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现代医学影像技术在诊断眼部疾病中发挥着重要作用,同时亦能通过眼部影像学表现推测病变是否源于颅内或是全身系统性疾病。良性颅内压增高多以视力损害为首发症状,眼眶或颅脑MRI征象中包括空蝶鞍(79%)、视神经周围蛛网膜下腔增宽(74%)、视乳头隆起(56%)等。MRI和CT检查可以及时发现视网膜母细胞瘤球外侵犯以及远处转移的病变,为临床治疗提供依据。MRI能够发现动眼神经麻痹的大多数(71%)病因,且病变位置均在核团所在脑干及动眼神经在颅内走行行程中,少数位于颅眶沟通的眶上裂区。以眼部表现为首发症状的IgG4相关性疾病具有双侧泪腺肿胀及多发眼外肌增粗等特征性的影像表现,治疗前后生长抑素受体SPECT/CT显像在判断疾病的活动性及疗效评价的定量研究中具有较大应用价值。
Modern medical imaging technology plays an important role in the diagnosis of eye diseases. At the same time, it is also possible to speculate whether the lesions are caused by intracranial or systemic diseases through the imaging features of the eye. Visual acuity was the first symptom of benign intracranial hypertension, and MRI of the orbital or cranial brain included empty sella (79%), widening of the subarachnoid space (74%) and papillae (56%), etc. . MRI and CT examination can be timely detection of extragonarial stromal invasion of retinoblastoma and distant metastasis, provide the basis for clinical treatment. MRI can find the majority (71%) of the causes of oculomotor nerve paralysis, and the lesion is located in the brain stem and the oculomotor nerve in the process of intracranial stroke, a few located in the supraorbital fissure of cranial orbital communication. IgG4-related diseases with ocular manifestations as the first symptom have characteristic imaging manifestations such as bilateral lacrimal gland swelling and multiple extraocular muscle thickening. Before and after somatostatin receptor SPECT / CT imaging in determining the disease activity and The quantitative evaluation of efficacy evaluation has great application value.