding Ratio)。由此，在SBR的计算中，能够仅使用核医学图像数据并且消除脑室、脑沟的影响。
摘要（英）：

This image processing apparatus (1) is provided with: an image data acquisition unit (10) that acquires data of a SPECT image of a brain; a brain region ROI setting unit (13) that sets a brain region ROI in the SPECT image; a striatum ROI setting unit (14) that sets a striatum ROI in the SPECT image; a histogram generation unit (15) that generates a histogram in which the horizontal axis represents classes of count values, and the vertical axis represents the frequency of unit regions corresponding to each class; a threshold determination unit (16) that determines a threshold for identifying a cerebral ventricle and a sulcus in the SPECT image on the basis of count values in the background of the SPECT image wherein the striatum ROI is excluded from the brain region ROI; a region identification unit (17) that identifies a region with a count value less than or equal to the threshold and a region with a count value greater than the threshold; and an SBR calculation unit (18) that calculates a specific binding ratio (SBR), excluding regions with count values less than or equal to the threshold. This makes it possible to eliminate the influence of the cerebral ventricle and the sulcus in calculation of the SBR, using only nuclear medicine image data.

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