Emission standard

It was recorded that 12 out of 35 patients, suffered from extrahepatic tumour. This was revealed by PET/CT combined and by CT scan single-handedly. The extrahepatic tumours in two of the patients were not detected by PET and PET/CT; those were recorded to have node of 2 –cm lymph in the hepatoduodenal ligament. It is furthermore, true that both forms of the scans (CT and PET/CT) reported extrahepatic tumour in patients that did not have it at all. The CT scan reported it in 3 out of 23 patients,…

can be provided as well, even though the cause-effect relationship may not be able to be established because of the complexity of the structure of the brain. There are different types of brain-imaging technologies. For example, the PET(positron emission topography), the MRI(magnetic…

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three decades neuroimaging has revolutionized the world of neural sciences. First, it was the introduction of the computerized axial tomography in the 70s that gave information of anatomical structure. In the early 80s, the development of positron emission tomography gave the neural sciences the ability to produce 3D images of functional processes and magnetic resonance imaging provided an alternative to CT and X-ray imaging without the radiation exposure. Lastly, the domination that Functional…

Cognitive psychology is the study of human mental processes that occur within the mind. It looks at such internal processes such as, memory, perception and attention. It came about in the 1950’s as a result of the behaviourist approach being flawed; internal mental processes cannot be observed. Therefore, from this an alternative method of looking at the physiological side of the brain had to emerge. Cognitive neuroscience was then born to identify the neural mechanisms, which are responsible…

In 1997 Adrian Raine conducted a study that focused on brain abnormalities in murderers that were shown by the use of positron emission tomography (PET). “The aim of his experiment was to see if murderers who pleaded not guilty by the reason of insanity (NGRI) showed signs of brain abnormalities with PET scans. Raine used 41 participants, 39 of which were male and 2 of which were females. The prisoner’s reasons for insanity varied. Six said they were schizophrenic, 23 said it was due to a head…

PET is a nuclear medicine, working imaging ability that creates a three-dimensional image of functional processes within the human body. [1] First, chemicals which emits gamma radiation are injected into the human body, then; the system detects pairs of gamma rays emitted indirectly by a tracer to show images of bones and organs. These substances are injected into the body, and are usually tagged with a radioactive atom.[1] Doctors use this device to create images of bones and organs of the…

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Introduction Brain imaging techniques have been a prominent resource in developing research associated with several cognitive disorders including: Alzheimer’s disease, concussions, MCI, etc. Researchers have been developing novel approaches to help develop solutions and/or gain better insight for what disease, injuries, and impairment have on the brain. One of the more recent techniques that has been developed is fMRI. One of the cognitive issues it can look at is mild cognitive impairment,…

Summary In the Article, What Can Neuroscience Tell Us about Evil?, the author Richard Brandt discusses how the advances in neuroscience reveal how the brains of psychopathic or sociopathic people are different. For example, some brain-imaging techniques show that not only do some of the psychopathic or sociopathic minds lack emotions such as empathy, but also, some techniques expose that these certain sections of the brain are inactive (Brandt, 2007). Furthermore, fMRI scans illustrate that in…