Sets visualization window
        :param windowC: window center
        :param windowW: window width
        :return:

def set_window(self, windowC, windowW):
        """
        Sets visualization window
        :param windowC: window center
        :param windowW: window width
        :return:
        """
        if not (windowW and windowC):
            windowW = np.max(self.img) - np.min(self.img)
            windowC = (np.max(self.img) + np.min(self.img)) / 2.0

        self.imgmax = windowC + (windowW / 2)
        self.imgmin = windowC - (windowW / 2)
        self.windowC = windowC
        self.windowW = windowW