Nuclear Magnetic Resonance Imaging

MRI uses the body’s natural magnetic properties to formulate an image of the soft tissues. It does this by using the hydrogen atom nucleus which has a single proton and is a spinning charged particle. The human body is made up of 70% water, which is hydrogen and oxygen. Those hydrogen nuclei (protons) spin inside the body, creating their own magnetic field. They are orientated randomly and cancel each other out when no field is applied.

MRI’s are one of the many pieces of technology we use to change lives. Without them, many people would be suffering from aggressive diseases and left clueless as to what is happening to them. There are other ways you can find out what illness someone has, but MRI’s “detect diseased or injured tissue more accurately, safely, and efficiently than any other medical imaging technique.” (Raymond Damadian, Inventor of the MRI).

During a brain MRI, a special mechanism called a head coil is placed around the patient's head to assist in producing very detailed images of the brain. The head coil does not touch the person, and the person can see through large gaps in the coil. A spine MRI is normally used to look for a herniated disk or narrowing of the spinal canal in patients with neck, arm, back, and leg pain. It is also the best examination to use to search for a recurrent disk herniation in a patient who has had prior back surgery. A bone and joint MRI can be used to check virtually all of the bones, joints, and soft tissues; it can be used to identify injured tendons, ligaments, muscles, cartilage, and bones. A MRI of the abdomen is most commonly used to look more specifically at an abnormality seen on another test, such as an ultrasound or a CT scan. The exam is usually customized to look at such organs as the liver, pancreas, or adrenal glands. For female patients, a pelvic MRI provides a more detailed look at the ovaries and uterus and is often used to follow up an abnormality seen on ultrasound. For male patients, a pelvic MRI is sometimes used to check those diagnosed with prostate cancer. Magnetic resonance angiography (MRA) depicts the blood vessels. The blood vessels in the neck and brain are often studied by MRA to look for areas of narrowing or widening. In the abdomen, the arteries supplying blood to the kidneys are also

An MRI consists of multiple powerful magnets which cause the atoms to resonate within the body. The nuclei produce their very own magnetic field which is able to be picked up by scanners and then turned into pictures for easier study and documentation. Since the body is mostly made up of water, the hydrogen atoms are able to align once the magnets are turned on in the machine. Two of the most popular MRIs would be the Functional MRI which studies the blood flow to the brain, while the Diffusion MRI studies the water molecules and how they diffuse throughout the body

Magnetic resonance imaging (MRI) is a test that lets your health care provider see detailed pictures of the inside of your body without using X-rays. Instead, strong magnets and radio waves work together in a magnetic field to form very detailed and sharp images. The images are viewed on a TV monitor in two- and three-dimensional form. The magnets and radio waves are harmless.

An ultrasound and magnetic resonance imaging, more commonly known as an MRI, are two common ways doctors obtain pictures of what is happening in one’s body. An ultrasound uses soundwaves to penetrate human flesh. As these waves encounter things of varying density in the body, the waves are reflected back differently. Due to these waves’ reflections, the ultrasound machine can formulate an image in real time, and physicians can interpret these pictures to give diagnoses (No Author, 2008). On the contrary, an MRI uses a powerful magnet to align atoms in the body. These atoms create their own rotating magentic field which a scanner can identify and create a picture from (Lewis, 2014). Although an MRI gets higher quality images and scans through bone and air, an ultrasound is ultimately better and more commonly used because it is cheaper and more accessible.

A Magnetic Resonance Imaging (MRI) Technologist creates images, using computer-imaging systems, of the patient’s body to help the doctors diagnose and treat the patients’ illness and/or injuries. The MRI Technologist meets with the patients before the scan to explain medical procedures and answers questions they may have. They also collect medical information from the patient’s, family, and/or medical professionals and instruct the patient on what they need to do during the exam. Some MRI scan requires a medical substance for imaging which the MRI Technologist can administer. Once the image is taken, the MRI Technologist first processes the images, then checks the quality of the image and finally prepares summarized reports of the patient’s

According to (Morris and Liberman, 2005), MRI is principles technique which has a different physical from mammography and ultrasound. It indicates the protons water density in tissues including its magnetic interactions with molecules in its local surroundings. Magnetic interactions affect on MRI signal, that influences how fast the water protons can get back to equilibrium after receiving the radio-frequency energy from RF coil. MRI Parameters system can adapt to switch of T1 and T2 weighting that is providing image contrast to be formed.

Serious neurological problems such as meningitis, encephalitis, strokes, brain tumors and intervertebral disk disease require Magnetic Resonance Imaging (MRI) technology in order to make the most accurate possible diagnosis. When it comes to imaging the soft tissues of the body, which includes the nervous system, MRI is considered the most advanced tool available to modern medical and veterinary science. CT scans and plain radiographs are frequently inadequate at diagnosing such problems. By utilizing a powerful magnetic field, Magnetic Resonance Imaging devices are able to make a more comprehensive image of the internal structures of your pet's body in the affected

MRI’s, magnetic resonance imaging, is a medical imaging technique used in radiology to form photographs of the anatomy and physiological processes of the body in both disease and health. Those who are more susceptible to use this machine are those who have been directed by a doctor because of some type of health problem they suffer from. According to medical news today, “MRI’s measure brain activity by monitoring blood flow in the brain and a functional MRI can also be used to decide the effects of tumors, stroke, head and brain injury, or neurodegenerative diseases such as Alzheimer's.”² About 36.7 MRI units have been reported to be used in the United States per million population. This specific technology is important to understand because

Magnetic Resonance Imaging, or commonly known as MRI, is a technique used in medicine for producing images of tissues inside the body. It is an important diagnostic tool because it enables physicians to identify abnormal tissue without opening the body through surgery. MRI lets physicians see through bones and organs. MRI does not expose the patient to radiation, unlike tests that use X-rays. MRI provides an unparallel view inside the human body. It is the method of choice for the

Magnetic Resonance Imaging (MRI) is a diagnostic procedure technique that uses a magnetic field and radio waves to create detailed images of the organs and the tissues within the body (Mayo Clinic 2013 par.1). When the human body lies inside the MRI machine, the magnetic field temporarily

Over the last several years, magnetic resonance imaging (MRI) has become an increasingly popular technique. This is because it has been shown to be effective at diagnosing various conditions and diseases in the patient. The way that this occurs is the individual is placed into a movable bed that slides into a machine. This is a large magnet with hydrogen protons that can go through the body to see different aspects of the internal organs and systems. The images that are uncovered can tell health care professionals about the extent of a condition impacting the body. This is when they can determine the best treatment options moving forward. (Albert, 1994)

Last of the diagnostic imaging tools is the MRI. MRI, which stands for Magnetic Resonance Imaging, was a technique developed in the 1950?s by Felix Bloch, and is the most versatile, powerful, and sensitive tool in use. The process of MRI was originally called NRI, Nuclear Resonance Imaging, but was found to be to confusing due to the fact that MRI?s don?t use radioactivity and ionizing radiation. The MRI generates a very powerful electromagnetic field, which allows the radiologist to generate thin-section images of any part of the body. Also it can take these images from any direction or angle, and is done without and surgical invasion. Another plus side to the MRI is the time it takes to perform, where as a CAT scan may take 30-60 min. A MRI may only take 15 minutes max. The MRI also creates ?maps? of biochemical compounds within a cross-section of the body. These maps give basic biomedical and anatomical information that provides new knowledge and may allow early diagnosis of many diseases.

An MRI (magnetic resonance imaging) is a scan that uses a system of techniques, involving magnetism, radio waves and a computer to generate detailed images of the human body. Essentially, it is a tube encased by a large circular magnet. The patient would be placed on a moveable bed, which is then inserted into the tube. The magnet then creates a strong magnetic field that aligns the protons of hydrogen atoms. These hydrogen atoms come from the human body, which is 50-65% H2O. These atoms are exposed to a beam of radio waves. This spins the various protons of the body. As they spin, they produce a slight