imager

/ˈi-mi-jər/ (ame, mw)

imager — noun

1. a person, device, or system that creates a visual representation or picture of s

1.名詞B2
釋義

a person, device, or system that creates a visual representation or picture of something.

例句

The satellite imager sends back high-resolution pictures of the coastline every six hours.

collocation: satellite imager

Mei-Lin works as a medical imager at the city hospital, preparing scans for the radiology team.

person sense: medical imager as a job title

同義詞
  • scanner

    more specific — refers only to devices that digitise physical objects or body parts; not used for a person

  • camera

    more common in everyday use; 'imager' is more technical and less frequent in general conversation

用法筆記

Sense 1 is the broadest meaning and can refer to either a person (e.g. a radiographer, imaging scientist) or a device (e.g. a camera, scanner). Context usually makes the referent clear.

常見錯誤

❌The imager took a photo of the sunset' (when referring to a person).
✅The photographer used an imager to capture the sunset.
💡'imager' for a person describes a professional role, not a casual user of a camera.

2. a specialised machine found in hospitals or clinics that produces visual images

2.名詞C1
釋義

a specialised machine found in hospitals or clinics that produces visual images from inside a patient's body, helping doctors identify and examine injuries or diseases.

例句

The radiologist turned on the MRI imager and asked the patient to lie very still.

After Dr. Okonkwo reviewed the images from the CT imager, he scheduled the surgery for the next morning.

collocation: CT imager

同義詞
  • scanner

    more common in everyday hospital language; 'imager' is the more formal technical term

  • imaging machine

    a descriptive paraphrase that is less concise; 'imager' is the standard technical noun

用法筆記

Frequently modified by a preceding modality name (CT imager, MRI imager, ultrasound imager). In casual hospital speech, staff often shorten 'MRI imager' to 'MRI' or 'scanner'.

常見錯誤

❌The doctor used an imager to listen to my heartbeat.
✅The doctor used an ultrasound imager to check my heart.
💡'imager' always produces a visual picture, not sound.

3. a high-precision instrument used in research or technical fields that detects si

3.名詞C2
釋義

a high-precision instrument used in research or technical fields that detects signals from a target and converts them into extremely detailed visual data for analysis.

例句

The thermal imager on the telescope detected heat patterns from a distant star cluster.

collocation: thermal imager

Chen's team deployed a hyperspectral imager on the research drone to map mineral deposits across the desert.

compound: hyperspectral imager

同義詞
  • imaging system

    broader term that may include the full setup of hardware and software; 'imager' typically refers to the core detection-and-display unit

  • sensor

    overlaps in meaning but a sensor may only detect without producing an image; an imager always generates a visual output

用法筆記

Restricted to formal scientific or technical writing. In research papers, the instrument is usually named by its specific modality (thermal imager, electron imager, hyperspectral imager) rather than the bare noun 'imager'.