Magnetic Resonance Imaging (MRI) Scanners: What you need to know about Magnetic Resonance Imaging (MRI) Scanners The first Magnetic Resonance Imaging Scanner examination was performed on a human being in the year 1997. Magnetic Resonance Imaging Scanners also known as MRI Scanners are used worldwide for the benefit of people who need the interior of their bodies observed by professionals.MRI Scanners can create images by converting mathematical date into an image that professionals will examine, and will then further explain the results to the patient. MRI Scanners can be a very complicated system to understand, and the following questions are ones that patients might frequently ask when they are in need of getting an MRI Scan: The following will focu answering all the questions over what you need to know about Magnetic Resonance Imaging Scanners. What is a Magnetic Resonance Imaging (MRI) Scanner? Magnetic Resonance Imaging Scanners are helpful machines, that capture images of the interior of the human body without having to perform any surgery to look inside, which is how it described to be, in an informative article written by Shraddha Rupavate (2014), she mentions that MRI Scanners are a useful way to test for heart disease, in her article “ 8 tests that can tell if you have heart disease”. [1]Rupavate describes these scanners as a way to get images of the heart structure, identifying irregularities in the heart muscle,valves, detects disrupted or irregular blood flow pattern. Not only can a scanner provide images of the heart, but also other organs that may need examination. MRI Scanners can show show many complications that can be occurring in ones body that other imaging devices might not be able to do . These scanner... ... middle of paper ... ...efit of curing the patient,and the protons are highly affected by the radio waves transmitted to them.The radio waves will then be powered off, causing the protons to go back to their previous position they were before being affected by the radio waves. Afterwards, the protons will then send out their individual radio waves, and the Magnetic Resonance Imaging Scanner will then pick up these radio wave signals, and will then produce a digital image that professionals can then store on their computer or print out to begin examining them. [1] Rupavate, S. “8 test that can tell if you have heart diseases” The Health Site. Internet: http://health.inda.com/diseases-conditions/8-tests-for-diseases/ April 2, 2014 [April 2014] [2] Hickson, M. “MRI Scans” netdoctor. Internet: http://www.netdoctor.co.uk/health_advice/examinations/mriscan.htm April 12, 2012 [April 2012}
Both tests are very useful for assessing the pulmonary and cardiac system health of the individual being examined. This involves examining the individual’s response to the test by assessing their BP, HR, oxygen intake abilities, and using this information to infer whether they have some type of internal impairment. This includes
My interest in MRI started when I first read the book “MRI, The Basics” written by the author Ray Hashemi. By the time I successfully finished my MRI clinical placement in Tehran University of Medical Sciences, I knew for sure that MRI would be the field I would be choosing to take on. What attracts me most about MRI is how beautifully scientist could create a technology that can take advantage of the magnetic moments of human body for imaging it without any harms of ionizing radiation. Although there are drawbacks to MRI, combining it with other modalities would be a more effective approach to an accurate diagnosis.
What needs to be assessed is how these full body scans are produced. It is produced through radiation through computed tomography. And, is the amount of radiation that a patient is receiving necessary. Radiation exposure is harmful. According to the FDA website
The MRI, on the other hand is less expensive and much safer (as it doesn’t expose the patient to potentially harmful radioactive chemicals). The MRI or magnetic resonance imaging device, as an safer alternative, applies a powerful magnetic field around the head of the patient.
The role of the radiologist is one that has undergone numerous changes over the years and continues to evolve a rapid pace. Radiologists specialize in the diagnoses of disease through obtaining and interpreting medical images. There are a number of different devices and procedures at the disposal of a radiologist to aid him or her in these diagnoses’. Some images are obtained by using x-ray or other radioactive substances, others through the use of sound waves and the body’s natural magnetism. Another sector of radiology focuses on the treatment of certain diseases using radiation (RSNA). Due to vast clinical work and correlated studies, the radiologist may additionally sub-specialize in various areas. Some of these sub-specialties include breast imaging, cardiovascular, Computed Tomography (CT), diagnostic radiology, emergency, gastrointestinal, genitourinary, Magnetic Resonance Imaging (MRI), musculoskeletal, neuroradiology, nuclear medicine, pediatric radiology, radiobiology, and Ultrasound (Schenter). After spending a vast amount of time on research and going to internship at the hospital, I have come to realize that my passion in science has greatly intensified. Furthermore, both experiences helped to shape up my future goals more prominently than before, which is coupled with the fact that I have now established a profound interest in radiology, or rather nuclear medicine.
The description of PET scans in detail requires the understanding of the radioactive substance injected into the subject. First, a small amount of a biochemical substance is tagged with a positron-emitting radioisotope. A positron is an “anti-electron.” Positrons are given off during the decay of the nuclei of the radioisotope. When the positron emitted collides with an electron in the tissue of the subject, both the positron and the electron are annihilated. When this happens, the collision produces two gamma rays having the same energy (511 KeV), but going in opposite directions.
Cost effectiveness and noninvasiveness seem to be a theme in developing preventative treatments of coronary artery disease. A study presented by the Journal of Magnetic Resonance Imaging proposes that the use of coronary wall MRI would encompass both of these factors. These MRI images compared coronary artery thickness of symptomatic and asymptomatic patients. It was found that these images could successfully detect artery wall thickness in asymptomatic patients who would have otherwise not been screened for risk factors.
Oxygen is vital to a beating, healthy heart because it is needed to perform cellular respiration in order to pump the blood. When there is no oxygen being transported to the heart, the heart cannot pump blood, and eventually after being inactive, the heart tissue dies . This results in a heart attack. Heart attacks can be diagnosed before it is too late. One method of diagnosis is through a blood test. Blood tests are capable of sorting through the material found in blood, and if heart cell contents are found in the specimen, a heart attack can be diagnosed. If the levels of the cell contents are higher, this signifies that the heart attack is more severe. Another method of diagnosis is an electrocardiogram (ECG). An ECG measures the rhythm of the heart in order to detect defects. There are many other strategies that are used by doctors in order to diagnose a heart attack, such as chest x-rays, stress tests, tilt table tests, and echocardiograms, to name a few. A myocardial biopsy involves looking at the heart cells, and is accomplished by collecting a sample of heart cells from the patient. If the results are positive, a heart attack is diagnosed. A heart MRI involves looking at images of the heart in order to detect heart failure. The doctor uses the images to look for disorders in the structure of the
Driver, (2013), described the DEXA scanner as a machine that produces two x-ray beams of high and low energy levels. Much like fluoroscopy, the x-ray from the DEXA scanner comes from underneath the patient, and the scanner has a very low x-ray dose. Earlier versions of the DEXA scanner emitted radiation which required up to five minutes to scan an area of interest, but the more advanced machines can take as ...
One of the most recently new advances in radiology is the use of magnetic resonance imaging (MRI). MRI has been around for the past century. It was at first called Nuclear Magnetic Resonance (NMR) and then it changed to MRI once there was an available image. Walter Gerlach and Otto Stern were the first scientists to start experimenting with the magnetic imaging. Their very first experiment was looking at the magnetic moments of silver by using some type of x-ray beam. The scientists then discovered this was by realizing that the magnetic force in the equipment and in the object itself. In 1975, the first image was finally created using and MRI machine. The scientists used a Fourier Transformation machine to reconstruct images into 2D. The first images ever use diagnostically was in 1980. This is when hospitals began to use them. At first the images took hours to develop and were only used on the patients that needed it most. Even though MRI has been around for a long time, it has advanced and has been one of the best imaging modalities recently (Geva, 2006).
As a starting point in CT diagnostic imaging the form of radiation used to provide an image are x-rays photons , this can also be called an external radiation dose which detect a pathological condition of an organ or tissue and therefore it is more organ specific. However the physics process can be described as the radiation passes through the body it is received by a detector and then integrated by a computer to obtain a cross-sectional image (axial). In this case the ability of a CT scanner is to create only axial two dimensional images using a mathematical algorithm for image reconstruction. In contrast in RNI the main property for producing a diagnostic image involves the administration of small amounts of radiotracers or usually called radiopharmaceutical drugs to the patient by injection or oral. Radio meaning the emitted of gamma rays and pharmaceutical represents the compound to which a nuclide is bounded or attached. Unlike CT has the ability to give information about the physiological function of a body system. The radiopharmaceutical often referred to as a nuclide has the ability to emit ga...
Radiation therapists work closely with patients to fight cancer. According to Health Care Careers, Oncologists, Dosimetrists and nurses are some of the professionals that a radiation therapist works with while caring for a cancer patient. This group of professionals will determine a specialized treatment plan. The first step usually includes a CT scan performed by a radiologist to find the exact area that needs to be targeted with x-rays. Next, the therapist uses a special machine that emits radiation called a Linear Accelerator. They use this machine during a treatment called external beam therapy. During this process, the Linear Accelerator will project x-rays at targeted cancer cells or tumors. Another therapist will be in a different room monitoring the patient’s viral signs until the procedure is over. The external therapy l...
Radiology is one of the few so-called “physical-science”-based fields of medicine, making it a challenging and rewarding application of an academic interest in science. It combines advanced knowledge of human physiology with principles of atomic physics and nuclear decay, electricity and magnetism, and both organic and inorg...
Now with the dangerous jobs in the world and even the dangerous playgrounds, electronic imaging is needed. Electronic imaging, an outstanding technological advancement, helps views bones, organs, and cancerous cells within the body. X-ray or radiograph was the first type of electronic imaging introduced into the medical field. This played an important part in the medical field because it allowed doctors to see broken bones and inflammation inside of organs. Another important electronic imaging that was introduce was the MRI. Magnetic resonance imaging (MRI) aids physicians in seeing soft tissues in the body. With the help of MRIs doctors are able to see whether those tissues are normal or damaged. A little later on functional MRIs were created to see the soft tissues function. Functional MRIs are commonly u...
I chose this topic because I a found it as a very interesting thing which I wanted to know more about. I have been CT-scanned when I had concussion after a car accident when I was seven. Also because my father has been under a CT-scanner and a lot of my friends.