Magnetic Resonance Imaging (Mri) and Computed Tomography Scan (Ct)

Radiologic Technologist have a huge role when it comes to the diagnoses of a patient, it is because of their work that doctors are able to have an accurate diagnoses (Institute for Career Research 2010)

Everyday scans help save millions of lives, but radiologists make sure those scans are read correctly to ensure correct treatments are properly received. Radiologists are medical physicians who specialize in diagnosing and treating diseases and injuries using medical imaging techniques. Radiologists use techniques such as magnetic resonance imaging, computed tomography, and x-ray. Radiologists interept medical scans in order to make a diagnosis so that the patient can receive proper medical treatment.

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).

Open MRI exams allow pediatric, bariatric, elderly and orthopedic patients a better option than the more confining closed MRI. The open view can cut down on stress and nervousness during the

The MRI scan is one of the most recent technologies that employ radio waves, magnetism and the aid of a computer to give images of parts of the body that are subjected to this scan (Radiological Society of North America, 2012). The scanner is seen as a tube that has been surrounded by a giant circular magnet into which the patient is pushed with the aid of a movable bed. Of significance to note here is that the MRI produces no radiation at all hence the patients are not subjected to x-rays or any other form or radiations. MRI therefore poses no or little risk to life if there be any hence can be used even among the pregnant women.

Radiology allows physicians to look closely into the interior of the living human body without cutting it open and has transformed the way patients and physicians view health and disease. Radiology is the key diagnostic tool for many diseases that can be located in the brain, heart, and other organs or bone. It has an important role in monitoring treatment and predicting outcome. Radiologists have been strongly associated with technological developments and have been in charge of the evaluation of the strengths and weakness of different investigations. Radiologists have advanced the knowledge of the appropriate unified imaging design to expand clinical effectiveness. They have also been responsible for the performance of these development into the clinical setting and provide the best use of asserts and healthcare resources.

NMR is a form of spectroscopy that utilizes external magnetic fields and signals to identify the chemical structure of organic molecules, creating a gradient image. Through applying an applied Radio Frequency, the proton is able to flip into higher energy states, and then relax. This process is recorded by a NMR Spectrometer, and the difference in energy provides it with a certain NMR Signal. The difference in the magnetic fields of the allows for a gradient image of the area. There are various types of imaging that are useful for fast imaging or 3D imaging such as Gradient-Echo Imaging or Volume Imaging. Some other applications of the same principles that apply to MRIs mainly relate to the identification of organic molecules such as Protein Folding and Drug Development. Although MRI is a relatively safe and harmless process as opposed to other forms of imaging such as X-rays, certain aspects still pose a risk to patients

The largest of these categories is CT-based diagnosis in adults, but the category that has seen the most increase is diagnosis in pediatrics and adult screenings. The growth of CT use in children has been mostly in pre-surgical diagnosis of appendicitis and is primarily due to the decreasing in time needed to perform a scan. The shorter exposure times reduce the need for anesthesia to stop a child from moving while the image is being taken. A large portion of the increase in scanning for adults probably comes from the new CT-based screening programs for asymptomatic patients. The four areas attracting the most interest are CT colonography, lung screening for smokers, cardiac screening, and whole-body

Nuclear medicine uses computers and radioactive material to make images of the body to diagnose many forms of cancer, heart disease, gastrointestinal, endocrine, neurological disorders, and other irregularities. The procedure is usually painless. The patient has to take radiopharmaceuticals, or radiotracers before the exam. These are drugs that are injected, swallowed, or inhaled as a gas that emit radio waves from the area being scanned. During the exam the radiotracers give off tiny amounts of energy also known as gamma rays. Special computers detect the gamma rays and interpret them into pictures of the area examined. Nuclear medicine imaging differs from other exams in the fact that regular exams picture the structure and anatomy or the body. Nuclear medicine imaging focuses on the chemical reactions and physiologic processes that go on inside the body, like brain activity or rates of metabolism.

Computed tomography (CT) scan is a non-invasive medical imagery procedure that combines the use of x-rays and computer to generate tomographic parts of the area scanned. CT scan are also referred as CAT scans and they produce detailed images of structures inside the body such as internal organs and bones. CT scans can be used for treatment, diagnose and monitor condition. CT scans in screening and diagnosis are to detect cancer, determine whether a cancer has spread throughout the body or returned to the body after the treatment, and to determine effects of heart attack or myocardial infection on areas of the heart. Identify areas of the heart muscles that would benefit from a procedure such as angioplasty or coronary artery bypass surgery.

The Seldinger needle is an 18 gauge hollow needle with a stylet.” (p. 361) Interventional Radiology has grown a lot since the mid 70’s. With Interventional Radiography one uses catheters and other guide wires to open up the blood vessels or go through a pathway in an organ to treat diseases. The catheters are usually only a few millimeters in diameter. This is a minimally invasive procedure that has less risk than surgery. Since it is a minimally invasive procedure, it is performed with only a small nick in the skin. This means the recovery time is a lot shorter than going having surgery. Interventional radiography only uses local anesthesia in the hospital. With this procedure, the patient can usually leave the same day that the procedure is done. With interventional radiography one can use different imaging techniques, for example: x-ray, CT, MRI, and ultrasound. To elaborate on the different modalities that are used in interventional radiography and the importance of each, one can examine the examples that follow. Angiogram is when one x-rays the veins and arteries while injecting contrast into them and watching it highlight and show if there is any blockages or problems in the vessels. With angiography, it is the primarily used for looking at the circulatory system. CT shows a three dimensional cross section of the vessels to give the radiologist a better visualization. CT out rules traditional angiography where one can know if the patient needs stent placement in the vein or artery. MRI is a powerful vascular imaging modality with interventional radiography. One cannot use MRI if the patient has metal internally because of the magnetic field. Ultrasound is used to show the interventional radiography procedures, for instance: biopsies, abscess drainage, and tumor ablation. Treatment for interventional radiography is if

Your doctor as a variety of tests to rely on for diagnosing breast cancer and to identify its stage. One of those tests is the CT scan. A CT scan is a type of X-ray that allows your doctor to see inside your body. It reveals more information than a standard X-ray, and it produces images in 2D so your doctor can more easily pick up on tumors and metastasized cancer. Here is an overview of when and how the test is done.

Magnetic resonance imaging (MRI) uses the body's natural magnetic properties to produce detailed images from any part of the body. For imaging purposes the hydrogen nucleus (a single proton) is used because of its abundance in water and fat. When the body is placed in a strong magnetic field, such as an MRI scanner, the protons' aces all line up. This uniform alignment creates a magnetic vector oriented along the axis of the MRI scanner. When additional energy in the form of a radio wave is added to the magnetic field, the magnetic vector is deflected. The radio wave frequency that causes the hydrogen nuclei to resonate is dependent on the hydrogen and the strength of

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

MRI technology is a useful technique in the medical industry, there are many advantages to its use and for the most part the disadvantages of its use are minimal. They are great because they provide very detailed diagnostic pictures of most of the important organs and tissues in one’s body. They are also capable of showing unique information that other tests are unable to show. They are generally painless. Furthermore, they do not use radiation and are therefore suitable for use in children and pregnant women. Although there are many good attributes to MRI’s, there are still disadvantages to its use. For one, many people are claustrophobic and being in an MRI can become very uncomfortable for them. In addition, the MRI makes a tremendous amount of noise. Often patients are given earplugs or stereo headphones in attempt to muffle the noise.