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The practical performance of algebraic reconstruction techniques (ART) for computed tomography (CT) depends heavily on the order in which the projections are considered. Complete orthogonalization, notwithstanding its theoretical justification, is not feasible because the computational time is prohibitive. The authors report here a scheme that yields the(More)
In a previous report we presented a novel ART technique with the projections arranged and accessed in a multilevel scheme (MLS) for efficient algebraic image reconstruction, but whether the scheme is still superior in real situations where the data are noisy is unknown. In this paper, we make a detailed comparison between MLS and the other two conventional(More)
BACKGROUND/AIMS Single nucleotide polymorphisms (SNPs) in Complement Factor H (CFH), HTRA1 and CX3CR1 are associated with age-related macular degeneration (AMD) in Caucasian population. We aimed to determine whether, and of what magnitude, these AMD susceptibility SNPs are associated with exudative AMD in Han Chinese. METHODS Exudative AMD cases and(More)
The placental 11beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2) serves as a functional barrier to protect the fetus from excessive exposure to high levels of maternal cortisol. There is evidence that placental 11beta-HSD2 is reduced in pregnancies complicated with intrauterine growth restriction (IUGR), but the relationship between the two is(More)
OBJECTIVE PAD-SEARCH was the first international study to investigate the prevalence of peripheral arterial disease (PAD) in Asian type 2 diabetic patients and to demonstrate the relationships between putative risk factors and PAD. SUBJECTS AND METHODS In total 6625 type 2 diabetic patients aged 50 and older were enrolled and determined ankle-brachial(More)
Fragments of 5' end and 3' end of the coat protein gene of a Chinese strain grapevine fanleaf virus (GFLV-Gh) were separately amplified through RT-PCR. The two products were cloned and ligated into a complete full-length coat protein gene via an inherent BgIII restriction site. The entire gene contains 1512 nucleotides which encode a 504 amino acids coat(More)
BACKGROUND Intravenous leiomyomatosis (IVL) is a rare tumor that is histologically benign but biologically malignant. Less than 200 cases of IVL have been reported, most of them were individual reports. METHODS Six patients with IVL involving the inferior vena cava were analyzed. RESULTS Three patients received one-stage operations and two received(More)
The present study was undertaken to determine (1) if hypoxia-induced down-regulation of placental 11beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2; encoded by HSD11B2 gene) activity and protein in human trophoblast cells during in vitro differentiation was mediated at the level of HSD11B2 gene transcription; and (2) whether the reduced placental(More)
BACKGROUND Invasive ductal carcinoma is the most common type of breast malignancy, with varying molecular features and resistance to treatment. Although CD44+/CD24- cells are believed to act as breast cancer stem cells and to be linked to poor prognosis in some patients, the association between these cells and tumor recurrence or metastasis in all or some(More)
BACKGROUND It is widely recognized that the diagnosis of parathyroid carcinoma (PC) is often difficult because of the overlap of characteristics between malignant and benign parathyroid tumors, especially at an early stage. Our study aimed to investigate the differential expression of Ki-67, galectin-3, fragile histidine triad (FHIT) gene, and parafibromin(More)