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find Keyword "CT" 5 results
  • On the Value of Esphagogram and CT Scan after Esphagogram in Diagnostic of Pyriform Sinus Fistula

    摘要:目的:通过食管吞钡造影及造影后CT平扫检查提高梨状窝瘘的诊断率。方法:平卧位左、右、前、后斜位和头低足高位食管吞钡后透视观察有无钡剂外漏后,行CT平扫检查。扫描范围上起口咽部,下至胸骨上窝,层距厚3 mm。扫描后图像作多层面重建处理。结果:透视下见到瘘管3例,另3例经CT多层面重建隐约见到瘘管,但14例均可见漏出的钡剂滞留影,可判断瘘管的存在。结论:食管吞钡造影及造影后CT平扫可提高对梨状窝瘘诊断的敏感性和诊断率。Abstract: Objective: To improve the diagnosis rate of the pyriform sinus fistula by means of esphagogram and CT scan after esphagogram. Methods:To observe whether there is the leakage of barium by Xray check after barium swallowed in the five positions of body, followed by CT scan. The scanning ranges from oropharyngeal to Waterloo on sternum. The thickness is 3mm. The image is dealt with multidimensional reconstruction after the scan. Results:Among fourteen cases, the fistula can be seen in three, and be indistinctly seen after the multidimensional reconstruction of CT scan in the other three ones. All The fourteen cases show the trace of the leakage of barium, which helps to prove the existence of pyriform sinus fistula. Conclusions: Esphagogram and CT scan after esphagogram contribute the sensitivity of the diagnosis of pyriform sinus fistula, and improve the diagnosis rate.

    Release date:2016-08-26 03:57 Export PDF Favorites Scan
  • CT Diagnosis of Oropharygeal NonHodgkin’s Lymphoma

    目的:分析口咽部B细胞来源非霍奇金淋巴瘤(NHL)的CT表现、特征,初步探讨不同病理类型B细胞来源NHL的CT表现特点,为临床诊断和治疗提供更为准确的信息。方法:对18例经病理证实的口咽部B细胞来源非霍奇金淋巴瘤的CT表现进行回顾性分析。结果:18例中,弥漫大B细胞淋巴瘤13例,占72.2%(13/18),滤泡性淋巴瘤3例,占16.7%(3/18),套细胞淋巴瘤1例,占5.6%(1/18),结外边缘区淋巴瘤(MALT淋巴瘤)1例,占5.6%(1/18)。病变分布为:扁桃体NHL9例(弥漫大B细胞淋巴瘤8例、套细胞淋巴瘤1例);舌根8例(弥漫大B细胞淋巴瘤5例、滤泡性淋巴瘤3例);软腭1例,为结外边缘区淋巴瘤(MALT淋巴瘤)。18例病变均表现为肿块型。同时有淋巴结受累者12例(66.7%),其中双侧受累者3例。结论:口咽B细胞来源NHL多发生于扁桃体及舌根。病理类型以弥漫大B细胞淋巴瘤为主,主要表现为肿块。 CT对于B细胞来源NHL的鉴别诊断和病变范围的判断具有重要作用。

    Release date:2016-09-08 09:54 Export PDF Favorites Scan
  • Frontal Sinus Drainage Pathway and Associated Nasal Structures: MDCT Evaluation

    目的:运用多排螺旋CT多层面重组(MPR)技术评价额窦引流通道(FSDP),为前组鼻副窦病变的诊断和鼻内窥镜手术提供实用的影像学信息。方法:回顾分析2008年8~10月在华西医院行鼻部检查50例患者的CT图像资料,其中男24例,女26例,年龄16~62岁,平均37岁。所有病例均行薄层螺旋CT高分辨扫描,扫描平面从硬腭至额窦上缘,准直0.75~1 mm。冠状和平行于筛漏斗方向斜矢状重建,层厚及层距均为1 mm。结果:斜矢状MPR上,共90侧(90.0%)FSDP由上、下两部构成。上部较宽,呈锥形68侧(75.6%),不规则形15侧(16.7%),卵圆形7侧(7.8%);下部窄细,为筛漏斗者36侧(40.0%),中鼻道者53侧(58.9%)。10侧(10.0%)不能分辨FDSP上下两部。冠状MPR上,共见钩突99侧,1侧缺如。钩突附于颅底35侧(35.4%),筛漏斗为FSDP下部;附于筛骨纸板63侧(63.6%),中鼻道为FSDP下部;附于中鼻甲1侧(1.0%),筛漏斗为FSDP下部。钩突气化3侧,其中1侧伴中鼻道变窄。筛泡增大32侧(32.0%),其中8侧(25.0%)伴有筛漏斗和半月裂变窄。双侧钩突附着部位相同者41例(82.0%),不同者8例(16.0%)。结论:多排螺旋CT能良好显示FSDP的结构和形态,为该部位病变的临床诊断和术前计划制定提供有价值的解剖信息。

    Release date:2016-09-08 09:54 Export PDF Favorites Scan
  • Imaging Findings and Differential Diagnosis of Olfactory Groove Meningiomas

    目的:探讨嗅沟脑膜瘤的影像学表现与病理组织学之间的相关关系及其鉴别诊断。方法:对11例经手术及病理证实为嗅沟脑膜瘤的患者进行回顾性分析。男5例,女6例,年龄29~59岁,平均48岁。行CT检查3例,MRI检查8例,均为增强扫描。分析CT、MRI影像特征,并与手术、病理结果对照。结果:瘤灶起源于颅前窝嗅沟,多数密度或信号均匀,边界清楚,均匀增强;少数不均匀增强,大部分病例出现脑膜尾征,少数伴钙化、坏死、囊变。邻近颅骨受累时引起骨质增生或受侵。结论:起源于嗅沟的脑膜瘤均具有典型的影像学表现特征。嗅沟骨质及其脑膜影像改变的显示,对瘤灶起源具有重要的定位、定性诊断价值。MRI优于CT,但CT对钙化和骨质改变显示优于MRI。

    Release date:2016-09-08 10:00 Export PDF Favorites Scan
  • Analysis of the Radiological Performance of Pelvic Fracture in Wenchuan Earthquake

    目的:分析汶川大地震中伤员骨盆骨折的发生部位及骨折类型。方法:对地震发生后近2个月内先后送至四川大学华西医院治疗的95例骨盆骨折伤员,按放射学检查结果进行骨折部位及类型分析。结果:95例伤员共发生133个部位的骨折。按骨折部位分类:髂骨22个(16.6%),坐骨10个(7.5%),耻骨81个(60.9%),髋臼18个(13.5%),骶尾骨2个(1.5%)。按骨折类型分类:斜行骨折71个(53.4%),粉碎性骨折43个(32.3%),线性骨折11个(8.3%),横行骨折5个(3.7%),嵌插骨折3个(2.3%)。结论:地震造成骨盆骨折部位以耻骨为主,类型以斜行骨折为主。对骨盆骨折伤员,X线及CT检查相结合能为临床提供更好的影像诊断价值。

    Release date:2016-09-08 10:00 Export PDF Favorites Scan
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