...role of Magnetic Resonance Imaging (MRI) in Diagnoses of Pituitary Gland Name: Institution: The role of Magnetic Resonance Imaging (MRI) in Diagnoses of Pituitary Gland The pituitary gland is an important part of the body because it controls several hormonal glands such as adrenals and the thyroid. The gland is a nearly the size of a pea and has two parts referred to as the lobes (Maya & Pressman, 2010). The front part is the anterior pituitary while the back part is the posterior pituitary. The pituitary gland is part of a bony hollow called the pituitary fossa behind the bridge of the nose and below the brain’s base near the optic nerves. Maya and Pressman (2010) add that the pituitary gland is the most important part of the system because it produces hormones controlling the functions of other endocrine glands. The most common problem occurring in the pituitary gland is the development of a benign growth or tumor. The tumor causes the gland to secrete excess hormone, blocks its production or causes it to malfunction. Other causes of pituitary disorders include traumatic brain injury and pituitary infarction. Although pituitary disorder are able to alter quality of a person’s life significantly, medical or surgical treatment is available where efficient diagnosis is made. The present study investigates the role of imaging modalities in the evaluation of pituitary gland disorders. Particular emphasis is laid on the role of Magnetic Resonance Imaging (MRI) in diagnosing...
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...II-A ChemLec101F Magnetic Resonance Imaging A Paper Requirement in Inorganic Chemistry Magnetic Resonance Imaging (MRI) also called as Nuclear Magnetic Resonance (NMR) is a unique imaging technique that can scan the body without cutting inside the human body, gets images of the human body through scanning with the use of magnets and radio waves to create images and could serve as a valuable addition to diagnostic medicine. The patient lies on a patient table then slides into the cylinder and placed in a magnetic field gradient. When operated, protons are tiny particles that are present in water molecules in the body and protons aligned in parallel to the powerful magnetic field. Radio waves are transmitted in pulses and these protons are echoed along the body. When the MRI machine is scanning, the MRI scanner receives the echoes and it will construct a clear and detailed image of soft tissues of the body to a computer that creates an image based on the radio signals emitted from the body. The whole procedure can take 20-40 minutes or can take even longer. The scanner is very loud, so patient will be required to use earplugs or headphones to protect their ears from the noise. Magnetic Resonance Imaging is important because MRI scan can investigate or diagnose conditions that affect soft tissues such as abnormal tissue like tumours, joint or spinal injuries or diseases, and soft tissue injuries or diseases of internal organ like brain or heart. In addition, MRI is also important...
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...Understanding The Hazards Of The MRI Technique Magnetic resonance imaging (MRI) is one the most rapidly advancing imaging techniques available today. Not to mention one of the safest but there are many safety precautions that need to be taken before encountering its magnetic field. It is used to produce detailed sectional images of the body on any imaging plane. Compared to the x-ray medical diagnostic techniques, general position emission tomography (PET) and computed tomography (CT) a (MRI) scan does not apply ionising radiation but uses the radiofrequency field to scan the body. Therefore, the system is considered to have less health effects than the ionising radiation-based imaging modalities. The potential benefits of MRI are numerous,...
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...Many people wonder how psychologists know that a particular part of the brain is associated with a certain function. Researchers have used different techniques to study the brain. Researching the brain is not new. Back in the 1800s, phrenology was a popular technique. Phrenology was a procedure that used bumps on an individual’s head to determine and predict personality characteristics. Unfortunately, it is not very accurate. We have found more reliable information from lesions in the brain. A lesion is the natural or intentional destruction of brain tissue. Knowing what happens when a part of the brain is damaged or destroyed is a key to knowing its function when it works correctly. In 1848, a railroad worker named Phineas Gage FIGURE 3- 10 suffered an accident when an explosion drove a 1-pound steel rod straight through his head, destroying much of the front part of his brain. Some of the reports after the accident suggested that his personality was altered. Gage’s case underscores the fact that examining lesions is an important way to study the functions of various parts of the nervous system. Today, more sophisticated technologies are employed to study and treat the brain. For example, electrical stimulation of the brain is a technique used to stimulate neural FIGURE 3- 10 Phineas Gage suffered an accident that damaged his frontal lobe. Phrenology A procedure that uses bumps on an individual’s head to determine and predict personality characteristics...
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...Magnetic resonance imaging, aka MRI, is a scanning technique to produce detailed 3 dimensional anatomical images of the human body in any direction by using a magnetic field and radio waves. The pictures provide information that can be useful in diagnosing a wide variety of diseases and conditions. Radio waves cause the molecules to create faint signals that are used to view the body in narrow, axial slices. How does MRI Work? An MRI scanner has a large magnet with a tube shaped tunnel through the middle. The MRI machine picks up signals from the nuclei of the hydrogen atoms in the body. A computer converts these signals them into a black and white picture. The magnets from the MRIs develops a strong magnetic field that makes the protons to align with the field. When the radiofrequency pulses are sent in, the protons are stimulated and makes them non-equilibrium, a state of the chemical reaction in which the opposing forces are not balanced. When the pulses are off, the particles produce electrical signals...
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...Magnetic resonance imaging (MRI) or nuclear magnetic resonance imaging, is a diagnostic tool capable of showing detailed images of the human body. It is a more reliable technique when there is a need to look at body organs and soft tissue that can't be clearly observed with X-rays, CT scans or ultrasound. The most important feature about MRI is that it can help to clearly distinguish between healthy and unhealthy tissues in organs and body parts like the brain, spine, joints and other internal organs. This can lead to early detection and treatment of life threatening diseases. MRI uses a powerful magnetic field, radio waves, rapidly changing magnetic fields, and a computer to create body images. It measures the water content (or fluid...
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...reasons are epilepsy, dementia, sleep disorders, and to help find out if a person has a physical problem. The good news is that the test isn't painful and you don't have to remove any hair from your scalp. The bad news is that the adhesive used to attach the electrodes to your scalp will take a day or two to scrub out. An EEG may be done in a hospital or by doctor’s office by an EEG technologist. Another method for studying the brain is called an MRI. The abbreviation MRI stands for magnetic resonance imaging. Its a test that uses a magnetic field to pulse radio wave energy to make pictures of organs and structures inside the body. MRI’s can show problems that cannot be seen with other imaging methods such as, X-ray, ultrasound, or computed tomography. Magnetic resonance imaging is used for several reasons. Its used to find problems such as tumors, bleeding, injury, blood vessel diseases, or infection. This test can be done by an MRI technologist, yet the pictures are usually interpreted by a radiologist. Some of the pros of having an MRI done are: 3D images with high resolution, excellent soft tissue contrast, and it’s safe and painless for patients. Some of the cons are: scanning takes a long time, some patients might get claustrophobic, and patients with metallic devices cannot be tested. Positron emission tomography, or PET is a test that uses a...
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...MAGNETIC RESONANCE IMAGING MACHINE Purpose: Magnetic Resonance Imaging Machine (MRI) is a machine that uses a magnetic field and pulses of radio wave energy to make detailed images of organs, and structures inside the body. 3-D image of the body The MRI unit has an extremely strong magnet so patients should avoid wearing jewelry and other accessories because they could interfere with the magnetic field. Items not allowed to enter the exam room: * Jewelry, watches, credit cards, and hearing aids (all can be damaged) * Pins, hairpins, metal zippers, and similar metallic items (can alter Images) * Pen, pocketknives, eyeglasses Most of the time, the MRI scan is safe for patients who have metal implants, the technologist should know if the patient has a devices in their body. * Artificial Heart Valves * Implanted Drug Infusion Parts * Implanted Nerve Stimulators * Implanted electronic devices * Artificial Limbs or Metallic Joints Prostheses * Metal Screws, Plates, or Surgical Stapes If there is any doubt about the presence of metal in the body an x-ray should be taken. Very rarely, dyes used in tattoos contain iron which may heat up during an MRI scan. Other things to keep in mind before you receive a MRI: * Patients with claustrophobia or anxiety may want to request a mild sedative * If the MRI scan will involve taking a contrasting agent, the patient should tell the provider about any allergies including hay fever, hives...
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...Nuclear Magnetic Resonance Explain how the NMR works, analyzing it's strengths and weaknesses, and discussing any ral world applications it may have. All the information founded was based in a careful research from the question above. The research about Nuclear Magnetic Resonance was made with very reliable sources that are trustworthy webpages which guide me, help me and explain me all about the theme, how does it happened, how it does work, and what they use it for, helped me write this paper. The intellectual and scientific contribution were a turning point in the construction of the modern world. Destroying the medieval world view and discarding the idea of divine purposes, modern science starts to examine the physical nature through mathematical relationships and chemical compositions Word Counted:125 Nuclear Magnetic Resonance Introduction: The nuclear magnetic resonance NMR abbreviation is an...
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...PS124-05 Rachael Patton 9/25/2013 PS124-05 Rachael Patton 9/25/2013 Alzheimer’s Disease Alzheimer’s Disease Have you knew someone with Alzheimer’s or knew someone that had a loved one with Alzheimer’s disease, if you have then you know that it is a very hard thing to deal with. To have someone look at you as though they don’t know you? Or have you ever wondered why they call it Alzheimer’s disease well according to the National Institute on Aging is named after Dr. Alois Alzheimer, he had noticed changes in the brain tissue of a woman that died of an unusual mental illness. The woman’s symptoms included memory loss, language problems and unpredictable behavior. After she had died he had found many clumps in the brain which are now called amyloid plaques and tangled bundles of fibers called neurofibrillary tangles. Plaques and tangles of the brain are the two main features of Alzheimer’s disease, so as you can he is the one who first discovered Alzheimer’s disease and that is why it is named after him. Now although I have not had any kind of experience with this disease, I felt that it is an important disease to research because I want to know how to prevent this disease from happening to me or someone that I love. In order for me to do this I have to understand why and how the parts of the brain that causes this disease to malfunction and cause people to lose their memory. According to the Cleveland Clinic Alzheimer’s disease is a progressive disease that damages...
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...Open Bariatric Imaging Diagnostic imaging gives MRI Specialists an accurate representation of what is happening inside a patient’s body. Once complete, the MRI Center gives the patient’s physician a report detailing the results of the scan. These results help a physician determine which treatment is best suited for the injury or condition. A traditional MRI machine is not designed properly for a bariatric patient. Because there are numerous medical conditions and ailments that cannot be accurately diagnosed without the use of state-of-the-art equipment like Open Bariatric Imaging machines, when a physician orders a Magnetic Resonance Scan for a bariatric patient and/or a patient who becomes anxious in tight spaces (claustrophobia), finding a facility with an MRI scanner designed for these patients is essential. MRI Specialists can...
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...Carole Commodore BME 100 Problem Set 4 Stony Brook ID: 109371838 Question 1 A. (8 pts) Explain in a few sentences why structural and functional MRI images are often overlaid in fMRI studies, instead of just collecting functional images (just fMRI data). Be sure to include the major difference between the images created by these two methods. Structural and functional MRI image are often overlaid in fMRI studies instead of collecting just the functional MRI data because these overlaid diagrams provide a more comprehensive images of what is occurring in the body. The purpose of the structural images is to portray a static image of the organ, the tissue or the area. The functional fMRI images are a representation of an organ that specifically...
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...accomplish. There are quite a few methods that our bio psychologist’s use to study the brain. As stated in Biopsychology 8 Ch5, “Some of the methods used to study the brain include: X-rays, contrast x-rays, magnetic resonance imaging (also known as MRI), positron emission tomography (also known as PET), and in my opinion the best way of studying the brain; functional MRI.” Unlike using just MRI to visualize the brain; functional MRI is a great way to study the activity of the brain, while being able to visualize the brain. When using just a magnetic response imaging machine to study the brain, the only great thing about using it is being able to visualize what is going on in an individual’s brain. For example; if someone were to have an appointment to look at their brain, to determine whether or not they have a tumor; this type of method would be a great method to use. The reason I say this is because an MRI machine is able to visualize if there is anything growing inside the brain. While an MRI may be a great method to use for this type of procedure; a functional MRI would be able to not only visualize what is growing in the brain; it would be able to show the doctor the activity of the tumor and other activity in the brain. As stated in Biopsychology 8 Ch5, “Functional MRI produce images representing the increase in oxygen flow in the blood to active areas in the brain.” Another great aspect of Functional MRI’s are that unlike other methods used to study the brain; they are...
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...seeking care. The value of a new medical technology is determined by supply and demand (Getzen, 2007). Diagnostic radiology is a prime example of the value being determined by both supply and demand. As radiologic imaging advanced from two dimensional x-ray images to three dimensional ultrasound images, magnetic resonance imaging (MRI), and Computed tomography (CT) providing better image quality and increased accuracy of diagnoses, the demand for these services rose. Statistics show that from 1996 to 2006 the frequency of radiology imaging increased nearly 60%, from 61 million studies to 99 million (Klein, 2008). This significant increase in use is directly related to enhance image quality used for diagnosis. This figure will continue to rise as more baby-boomers use these services to diagnose potential health issues that can be determined through radiologic imaging. This paper will discuss the demand and supply of outpatient radiologic imaging centers within the United States health care industry. Outpatient Radiologic Imaging Statistics indicate the growing use of radiologic imaging for diagnosis of health ailments. This demand has created a strain on the ability of hospitals to adequately supply all patients with access to diagnostic radiologic imaging without delay. This...
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...MRI Scan Patient Preparation When having an MRI examination, there is no preparation or dietary/NPO requirements. Special Nursing Considerations Patients cannot have halter monitors, telemetry units, nerve stimulation units or a IV pump in the magnet room Clothing Requirements No metal can enter the exam room, clothing with metal snaps or pins should not be worn. Jewelry, watches, rings etc should be left in a locker. Hairpins and dentures, should also be removed and left in a locker or outside the exam room Heavy facial makeup should not be worn as it may create artifacts on the image. Labs Labs are not required unless you have a history of impaired kidney function. However, allergy history records are necessary for contrast studies. Contraindication If you have a heart pacemaker or pacing wires, cerebal aneurysm or Swan Ganz catheter you cannot have an MRI under any circumstances! Pregnancy is a contraindication and will require patient consent for an MRI. All other history of metal fragments in the eye require orbit screening x-rays prior to your MRI. All other history of implants or surgery must be indicated to the technologist. The make and model of implants may be necessary (i.e. ear implants, heart valve replacements). The Exam Your exam will last between 30 and 60 minutes. You will need to lie still for periods of 3 to 10 minutes at a time while the series of images are collected. You can breathe freely during this time. You may, in some cases, be allowed to...
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