BACKGROUND Ventilation/perfusion single-emission photon CT (V/P-SPECT) is widely used to detect pulmonary embolism (PE). Any pathological deficit on P-SPECT with a corresponding unremarkable V-SPECT is considered an embolism. This means that a deficit on P-SPECT with a corresponding deficit on the ventilation scan correlates with other lung pathologies such as pneumonia, bullous emphysema or tu...

Equipment used in the construction domain is often hired in order to reduce cost and maintenance overhead. The cost of hire is dependent on the time period involved and does not take into account the actual use equipment has received. This paper presents our initial investigation into how physical objects augmented with sensing and communication technologies can measure use in order to enable n...

AIM OF THE STUDY To use different beam arrangements and numbers to plan intensity-modulated radiation therapy (IMRT) and investigate their effects on low and high radiation doses delivered to the functional lung, in order to reduce radiation-induced lung damage. MATERIAL AND METHODS Ten patients with stage I-III non-small cell lung carcinoma (NSCLC) underwent IMRT. Beam arrangements were sele...

OBJECTIVES IQ-SPECT is an advanced high-speed SPECT modality for myocardial perfusion imaging (MPI), which uses a multi-focus fan beam collimator with resolution recovery reconstruction. The aim of this study was to compare IQ-SPECT with conventional SPECT in terms of performance, based on standard clinical protocols. In addition, we examined the concordance between conventional and IQ_SPECT in...

In the context of a standard equilibrium matching framework, this paper considers how a duration dependent unemployment insurance (UI) system affects the dynamics of unemployment and wages in an economy subject to stochastic job-destruction shocks. It establishes that re-entitlement e¤ects induced by a …nite duration UI program generate intertemporal transfers from …rms that hire in future boom...

I develop and estimate a model of expertise that weighs the tradeoffs of delegating loan decisions to loan officers. While loan officers can screen soft information, their preferences may distort decisions away from the lender’s objective. The model features rich heterogeneity (e.g. risk aversion, willingness to exert effort, and overconfidence) and addresses possible endogeneity with a natural...

A prominent theory of wage rigidity claims that a social norm against underbidding may prevent wages from falling to market clearing levels. This social norm may therefore cause downwardly rigid wages and involuntary unemployment. Recently performed questionnaire studies have thrown doubt on the conjecture that there is a social norm against underbidding. In this paper we experimentally show th...