A Short History of MRI - 2254 Words

What is MRI? Magnetic resonance imaging (MRI) is a sophisticated computerized imaging technique, which has been a clinical diagnostic tool since 1980. MRI is used to create images with extraordinary detail of the body or brain by applying nuclear magnetic resonance phenomena. The distribution of hydrogen nuclei (protons), found in cellular water, depends on the tissue type and whether or not the tissue is healthy or diseased. MRI measures and records changes in the magnetic properties of these protons. The MRI technique uses a strong magnetic field, pulsed electromagnetic fields known as gradients, and radio waves to excite the protons and produce the image in the region of interest. The image is produced then displayed on a gray scale†¦show more content†¦MRI is superior to CAT scan because CAT scan is using ionizing radiation, MRI uses harmless radio waves. The only unusual preparation is that all removable metallic objects must be left outside the scanning room, including removable h earing aids, dentures and other prosthetic devices. Credit cards can be damaged by the MRI because magnetic codes can be affected by the MRI magnet. Magnetic Resonance Imaging is a powerful diagnostic tool in the medical imaging market place as the procedure of choice for the visualization of soft tissue. The MRI industry is producing over 2,000 units per year. The United States is represented with 40% of the world marketing and production of MRI. There is an emerging consensus that the MRI has a broad application in smaller hospital and clinics. Neurologists are one of medical specialty that depend a great deal on MRI for accurate diagnostic of the central nerve system. Other medical specialty that rely upon the MRI technology include neurosurgeons, orthopedic surgeons and chiropractors. MRI is useful in diagnosis of pinched nerves in the spinal column, heart disease, multiple sclerosis and other diseases of the central nerve system. The use of MRI technology will increase in the United States and the world because of the tremendous significance in modern medical diagnosis. The Tesla Unit is a label on every MRI machine signifying the strength of the MRI Magnetic Field. The stronger the magnetic field, theShow MoreRelatedThe Physics Of Magnetic Resonance Spectroscopy1005 Words   |  5 Pagesimaging, or MRI, is an applied form of Nuclear Magnetic Resonance spectroscopy (NMR). Utilizing the naturally occurring magnetic properties of water and hydrogen nuclei, composing between seventy to ninety percent of human tissue, to create detailed images of the human body. With recent technological advances, MRI has become widespread in the medical imaging community, with its function extending past radiology, into the realm of probing body chemistry in vivo, and analyzing brain function. (MRI textbook)Read MoreDiagnosis Of Multiple Sclerosis ( Ms ) Essay1300 Words   |  6 Pagesbetween the ages of 20 and 40 years (2) . The diagnosis Depend on a detailed history; careful neurological examination; and supportive paraclinical investigations. According to the new McDonald criteria, the diagnosis of MS requires objective evidence of lesions disseminated in space and time.MRI findings may contribute to the determination of dissemination in time or space (4).) General objectives: To evaluate the role of MRI in the early detection of Multiple Sclerosis (MS). Specific objectives: Read MoreA Brief History Of Medical Imagining And Mri1031 Words   |  5 PagesIntroduction: Magnetic resonance imaging, or MRI, is an applied form of Nuclear Magnetic Resonance spectroscopy (NMR). (1). Utilizing the naturally occurring magnetic properties of water and its associated hydrogen nuclei, a molecule composing between seventy to ninety percent of human tissue, detailed images of the human body are created. (1). With recent technological advances, MRI has become widespread in the medical imaging community, with its function extending past radiology, into the realmRead MoreA Short Note On The Loss Of Myelin Essay1214 Words   |  5 Pagesand it can occur in much older adults. (1) Risk factors affecting MS includes Age, MS can occur at any age, but most commonly it affects people between the ages of 15 and 60. Sex, Women are about twice as likely as men are to develop MS. (7) Family history, If one of the patient parents or siblings has had MS, they are at higher risk of developing the disease. (7) Certain infections, A variety of viruses have been linked to MS, including Epstein-Barr, the virus that causes infectious mononucleosis.Read MoreImaging Case Study1016 Words   |  5 PagesImaging Prior to advances in imaging, the primary means of diagnosing AD is from the patient history and cognitive impairment testing (Long, Chen, Jiang, Zhang, 2017). Interviews with the family members and caregivers are part of the assessment (Long et al., 2017). The diagnosis based on neuropsychological scale is subjective and less repeatable and a rich clinical experience of physicians is required (Long et al., 2017). The presence of neurofibrillary tangle, plaque buildup and tissue loss inRead MoreAmyotophic Lateral Sclerosis Case Study Essay1006 Words   |  5 Pagesapproximately 211 pounds. The patient has no known allergies does not smoke and has a relatively clean health record. After filling out the patient medical history forms, the patient is seen by the doctor. The patient explains to the doctor that lately he has had trouble lifting object he would not normally have trouble with, as well as walking short distances, and being very fatigued. After further examination th e patient explains how he recently found a tick on his back and removed it, but now thereRead MoreLung Cancer : Cancer And Cancer1315 Words   |  6 Pagesthis group reduced the risk of lung cancer death by 20%†. Magnetic resonance imaging (MRI) scans may be needed when a precise location of the tumor is needed. MRI produces a detailed image and can detect the tiny changes of structures within the body. The only risk with MRI is that people with pacemakers, metal implants, artificial heart valves, and other surgically implanted structures cannot be scanned with an MRI because of the risk that the magnet may move the metal parts of these structures. PositronRead MoreSymptoms And Diagnosis Of Ms983 Words   |  4 Pagesdiagnosis of MS continues to be predicated on the clinical history and neurological examination; that is, finding multiple lesions in time and space in the CNS. Magnetic resonance imaging (MRI) remains the most important diagnostic tool for allowing the early and more precise diagnosis of the disease. Revised diagnostic criteria classify individuals in the categories of MS into either not multiple sclerosis or possible MS based on evidence from MRI (McDonald, 2001). Cerebrospinal fluid (CSF) examinationRead MoreLaser And The Head Region Of A Patient1299 Words   |  6 PagesAbstract Today, Three-dimensional (â€Å"3D†) images are available for their use. Dentists have been using this method in order to represent the jaw and the head region of a patient. This represent one of the most important advances in the history of medicine. In modern dentistry, the use of computerized machines in the develop of 3D imagens like computed tomography, cone beam computed tomography, magnetic resonance imagen and 3D Laser transformed the pass into a new promising future. ThisRead MoreObstructive Sleep Apnea ( Osa )1199 Words   |  5 Pagesdysfunction and synaptic plasticity alternation, and may also activate neurodegenerative processes, increasing the risk for mild cognitive impairment (CI) and dementia.[7, 18, 21] Neuroimaging studies demonstrate that white matter hyperintensities (WMH) on MRI and low fractional anisotropy (FA) on Diffusion Tensor Imaging (DTI) are associated with clinical depression and cognitive decline,[22-24] indicating that C-SVD could be a mediating pathological process that leads to the development or progression of