中樞神經(jīng)系統(tǒng)影像診斷cns-文庫吧
2024-12-20 04:16 本頁面
【正文】 ow the normal position are presented the zonary dense image on the midline . Calcification of choroid plexus are presented the anomalistic dense image and lateral to midline. The dense shadow between in the anterior and posterior clinoid process. 1. White matter: is hypodense to gray matter. CT values is 2030Hu 2. Gray matter: is hyperdense to white matter . CT values is 3040Hu 3. Ventricle and cistern : are hypodense. CT values is 010Hu 4. Skull : is hyperdense. CT values 250Hu 5. Physiological calcification: Spot or patch dense shadow. CT values60Hu 二、 CT manifestation 三、 MRI manifestation 1 . Morphological manifestation Axial, coronal,sagittal MRI can clearly show the shape of brain and spinal cord,such as white matter,grey matter,ventricle,cerebral fissure,brainstem,cerebral vessel,pituitary body,et al. The efficiency is close to gross specimen . T1WI T2WI WHITE MATTER HIGH LOW GREY MATTER LOW HIGH CSF LOW HIGH FAT HIGH MEDIUM SKULL TABLE LOW LOW DIPLOE HIGH LOW MENINGES LOW LOW VESSEL LOW LOW CALCIFICATION LOW LOW MRI signal intensity Frontal lobe Pituitary body Central sulcus Pituitary stalk Optic chiasm Genu of corpus callosum Medulla oblongata Clivus Sphenoid sinus Parietal lobe Thalamus Occipital lobe Mamillary body Quadrigeminal body Straight simus 4th ventricle Cerebellar tonsil Genu of corpus callosum Frontal lobe Splenium of corpus collosum 3rd ventricle Thalamus Head of caudate nucleus Globus pallidus Occipital lobe Optic radiations Septum pellucidum Posterior horn of lateral ventricle Anterior horn of lateral ventricle Interventricular foramen Parietooccipital sulcus Thalamus Head of caudate nucleus Globus pallidus Occipital lobe Optic radiations Anterior horn of lateral ventricle Interventricular foramen 3rd ventricle Genu of corpus callosum Septum pellucidum Splenium of corpus collosum Posterior horn of lateral ventricle Posterior limb of internal capsule Genu of internal capsule Anterior limb of internal capsule Parietooccipital sulcus Parietal lobe Superior temporal gyrus Middle temporal gyrus Pons Med
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