Who is the inventor of CT Scan?
Answers: Sir Godfrey N. Hounsfield,INvented Ct's He won the 1979 Nobel Prize in Medicine for inventing computed axial tomography, died Aug. 12.
Heres closely more info if you need it : http://www.diagnosticimaging.com/dinews/...
CT scan
Reviewed by Dr Sarah Burnett, consultant radiologist, Professor Alastair J Munro, professor of radiation oncology and Dr John Pillinger, GP
What is a CT scanner?
A CT (computerised tomography) scanner is a special humane of X-ray machine. Instead of sending out a single X-ray through your body as near ordinary X-rays, several beam are sent simultaneously from different angles.
How does a CT scanner work?
The X-rays from the beams are detected after they hold passed through the body and their strength is measured.
Beams that have passed through smaller quantity dense tissue such as the lungs will be stronger, whereas beams that enjoy passed through denser tissue such as bone will be weaker.
A computer can use this information to work out the relative density of the tissues examined. Each set of measurements made by the scanner is, in effect, a cross-section through the body.
The computer processes the results, displaying them as a two-dimensional picture shown on a monitor. The technique of CT scan was developed by the British inventor Sir Godfrey Hounsfield, who be awarded the Nobel Prize for his work.
What are CT scans used for?
CT scan are far more detailed than ordinary X-rays. The information from the two-dimensional computer metaphors can be reconstructed to produce three-dimensional descriptions by some modern CT scanners. They can be used to produce virtual images that show what a surgeon would see during an operation.
CT scan have already allowed doctors to inspect the inside of the body lacking having to operate or act unpleasant examinations. CT scanning have also proven invaluable in pinpointing tumours and planning treatment near radiotherapy.
What is the CT scanner used for?
The CT scanner was originally designed to pocket pictures of the brain. Now it is much more advanced and is used for taking pictures of virtually any division of the body.
The scanner is particularly obedient at testing for bleeding within the brain, for aneurysms (when the wall of an artery swells up), brain tumours and brain damage. It can also find tumours and abscess throughout the body and is used to assess types of lung disease.
In addition, the CT scanner is used to look at internal injuries such as a torn kidney, spleen or liver; or bony injury, conspicuously in the spine. CT scan can also be used to guide biopsies and therapeutic niggle procedures.
How is a CT scan prepared for?
If the patient is reception an abdomen scan, for example, they will be asked not to munch through for six hours before the oral exam. They will be given a drink containing gastrografin, an aniseed flavoured X-ray dye, 45 minutes before the procedure. This make the intestines easier to see on the pictures.
Sometimes a liquid X-ray dye is injected into the vein during the test. This also make it easier to see the organs, blood vessels or, for example, a tumour. The injection might be for a moment uncomfortable, and some empire also experience a feeling of high temperature in their arm.
How is a CT scan carried out?
The scanner looks resembling a large doughnut. During the scan the lenient lies on a bed, with the body section under nouns placed in the round tunnel or slit of the scanner. The bed then moves slowly backwards and forwards to allow the scanner to pilfer pictures of the body, although it does not touch the patient. The length of the oral exam depends on the number of pictures and the different angles taken.
Does a CT scan hurt?
The examination does not hurt but some society find it uncomfortable to slouch in the tunnel. As here is little room inside the tunnel, people who suffer from severe claustrophobia sometimes hold problems with CT scan.
Let the doctors and radiographers know if this might be a problem. Other people return with slightly nervous because of the whirr noise the gadget makes while working.
Is a CT scan treacherous?
Far more X-rays are involved in a CT scan than within ordinary X-rays, so doctors do not recommend CT scan without a fitting medical reason. Some patients may experience side effects due to allergic reaction to the liquid dye injected into the vein.
In very in danger of extinction cases, this dye has be known to deface already weakened kidneys. It is significant to let the X-ray doctors or technicians know if you hold any allergies, asthma or kidney trouble, prior to having the X-ray dye injected.
How is a CT scan read?
A CT scan can provide the doctor a much clearer picture of the inside of the body than an ordinary X-ray. For example, different types of tissue such as bone, muscle and fatty tissue are natural to see on a CT scan. When looking at the abdomen, the scan shows a variety of organs such as the pancreas, spleen and liver.
When it is necessary to look at the brain, the areas containing fluid - the ventricles - are also clearly defined. Very small shadows on the lungs can also be detected using CT and there are immediately studies looking into using it as a screening test for lung cancer.
Based on a manuscript by Dr Carl J Brandt
Last updated 12.09.2005
Godfried Hounsfield, who won the Nobel Prize for computed axial tomography.
The medicine and strength information post by website user , ByeDR.com not guarantee correctness , is for informational purposes only and is not a substitute for medical guidance or treatment for any medical conditions.
Related Questions and Answers