Quality control (QC) in medical imaging is an ongoing process and not just a series of infrequent evaluations of medical imaging equipment. The QC process involves designing and implementing a QC program, collecting and analyzing data, investigating results that are outside the acceptance levels for the QC program, and taking corrective action to bring these results back to an acceptable level....

Daniel K Tisi, MSc, David H Burns, PhD, 2,4 Gary W Luskey, MD, 3,4 Kristine G Koski, PhD 1,4 1 McGill University, School of Dietetics and Human Nutrition, Montreal, QC, Canada; 2 McGill University, Department of Chemistry, Montreal, QC, Canada; 3 St Mary’s Hospital Centre, Division of Perinatal/Fetal Medicine, Montreal, QC, Canada; and 4 McGill University, Faculty of Medicine, Montreal, QC, Can...

It has been well-known that the class of quasi-cyclic (QC) codes contain many good codes. In this paper, a method to conduct a computer search for binary 2-generator QC codes is presented, and a large number of good 2-generator QC codes have been obtained. 5 new binary QC codes that improve the lower bounds on minimum distance are presented. Furthermore, with new 2-generator QC codes and Constr...

BACKGROUND Retinal optical coherence tomography (OCT) is an imaging biomarker for neurodegeneration in multiple sclerosis (MS). In order to become validated as an outcome measure in multicenter studies, reliable quality control (QC) criteria with high inter-rater agreement are required. METHODS/PRINCIPAL FINDINGS A prospective multicentre study on developing consensus QC criteria for retinal ...

Despite quercetin (QC) promising features for cancer therapy, low solubility, poor permeability, and short biological half-life time significantly confine its application in therapy. In this study, a novel approach is developed to improve loading efficiency attain sustained-release concurrently. direction, hydrogel nanocomposite of agarose (AG)-polyvinylpyrrolidone (PVP)-hydroxyapatite (HAp) wa...

The existence of a quiescent core (QC) in the center turbulent channel flows was demonstrated recent experimental and numerical studies. QC-region, which is characterized by relatively uniform velocity magnitude weak turbulence levels, occupies about 40% cross-section at Reynolds numbers Re? ranging from 1000 to 4000. influence QC region its boundaries on transport accumulation inertial particl...

with general C nonlinearity f . Under an explicit condition on f and c > 0, there exists a solution in the energy space H of (0.1) of the type u(t, x) = Qc(x − x0 − ct), called soliton. In this paper, under general assumptions on f and Qc, we prove that the family of soliton solutions around Qc is asymptotically stable in some local sense in H , i.e. if u(t) is close to Qc (for all t ≥ 0), then...

An amplifying quantum-cascade (QC) metasurface, the key component of QC vertical-external-cavity surface-emitting-laser (VECSEL), is studied as a function injected current density using reflection-mode terahertz time domain spectroscopy. Nearly perfect absorption measured at zero bias, which associated with transition from weak to strong coupling condition between metasurface resonance and an i...

A novel quinoline-coumarin (QC) fluoroionophore conjugated by means of a triazolyl-pyrrolidinyl linker exhibits differential dual selectivity for Zn(2+) and Al(3+) in mixed media. QC acts as a turn on fluorescence sensor for Zn(2+) while exhibiting overall ratiometric selectivity for Al(3+) in aqueous media. Moreover, QC exhibited preferential second mode of selectivity for Al(3+) as it ratiome...