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Search Results - Computed tomography

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Computed tomography (CT) is a medical imaging method employing tomography created by computer processing.[1][2] Digital geometry processing is used to generate a three-dimensional image of the inside of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation.

CT produces a volume of data which can be manipulated, through a process known as "windowing", in order to demonstrate various bodily structures based on their ability to block the X-ray/Röntgen beam. Although historically the images generated were in the axial or transverse plane, orthogonal to the long axis of the body, modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures. Although most common in medicine, CT is also used in other fields, such as nondestructive materials testing. Another example is the DigiMorph project at the University of Texas at Austin which uses a CT scanner to study biological and paleontological specimens.

The word "tomography" is derived from the Greek tomos (slice) and graphein (to write). Computed tomography was originally known as the "EMI scan" as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was later known as computed axial tomography (CAT or CT scan) and body section röntgenography.

Although the term "computed tomography" could be used to describe positron emission tomography and single photon emission computed tomography, in practice it usually refers to the computation of tomography from X-ray images, especially in older medical literature and smaller medical facilities.

Showing 1 to 11 of 11 Articles matching 'Computed tomography' in related articles.
Pages: 1

1. Fight Rosacea
October 26, 2009

A lot of elements determine lung cancer survival rates. This kind of cancer, the phase it is at once diagnosed, and the general status of the affected person altogether represent a function in ascertaining lung cancer survival rate. Cancer survival is generally verbalized in conditions of a five year survival rate, which is the percent of affected people with cancer who live at the least five years after their cancer is diagnosed.This can be detected in the following ways, chest radiography, computed tomography (CT).Diagnosed with lung cancer, and therefore confirmed the biopsy.Biopsy is nothi... (read more)

Author: Irwina Mckinnel

2. Whole-Body CT Scan Increases Chance of Survival in Severely Injured Patients
October 22, 2009

Use of whole-body computed tomography (CT) scans in early trauma care significantly increases the probability of survival in severely injured patients with polytrauma, the study published early online and appearing in an upcoming issue of The Lancet. Whilst the number of trauma centres using whole-body CT for early assessment of trauma is increasing, there is no evidence to date that the procedure has any effect on the outcome of patients with serious injuries. Stefan Huber-Wagner, MD, Munich University Hospital, Ludwig-Maximilians-University, Munich, Germany, and colleagues thus compared... (read more)

Author: vijay kanth

3. Cardiac MRI Surgery Abroad - Why Come To India - Cardiac MRI Surgery
September 17, 2009

      Cardiac MRI Detailed MR images allow physicians to better evaluate parts of the body and certain diseases that may not be assessed adequately with other imaging methods such as x-ray, ultrasound or computed tomography (also called CT or CAT scanning).   Cardiac MRI imaging is performed to help : - evaluate the structures and function of the heart, valves, major vessels, and surrounding structures (such as the pericardium).diagnose and manage coronary heart disease and a variety of cardiovascular problems.detect and evaluate coronary artery disease.plan a patient's treatment for ... (read more)

Author: Pankaj Nagpal

4. CT Angiography Surgery India - By Trained Doctor At Accred Hospital
September 17, 2009

  CT Angiography We Care India partner hospitals use a state-of-the-art multi-row detector CT scanner; the Siemens Sensation 64 Detector. A Coronary CTA (CT Angiography) is a heart-imaging test currently undergoing rapid development and evaluation for non-invasively determining whether either fatty deposits or calcium deposits have built up in the coronary arteries, which supply blood to the heart muscle.   How does Cardiac CT Angiography work ? A Coronary CTA comes from a special type of X-ray examination. Patients undergoing a Coronary CTA scan receive an iodine-containing contrast d... (read more)

Author: Pankaj Nagpal

5. CT Scan for Kidney Stones
May 20, 2008

Are you suffering from colicky pain? It is called as worst pain ever felt. You need to do the diagnosis. It may be the kidney stone. There are many ways for the diagnosis of kidney stone such as clinical diagnosis, Imaging, X-ray, IVP and retrograde pyelogram. One of the popular ways to detect is CT scan for kidney stone. CT scan or CAT scan for kidney stone stands for Computed tomography. It is considered as the essential diagnostic test to detect kidney stones. It is a specialized X-Ray test. Now a day this technique of diagnosis of kidney stone is very popular among people. Ct s... (read more)

Author: Russ Anderson

6. This Is Why You Should Do A CT Scan For Kidney Stone
April 10, 2008

Are you suffering from colicky pain? It is called as worst pain ever felt. You need to do the diagnosis. It may be the kidney stone. There are many ways for the diagnosis of kidney stone such as clinical diagnosis, Imaging, X-ray, IVP and retrograde pyelogram. One of the popular ways to detect is CT scan for kidney stone. CT scan or CAT scan for kidney stone stands for Computed tomography. It is considered as the essential diagnostic test to detect kidney stones. It is a specialized X-Ray test. Now a day this technique of diagnosis of kidney stone is very popular among people. Ct... (read more)

Author: Peter Gitundu

7. Medical Radiography Careers
March 04, 2008

Radiography has witnessed a phenomenal growth in the field of medicine. Medical radiographers are professionals who utilize imaging instruments to x-ray different parts of human body, in order to analyze health problems accurately. The process includes medical imaging actions to discover health related problems. The Radiographer performs diagnostic tests involving X-rays with fluoroscopy, computed tomography and mammography, few years back ultrasound and magnetic resonance imaging has been added to the list of specializations. Moreover, professionals also assist the patients for radiology... (read more)

Author: Dawn Pascale

8. X-Rays, CT Scans Should Not Be Used Indiscriminately
February 10, 2008

X-rays there’s no doubt can be extremely useful when properly applied on conditions like blocked coronary arteries, bad head injuries, a bone break and chest x-ray. On the other hand, x-rays can raise the risk of cancer if use indiscriminately without asking the patient when his last x-ray was done. Patients therefore are encouraged to ask critical questions before they undergo an x-ray. Patients can do something about it by asking their doctor to explain the necessity and the risks of an x-ray examination. X-rays produced ionized radiation which also occurs in nature. The effective dos... (read more)

Author: Arnold Cafe

9. Are Cardiac CT Scans Suitable For Everyone?
June 06, 2007

How do doctors determine whether their patients have developed heart problems? In the past, invasive angiogram used to be the common and unavoidable procedure doctors will employ. But now, more and more doctors are switching to cardiac computed tomography (CT) scans. It is known that there are at least 16 different types of CT scanners available nowadays in public and private hospitals. But doctors do caution that while these scanners promise a clear picture of the heart through non-invasive technology, they are not suitable for all heart disease patients. According to one cardiologi... (read more)

Author: Ng Peng Hock

10. Some facts about the diagnose and treatment of schizophrenia
May 13, 2007

At this moment, schizophrenia can not be diagnosed with the help of laboratory tests, but helpful in showing abnormal structures in the brain are some imaging techniques like computed tomography scans. These scans use X rays to create a picture of internal organs, and are sometimes called computerized axial tomography scans. It is known that the first step doctors follow in order to be able to decide if a patient is schizophrenic is ruling out other physical and mental disorders. This must be done, because there exist diseases and disorders of the brain that provoke symptoms similar with thos... (read more)

Author: Fabiola Groshan

11. How to diagnose appendicitis
April 16, 2007

Any diagnosis begins with medical history and physical examination, but there are more diagnostic procedures as following: blood tests, urine tests, abdominal ultrasound which are used to view internal organs and their functions, computed tomography scan of the abdomen with or without contrast substance shows detailed images of any part of the body: bone, muscle, fats and organs. Barium enema examines the rectum, the large intestine, x-rayed shows if there are strictures, obstructions or any other problems. Treatment Treatment is to be determined by physicians for each person regarding... (read more)

Author: Fabiola Groshan

Pages: 1


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