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Editorial note: This article was prepared for this website from the sources listed below. Unless a named clinical reviewer is shown, it has not been attributed to or clinically reviewed by an individual KPMC clinician.
Different tests answer different questions
X-rays use ionising radiation and are commonly used for bones and the chest. CT uses X-rays to create detailed cross-sectional images. Ultrasound uses sound waves and does not use ionising radiation. The best test depends on the clinical question, not simply which machine is most advanced.
Information to share before imaging
Tell the team if you may be pregnant, have allergies, kidney problems, diabetes, implanted devices, or a previous reaction to contrast. Follow instructions about eating, drinking and medicines. Do not stop prescribed medicine unless the referring or imaging team tells you to.
After the test
A radiology report describes imaging findings for the referring clinician, who considers them alongside your history, examination and other tests. Ask when the report should be available and whom to contact. Incidental findings may sometimes require follow-up.
At a glance
Key takeaways
- The right scan is chosen for a specific clinical question.
- Always mention possible 怀孕 and previous contrast reactions.
- Arrange review of the report with the clinician who requested the test.
When to seek care
- Get urgent help after contrast if you develop breathing difficulty, facial or throat swelling, collapse or a severe widespread reaction.
- 联络 the referring service if symptoms worsen while you are waiting for imaging or results.
General information only. This article does not replace medical advice, diagnosis or treatment. If symptoms are severe or rapidly worsening, seek urgent medical care. In Malaysia, call 999 for an emergency or go to the nearest emergency department.
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