Magnetic resonance imaging

results obtained in 2014 by Chuang et al. (frontal lobes vs parietal lobes) most probably result from using different cognitive tasks in the MRI scanner (SCWT vs the Flanker Task). It is significant, however, that the results obtained with the magnetic resonance correspond to the results of the neuropsychological examination. The asymmetry of inhibitory processes (which are needed for correct executive control) is reflected in poor performance in neuropsychological tests. Verbal…

calcific tendonitis (Hodgson, O’Connor and Grainger, 2012). In addition, in ultrasound, operator experience and transducer frequency can markedly affect accuracy and it has an advantage over MRI because of the superior spatial resolution of ultrasound imaging (Hodgson, O’Connor and Grainger, 2012; Scott et…

The extensive recent research utilizing neuroimaging techniques to study pain in healthy subjects has many clinical implications for pain diagnosis and treatment. For the sake of brevity, this response will focus on fMRI (functional magnetic resonance imagining), a method that surveys changes in blood flow assumed to be reflecting alterations in neural activity and maps them to an anatomical representation of the patient’s brain (Borsook, Burstein et al. 2004). The culmination of several fMRI…

contributions the lesion method has made to neuroscience while exposing the problems associated with the functional brain imaging technique. The lesion method is central to neuroscience because it can establish a causal relationship between a brain area and a function. The logic behind this method relies on the idea that people who have brain damage experience a loss in a certain…

When preparing the cash flow analysis of a medical network, revenue, expenses, and profits must be considered. Revenue is generated by treating patients and rendering services such as an MRI. Costs are created by expenses in the network that include salaries for employees, purchase of medications and supplies, and payment of obligations incurred. Revenue does not necessarily mean that an enterprise is gaining profits and disregard for this detail may result in the network inadvertently,…

Stop reading if this doesn’t fit. Have you ever felt like you wake up, get ready, maybe get the kids ready, head off to work or school, take the old same route to work every day, get off work, go to the gym, go cook dinner, watch some TV, get ready for bed, then go to bed and do that same day all over again. If this sounds pretty familiar to you; then it might be wise to go back and reread the mindless autopilot rerun of a life that you may be living. We usually don’t open our eyes to see what…

I. Introduction: The purpose of the case study is to determine which of the patient’s cranial nerve(s) are damaged. The human brain and brain stem contain eleven pairs of cranial nerves to the neck and head, and one pair of cranial nerves to the abdomen and thorax. Each cranial nerve is numbered by a Roman numeral and in sequential order from cranial to caudal: (I) olfactory nerve carries sensory information to the brain and is responsible for the nose; (II) optic nerve carries sensory…

magnets. When the magnetic field makes the spinning protons wiggle, the stronger the magnetic field, the faster the wiggle. Nuclei wiggle at roughly 50 million times per second. If a proton is excited by some energy like a radio wave it will send that energy back as a radio signal that is slightly detectable. A MRI is basically a strong magnet, radio transmitter and receiver, as well as electronics to organize or coordinate their operation. The magnet creates the strong magnetic field, stronger…

eloquent areas adjacent to the tumor, which revolutionized DLGG approach. The most important techniques include functional MRI (fMRI), magnetoencephalography , white fiber tractography by Diffusion tension imaging (DTI) and transcranial magnetic stimulation. (41,48) fMRI is a noninvasive imaging modality that uses cortical blood flow changes as a tracer for increased or decreased neuronal activity, thus allowing cortical mapping when the patients perform specific tasks. One should note that it…

diffusion-weighted MRI, which show high signal activity in the cortex of the temporal lobes and insula, much more marked on the right. This finding is consistent with a diagnosis of herpes simplex encephalitis (HSVE). An MRI of the brain is the preferred imaging study in patients with suspected HSVE. Proton-density and T2 images may be more helpful than T1 images. An MRI can noninvasively establish many of the potential alternative diagnoses of HSVE. Abnormalities are found in 90% of patients…