computerized tomography: meaning, definition, pronunciation and examples
Low to Medium (high in medical/technical contexts, low in everyday conversation)Technical, Medical, Academic
Quick answer
What does “computerized tomography” mean?
An imaging technique that uses computer-processed X-ray measurements to generate detailed cross-sectional images (slices) of the body.
Audio
Pronunciation
Definition
Meaning and Definition
An imaging technique that uses computer-processed X-ray measurements to generate detailed cross-sectional images (slices) of the body.
A non-invasive diagnostic procedure used extensively in medicine to visualize internal structures, identify abnormalities, guide procedures, and monitor treatment. The term can also refer to the machine (CT scanner) itself or the resulting images.
Dialectal Variation
British vs American Usage
Differences
Spelling: British English predominantly uses 'computerised tomography'. American English uses 'computerized tomography'. Abbreviation 'CT' is universal.
Connotations
Identical medical meaning. The term 'CAT scan' (Computed Axial Tomography) is a slightly older synonym, more common in historical or lay American contexts.
Frequency
'CT scan' is the overwhelmingly most common term in both dialects for everyday reference to the procedure.
Grammar
How to Use “computerized tomography” in a Sentence
perform a CT on [patient/body part]order a CT for [patient]visualize [structure] via CTthe CT showed [finding]Vocabulary
Collocations
Examples
Examples of “computerized tomography” in a Sentence
adjective
British English
- The computerised tomography findings were reviewed by the consultant.
- We need a computerised tomography-guided biopsy.
American English
- The computerized tomography results were uploaded to the portal.
- It was a computerized tomography-based diagnosis.
Usage
Meaning in Context
Business
Rare, except in contexts of medical device manufacturing, sales, or healthcare administration (e.g., 'The hospital invested in a new CT scanner.')
Academic
Very common in medical, biomedical engineering, and radiology research papers and textbooks.
Everyday
Used when discussing medical tests, diagnoses, or personal health experiences (e.g., 'I need to get a CT scan for my back pain.').
Technical
The primary register. Used with precision to describe scan protocols, findings, and technological specifications.
Vocabulary
Synonyms of “computerized tomography”
Strong
Weak
Vocabulary
Antonyms of “computerized tomography”
Watch out
Common Mistakes When Using “computerized tomography”
- Misspelling 'tomography' as 'tomography'.
- Using 'scan' redundantly with the full term (e.g., 'CT scan scan').
- Confusing CT with MRI (Magnetic Resonance Imaging), which uses magnets, not X-rays.
FAQ
Frequently Asked Questions
No. While both use X-rays, a standard X-ray produces a single, flat 2D image where structures overlap. A CT scan uses a rotating X-ray source and computer processing to create multiple cross-sectional 2D slices, which can be combined into a 3D model, offering much greater detail and eliminating overlap.
CT scans are much faster (seconds to minutes), excellent for visualising bones, blood vessels, and internal bleeding, and are often used in emergencies. MRI is better for soft tissue detail (e.g., brain, ligaments) but takes longer and is not suitable for patients with certain metal implants. CT also uses ionising radiation, while MRI does not.
Contrast is a special dye (usually iodine or barium-based) given orally, via enema, or intravenously. It highlights specific blood vessels, organs, or tissues, making them appear brighter on the scan images and helping radiologists distinguish between normal and abnormal structures more clearly.
The main risk is exposure to a low dose of ionising radiation, which carries a very small potential long-term cancer risk. This risk is outweighed by the diagnostic benefit when the scan is medically justified. Other risks include allergic reactions to contrast dye and, rarely, kidney issues from the contrast in susceptible individuals.
An imaging technique that uses computer-processed X-ray measurements to generate detailed cross-sectional images (slices) of the body.
Computerized tomography is usually technical, medical, academic in register.
Computerized tomography: in British English it is pronounced /kəmˈpjuːtəraɪzd təˈmɒɡrəfi/, and in American English it is pronounced /kəmˈpjudəˌraɪzd təˈmɑːɡrəfi/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Computerized Tomography = Computer + Tomo (Greek for 'slice') + Graphy (Greek for 'writing') -> A computer writes pictures of your body in slices.
Conceptual Metaphor
A high-tech 'slicing bread' machine for the human body, creating digital slices instead of physical ones.
Practice
Quiz
What is the primary technological basis of computerized tomography?