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    A statistical tool that is popular for describing diagnostic accuracy is the receiver operating characteristic(ROC)curve.
    为了描述诊断的准确性,越来越普遍使用的统计工具是ROC(Receiver Operating Characteristic)曲线。
    Results:The total accurate diagnostic rate was 98%(110/112).
    结果:直肠超声对直肠壁及其周围疾病的诊断准确性高达98%(110//112),明显高于指诊与临床初步诊断的89%(100/112)(P<0.01)。
    DSA and US examinations were necessary for atypical patients to improve the diagnostic capability of CT.
    对CT表现不典型病例,结合DSA或超声检查(US)可提高诊断准确性
    Combining with MR axial pictures and MRH source images, the accuracy of MRCP and MRU for demonstrating the cause of obstruction was 91.4% and 80.8%, respectively.
    结合MR断面图像与MRH原始影像 ,MRCP对胆道梗阻的定性诊断准确性为 91.4% ,MRU对尿路梗阻的定性诊断准确性为 80 .8%。
    (2) Taking negative and positive cases as judgement, CE MRA showed higher sensitivity, specificity, and diagnostic accuracy than Gated 2D TOF MRA (100% versus 95 6%, 100% versus 78.3%, 100% versus 89.4%, respectively).
    (2 )以正常和狭窄或闭塞为判断点时 ,CEMRA较Gated 2DTOFMRA的敏感性、特异性和诊断准确性高 ,分别为1 0 0 %、1 0 0 %、1 0 0 %与 95 6%、78 3 %、89 4%。
    (3) Taking 70% stenosis as judgement, CE MRA also showed higher sensitivity, specificity, and diagnostic accuracy than Gated 2D TOF MRA (100% versus 95 2%, 97.8% versus 93.6%, 98.5% versus 94.1%, respectively).
    (3 )以 70 %狭窄为判断点时 ,CEMRA与Gated 2DTOFMRA的敏感性、特异性和诊断准确性分别为 1 0 0 %、97 8%、98 5%与 95 2 %、93 6%、94 1 %。 Gated 2DTOFMRA与DSA比较的 χ2 =3 0 0 0 ,P =0 0 83 ;
    Condusion: Enhancement FLAIR pulse sequence is superior to enhanced T 1WI in detecting superficial lesions such as cortex or subcortex infarct.
    结论 :增强FLAIR在检查脑表面病变 ,如皮质或皮质下梗塞 ,诊断准确性高于增强T1 WI。
    Objectve To evaluate the value of imaging of turbo spin echo, true fast imaging with steady - state precession and half- Fourier acquisition shot turbo SE, and The manifestation of abdominal in 93 - patients diseases proven by surgical operation and siqnsand symproms in TSE T2WI、 True FISP T2WI and HASTE T2WI was reviewed, compared in terms of pictures quality including contreast - noise ration, signalnoise ratio and of lesion detectable rate.
    目的评价三种不同快速T_2WI技术图像质量及对腹腔解剖的显示情况及对疾病诊断的准确性。 方法复习经手术或临床证实的93例腹腔内病变患者在TSE T_2WI、True FISP T_2WI、HASTE T_2WI上表现,比较不同成像技术图像质量(包括病灶与正常组织的对比信噪比、解剖结构显示)及病变检出率。
    Conclusion B-FFE could display cholangiopancreatic system satisfactory, combining with MRCP and routine MRI could improve the diagnostic accuracy in biliary disease.
    结论B-FFE序列能满意显示胰胆管系统,与MRCP和传统MRI相结合,可提高胆系疾病的诊断准确性
    Top of them is the ultrasonography (US) . This study was undertaken to analyse the sonographic characteristics and the hemodynamic changes of facial and cervical lymphangiomas.
    本研究旨在总结小儿面颈部淋巴管瘤的声像图特征和血流动力学变化特点,证实B型超声(B-mode ultrasound, B-US)结合CDFI有助于提高诊断的准确性。
    Meanwhile it enhances the accuracy and reliability of the diagnosis by affording sufficient reference information database.
    同时提供充分的参考信息库,提高诊断的准确性和可靠性。
    In clinical diagnosis, data mining approaches can be adopted to construct prediction models from clinical and laboratory data. These models can improve diagnostic accuracy and provide evidences and guidance for decision making.
    数据挖掘是面向应用的技术,在临床医学诊断中,应用数据挖掘技术的原理,通过对大量诊断数据的挖掘来建立预测模型,可以作为决策时的依据和指南,对临床医学作辅助诊断,从而提高临床诊断的准确性。
    The development of medical image technology advances the request for the post-processing, while image enhancement, as an important technology of the image post-processing, improves the quality of medical images and the validity of diagnosis.
    医学影像技术的发展,对后处理的要求也不断提高,作为后处理重要技术的图像增强,可以有效地提高医学影像的观测质量以及诊断的准确性。
    It can improve the diagnosis of variable heart disease with the help of ultrasonic contrast examination.
    配合声学造影可提高复杂性先心病的诊断准确性
    After analysing waves, part (1)and(2)make primary diagnosis which may be revised by part(3)if the probability of patient's symptoms in conformity to typical symptoms is less than a threshold programed.
    其诊断方式为由两种波形分析的结果作出初步诊断,然后经症状、体征印证作必要的修正,诊断准确性较高。
    The result showed accurate diagnostic rates of CDFI were apparently higher than that of 2DE.
    结果显示CDFI诊断符合率明显高于二维超声,两者间显著性差异(P<0.05)。 表明了CDFI对该病具有特异性诊断价值,提高了诊断准确性
    To identify the accuracy and reliability of magnetic resonance angiography (MRA) in evaluating patients with lower peripheral vascular disease.
    本文目的是确定二维TOF法磁共振血流成像对下肢周围血管性疾病诊断的准确性和可靠性。
 

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