低血糖顱腦損傷(編輯修改稿)
2024-10-01 12:56 本頁面
【文章內(nèi)容簡介】 the cortex over the temporal and occipital lobes. B and C, Diffusionweighted (10000/105, b value 1000 seconds/mm2) MR images showing corresponding hyperintensity in the cortex. D and E, ADC maps at the same levels as B and C show decreased ADC in these lesions (618 103 mm2/s) pared with normal white matter (819 103 mm2/s). 第三十二頁，共五十頁。 大腦皮質(zhì)偏側(cè)損害 Images in 26yearold man (patient 6) found unconscious, with a Glasgow Coma Scale score of 7, and not moving left side. (a) DW MR image shows confluent hyperintense lesions in the right inferior frontal,insular, and posterior temporal lobe cortices. (b) MR angiogram shows increased vascularity of the right middle cerebral artery branches (arrow) pared with the normal left side, suggesting augmented collateral flow. (c) Relative cerebral blood volume map shows no noticeable decrease in the abnormal right cerebral hemisphere。 blood volume was in fact increased by 20%–25%, a finding that is also suggestive of maximal vasodilatation (see text). (d) Graph of singleoxel MR spectroscopic data in affected right cerebral cortex shows decreased Nacetylaspartate (NAA) level, preserved choline (Cho) and creatine (Cr) levels, and no evidence of abnormal lactate level ( ppm). 第三十三頁，共五十頁。 大腦皮質(zhì)損害，丘腦未累及 Diffusionweighted magic resonance (MR) imaging (A) and T2weighted MR imaging (B) showed a diffuse cortical high signal. The brainstem,cerebellum, and thalamus were spared as were the dorsofrontal cortex and occipital poles. The signal change in the hippocampus was relatively small on diffusionweighted MR imaging. On T2weighted MR imaging, a focal highsignal lesion was seen in the thalamus bilaterally (more prominent on the left side) and in the centrum semiovale. Diffuse white matter lesions were seen on the T2weighted MR image 第三十四頁，共五十頁。 新生兒低血糖 MR表現(xiàn) 病例 1MR I?? ?? 生后 34 h出現(xiàn)低血糖表現(xiàn) , 58 h入院 , 血糖為 1. 7mm ol/L。 A ~ D 為生后 3 d所見。 A, B分別為矢狀面 T1W I和橫斷面 T2W I, 可見頂枕葉 T1W I低信號 , 而 T2W I改變不明顯 。 C為 DW I, 可見頂枕葉皮層高信號 , 提示明顯的細胞毒性水腫 。 D~ F為生后 13 d T1W I( D) , T2W I( E )和 DW I( F)圖像 , 枕部可見明顯的 T1W I低信號 , T2W I高信號 , 而 DW I頂枕部轉(zhuǎn)為低信號 , 提示皮層發(fā)生水腫壞死。 第三十五頁，共五十頁。 皮質(zhì)、基底節(jié)、腦室旁白質(zhì)損害 Fig. 1 a–d (Patient 5) A 57yearold diabetic man was found in a a 6 h after he was last seen. Glucose level was 16 mg/dL at presentation. Fluidattenuated inversion recovery image (a) on the day o
環(huán)評公示相關(guān)推薦
鄂ICP備17016276號-1