Technology And Its Impact On The Medical Field

Magnetic Resonance Imaging (MRI) in the 1970s to 1980s to present day. Has served as a medical imaging technique used in radiology to form detailed pictures of the body for both health and disease. In the MRI scanners, there are strong magnetic fields, radio waves, and field gradients in order to generate images of the inside of the body and appear on a screen. MRI and X-rays are not the same. MRI scans take more time, are louder, and usually require that the body goes into a narrow tube. While X-ray scans take less time, aren’t really loud, and don’t involve a narrow

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.

during the Cold War, and the start of Reagan’s political campaign, was the invention of the MRI. On July 3rd, 1977, the first Magnetic Resonance Imaging exam on a living patient was performed. An MRI identifies atoms by how they behave and became an extremely useful, non-invasive method for imaging he inside of a human. (APS News) Although, the first version of the MRI was more barbaric than the ones we have today. The prototype was a machine made from a hollow cylinder magnet, 53 inches in diameter, 30 miles of niobium-titanium wire, and a liquid helium cooling system. This was called the NMR (Nuclear Magnetic Resonance). Isidor I. Rabi was the first to discover NMR. NMR was later developed into the earliest stage of the MRIs we use today by a man by the name of Damadia. He got the idea of expanding the NMR after investigating electrically charged particles in the human body. After years of research and tests, Damadia’s crew was ready to test their new invention, and with the huge risk that was thought to come with testing this machine, Damadia volunteered himself. July 3rd, 1977, he was successful with one of the most ground breaking inventions of all time. (Smithsonian Magazine:

MRI provides both anatomic and physiologic information. It is the modality of choice when cartilage, nerves, or organs are of interest. Magnetic resonance imaging does not give off any ionizing radiation. Instead, the magnetic force reacts with the hydrogen in our bodies to show the images. Because of this fact, it is the least harmful to the patient.

MRI: Magnetic Resonance Imaging... involves creating a magnetic field around a person 's body and using radio waves to construct imagines of the person 's tissues and biochemical activities.

Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body. In many cases, MRI gives different information about structures in the body than can be seen with an X-ray, ultrasound, or computed tomography (CT) scan. MRI also may show problems that cannot be seen with other imaging methods.

Magnetic Resonance Imaging is also known as MRI. This computerized device is used for scanning the

MRI scanners use powerful magnets to create a temporary magnetic field around a patient’s body. Radio waves are transmitted through the body by a transmitter/receiver and a computer captures and converts the feedback into a digital image (FDA, 2016). MRIs are produced by taking multiple sectional images or “slices” and producing a three-dimensional image (Pressman 2016). The MRI technique is the best method to capture soft tissue such as the brain and spinal cord. The best part about an MRI is that it does not require the patient to be exposed to ionized radiation. There are some negative aspects to consider regarding an MRI. According to Pressman (2016) MRIs can take a long time to complete. The patient must lie still for a long time, and movement or metal can cause the image to become distorted. Patients with metal

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.

When radiological examination is recommended by a physician, the expected benefit received from the test will outweigh the potential radiation risks involved. MRI uses strong magnetic fields to align atomic nuclei (usually hydrogen protons) within body tissues, then uses a radio signal to disturb the axis of rotation of these nuclei and observes the radio frequency signal generated as the nuclei return to their baseline states.MRI scans do not expose patients to radiation, but the high force magnetic field used can cause significant problems if proper precautions are not met. Magnetic force used can cause metallic devices or implants to malfunction or be dislocated with the body. Images can be distorted by metal and electronic objects outside the body, due to interfere with the magnetic field of the MRI unit. Over exposure and unnecessary use of these imaging modalities can cause health risk.

The MRI has made a great impact in many areas of modern medicine, it has become an important piece of technology in medical practice and research. With the ultrafast imaging, images of the areas of interest can be obtained quickly with the elimination of psychological motion artifacts. Magnetic Resonance removes the need

When reviewing the literature, various studies ended with suggested areas of future research. These areas included the creation of MR LINACs that are ready for clinical use (Lagendijk, et al., 2014), which sites should be treated with MR LINACs (Wojcieszynski et al, 2017) (Bainbridge et al, 2016) as well as what the ideal configuration of gantry and magnet would be (Keall et al, 2014).

Now technology has sky rocketed and scientists have more advanced technology! One of those powerful tools is called the MRI- “Magnetic resonance imaging MRI uses a magnetic field and radio waves to produce detailed images of brain anatomy quickly. The technique employs magnets to detect signals from the nuclei of hydrogen atoms, which consist of single protons that spin like tops. In a strong magnetic field, the protons become aligned and spin in the same direction. If the aligned protons are then zapped with radio waves at a certain frequency, the spinning hydrogen nuclei tip over and wobble. Turn off the radio wave, and the nuclei return to their upright state while emitting weak radio

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