A modified orthogonal-distance ray-tracer method applied to dual rotation PET systems.

a new projector, orthogonal-distance ray-tracer varying-full width at half maximum (OD-RT-VF), was developed to model a shift-variant elliptical point-spread function (PSF) response to improve the image quality (IQ) of a preclinical dual-rotation PET system.the OD-RT-VF projector models different FWHM values of the PSF in multiple directions, using half-height and half-width tube-of-response (ToR) values. The OD-RT-VF method's performance was evaluated against the original OD-RT method and a ToR model with constant response.

Precise positioning of gamma ray interactions in multiplexed pixelated scintillators using artificial neural networks.

. The positioning ofray interactions in positron emission tomography (PET) detectors is commonly made through the evaluation of the Anger logic flood histograms. machine learning techniques, leveraging features extracted from signal waveform, have demonstrated successful applications in addressing various challenges in PET instrumentation.

Empowering Nursing Students to Adopt and Embody Strengths-Based Nursing and Healthcare.

This paper presents an international academic partnership in teaching and research with two case studies. The cases explore the integration of Strengths-Based Nursing and Healthcare (SBNH) and SBNH-Leadership (SBNH-L) in nursing science programs. SBNH values and foundations were integrated within an undergraduate-level community health course in Canada and SBNH-L was introduced into a graduate-level program in Brazil.

New Enclosure for Medical Imaging of Zebrafish With Vital Signs Monitoring.

Lately, the use of zebrafish has gained increased interest in the scientific community as an animal model in preclinical research. However, there is a lack of imaging tools that ensure animal welfare during acquisition procedures. The use of functional imaging techniques, like Positron Emission Tomography (PET), in zebrafish is limited since it requires the animal to be alive, representing a higher instrumentation complexity when compared to morphological imaging systems.

Development of a New Integrated System for Vital Sign Monitoring in Small Animals.

Monitoring the vital signs of mice is an essential practice during imaging procedures to avoid populational losses and improve image quality. For this purpose, a system based on a set of devices (piezoelectric sensor, optical module and thermistor) able to detect the heart rate, respiratory rate, body temperature and arterial blood oxygen saturation (SpO2) in mice anesthetized with sevoflurane was implemented. Results were validated by comparison with the reported literature on similar anesthetics.