Purpose: The reconstruction of positron emission tomography images is a computationally intensive task which benefits from the use of increasingly complex physical models. Aiming to reduce the computational burden by means ...

Objectives: The aim of this study was to explore the diagnostic performance of dual-energy computed tomography perfusion (DE-CTP) at different energy levels. Methods: Patients with known or suspected coronary artery disease ...

Cognitive approaches in translation studies have long incorporated methods from other fields, including linguistics, psychology, and computer science. Despite their major contributions, such approaches are mostly uninformative ...

The correction of attenuation effects in Positron Emission Tomography (PET) imaging is fundamental to ob-tain a correct radiotracer distribution. However direct measurement of this attenuation map is not error-free and ...

The construction process of large scintillation cameras with continuous crystals is a complex problem affected by multiple variables, from the physical construction of the scintillation crystal to the dispersion in the ...

Image registration is a space-temporary correlation process that allows comparison and/or image matching. This process has value into medical area when it comes to compare images acquired by different modalities or in ...

The objective of the present study was to investigate the effects of chronic lead exposure on the mineral properties of alveolar bone. For this purpose, female Wistar rats (n = 8) were exposed to 1000 ppm lead acetate in ...

Alzheimer’s disease (AD) is a clinically heterogeneous neurodegenerative disease. Presentations of symptoms in individuals before the age of 65 years are classified as early-onset Alzheimer’s disease (EOAD). According to ...

We study a series of relations between physical parameters in coronal loops of the quiet Sun reconstructed by combining tomographic techniques and modeling of the coronal magnetic field. We use differential emission measure ...