Abstract
This paper explains that Positron Emission Tomography (PET), an
imaging technique, allows clinicians to localize safely and monitor accurately the activity of areas in the normal human brain during specific mental tasks. The author points out that the traditional methods of research, such as experiments in memorizing and observation of individuals who had suffered localized brain damage, have been facilitated by innovative methodologies, such as positron emission tomography, that connect human behavior to specific brain structures and functions. The paper relates that the research methodology will be a critical review of the scholarly and relevant literature, followed by a qualitative and quantitative analysis of how partnership between cognitive scientists and neuroscientists can be created and improved based on the technique's demonstrated efficacy in various clinical settings. Color illustrations.

Table of Contents
Introduction
Statement of the Problem
Purpose of Study
Importance of Study
Review of Related Literature
Background and Overview
How Positron Emission Tomography Works.
Figure 1. Typical Positron Emission Tomography Device, Clinician and Patient
Radionuclides Used in PET
Figure 2. PET Scan of Damaged Human Brain
Methodology
Data-gathering Method and Database of Study

From the Paper
"PET provides clinicians with a functional brain-imaging technique to identify brain regions activated in motor, sensory, cognitive, and emotional processes. "PET is based on a simple principle: a radioactive isotope that emits [[Beta].sup.+] particles (i.e., positrons, with a mass equal to an electron but with a positive electrical charge) is artificially integrated into a biological molecule and then injected intravenously." In the various PET applications, a chemical compound that is "labeled" with a short-lived, positron-emitting radionuclide (either carbon, oxygen, nitrogen, or fluorine) is injected into the body. The activity of such a radiopharmaceutical is then measured quantitatively throughout the target organs through the use of photomultiplier-scintillator detectors."

Tags:brain, functions, tasks, literature, efficacy

Abstract
This paper examines how nuclear medicine is a medical specialty that involves the use of radioactive isotopes in the diagnosis and treatment of disease. It looks at how positron emission tomography (PET) imaging is used extensively as diagnostic tool in the U.S. and Europe, but has limited availability in the U.K. It shows how the information obtained from these examinations can differentiate between different organs without the need for the patient to undergo surgical procedures. It also examines how, despite the long history of PET development, the costs and effectiveness of its use in routine clinical practice remain unknown. It reviews the relevant literature to determine whether PET imaging should be used more extensively in the U.K. instead of conventional nuclear medicine imaging.

From the Paper
"These researchers report that despite the long history of PET development, the costs and effectiveness of its use in routine clinical practice remain virtually unknown. However, what is known is that the bottom line for these and other advances in medical technology is clinician and patient accessibility. According to Michael Johns, "Physicians who do not have access to or choose not to utilize cutting-edge technologies could potentially limit the care provided to their patients. But for many in the developing world, the cost of new equipment and materials continues to be prohibitive. Even in the West, both public and private insurance agencies take into account the cost of a test or therapy before deciding whether to pay for it? (2001, 132)."

Tags:imaging, isotope, medicine, mri, nuclear, pet, scanning

Abstract
This paper examines the technique of positron emission tomography, a technique used for imaging brain activity by measuring the flow of blood containing radioactive atoms that emit positrons. It describes the uses of PET scanning as a research tool and in the diagnosis of brain injuries. It also compares PET to other similar methods such as MRI scanning, x-raying and CT scanning.

From the Paper
"In particular, PET has been used with great success in the study of which parts of the human brain are involved in language. With the assistance of positron emission tomography, studies have shown striking evidence that there are several independent regions of the brain involved in language. Among these areas that are crucial for language and speech are Wernicke's and Broca's regions. Due to the use of these non-invasive techniques (PET, MRI etc.) we now know that these regions are significantly spread out and are not located near the conventional language regions. We can see in scans from patients that different regions of the brain are used for specific tasks. Eg. a patient hearing words, reading words and seeing words uses very different parts of the brain for each task. (Delcomyn; 1998)."

Tags:ct, blood, xray, radioactive, atoms, scan

Abstract
This paper explains that Positron Emission Tomography (PET) scanning is an advanced imaging technique that can differentiate between malignant lesions and benign lesions in almost every process in cancer diagnosis, staging and treatment because PET is more sensitive than CT scanning or Magnetic Resonance Imaging (MRI) techniques. The author explains that for PET scanning, the patient is injected with positron emitting radionuclides and placed in a tube and surrounded by a ring of detectors; when one of these high-energy photon rays is detected, the source location can be determined and mapped by a specialized software package. The paper relates that, after radiation and surgery there is considerable damage to surrounding tissue; therefore, it is often difficult to distinguish living cancer cells from morphological changes caused by surgery or tissue death caused by radiation; however, because dead tissue and cancer cells have different glucose metabolism rates, they are easy to distinguish by PET imaging.

Table of Contents
Improving Outcomes for Radiation Therapy
How PET Scanning Works
Radiation Therapy
Using PET to Analyze the Effectiveness of Radiation Treatments

From the Paper
"Because PET scanning is based on glucose levels, it is important that these be controlled prior to the scan. Patients are usually told to fast for 4-6 hours prior to the test. However, they can drink water and take any medications that they are on. The goal is to get the base glucose level lower than 160 mg/dL before administering the FDG or other isotope. Patients with diabetes should continue their routine of eating small meals and taking their insulin. Then these small inconveniences, PET imaging is non-invasive and causes little discomfort to the patient."

Tags:differentiate, diagnosis, treatment, injected, glucose-metabolism

Abstract
This paper looks at how the different advances in brain imaging-techniques have contributed to scientists increased ability to understand the concept of memory. It looks at the advent of Computed Tomography (CT), Magnetic Resonance Imaging (MRI) and Positron Emission Tomography (PET), and what they have meant to the increased ability to understand and treat brain, and memory disorders.

From the Paper
"For example, fMRI was found useful for research by Awh and colleagues (1999) to observe brain activations during the performance of a spatial working memory task. In this investigation, subjects were given a spatial working memory task and a control task. Using fMRI the researchers found a functionally distinct, region that showed sustained activity during the spatial working memory task, confirming the location for the neural bases for that function. In the past, researchers who wanted detailed studies of human brain activity struggled because they lacked effective investigative tools. In experiments with humans the best technologies brought only limited success in mapping the processes of consciousness."

Tags:brain, ct, eeg, imaging, memory, mri, neuropsychology, neuroscience, pet, psychology, scan, amnesiac, cognative, personality, changes, human, brain, patients, techniques

Abstract
Discusses early development, methods, radiology and traditional x-rays. Covers digital imaging and x-rays, computer tomography scans (CT), positron emission tomograpohy (PET) tomography and gamma rays, and thermography.

From the Paper
"The first imaging techniques developed for medicine, x-rays, were discovered in 1985 by William Roentgen, and they were first used in medicine in 1896 (Lentle and Aldrich, 1997). Early radiology was chiefly concerned with skeletal morphology."

Abstract
This paper introduces, discusses and analyzes the topic of the pet business. Specifically, the paper discusses the business in America focusing primarily on doggie day care services. According to the paper, the pet business in America is booming, and shows no signs of slowing down anytime soon.

Outline:
The Pet Business
Doggie Day Care
Other Pet Businesses
Protecting Pets

From the Paper
"With the growing number of two-parent workers and long hours spent at work, many people chose not to own pets because they did not have time enough to devote to them. Doggie day care has changed that. The business is growing phenomenally, and even corporations such as PetsMart now offer doggie day care services in addition to grooming and training. The industry started out small, with centers operated by local area entrepreneurs who saw a need and began to fill it by opening small centers where a few dogs could spend time together. As the idea caught on, more and more centers have opened, and at least one company, Central Bark, offers franchises throughout the country. Central Bark's website refers to dogs as "children" or "babies," something that is very consistent with many pet owners, who treat their pets as their surrogate children. This phenomenon is also growing, and is helping fuel the growth in all aspects of the pet care business. This doggie day care company recognizes this, and refers to their day care as "preschool" for pets, tapping into the emotional side of the pet care business, and attracting owners who treat their pets like children."

Tags:ASPCA, vet, pet, insurance, American, Kennel, Club, pedigreed, grooming

Abstract
This paper discusses how in a pet friendly society pets offer human kind their services as teachers, therapists, healers and companions. It discusses how pets have the ability to share in the work that humans endure, as well as aid people in feeling more secure. The paper further defines a pet friendly society as one in which cures for cancer may be achieved, or disabled people are allowed to exist in dignity.
With little more than a request for food, shelter and love, pets enhance the lives of every human being. Pets do not care about race, gender, level of education, income, or the mistakes that people make. Regardless of those that suggest that pets are a bothersome inclusion in the world, a pet friendly society even serves the naysayers and skeptics with positive outcomes.

Tags:pet, friendly, society

Abstract
This is the write-up for a laboratory looking at the emission spectra of various light sources: incandescent lights, fluorescent lights, neon lights and sunlight, using diffraction glasses as a simple spectroscope. The emission spectra of the different lighting sources are noted in the paper as color spectra seen, Angstrom unit range for the color spectra seen, and intensity of the spectra seen.

Tags:emission spectroscopy, electromagnetic radiation

Abstract
The paper relates that the market for the pet health insurance industry is highly competitive. The paper explains that not only are there a significant number of existing competitors, but there are few barriers to entry and thus the constant threat of new entrants.

From the Paper
"Advantage Pet Insurance (Advantage) competes in the pet health insurance industry. Consumers of pet health insurance have a sincere concern for their pets' health and prefer to be able to offer those pets the best in veterinary care should the need arise. Advantage offers an array of pet health insurance such as accident coverage, illness coverage, dental care, accidental death, as well as liability coverage for damage to property caused by a covered pet, among a host of other related products. Additionally, these insurance products are categorized according to..."

Tags:advantage, pet, insurance