1.
contrast agent; contrast medium
A substance administered before or during a medical imaging procedure (X-ray, CT, MRI, or ultrasound) to make certain tissues or blood vessels show up more clearly on the resulting images. Common examples include iodine-based agents for X-ray/CT and gadolinium-based agents for MRI.
検査の前に造影剤を注射した。
Before the exam, they injected a contrast agent.
造影剤を使うと血管がはっきり写る。
Using a contrast agent makes the blood vessels show up clearly.
造影剤に対するアレルギーがある方は、事前にお申し出ください。
If you have an allergy to contrast agents, please let us know in advance.
Composed of 造影 ("producing an image," from 造る + 影, originally "making a shadow" for X-ray imaging) + 剤 ("agent, preparation"). A standard medical term encountered in hospitals, on consent forms, and in health-insurance paperwork.
USAGE:
- Administered by injection, oral ingestion, or (for some imaging) by enema, depending on the exam.
- Patients are typically asked about kidney function and allergies before administration, since contrast agents can provoke allergic reactions and iodine-based agents are processed by the kidneys.
- 造影 alone is also used as a verb-forming element: 造影する, "to perform contrast imaging."
COMMON COLLOCATIONS:
- 造影剤を使う: to use a contrast agent
- 造影剤を注射する: to inject a contrast agent
- 造影剤アレルギー: contrast-agent allergy
- 造影剤の副作用: side effects of the contrast agent
- ヨード造影剤: iodine-based contrast agent
RELATED TERMS:
- 造影: contrast imaging (the procedure)
- 造影CT: contrast CT
- 造影MRI: contrast MRI
- 検査: examination, test
- 副作用: side effect
- アレルギー: allergy
- 注射: injection