corpus callosum, cingulate gyrus, amygdala, hippocampus, falciform ligament, gallbladder, spleen, left kidney, right kidney, aorta, vena cava, carotid artery, vertebrae, cervical spine, dural sac, meninges, subarachnoid space, intracranial hematoma, cerebral edema, gallstones, renal calculi, hypertrophied lymph node