假阳性
- 名false-positive;false positive
![假阳性](../cache/1166037.jpg)
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肝癌螺旋CT双期增强扫描影像学特征及CT假阳性病灶的病理分析
Helical Double-phase CT Scan Imaging Features of Hepatocellular Carcinoma and Pathology of False-positive Lesions
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假阳性的问题导致螺旋CT扫描应用的局限性,应理性的对待。
The problem of false-positive results in helical CT scanning is limited and can be rationally managed .
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但对扫描结果的解读也有可能出错,而且在所有乳房X光检查结果中,有一小部分要么是假阳性(将健康病人误诊为患有癌症),要么是假阴性(在疾病的传播过程中,没有诊断出疾病)。
But interpreting the scans leaves room for error , and a small percentage of all mammograms either return a false positive - misdiagnosing a healthy patient as having cancer - or false negative - missing the disease as it spreads .
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菌落PCR法鉴定的重组率偏高,存在假阳性现象。
A high frequency of false-positives appeared in colony PCR identification .
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MRI诊断结果:真阳性数49个,真阴性数22个,假阳性数2个,假阴性数3个,准确性是93.4%,敏感性是94.2%,特异性是91.7%。
MRI diagnosis 49 true-positive , 22 true-negative , 2 false-positive and 3 false-negative .
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目的:了解MRI诊断腰椎间盘突出症的假阳性的问题。
Objectives : To analyze MRI examine false positive result of lumbar disc protrusion .
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套式PCR检测体系扩增效率的分析及对假阳性的控制
Analysis of amplification efficiency of PCR detection system and control of false positive contamination
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结果:DNA测序可排除PCR产物的假阳性。
Results : Our study indicated that pseudopositive results of PCR products were identified by DNA sequencing .
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需要进一步研究PET扫描这种假阳性结果发生机制。
Further studies for mechanism of such false positive results on PET scan are warranted .
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为排除一些假阳性,每个逆转录PCR反应都重复一次。
All the RT - PCR were done twice to minimize false positive differentially expressed bands .
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平板运动试验ST段压低恢复时期的假阳性表现
Analysis of False Positive on Treadmill Exercise Testing ST Segment Depression Recover Time
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目的:克服一次性PCR假阳性及非特异性条带干扰。
Objective : To overcome the interruption of false positive and undesirable nonspecific banding with single PCR .
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酶联免疫法检测HBsAg假阳性原因分析
Analysis of False Positive by Euzymelinked Immunosorbent Assay to Detect HBsAg
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但对弱weak阳性的患者要注意追踪,排除假阳性。
And it was necessary to pay attention to trace the patients whose antibodies were weak positive for eliminating false positive .
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患者的ELISA一步法检测乙型肝炎抗-HBc、抗-HBe存在假阳性
Study of false positive reaction in determination of serum anti-HBc and anti-HBe by one-step ELISA
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MiniVITAL全自动血培养仪假阳性/假阴性结果分析
Evaluation of false positive and false negative results for mini VITAL automated blood culture system
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用该方法对人类基因组DNA、人类巨细胞病毒(HCMV)和大肠埃希菌DNA以及其他型别的HPV进行检测,均未见假阳性结果产生。
There was no false-positive result when it was used to detect human genome DNA , HCMV , E.
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同时也因为受到生物细胞或脱氧核糖核酸(DNA)污染及当前分子生物技术的局限,可能导致出现假阳性或假阴性的测试结果。
Moreover , contamination from biological cell or DNA and the inherent limitation of the latest molecular technology might give false positive and false negative test results .
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另外,目前的检测试剂在低危人群中的筛查还会出现假阳性的结果,所以HCV抗体检测试剂仍然不够完善。
In addition , these assays are prone to false-positive results , especially noticeable in low-risk populations .
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酶免法检测HBeAg假阳性原因探讨
Discussion on Causes of HBeAg False Positive Reaction Detected by Enzyme Immunoassay
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应用反Northern杂交去除假阳性,对真阳性的表达序列标签(EST)进行克隆、测序及同源性比较。
Reverse Northern blotting was employed to eliminate the false positive ESTs . The true positive EST were cloned and sequenced .
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虽然非伤寒患儿肥达反应可呈假阳性反应,但O、H抗体凝集效价极少达到1∶800。
Although non typhoidal febrile children manifested false positive Widal test , agglutinin level at titre of 1 ∶ 800 was only found in a few patients .
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通过ReverseNorthern鉴定,去除假阳性,对阳性克隆进行测序、BLAST比较、PCR鉴定及功能分析。
Screening the false positive recombination by reverse northern . The positive clones were used to sequence , BLAST analysis , PCR identify and function analysis .
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结论抗HAV-IgM阳性的确定应依据临床症状、病史、年龄及RF水平来综合判定以降低假阳性。
Conclusions Clinical symptom , disease history , age and the level of RF are useful for the judgment of anti-HAV IgM positive .
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但是,PSA的低特异性常常出现大量的假阳性和假阴性结果,影响临床判断。
However , low specificity of serum PSA leads to many false-positive and false-negative results and clinical uncertainty .
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结果表明,SSH分析共获得151个阳性克隆,反向Northern杂交表明,其中11个为假阳性。
The result showed that SSH discovered 151 positive colonies , of which 11 colonies were false positive confirmed by reverse Northern blot .
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次之为CHr<28·0pg/L,诊断IDA的假阳性率、假阴性率分别为10·4%和0%。
Its false positive ratio and false negative ratio were 9.2 % and 0 respectively .
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SARS-CoV抗体实验诊断中的假阳性原因分析
Analysis of false-positive associated with antibody tests for SARS-CoV
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良性乳腺病40例,CA15-3值9.6±5.8U/ml,假阳性率0%。
In 40 patients with benign breast diseases the serum level was 9.6 ± 5.8 u / ml with a false positive rate of 0 % .
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SEAj组的假阳性率为1.2%,MSA组则未出现假阳性。
There was 1.2 % false positive rate in normal serum with SEAj , but no positive false reaction was detected with MSA .