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532,164
result(s) for
"Pets"
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Do you really want a turtle?
by
Heos, Bridget, author
,
Longhi, Katya, illustrator
,
Heos, Bridget. Do you really want a pet?
in
Turtles as pets Juvenile literature.
,
Pets Juvenile literature.
,
Turtles as pets.
2015
\"Several turtles (and the narrator) teach a young girl the responsibility--and the joys--of caring for a pet turtle. Includes \"Is this pet right for me?\" quiz.\"-- Provided by publisher.
Do you really want a lizard?
by
Heos, Bridget, author
,
Longhi, Katya, illustrator
,
Heos, Bridget. Do you really want a pet?
in
Lizards as pets Juvenile literature.
,
Pets Juvenile literature.
,
Lizards as pets.
2016
\"Several lizards (and the narrator) teach a young girl the responsibility--and the joys--of caring for a pet lizard. Includes 'Is this pet right for me?' quiz.\"-- Provided by publisher.
I wish I had a pet
2014
An introduction to the joys and responsibilities of pet ownership via the efforts of several mice who're trying to decide which animal might be right for them.
It's time for bubble puppy!
2012
Gil sees a puppy and wants to adopt it. In class Mr. Grouper, the teacher, talks to his students about the responsibilies of being a pet owner. Gil is disappointed when he returns and all the puppies have been adopted. So why is he given a bowl and a leash?
Optimization of temporal sampling for ^sup 82^rubidium PET myocardial blood flow quantification
2017
Suboptimal temporal sampling of left ventricular (LV) blood pool and tissue time-activity curves (TACs) may introduce bias and increased variability in estimates of myocardial blood flow (MBF) and flow reserve (MFR) from dynamic PET myocardial perfusion images. We aimed to optimize temporal sampling for estimation of MBF and MFR. Twenty-four normal volunteers and 32 patients underwent dynamic stress/rest rubidium-82 chloride (82Rb) PET imaging. Fine temporal sampling was used to estimate the full width at half maximum (FWHM) of the LV blood pool TAC. Fourier analysis was used to determine the longest sampling interval, T S, as a function of FWHM, which preserved the information content of the blood phase. Dynamic datasets were reconstructed with frame durations varying from 2 to 20 seconds over the first 2 minutes for the blood phase and 30 to 120 seconds for the tissue phase. The LV blood pool and tissue TACs were sampled using regions of interest (ROI) and fit to a compartment model for quantification of MBF and MFR. The effects of temporal sampling on MBF and MFR were evaluated using clinical data and simulations. T S increased linearly with input function FWHM (R = 0.93). Increasing the blood phase frame duration from 5 to 15 seconds resulted in MBF and MFR biases of 6-12% and increased variability of 14-24%. Frame durations <5 seconds had biases of less than 5% for both MBF and MFR values. Increasing the tissue phase frame durations from 30 to 120 seconds resulted in <5% biases. A two-phase framing of dynamic 82Rb PET images with frame durations of 5 seconds (blood phase) and 120 seconds (tissue phase) optimally samples the blood pool TAC for modern 3D PET systems. Una subóptima adquisición temporal del contenido sanguíneo del ventrículo izquierdo así como de las curvas de actividad tiempo (CAT) tisulares pueden introducir sesgos e incremento de la variabilidad en las estimaciones del flujo sanguíneo miocárdico (FSM) y la reserva de flujo (RFM) a partir de las imágenes dinámicas de perfusión miocárdica con PET. Nuestro objetivo fue optimizar la adquisición temporal para el cálculo de FSM y RFM. 24 voluntarios normales y 32 pacientes se sometieron a un estudio PET con Cloruro de Rubidio-82 (82Rb) y protocolo estrés/reposo. Se utilizó una cuidadosa adquisición temporal para estimar el “full width at half máximum” (FWHM) de la CAT del contenido sanguíneo ventricular izquierdo. Se utilizó el análisis de Fourier para determinar el intervalo de adquisición más largo, IA, en función del FWHM, que preservó el contenido informativo de la fase sanguínea. Los conjuntos de datos dinámicos se reconstruyeron con duraciones de los cuadros que variaron de 2 a 20 segundos durante los primeros dos minutos para la fase sanguínea y de 30 a 120 segundos para la fase tisular. Las CAT tisular y del contenido sanguíneo ventricular se obtuvieron usando regiones de interés (ROI, por sus siglas en ingles) y se ajustaron a un modelo compartamental para la cuantificación de FSM y RFM. Los efectos de la adquisición temporal sobre el FSM y RFM se evaluaron utilizando datos clínicos y simulaciones. El IA aumentó linealmente con el aporte de la función FWHM (R=0.93). Aumentando la duración de los cuadros de la fase sanguínea de 5 a 15 segundos se incremento el sesgo del FSM y RFM en la fase de estrés en un 10% así como la variabilidad en el 20-25%. La duración de los cuadros menor a 5 segundos tuvo sesgos de menos del 5% para los valores de FSM y RFM. Aumentando la duración de los cuadros de la fase tisular de 30 a 120 segundos resultó en sesgos menores a 2%. Realizar las 2 fases del PET con 82Rb con duraciones de los cuadros de 5 segundos (fase sanguínea) y 120 segundos (fase tisular) es optimo para adquirir la CAT del contenido sanguíneo ventricular en los nuevos sistemas de PET 3D.
Journal Article
This moose belongs to me
by
Jeffers, Oliver
in
Moose as pets Juvenile fiction.
,
Pets Juvenile fiction.
,
Moose as pets Fiction.
2012
A young boy learns that moose do not always follow the rules of proper pet behavior.