Contrast Agents Used In Magnetic Imaging Techniques

Magnetic Resonance Imaging (MRI) is a way of medically imaging the body with the use of a magnetic field and radiofrequency waves. (1) As image quality of MRI continues to improve, more MRI exams are being ordered. Increasing MRI exams leads to increased wait times. Due to current wait lists, the health status of patients may decrease, influencing the type of treatment the patient will require once removed from the wait list. (7) The advances in technology have increased in the past decade, with MRI procedures are vastly growing to provide superior diagnostic quality compared to other modalities. New technologies are also allowing for faster scan times and further increased image quality. (9)

That is a great example. I actually have assisted with several MRI visits, and have often heard how dangerous it could be inside. But, there are no liability measures if a person come across a dangerous situation. Like you, I used to be someone very quiet and not ask questions. However, after coming across these scenarios, I would definitely ask questions if in future I have to get into a MRI scan, or even any kind of radiological or neurological testing. I think that people in the community are not aware about this as a person might be needing to do a MRI in order to diagnose the illness that they have. And, in that process they do not really care about the adverse effects of the

We have been given a new type of Magnetic Resonance Imaging (MRI) machine that will be available at our healthcare facility. As everyone knows an MRI machine is a non-invasive imaging technology machine that will help detect diseases in the brain, spinal cord and even soft tissues such as muscles, tendons (NIH, 2015). We need to organize a team that will oversee the education of the staff on how to use the machine. Then we need to figure out how we are going to educate the public on the machine and how it will benefit everyone. We need to have goals, timeframes as well. We also need to figure out the best forms of communication that we would use to get the information to the public as well as within our timeframe for the roll out of this new

Some gadolinium based contrast (GBC) agents are associated with nephrogenic systemic fibrosis (NSF); Patients with advanced acute or chronic kidney disease. Avoidance of GBC exposure is the best approach for high-risk patients[14].

taken before, during and after injection of a contrast agent (much like a movie or

How has the increase in use and availability of MRI imaging throughout the U.S. Healthcare system contributed to the rise in cost of MRI imaging procedures?

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

A computed tomography scan provides more detail images than a chest x-ray by creating cross sectional images, this images can help identify enlarge organs or lymph nodes in the neck, chest, abdomen and chest (American Cancer Society). During this test the patient is lays on a flat table that moves in and out of a donut shaped scanner that takes images in different angles. Sometimes contrast medium may be used to highlight abnormal areas in the body. If contrast medium is used, it is the nurse’s responsibility to establish a patent IV, check for iodine allergies, check for kidney function due to contrast nephrotoxicity, check for delay allergies after the procedure, and advise the patient to drink plenty of fluids to eliminate contrast (Leeuwen, Anne 2015). Magnetic resonance imaging (MRI) is only used when spread to the spinal cord and brain are suspected (American Cancer Society). Positron emission tomography (PET) scan uses an IV contrast called fluorodeoxyglucose (FDG), this contrast is a form of glucose, and because cancer cells reproduce quickly they need more glucose, which is why this contrast highlights the areas where abnormal cells are (Cancer Society). PET scans can be used to monitor how well patients are responding to treatment therapies, they can help identify areas of the body with lymphoma that may appear clear in other tests such as biopsies or CT scans allowing patients to

"There is a big camera that takes a picture of the inside of the body. How it works is you lay on the table and the bad will move up and it will go in and it will take a pictures like you would with a normal camera." This is the explanation of how magnetic resonance imaging work by Angie, in her YouTube video. Yet the explanation seems to simple to fully understand the concept and the applications of magnetic resonance imaging. So to better understand magnetic resonance imaging, the principles of atomic and molecular structures in the process of MRI and the applications of MRI were explored.

MRI rather creates data (pictures of the body) utilizing the force of radiation (the amount of re-transmitted photons) landing from different parts of body. Protons in thick or strong structures have a tendency to be pretty much inclined to misalignment when the upsetting radio waves are connected to the body's tissue, bringing about a lower number of re-transmitted photons originating from that region and along these lines a darker range in the subsequent picture. Chemists immediately understood that NMR had extraordinary utility; it permitted them to perceive the detailed structure of a molecule as they incorporated it. What had begun as a device for physicists immediately moved into the chemical

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

They can either be T1 weighted images or T2 weighted images, depending on the way you align the Hydrogen atoms. To briefly explain this for a better understanding, these protons are stimulated with a radiofrequency pulse, they become excited and upon returning to their original state give off energy. Different types of tissue return to their main magnetic field at different rates, giving up their energy to the surrounding lattice. It is the recovery process that is accentuated in T1 weighted imaging. In T1 weighted imaging fluid is dark and fat is bright (Westbrook, Kaut Roth & Talbot 2011). This lets us to distinguish different anatomical features. Where in T2 after turning of the radiofrequency, the protons become out of phase with each other due to their different magnetic fields. The spins interact with each other and begin to relax back to their original state. In T2 fluid is bright and fat is bright, which is useful when looking at pathological processes. This is what is exploited in stroke. T2 weighted images of stroke shows high signal intensity, which reveals either a tumour or a stroke. To differentiate between the two if not apparent, presence of a tumour may have reduced N-acetyl-aspartate NAA, which can be measured using spectroscopy. (Cradock

Since the introduction of the magnetic resonance imaging unit, diagnostic medicine has flourished. The ability to see different pathologies in a detailed soft tissue image has helped guide doctors in providing patients with better treatment and therefore a better prognosis. In many cases, magnetic resonance imaging is the golden standard in diagnostic studies. This is especially true when studying blood vessels. The majority of doctors turn to a magnetic resonance angiography(MRA) method called bright blood imaging when they are concerned with any blood flowing vessels. A few main areas of concern include vessels in the brain, neck, thoracic, abdominal aorta, renals, and vessels in the legs called a “run off”. When doctors order an MRA using bright blood imaging they want to rule out serious pathologies such as aneurysms, aorta dissection, or stenosis. Bright blood imaging uses a strong magnetic field and specific pulse sequences. Below we will discuss three different techniques and their own unique advantages and disadvantages.

An MRI is an imaging technique used in the field of radiology. The acronym stands for Magnetic Resonance Imaging. The technique relies on the principles of atomic structure to function, namely the positive charge of the proton reacting to a magnetic field. An MRI is commonly used to assess organs of the torso area (such as the heart and liver), pelvic organs (such as the bladder and reproductive organs), the brain, the spine, lymph nodes, blood vessels and other body parts. Doctors can use an MRI to find tumors, cysts, diseases of the liver and other organs, cardiac problems, nervous system anomalies and many other internal issues of the body. MRI scans relate to the principles of atomic structure in a very interesting way. Our bodies are

MRI with its high spatial resolution and multiplanar imaging can precisely assess vascular lesions and their relationships with nearby structures such as skin, subcutaneous tissue, muscles, nerves and bones. T2-weighted sequences with fat saturation and T1-weighted sequences after contrast administration enable determining the