How To Prepare For A CT Scan

A CT scan might sound intimidating at first, but trust us — it’s nothing to stress over once you understand what’s involved. If you’ve been scheduled for one, you probably have a few questions: Can you eat beforehand? What should you wear? Will it hurt? And if you’re having it done at NextGen Diagnostic Imaging, you’re already in good hands.

In this guide, we’ll walk you through exactly how to prepare for a CT scan — what to expect, what to bring, and how to make sure the experience is as smooth and stress-free as possible.

What Is a CT Scan and Why Do I Need One?

A CT scan, or computed tomography scan, is a medical imaging procedure that allows doctors to see detailed, cross-sectional views of your body. Think of it as looking at your body layer by layer. This scan combines multiple X-ray images using computer processing to give a 3D-like view of organs, bones, blood vessels, and soft tissue.

So why would your doctor order a CT scan? There are many reasons:

• To diagnose conditions like tumors, infections, or blood clots
• To evaluate injuries from accidents or falls
• To guide biopsies and other surgeries
• To monitor the effectiveness of ongoing treatment
• To detect abnormalities when symptoms are unclear

At NextGen Diagnostic Imaging, CT scans are performed daily using state-of-the-art equipment designed to deliver high-resolution images while keeping your exposure to radiation low.

Types of CT Scans You Might Encounter

Not all CT scans are the same. Knowing which kind you’re getting will help you prepare appropriately.

Common CT Scan Types

• Head CT Scan – Often used for stroke evaluation, headaches, or trauma.
• Chest CT Scan – Used to examine lungs, heart, and chest vessels.
• Abdominal and Pelvic CT – Helps diagnose digestive issues, cancers, or kidney stones.
• CT Angiography – A contrast-enhanced scan used to visualize blood vessels.

The type of CT scan impacts your preparation — especially when contrast dye is involved (we’ll explain that shortly).

Before the Scan: Talk to Your Doctor First

The best preparation begins with a conversation.

Ask These Questions:

• What part of my body is being scanned?
• Will the scan involve contrast dye?
• Do I need to fast or avoid certain medications?
• Are there risks specific to my health condition?

This is also the time to share any allergies, medical history, or pregnancy concerns with your doctor. If you’re diabetic or have kidney problems, your care team may make special arrangements to protect your health during the scan.

At NextGen Diagnostic Imaging, the staff double-checks all this information before your appointment, ensuring your scan is both safe and effective.

Food, Drink, and Medications: What’s Allowed?

The rules around food and drink depend heavily on whether your scan will include contrast dye.

CT Scan Without Contrast

If your scan doesn’t use contrast dye, you’ll likely be able to eat and drink normally beforehand. Still, it’s always smart to double-check.

CT Scan With Contrast

Contrast dye requires a bit more caution. You’ll likely be told to fast for at least 4 to 6 hours before the scan. That means no food and only a small sip of water if you need to take medication.

Should You Take Your Medications?

Yes — most medications are fine to take as usual. However, if you’re on metformin (a common diabetes medication), your doctor may ask you to stop it temporarily before and after the scan, especially if contrast is being used. That’s because contrast dye is processed by your kidneys, and combining it with certain meds could be risky.

What Should You Wear to a CT Scan?

You don’t need a fashion show — but you do need to be practical.

Wear Loose, Comfortable Clothing

• Avoid zippers, buttons, or anything metallic
• Yoga pants, sweatshirts, and T-shirts are perfect
• Leave valuables at home

You may be asked to change into a gown, but the less metal you wear, the less likely you’ll have to.

Remove Metal Accessories

CT scans don’t play nice with metal. Before your scan, you’ll need to remove:

• Jewelry (including piercings)
• Watches and belts
• Hairpins or barrettes
• Eyeglasses or dentures, if applicable

What Is Contrast Dye — and Why Is It Important?

Contrast dye helps highlight certain areas of your body, making them more visible on the scan. It’s used in scans of the brain, heart, lungs, and digestive system.

Types of Contrast

• Oral: You drink a flavored liquid before your scan
• IV (intravenous): Injected into a vein during the scan
• Rectal: Less common, used for certain abdominal imaging

If you’re receiving contrast, the team at NextGen Diagnostic Imaging will walk you through the entire process — from fasting instructions to potential side effects (which are usually mild, like a warm flush or metallic taste).

What Happens During the CT Scan?

Let’s get into the experience itself.

You’ll Lie on a Table

Once you’re in the scan room, you’ll lie down on a table that slides slowly through a large donut-shaped machine. The technologist will operate the scanner from another room but can communicate with you through an intercom.

You’ll Be Asked to Stay Still

Movement blurs the images, so staying still is key. For some scans, you may be asked to hold your breath for a few seconds.

How Long Does It Take?

The entire process usually takes 15 to 30 minutes, depending on the body area being scanned and whether contrast is used.

After the Scan: Is There Recovery Time?

No downtime necessary!

Most people return to their normal routine right away. If you had contrast dye, you’ll be encouraged to drink lots of fluids to help your kidneys flush it out. Side effects are rare, but if you feel itchy, dizzy, or short of breath, call your provider immediately.

How to Prepare for Your CT Scan at NextGen Diagnostic Imaging

Now that you know the general steps, here are a few pro tips to make your visit to NextGen Diagnostic Imaging even smoother:

1. Arrive 15–20 Minutes Early

There may be forms to fill out or updates to your records. Being early helps avoid feeling rushed.

2. Bring the Essentials

Pack your:

• Photo ID
• Insurance card
• Referral or order form from your doctor
• List of current medications

3. Ask Questions Freely

The staff at NextGen Diagnostic Imaging are known for their warm, professional care. Don’t be shy — they’ll happily answer any questions you have.

NextGen Diagnostic Imaging Serving the Mahatma Gandhi District Community and Beyond in Houston

NextGen Diagnostic Imaging is dedicated to serving the diverse needs of the local community of Houston, including individuals residing in neighborhoods like Mahatma Gandhi District. With its convenient location near landmarks such as the Benavidez Elementary School and major intersections like Gulfton St. & Westward St. (coordinates: 29.716704099999987, -95.4938099), we offer ct scan services Houston.

Get CT Scan Services Houston at Mahatma Gandhi District Now

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Relax — You’ve Got This

Getting a CT scan isn’t anyone’s idea of fun. But once you know what to expect and how to prepare, it’s way less scary. Whether it’s your first scan or your fifth, following these simple steps will help everything go smoothly.

And with the compassionate professionals at NextGen Diagnostic Imaging guiding you through every phase, you’re not just in good hands — you’re in expert ones.

FAQs

1. Do I need to fast before all CT scans?
Not necessarily. You’ll only need to fast if contrast dye is involved. Always confirm with the imaging center.

2. Can I bring someone with me to the appointment?
Yes, but they’ll likely have to wait outside the scan room. It’s always helpful to bring someone if you’re nervous or need help with transportation.

3. What does the contrast dye feel like?
You might feel a warm sensation, a flush, or a strange taste in your mouth. These are normal and usually fade fast.

4. Are CT scans safe?
Yes. They use low levels of radiation and are considered very safe, especially when done under professional care like at NextGen Diagnostic Imaging.

5. Can I take my normal medications before a CT scan?
In most cases, yes. Just double-check with your doctor about specific medications like metformin or blood thinners.