CT Scan

Subject – Science and Tech

Context – The first computed tomography image — a CT scan — of the human brain was made 50 years ago, on October 1, 1971.

Concept –

The first computed tomography image — a CT scan — of the human brain was made 50 years ago, on October 1, 1971.
A CT scan, or computed tomography scan, sends radiation through the body. However, unlike a simple X-ray study, it offers a much higher level of detail, creating computerized, 360-degree views of the body’s structures.
CT scans are fast and detailed. They take longer than X-rays but are still fast (about one minute). This makes them ideal for emergency situations.
CT scans can spot:
- Blood clots
- Bone fractures, including subtle fractures not visible on X-ray
- Organ injuries
- Tumors
- Cancer monitoring
A computerized tomography (CT) scan is usually a series of X-rays taken from different angles and then assembled into a three-dimensional model by a computer.

CT scan vs. MRI

CT scans are more widely used than MRIs and are typically less expensive.
MRIs, however, are thought to be superior in regards to the detail of the image. The most notable difference is that CT scans use X-rays while MRIs (use radio waves) do not.