Tomography Research Paper

The CT scan is a machine that uses 360-degree x-ray beam and computer to produce images that allows for cross-sectional views of body organs. Hage and Atkins indicated that the CT scan debuted in the 1970s; however, it was not until the 1990s when the machine became more affordable that the use of the CT scan become more popular. The affordability of the machine has turned it into a hot commodity in all modern hospitals and even outpatient services.

The CT scan is a tool. It is a tool for doctors to use to help people all over the world. It sometimes is key to find and illness a patient poses. Many people do not know what a CT scan is. Even more, people do not know what “CT” stands for. For those who do not know “CT” stands for, ¨Computed Tomography¨. There are way more frequent question people ask, such as, how does a CT scan help diagnose illnesses? In what ways do radiation doses affect the human body from a CT? How do a CT scan and an MRI differ? How has the CT scan evolved over time? These are all questions that are the most frequently asked. What these people are trying to say to the confused is simple. Basically, the CT scan is helping our doctors figure out the mysteries of the human body.

Radiology, the process of working and viewing inside the human body without breaking the skin. By using radiant energy, which may take the form of x rays or other types of radiation, we are able to diagnose and treat many diseases and injuries. Both diagnostic and therapeutic radiology involve

Magnetic Resonance Imaging Magnetic resonance imaging has the potential of totally replacing computed tomography. If history was rewritten, and CT invented after MRI, nobody would bother to pursue CT. --Philip Drew (Mattson and Simon, 1996)

In both X-rays and CT scans, a form of radiation is emitted and travels through the body, and a detector receives the unabsorbed rays and transmits them to a computer. The physics behind PET scanning is quite different. Basically, a person is injected with a radioactive substance. This substance begins the process of

4. List and describe the procedures done in the Computed Tomography department. As with MRI, Computed Tomography can also be used to scan the body from head to toe. The procedures performed in CT can be either invasive or non-invasive and are used to visualize both soft tissues and bone. CT is utilized for both biopsies and drainage studies. This modality uses algorithms to produce scans of the various body parts, which need to be changed when imaging soft tissues versus bone tissue. A CT scan can also produce 360 degree images with just one scan.

Pam: How do You Become a CAT Scan Technologist? Anyone who wants to become a CAT scan technologist will need to complete a degree that is accredited by the Joint Review Committee on Education in Radiologic Technology (JRCERT). Fortunately, there are almost 600 accredited radiology programs in the country. These include two-year degrees in radiology technology that include classes in radiation safety, medical terminology, patient positioning, radiographic procedures and anatomy and physiology.

According to the World Health Organization, "Annually, worldwide, more than 3,600 million X-ray examinations are performed" ("Medical"). The life of radiologic technologist is not an easy job. These technologists are responsible for accurately positioning a patient to produce a well quality, diagnostic image. In other words, they help produce the best x-ray image possible. Although this career has its perks of diagnosing different conditions, working with physicians, and benefitting from the many specialty programs associated with radiology (Alan), there are also downfalls to the job. Professor in Radiologic Technology, Alan Schiska of MSSU stated, "Some disadvantages of this career would be the lifting of the patients, the stress of the job,

Radiology technicians work in the field of diagnostic medicine. X-ray Technologists have been trained to do diagnostic tests by using different medical imaging devices such as: x-rays, CT scans and MRI’S. They are trained to use doctor’s orders to get the information to do the correct diagnostic imaging best for the patient. Using the proper notes from the doctor you can get the correct angle of the bone or place of origin to get a clear imaging for the proper diagnosis. With increasing population comes a higher demand in the medical world.

PET Scan- A PET [positron emission tomography] scan is only had at major hospitals. It is most commonly carried out on patients with lung cancer were a biopsy wasn 't possible/inconclusive. Before having this scan you will be injected with a radioactive glucose solution, which takes roughly about 30-90 minutes to spread around the body, and once it spread the scan can commence. Its scans for hot spots in the body where active cells located, such as cancer cells. Although all activity doesn 't necessarily mean there are cancer cells that 's why you must have a specialist to examine the PET scan.

The PET scanning is particularly useful in detecting cancer because most cancer cells use more glucose than normal tissues. In lung cancer, pet scans are sometimes used to observe for cancer in particular areas such as the lymph nodes, in the chest or to demonstrate the spreading activity of cancer cells to other areas the body. This would help the doctor to take a further decision about the treatment of a

When comparing CT and PET in the identification of metastatic lymph nodes, FDG PET is more accurately able to detect abnormal patterns (Sauter). CT has high anatomical resolution and assesses lymph nodes based on criteria such as axial diameter and abnormal shape. Whereas, FDG has a lower spatial resolution but relies on the metabolic information derived from the lymph node to detect metastasis. The sensitivity and specificity of FDG-PET is 85% and 90% respectively, which is much higher than that of CT in accurately determining lymph node metastasis

Clinical applications of PET in neurological and cardiological fields do also exist [2]. For example, joint PET and CT brain scans are used to diagnose Alzheimer’s disease (see figure 10) [18]. Other uses of PET

Positron-Emission Tomography (PET scans) Positron-Emission Tomography (PET) scan is a medical test that allows doctors to check the human body for any diseases. Doctors use the PET scan for many things, the main uses are checking for cancer, heart-related (Cardiovascular) diseases and brain (neurological) diseases. It also allows doctors to check organs and tissues and to see how they are working. PET scanners are a way of tracking diseases, using radioactive tracking that is injected into a vein in your arm, that is then absorbed by your organs and tissues.

Furthermore, the cost of Nuclear Imaging is relatively high and, as a result, is not being commonly installed in hospitals. The reason is the necessity of having the PET facility close to a cyclotron since the useful radioisotopes have small half-lives; thus the time between its production and the final injection must be small. In this way, the optimal use of high levels of radioactivity during the first few half-lives can be utilised to produce high-quality images (Andrew Olesnicky, Neville Lawrence,