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Advancements in mri assignment essay
Chapter 1 - MRI in practice
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To be completely honest, I do not know much about MRI machines; however, I did come across the device many times when I was with my clients at the hospital. I work as an interpreter, and I sometimes go with clients when they have an appointment with their doctors for x-rays or CAT scans, or even MRI scan. Nevertheless, I did have an MRI scan several times in my life. All I knew was that an MRI machine was a device which was used to take images of body just like the images taken by X-rays, CAT scans and Mammogram. I choose this article “What is MRI? How does MRI work” by Mathew Kalapurayil because I found these devices to be interesting and also extremely useful to healthcare providers because the vast number of patients saved by a scan which could detect and diagnose diseases, without any physical harm or side effects. The advantages of MRI scan include its careful precision in noticing physical irregularities of the body. In medical technology, identifying the disease is not based only on one result rather it is a collection of information shared by a group of specialists; one example of this is the radiologists who are skilled doctor. The radiologist is trained expert who understand and interpret the MRI information. His job is to read the magnetic resonance image from your scan and submit the result to your doctor. Your physician will then share this information and other medical information associated with your case with you. MRI stands for Magnetic Resonance imaging ((Kalapurayil, 2013). The Tests that are done by MRI does much the same as the CT scan without using X-rays. CT scan and MRI are used in many medical specialties, in addition to the musculoskeletal system. MRI is extremely accurate when it comes to detecting dis... ... middle of paper ... ... and bring the life expectancy of individuals suffering illness such as brain tumors and certain cancers. 1-Magnetic Resonance Imaging: The use of a nuclear magnetic resonance spectrometer to produce electronic images of specific atoms and molecular structures in solids, especially human cells, tissues, and organs (yahoowebdictionary.com). Example: MRI scan uses magnetic resonance imaging. Pacing wires: A device that is inserted in the heart of a patient intended to record EGG signals and to deliver electrical impulses to the heart is called pacing wire. Example: The uncle of my friend who had a pacing device inserted in his heart died last month. Radio waves: An electromagnetic wave within the range of radio frequencies (yahoowebdictionary.com). Example: Radio Waves use electromagnetic waves to transport information through the atmosphere.
Transcatheter aortic valve replacement or TAVR is the latest technology used principally for the treatment of aortic stenosis, a condition in which one of the major valves of the heart, the aortic valve, becomes tight and stiff, usually as a result of aging (3). Since many patients who need aortic valve replacement for aortic stenosis are too sick to undergo major valve replacement surgery, they are unable to get the treatment they need. With the transcatheter aortic valve, this issue is bypassed because this valve can be implanted in the heart by accessing the patient’s heart through an artery in the groin. The valve can be inserted through a wire that can be pushed to the heart and the old valve is simply pushed to the side when the new valve is implanted. This technology has been in use in the US with Edwards’ Sapiens valve since 2011 and has saved the lives of many patients with aortic stenosis (4). Medtronic’s CoreValve uses similar technology and has won patent fights in Europe and has been in use internationally. However, within U.S., Medtronic has not been...
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.
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.
...e a better and happier society and furthermore contribute to building healthier immune systems for everyone.
In conclusion, with all the facts being said, working with MRI machines may seem very challenging and very scary. Without the proper handling and correct safety precautions taken, several risk factors may be presented to the technologist and patients. It is vital that an MRI technologist be highly trained and educated in order to alleviate possible danger to patients and other personnels. MRI machines are highly used all over the world in order to diagnose and treat a good majority of the population's illness and diseases. They are capable of producing immensely detailed images that are unmatched to any other imaging modality. Though it is important to remember, the bigger the machine, the greater the risks and responsibilities both the patient and the technologist will be presented with.
In order to really understand where medical imaging is currently at one must have a basic understanding of where it came from. Twenty years ago radiologist would read and dictate the images on film. They were able to accomplish this by holding the film up to light boxes. This method provided no way for the radiologist to interact or manipulate the images
...s in one direction to acquire a single image slice. For another slice to be imaged the x-ray tube would again rotate another 360 degrees but on opposite direction. However this has been changed over the years and has been implemented a Slip-Ring technology which replaced the old high tension cables. In this way the new CT scanner x-ray tube had the ability to rotate continuously around the patient and in the same time the table was moving through the gantry to acquire data in a form of a Spiral or Helical. Therefore the new generation of CT scanners is called Spiral or Helical CT. The advantages of the new scanners are that the volume data can be reconstructed in any other planes (sagittal, coronal and three dimensional images), also there is a short time scan therefore radiation to the patient is minimized and also the artefact caused by patient motion is reduced.
Some treatments can be used. An electronic pace-maker can be inserted and it will send electronic impulse to the heart stimulating it to beat at a normal rhythm. Pace-makers are only inserted when the heart beats too slow. Tachycardis can also be very serious. It can lead to disabling symptoms and even death.
The 3D mammography is said to reduce the inaccuracy of breast cancer tests. The magnetic resonance imaging (MRI) is among the major competitors of the 3D mammograms. The MRI utilizes radio waves as well as strong magnets as opposed to the 3D mammography which use x-ray. The radio wave energy is usually absorbed and formed into unique patterns depending on the body tissues and disease. A computer then translates the patterns into specific readable images. A contrast liquid, gadolinium, is injected into the veins of the patient during or prior to the
CTscans stands for “Computed Tomography”. It is a way of looking inside your body using a special camera. It is an advanced scanning x-ray and computer system that makes detailed pictures of horizontal cross-sections of the body, or the part of the body that is x-rayed. A CT scan is a diagnostic test that combines the use of x-ray with computer technology. A series of x-beams from many different angles are used to get these cross-sectional images of the patient’s body. In a computer, these pictures are assembled into a 3-dimentianal picture that can display organs, tissues, bones, and any such thing. It can even show ducts, blood vessels and tumors. One of the advantages of CT is that it clearly shows soft tissue structures (such as brain), as well as dense tissue structure (such as bone). The pictures of a Ctscanner are a lot more detailed than the pictures of a regular X-ray machine. It can make pictures of areas protected or surrounded by bones, which a regular X-ray machine can not. Because of this, a CT scanner is said to be 100 times as affective and clever as an ordinary X-ray, and can therefore diagnose some diseases a lot earlier and quicker. It is recent technology that has made it possible to accurately scan objects into a computer in three dimensions, even though the machines and ideas were developed in the 1970s. In the 70s doctors started to use this new type of machine that could give detailed pictures of organs that the older type of x-ray, machine could not give.
When it comes to many things in the medical field there will always be a potential health risk involved in the treatment and diagnosis that will be beneficial to the patient. This is including things from prescription drugs to anything used to diagnose a medical issue. Diagnostic imaging has many modalities and is often used to diagnose many issues that include fractures, diseases, tumors, and cancer. Computed Tomography (CT), which uses radiation exposure, is one of the diagnostic imaging modalities used to detect and diagnose the medical issues previous listed and more. Computed Tomography comes with some potential health risk but also many medical diagnostic benefits.
Than, Ker. “Extending Human Life: Progress and Promises.” Live Science. 24 May 2006. 24 Jan
For the majority of patients receive an MRI it is safe. The MRI uses magnetic fields and radio frequencies to create images; therefore, there is no need to use harmful ionizing radiation.
Images of human anatomy have been around for more than 500 years now. From the sketches created by Leonardo da Vinci, to the modern day Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) scan, images have played a great role in medicine. Evolution in medical imaging brought together people from various disciplines such as Biology, Physics, Chemistry and Mathematics, a collaboration which has further contributed to healthcare as a whole. Modern day imaging improves medical workflows by facilitating a non-invasive insight into human body, accurate and timely diagnostics, and persistence of an analysis.
Without CT scans, there are other non-irradiated alternatives such as ultrasound tomography and MRI tomography can do the work. Both of ultrasound and MRI are widely used in diagnostics. Patients will not be exposure to radiation when to use either of them. MRI scans use radio waves and strong magnets to produce images and ultrasounds use high-frequency sound waves to produce