Tomograph . It is a perfect instrument to create a three-dimensional (3-D) representation (tomography) of internal defects
[ hide ]
- 1 Types of tomographs
- 2 helical tomographs
- 3 multi-slice tomographs
- 4 Electron ray computed tomography
- 5 Sources
Types of tomographs
The conventional CT scanner was the first to be used in 1970 . Back then, these machines were considered revolutionary. This tomograph was produced before wireless technology, so it needed large cables attached to the rotary tube. To avoid getting caught in these cables, the scanner had to be rotated in reverse after each image. This resulted in a long time for study.
Helical CT scanners were first used in 1989 and accelerated the time required for an image examination. The reason for the speed over time of the scan is due to the ability of the helical scanners to continuously rotate in one direction while patient is moving through the scanner tunnel. The higher speed of the helical tomograph also allowed obtaining thinner sections of the analyzed area, which helps the doctor in the diagnosis.
In 1998, the next generation of tomographs was introduced into the multi-slice tomograph. This machine allows doctors to capture images of various cuts during the rotation of the CT X-ray tube. This capability has accelerated the time required to complete a CT scan compared to a helical CT scanner. The images provided by multi-slice tomographs are thinner than those obtained by the helical tomography. The multi-slice scanner technology was launched in 1998, but continued to improve until 2001 .
Electron ray computed tomography
Also known as ultra-fast scanners, this scanner uses completely different technology from other scanners. An electron beam is created by a generator. This eliminates the need for moving mechanical parts and provides the fastest scan times to date. Electron beam tomography scanners were first used to analyze moving organs, such as the heart and lungs. The fast scanning capabilities of this tomograph allow you to capture still images even when the patient’s organ is moving.