| The normal anatomical data of optic nerve, superior ophthalmic vein, and posterior wall of eyeball were collected with MRI and cryosection technique. Their differences between different age sections were analyzed simultaneously, and then the morphological characteristics of intracranial hypertension were screened. Based on the correlative analysis between the diameter of perioptic subarachnoid space and superior ophthalmic vein, the diameter and length of optic nerve and intracranial hypertension, the possibility and sensitivity of MRI were discussed in the evaluation of elevated intracranial pressure, which would be the image evidence for the clinical diagnosis of intracranial hypertension. Combined with the eyeground examination, the image characteristics of eye-associated structures were observed and its value on the diagnosis of optic disk edema was evaluated.Methods and materialsThe horizontal, coronal and sagittal three-dimensional sections were sliced and photographed at–25℃with high accuracy digitized milling machine. Ninety-five normal adult head MRI images were collected and divided into 5 groups according to their age and then compared with above section images. The groups were: 0～9(20 cases),10～19(20 cases),20～39(17 cases),40～59(19 cases)and 6017 cases,which was used as the anatomical data for the judgement of intracranial hypertension.Morphology observation of optic nerve, superior ophthalmic vein, and posterior wall of eyeball and optic disk were done in 107 intracranial hypertension patients. The quantitative analyses were carried out in 60 patients (60/107). The diameter of the perioptic subarachnoid space and superior ophthalmic vein, the diameter and length of optic nerve were measured respectively.MRI scans were taken in 71 patients (47 cases with optic disk edema and 24 with normal optic disk) suffered from intracranial hypertension and underwent eyeground scope examination. The characteristic signs, such as"double-track"sign, intraocular protrusion of...
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