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Since the first report of SARS-CoV-2 virus in Wuhan, China in December 2019, a global outbreak of Corona Virus Disease 2019 (COVID-19) pandemic has been aroused. In the prevention of this disease, accurate diagnosis of COVID-19 is the center of the problem. However, due to the limitation of detection technology, the test results are impossible to be totally free from pseudo-positive or -negative.
View Article and Find Full Text PDFPrevalence of spinal meningeal cyst in the sacrum.
Neurol Med Chir (Tokyo)
January 2014
Department of Neurosurgery, Jikei University School of Medicine, Tokyo, Japan.
Spinal meningeal cysts in the sacrum (SMC) are known to be occasionally symptomatic with low back pain as well as leg pain, but no distinct prevalence of this pathological entity including asymptomatic lesions has been described. This prospective study investigated the prevalence of SMCs based on magnetic resonance (MR) myelography in 102 consecutive Japanese women with gynecological problems, who underwent pelvic conventional MR imaging. Ten of 102 patients were suspected of being positive for SMC (9.
View Article and Find Full Text PDFImproving Web image search by bag-based reranking.
IEEE Trans Image Process
November 2011
School of Computer Engineering, Nanyang Technological University, Singapore.
Given a textual query in traditional text-based image retrieval (TBIR), relevant images are to be reranked using visual features after the initial text-based search. In this paper, we propose a new bag-based reranking framework for large-scale TBIR. Specifically, we first cluster relevant images using both textual and visual features.
View Article and Find Full Text PDFDesign of allele-specific primers and detection of the human ABO genotyping to avoid the pseudopositive problem.
Electrophoresis
November 2008
Advanced Technology Research Laboratories, Matsushita Electric Industrial Co. Ltd., Kyoto, Japan.
PCR experiments using DNA primers forming mismatch pairing with template lambda DNA at the 3' end were carried out in order to develop allele-specific primers capable of detecting SNP in genomes without generating pseudopositive amplification products, and thus avoiding the so-called pseudopositive problem. Detectable amounts of PCR products were obtained when primers forming a single or two mismatch pairings at the 3' end were used. In particular, 3' terminal A/C or T/C (primer/template) mismatches tended to allow PCR amplification to proceed, resulting in pseudopositive results in many cases.
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