Radiology: X-ray and Body Essay

efficient, safer, and easier ways of doing the tasks we may face. From moving cargo, to

To begin with, how has technology changed the field of radiology? Since the discovery of X-radiation there has been a need and desire for studying the human body and the diseases without actually any intervention. Over the past fifty years there has been a revolution in the field of radiology affecting medicine profoundly. “The ability to

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.

Have you ever had an x-ray taken or perhaps had a sonogram done? If so then you probably met a radiologic technologist. A radiologic technologist is a person that is trained in using x-ray and ultrasound imaging technology as a diagnostic tool or as a part of a patient’s treatment plan. A radiologic technologist creates images of specific areas and parts of the human body, including bones, tissue, blood vessels, and organs. They may also perform such imaging procedures such as mammography, x-rays, sonography, computed tomography (CT), and magnetic resonance imaging (MRI). Radiologic technologists work under the supervision of radiologists trained to read and interpret medical

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

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

When the radiofrequency is emitted into the MRI machine, it causes the nuclei in a selected area of the patient’s body to undergo Nuclear Magnetic Resonance; in which the nuclei’s magnetic spin splits and begin to spin in their upwards/downwards orientations. Once the magnetic field is turned off, the nuclei return to their ‘ground’ state (original spin position) and release energy. This process is known as ‘resonance’. The energy released from the nuclei has varying degrees of intensity, and when the radiofrequency pulse is switched on and off in a rapid motion, it allows the MRI machine to construct images via a computer. As humans consist mostly of water (hydrogen nuclei) - which produce the strongest NMR signals - we are able to measure the hydrogen nuclei density in a patient’s body this way. The higher the hydrogen nuclei density, the brighter the image produced will appear on the

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

Magnetic resonance imaging (MRI) - a tomographic method of investigation of internal organs and tissues using the physical phenomenon of nuclear magnetic resonance.

However, despite the usefulness of this technique, there are still concerns about its accuracy and possible side effects. To determine the effectiveness of MRIs requires carefully examining the various benefits and drawbacks. This will be accomplished by conducting a study that is concentrating on a number of areas to include: the search strategy, overview of the literature, methodologies and applications. Together, these different elements will highlight the strengths and the weaknesses of using MRI technology in a modern health care setting. (Shellock, 1999)

The spatial resolution is 1.0 mm, and the temporal resolution is usual several seconds. All useful planes of images including axial, sagittal, and coronal planes can be used to visualize the morphology and function of the segment of the body being visualized since MRI scanners can detect motion. This makes MRI particularly useful for a wide variety of diagnoses of disorders throughout the entire body. MRI does not use ionizing radiation to generate images. However, MRI can be prohibitively expensive for patients and take several hours to complete.

MRI creates precise images of the body based on the varying proportions of magnetic elements in different tissues. Very minor fluctuations in chemical composition can be determined. MRI images have greater natural contrast than standard x rays, computed tomography scan (CT scan), or ultrasound, all which depend on the differing physical properties of tissues. This sensitivity allows MRI to distinguish fine variations in tissues deep within the body. MRI is also particularly useful for spotting and distinguishing diseased tissues (tumors and other lesions) early in their development.

Brain Imaging techniques allow doctors and researchers to view activity and detect problems without having to have invasive surgery.They are immensely popular in the field of psychology , they provide the opportunity to study the active brain and allows researchers to see where brain processes take place. Brain imaging techniques are also helpful when studying localisation of function in a living human brain. Brain scans only provide correlation between behaviour and brain activity not causation. MRI ( Magnetic Resonance Imaging ) uses magnetic fields and radio waves to produce 3D computer-generated images. It distinguishes between different types of soft tissue and allows researchers to see different structures within the brain. Some strengths

The results of an MRI scan can be used to help diagnose conditions, plan treatments and measure how effective previous treatment has been.

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