Flashcards
science physics ( x-rays)
Flashcards do conjunto (8)
- 1x-rayshigh frequency, short wavelength electromagnetic waves
- 2CCD charged coupled device)silicon chips that detect x-rays and produce electronic signals which are used to form high resolution images
- 3what is the main use of x-rays ?x -rays cause ionisation which kills cells, so x-rays are used to treat cancer by carefully focusing a beam on the cancer cells
- 4how do radiographers take precaution to minimise the x-ray dosage ?1. they wear lead aprons
2. they stand behind a lead screen
3.they wear a badge that monitors their radiation levels. - 5are x-rays safe ?they are ionising and can cause cancer at high doses so it is not safe for developing babies.
- 6what is the image quality of x-rays ?they produce clear images with dense materials like bone and metal but not much else.
- 7are CT scans safe ?there is a lot more ionising radiation than standard x-rays. it is only taken in dire situations
- 8what is the image quality of CT scans ?they produce detailed image in 3D that can be used to plan for complicated surgeries or diagnose illnesses.
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- Descrição
- A level science FlashCards sobre science physics ( x-rays), criado por Sijuola Oyeneyin em 22-09-2015.
- Criado por
- Sijuola Oyeneyin
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