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Going For a CT Scan
What is a CT Scan?
A Computed Tomography (CT) scan is a medical imaging technique used to create detailed images of the inside of the body. It utilises X-rays and computer technology to generate cross-sectional views of bones, blood vessels, and soft tissues, which help doctors diagnose and monitor various conditions. CT scans are particularly useful for visualising complex structures that traditional X-rays cannot fully capture.
Preparing for Your CT Scan
Before your appointment, you may be asked to follow specific instructions to ensure the scan's accuracy. These can include fasting for a certain period, avoiding certain medications, and removing any metal objects such as jewellery. Your healthcare provider will inform you of any requirements based on the type of CT scan you are undergoing. It's also essential to inform your doctor if you are pregnant or have any allergies, especially to contrast materials used during some CT scans.
What to Expect During the Procedure
During the CT scan, you will be asked to lie on a motorised table that slides into the CT scanner, which is a large, doughnut-shaped machine. You may need to stay still and at times hold your breath while images are taken to avoid blurring. The procedure is painless, but some patients may feel a bit claustrophobic. If a contrast dye is required, it might be administered orally or injected, and you may experience a brief warm sensation or a metallic taste.
Post-Scan Considerations
After the CT scan, you can generally resume normal activities immediately unless otherwise advised by your healthcare provider. If you received a contrast dye, it's crucial to stay hydrated to help flush it out of your system. Your doctor will inform you about when to expect results and will discuss the findings with you, including any further actions if necessary. Generally, results are available within a few days, but this can vary depending on the complexity of the scan.
Frequently Asked Questions
Will It Hurt?
No, the CT scan itself is painless. Some discomfort might arise from having to lie still or from the contrast dye.
How Long Does It Take?
The scan typically lasts between 10 to 30 minutes. However, preparation and waiting times may extend your visit to an hour or more.
Is It Safe?
CT scans involve low levels of radiation, which are generally considered safe for most individuals. However, they are not usually recommended for pregnant women due to potential risks to the unborn child.
Frequently Asked Questions
What is a CT scan?
A CT (computed tomography) scan is a diagnostic medical imaging test that uses X-rays and computer technology to create detailed images of the inside of your body.
Why do I need a CT scan?
A CT scan can help diagnose various conditions, plan medical or surgical treatment, and monitor the effectiveness of treatment.
How do I prepare for a CT scan?
Preparation depends on the type of CT scan you are having. Generally, you may need to avoid eating or drinking for a few hours before the scan. You should also remove any metal objects, such as jewellery, as they can affect the images.
Can I take my medication before a CT scan?
You should continue to take prescribed medication unless advised otherwise by your doctor. If you are unsure, consult your healthcare provider.
Will I need a contrast dye?
Depending on the type of scan, you may need a contrast dye to highlight certain areas of your body. This is usually given through an injection or orally.
What should I expect during the CT scan?
You will lie on a table that slides into a large, doughnut-shaped machine. The radiographer will control the scanner from another room but communicate with you via an intercom. You need to stay still, and you may be asked to hold your breath for short periods.
How long does a CT scan take?
A CT scan typically takes about 10 to 30 minutes, depending on the part of the body being examined and whether a contrast dye is used.
Are there any risks associated with a CT scan?
CT scans do involve exposure to a small amount of radiation. However, the benefits of an accurate diagnosis generally outweigh the risks. If you are pregnant or have any concerns, discuss them with your doctor.
What should I do after the CT scan?
You can usually return to your normal activities immediately after the scan. If you had a contrast dye, you might be advised to drink plenty of fluids to help flush it out of your system.
When will I get my CT scan results?
A radiologist will analyze the images and send a report to your referring doctor, who will discuss the results with you. This process may take a few days.
Can I eat and drink after my CT scan?
Yes, you can resume eating and drinking as normal unless advised otherwise by your healthcare provider, particularly if a contrast dye was used.
Will the CT scan be uncomfortable?
The scan itself is generally painless. You may feel a slight discomfort from lying still or from the injection of the contrast dye.
Can I drive after my CT scan?
Yes, you can drive unless you've been given a sedative or advised otherwise. If you feel unwell after the scan, it’s best to arrange for someone to drive you home.
What if I am claustrophobic?
If you have claustrophobia, inform your doctor and the radiographer before the scan. They can provide support and, if necessary, a mild sedative to help you feel more comfortable.
Is a CT scan available on the NHS?
Yes, CT scans are available on the NHS. Your doctor will refer you if they think you need one. Alternatively, you can choose to have the scan done privately.
Useful Links
Useful links from: Having a CT Scan at Stoke Mandeville Hospital - Buckinghamshire Healthcare NHS Trust
- Buckinghamshire Healthcare NHS Trust - CT Scan Official page for CT scans at Buckinghamshire Healthcare NHS Trust, providing information on how to prepare and what to expect.
- NHS - CT scan NHS page detailing what a CT scan is, how it works, why it's used, and what happens during the procedure.
- Macmillan Cancer Support - CT Scan Information provided by Macmillan Cancer Support about CT scans, including how they are done, what to expect, and potential results.
- Cancer Research UK - CT scan Detailed information from Cancer Research UK on what CT scans are, their uses in diagnosing cancer, and what patients can expect.
Useful links from: So, you're having a CT scan...
- NHS - CT scan Comprehensive overview of CT scans, including how they're performed, why they're done, and what to expect.
- Cancer Research UK - CT scans Information on CT scans, how they work, and their role in diagnosing cancer from Cancer Research UK.
- British Heart Foundation - CT scans Detailed description of CT scans, their use in diagnosing various heart conditions, and what patients can expect.
- NHS Inform - CT scan Resource provided by NHS Inform with detailed information about CT scans, the process, reasons, and preparation.
Useful links from: Having a CT scan in Hospital - What's it like having a CT scan at Bedford Hospital?
- CT scan - NHS An overview of what a CT scan is, why it is used, and what happens during the procedure on the NHS website.
- Bedford Hospital Radiology Information about the Radiology department at Bedford Hospital, including details about various imaging services such as CT scans.
- Cancer Research UK - CT Scan Detailed information from Cancer Research UK about CT scans, including how they work, what to expect, and their role in diagnosing cancer.
- British Heart Foundation - Cardiac CT Insight from the British Heart Foundation on what a cardiac CT scan involves, why it's needed, and how to prepare for the procedure.
Useful links from: Having a CT Scan in Tayside
- NHS Tayside - CT Scan Information Official NHS Tayside page detailing what to expect during a CT scan, preparation instructions, and contact information for any queries.
- NHS Inform - CT Scan NHS Inform provides a comprehensive guide on CT scans, including how they are performed, risks, benefits, and how to prepare.
- Macmillan Cancer Support - Scans Macmillan Cancer Support offers detailed information on CT scans, especially for those who are undergoing cancer treatment, with a focus on how to prepare and what to expect.
- British Heart Foundation - Understanding CT Coronary Angiogram The British Heart Foundation provides information on CT coronary angiograms, explaining the procedure, why it's used, and any associated risks.
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