ASTROMEDICS Health Library · Updated 28 October 2026
General patient education, not a diagnosis or an individual treatment plan. A qualified clinician should assess your symptoms and advise you.
What image guidance means
A needle or catheter guided by imaging can be used for several different investigations and treatments. Preparation for a biopsy is not necessarily the same as preparation for a drainage or blood-vessel procedure.
Image-guided procedures use imaging such as ultrasound, CT or X-ray to help guide a needle or catheter.
The procedure, preparation and recovery vary; patients should confirm fasting, medicines, transport and follow-up instructions with their own team.
Confirm instructions and follow-up
Tell staff about allergies, medicines, health conditions and possible pregnancy before imaging/procedure.
Ask how and when results will be communicated and whom to contact if symptoms worsen.
Preparing for the next step
Write down the exact procedure name, the area being treated and the reason it is needed. Ask whether sedation is planned and whether someone must accompany you. Follow your team’s instructions about fasting and medicines rather than copying advice for a different procedure.
Questions for your consultation
- Which imaging method will guide my procedure?
- Who should I contact if pain, bleeding or fever develops?