Bilateral Symmetric Hypodense Lesions in the Basal Ganglia: An Important CT Sign of Infantile Beriberi 双侧脑基底节对称性低密度病变&婴儿脚气病的一种重要CT征象
There were also slightly hypodense shadow with hazy border in the basal part of the pons. 桥脑基底部也有稍低密度影,边缘模糊。
CT Diagnosis of Symmetric Hypodense Lesion in the Basal Ganglia 脑基底节区对称性低密度病变的CT诊断
In the delayed phase, the enhancement of abscess diminished in that the hypodense ring enhanced and became isodense, or the abscess enhanced diffusely and became smaller, the colliquative necrosis area more obvious. 延时期,脓肿增强有所消退,脓肿周围低密度环可强化为等密度,或脓肿内部强化,病变范围缩小,液化坏死区更显明显。
In the delayed phase, the wall and edematous zone of the abscess were all isodense, only the necrotic areas were not enhanced and was hypodense. 延迟期脓肿壁及水肿均为等密度,仅坏死区无强化呈低密度。
Results On plain scan, hypodense lesion was a common presentation of MLL. 结果MLL平扫密度较低。
Total examinations were 31 times. CT scans showed hydrocephalus in 7, enlarged ventricles in 2, hypodense lesions in 9, cerebral edema in 3, ventricular enhanced ependyma with contrast in 2, intracerebral nodules, calcification, cerebral atrophy and enhanced meninges one time respectively. 共查31例次,其中脑积水7次,脑室扩大2次,低密度病变9次,脑肿胀3次,脑室室管膜增强2次,结节、钙化、脑萎缩、脑膜增强各1次。
Cases of subcapsular hypodense hematomas were found, performed as crescent shape with clear edge. 包膜下血肿3例,呈边界清楚光滑的新月形或半月形低密度区。
Results: Of the 62 lesions, 23 lesions were typical and 39 lesions were atypical. In plain CT scan, the abscesses usually exhibited as hypodense mass and air can be seen in the cavity. 结果:62个肝脓肿中,典型肝脓肿23个,不典型肝脓肿39个,CT平扫均表现为较正常肝组织为低的低密度灶,部分病灶可见脓腔内气体。
Multiloculated or honeycomb like hypodense area with septa and lesion which could be enhanced in 18 cases; 多房或蜂窝状低密度区,病灶内房隔及细小脓肿壁均可强化,18例;
The main character of brain CT is symmetric butterfly shape hypodense lesions in both thalami. CT以双侧丘脑成蝶形对称性低密度灶为特征。
In the one case of parathyroid carcinoma, both parathyroid ultrasonography and CT showed irregular low-echo or hypodense mass with calcification in it, CDFI showed no blood flow signal. 腺癌1例,B超和CT均示形态不规则,有点状钙化的低回声或低密度肿块,彩超无血流信号;
The thickened membrane of solid adenomas formed the more hypodense circle on CT in 8 cases. 8例实体性腺瘤增厚的包膜形成CT上的更低密度圈。
CT scan revealed that most of the tumors were homogeneous hypodense solid masses, which were well circumscribed. CT扫描肿瘤多为均匀低密度,边界清晰。
Results: Positive CT findings were seen in all the 12 cases and the signs presented as diffused hypodense cerebral parenchyma in 12 cases, cerebral atrophy in 6 cases and calcification in bilateral caudate nuclei in 4 cases. 结果:12例表现为弥漫性的低密度灶,脑萎缩6例,双侧尾状核钙化4例。
The thyroid cancers unevenly infiltrated the thyroid tissues around the nodulars in 4 cases and the margin of the nodular goiter was noticeably uneven in 1 case, while the peninsular hypodense areas were formed on CT. 4例甲状腺癌的瘤组织不均衡地浸润相邻的甲状腺组织和1例结节性甲状腺肿的结节边缘极度凹凸不平,均形成CT上的半岛状低密度区。
Cases of mixed solid and subcapsular hematomas were found, the mixed hematomas were connected by hypodense channels across the spleen. 混合血肿2例,表现为实质血肿与包膜下血肿并存。
CT Study on the "More Hypodense Areas" of Primary Hepatoma 肝癌密度更低区的CT研究
Results: The CT features of hepatic abscess were variable and could be classified into 3 types: ① Round hypodense area with ring enhancement and a hypodense outer rim around the abscess membrane ( double target sign) in 36 cases; 结果:肝脓肿的CT表现变异较大,大致可分为3种类型:①圆形或类圆形低密度区伴环状强化,脓肿壁外围可有低密度环呈双靶征,36例;
Endodermal sinus tumor presented as cystic mass and the other one presented as mainly solid mass with large irregular hypodense necrotic area. 内胚窦瘤呈囊性1例,呈实性为主1例,实性肿块内见较大的不规则低密度坏死区。
Results Among 214 of 216 patients, brain CT scan revealed bilateral symmetry or probable symmetry slightly hypodense lesions with poorly-defined border in the periventricular white matter. 结果全部患者中214例颅脑CT平扫显示双侧脑室周围自质有稍低密度影,病变模糊边界不清,双侧对称或基本对称;
Results CT plain scan showed bilateral symmetrical hypodense of lentiform nucleus and the head of caudate nucleus in 8 cases, and in 1 case only the lentiform nucleus were involved. 结果CT表现:两侧豆状核,尾状核头部同时出现对称性低密度病灶8例;尾状核头部低密度病灶呈椭圆形,仅豆状核出现对称性低密度病灶1例。
On the portal phase and delayed phase scans: 2 of 12 lesions turned to isodense of slightly hypodense, 10 lesions remained slightly hyperdense, central scar was found in 8 lesions, 2 of them showed no enhancement while the other six demon stated late enhancement. 门脉期及延迟期:2个等或略低密度,10个为略高密度,8例中央瘢痕中6例有延迟强化,2例无强化。