Invention of CT-scan?

The first computerized axial tomography scanner which was created by British Engineer Sir Godfrey Hounsfield of EMI laboratories in 1972. He co-invented the technology independently with physicist Dr. Allan Cormack (1919 - 1998) a South African American physicist both research was later on jointly awarded the 1979 Nobel prize in physiology and medicine. By 1981 Hounsfield was knighted and become Sir Godfrey Hounsfield.

CT-scan introduction?
A computed tomography or CT-scan refer to computerized x-ray image used in radiology to get detailed image of the body noninvasively for diagnostic purpose


Why doctor prefer CT-scan?
Purpose of CT-Scan:
  • CT-scan can detect diagnose infections, muscle disorders, bone and joint problem
  • if you have a condition like cancer, heart disease, emphysema, or liver masses, CT-scan can fleck it or help doctor see any changes
  • they show internal injuries and internal bleeding
  • study the blood vessels and other internal structure
  • they can help located a tumor, blood clot, excess fluid, or infection
  • guide procedures, such as surgeries and biopsies
  • Doctors can compare CT-scan to find it out it certain treatment are working


Procedure of CT-scan?

  • During the test you lying on a table that slides in and out of the center of the CT scanner
  • A healthcare provider may inject the contrast dye intravenously into your veins. This dye can make you feel have a metallic taste in your mouth
  • The X-ray source and X-ray detectors are located on opposite sides of the scanner's ring, or gantry
  • The bed slowly moves into the doughnut-shaped scanner.
  • your movement can create blurry image so you need to stay as still as possible
  • the gantry will rotate around you, sometimes while you move through the scanner's tunnel
  • The scanner takes pictures of the area the healthcare provider needs to see
  • When the exam is over, the table moves back out of the scanner


Risk of CT-scan:

  • Increased lifetime risk of cancer
  • Skin reddening
  • tissue injury
  • Hair loss
  • Birth defects if used during pregnancy


Computed tomography (CT-scan) use X-rays which produce ionizing radiation. Research shows that this kind of radiation may damage your DNA and lead to cancer but the risk is less the chance of fatal cancer but radiationís effect adds up over your lifetime. So your risk increases with every CT scan you get radiation may be more harmful in children and if you are pregnant tell you physician. If you need imaging for your stomach area, your doctor may recommend an exam that doesnít use radiation, such as an ultrasound.