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Speckle is an unwanted noise in ultrasound images, and appears as returning echoes are coherently summed over the transducer surface. In Doppler applications, the total power of the received spectrum varies in a manner similar to speckle. This paper investigates the correlation of continuous-wave (CW) Doppler signals obtained from simultaneously transmitted carrier frequencies, when a slowly flowi
Study Type - Diagnostic (case series) Level of Evidence 4 What's known on the subject? and What does the study add? It is well known that CIS is a major risk factor for muscle-invasive bladder cancer and that this entity can be difficult to diagnose. Taking cold-cup mapping biopsies from different areas of the bladder (BMAP) is commonly used in patients at risk of harbouring CIS. The diagnostic ac
Abstract is not available
Most nuclear medicine clinicians use only visual assessment when interpreting regional cerebral blood flow (rCBF) from single-photon emission computed tomography (SPECT) images in clinical practice. The aims of this study were to develop a new, easy to use, automated method for quantification of rCBF-SPECT and to create normal values by using the method on a normal population. We developed a 3-dim
The function of the immune system requires coordinated expression and action of many genes and proteins. With the emergence of high throughput technologies it has become possible to target human immunity from a systems biology point of view. To perform systems biology studies with comparable results we need not just a reference gene and protein set but also useful and descriptive reference categor
Image Processing is rapidly expanding as a technique for object and defect analysis because of the high ease of its coupling to automation and IT solutions. Yet, issues with transferability of the measurement approaches and metrics currently used in mechanical systems often remain unsolved. Study reports on the developed approach for shape and defectiveness characterization by combining Delaunay t
Accurate accelerator mass spectrometry (AMS) measurements rely on standards with well-known isotopic ratios. For radiocarbon measurements, a number of standards with different properties are commercially available, of which the IAEA-C6 sucrose standard with a 14C value of 150.61 pMC is the most active. When analyzing biological samples resulting from studies using 14C-labeled substances, the activ
New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb(-1). We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later ti
BACKGROUND: Family members of persons with pre-dialysis chronic kidney disease may experience feelings of vulnerability and insecurity as the disease follows its course. Against this background, the aim of the present study was to explore empowerment in outpatient care as experienced by these family members. METHODS: An inductive approach for qualitative data analysis was chosen. The study sampl
The capacity of communities to reduce negative impacts of climate change on their lives and livelihoods is a function of socio-economic conditions, infrastructure, government accountability and institutional responsiveness and not the least social capital. Africa’s most densely populated region, the Lake Victoria basin (LVB), home to over 30 million people, is one example of a likely future climat
The aim of the study was to explore what adolescents with congenital heart disease (CHD) view as important in the preparation for the transfer to adult care. We performed interviews in four focus groups with adolescents (14–18 years old) at four university hospitals in Sweden. Data was analysed using qualitative content analysis. The analysis revealed one main category; Becoming a manager of the c
In this paper we calculate the limit of the $L^1$-means of certain weighted Poisson kernels in the unit disc and show that this limit is equal to $1$. Our result is in sharp contrast to a recent result by George F\"ulep who has shown that some related limit superiors are strictly greater than $1$. Limits of this type are of interest from the point of view of approximation theory.
The use of a label for locally produced products is seen as a good way of promoting these products in Söderslätt and, thereby, promoting regional development. The only common meaning of the concept ?local? is the reference to a geographical area, even though the size of the area differs. Local products are associated with characteristics such as environment, ethics, health, quality and support of
In this paper, we present an adaptive spectral projection based finite element method to numerically approximate the solution of the wave equation with memory. The adaptivity is not restricted to the mesh (hp-adaptivity), but it is also applied to the size of the computed spectrum (k-adaptivity). The meshes are refined using a residual based error estimator, while the size of the computed spectrum
Despite a long history and the vast number of applications demonstrated, very few market products incorporate acoustophoresis. Because a human operator must run and control a device during an experiment, most devices are limited to proof of concepts. On top of a possible detuning due to temperature changes, the human operator introduces a bias which reduces the reproducibility, performance and rel
Coastal fishing fleets are declining in many parts of Europe. In Sweden, this has left many traditional fishing harbours with no or very few active fishers. This might have effects on the marine tourism industry where the existence of commercial fishing is part of the visitors’ tourism experience. In this paper in-depth interviews with local representatives for the tourism sector are combined with
The European spruce bark beetle (Ips typographus L.) is a major disturbance agent in Norway spruce (Picea abies (L.) Karst) forests in Europe and it is estimated that a changing climate will result in more severe outbreaks in the future. To reduce the risk of large outbreaks it is important to have methods that enable early detection of bark beetle attacks to help forest managers to prevent popula
This paper deals with the estimation of the design force in self-tapping screws used as a reinforcement ofnotched cross laminated timber plates (CLT). With the reinforcement, apart from an increased load-carrying capacity, amore ductile behaviour of this detail can be achieved. An analytical model based on the Timoshenko Beam Theory wasdeveloped, enabling the estimation of the axial force in the r
Background: Patient adherence is defined as the extent to which a patient complies with medical or health advice. At present, there is a lack of reliable and valid measures specifically designed to measure adherence to internet-delivered behavioral interventions. Objective: The objective of this study was to develop and psychometrically evaluate a novel measure of adherence to guided internet-deli
