How Long Does a Low-Dose CT Scan Take?

Ever wondered how long a low-dose CT scan takes? Maybe your doctor mentioned it in passing, or maybe you’ve been putting it off, thinking it’ll eat up your entire afternoon. Spoiler alert: it won’t. In fact, you might spend more time in the waiting room than under the scanner.

At NextGen Diagnostic Imaging, we know your time is valuable. That’s why we’re breaking it all down—what to expect, how long it really takes, and why low-dose CT scans are becoming the gold standard for safer, quicker imaging.

What Is a Low-Dose CT Scan?

A low-dose CT scan (LDCT) is a specialized version of a regular CT scan that uses significantly less radiation to create high-quality images of your body. It’s primarily used for things like lung cancer screenings, chronic cough, or tracking abdominal abnormalities.

How It Differs From a Standard CT Scan

The major difference? Radiation levels. A low-dose CT scan uses about 70% less radiation than a traditional scan, while still giving doctors the detailed views they need. That’s a big deal if you’re undergoing routine screening or monitoring an ongoing issue.

Why Doctors Recommend Low-Dose CT Scans

LDCTs are fast, safe, and accurate. That’s why they’re often recommended for preventive care, particularly for those at risk of lung cancer, or anyone requiring frequent imaging.

The Benefits of Less Radiation

Radiation adds up over time. That’s why reducing exposure—without sacrificing diagnostic accuracy—is such a win. It’s like switching from frying your food to using an air fryer: same crispy results, way less oil.

Who Needs a Low-Dose CT Scan?

You may be a candidate for a low-dose CT scan if:

• You’re a current or former smoker aged 50+
• You’re experiencing chronic respiratory symptoms
• You’ve had abnormal results from other scans
• You’re under cancer surveillance

How to Prepare for Your Scan

Don’t worry—there’s not much prep involved, but a few small things can make your appointment go smoother and quicker.

Do You Need to Fast?

Usually, no fasting is required for a low-dose CT scan—especially if it’s a lung scan. But if you’re getting contrast dye (rare in LDCT), your doctor might ask you to avoid food for a few hours.

What to Wear and Bring

Wear loose-fitting clothing without metal (zippers, underwire bras, etc.). Metal interferes with imaging. Bring:

• Your insurance card
• Photo ID
• A list of medications (just in case)

The Day of Your Appointment at NextGen Diagnostic Imaging

Checking In and Paperwork

Once you arrive at NextGen Diagnostic Imaging, you’ll check in with our friendly front desk staff. There might be a couple of short forms to fill out—nothing major.

What Happens Before You Enter the Scan Room?

A technician will call you in, confirm your information, and explain the process. This usually takes 5–10 minutes tops. Then it’s off to the scan room.

How Long Does a Low-Dose CT Scan Actually Take?

The Short Answer

The low-dose CT scan itself typically takes just 2–5 minutes. That’s the part where you’re lying on the table, and the machine is actively taking images.

But don’t forget about the few minutes you’ll spend checking in, getting situated, and speaking with the technician. When you factor in everything, the entire visit from walking in to walking out usually takes about 20–30 minutes max. And at NextGen Diagnostic Imaging, we work hard to keep everything smooth and efficient—so you’re not stuck waiting around.

To put it into perspective: you’ll probably spend less time getting your scan than ordering and waiting for your coffee at a busy café.

Breaking Down Each Step

Let’s walk through the full experience so you know exactly where your time is going—and why it’s all worth it.

Pre-Scan Setup (5–10 Minutes)

Once your name is called, a CT technician will escort you to the scan room. You might be asked a few brief health-related questions to confirm safety and check for any recent changes (like if you’re pregnant or recently had another scan).

You’ll be asked to remove metal items—jewelry, belts, watches, eyeglasses—since they can interfere with the imaging. If you’re wearing clothing with metal zippers or buttons, you might be asked to change into a gown (but that’s rare if you dress smart).

Then, you’ll lie down on the scanner table. The technician will help position your body precisely based on the area being scanned—chest, abdomen, etc. They may use soft foam blocks or cushions to keep you comfortable and still during the scan.

Why this matters: Proper positioning ensures the clearest images in the shortest time. If you’re comfortable and steady, the scan goes faster and you won’t need retakes.

The Scan Itself (2–5 Minutes)

This is the part most people stress about—but it’s really the quickest and easiest part of the whole visit.

The CT scanner is shaped like a big donut, and the table slides you slowly through the center. It’s open on both ends—so if you’re worried about claustrophobia, don’t be. You’re not enclosed.

You might hear a few mechanical sounds or whirring noises as the machine captures detailed cross-sectional images of your body. These are completely normal.

Your technician might ask you to hold your breath for a few seconds at certain points to reduce motion blur, especially if you’re getting a chest scan. Don’t worry—they’ll talk you through it with clear instructions.

The best part? You don’t feel a thing. No pain. No pokes. No sedation.

Before you know it, they’ll tell you—you’re done!

Post-Scan Wrap-Up (5 Minutes or Less)

After the scan, you’ll be helped off the table. There’s no recovery room. No need to rest. No side effects.

You can head right back to work, school, errands, or wherever your day takes you.

At NextGen Diagnostic Imaging, we’ll usually tell you when to expect your results—typically within 24–48 hours. If the scan was urgent, your doctor may receive a preliminary report even faster.

You’ll be free to go, feeling confident that the process was fast, painless, and highly effective in giving your doctor exactly what they need.

Pro tip: Ask your tech any final questions before you leave—they’re happy to explain next steps or what the images will help diagnose.

Does the Scan Duration Vary by Body Area?

Chest, Abdomen, or Head? Here’s What to Expect

Most low-dose CT scans are used for the chest (lungs), but occasionally they’re done on other areas. Timing stays about the same:

• Chest (lungs): 2–5 minutes
• Abdomen or pelvis: 5–7 minutes if more images are needed
• Head: Not typically done as LDCT, but still under 10 minutes

What Makes NextGen Diagnostic Imaging Different?

Fast Service, Friendly Techs, and Advanced Machines

At NextGen Diagnostic Imaging, we’re not just about fast scans—we’re about making the experience comfortable, efficient, and human.

• Our state-of-the-art scanners deliver crystal-clear images faster
• Our team is trained to reduce wait times and increase patient comfort
• We explain everything in plain language—no confusing jargon

Plus, we’re conveniently located for Houston residents and proudly serve neighborhoods like Gulfton, Sharpstown, and beyond.

Common Myths About CT Scan Times

“It Takes an Hour!” and Other Misconceptions

Let’s bust a few myths:

• “CT scans take forever.” Nope—under 5 minutes for most low-dose scans.
• “I’ll have to change into a gown.” Not always! If you dress smartly (no metal), you’ll likely stay in your own clothes.
• “There’s a long recovery time.” Not at all. You’re in and out with no downtime.

Tips to Make Your Visit Faster and Smoother

Arrive Early, Ask Questions, Breathe Easy

Here are some pro tips:

• Arrive 10–15 minutes early to complete any paperwork without stress.
• Ask questions if you’re unsure—our staff is happy to help.
• Breathe normally and relax. Staying still during the scan helps it go faster.

NextGen Diagnostic Imaging Serving the Shenandoah 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 Shenandoah. With its convenient location near landmarks such as the Academia De Ingles – Quick Learning and major intersections like Southwest Fwy (Toll road) & Hornwood Dr. (coordinates: 29.712207089193782, -95.50416447400343), we offer cheap diagnostic imaging centers Houston services.

Get Cheap Diagnostic Imaging Centers Houston at Shenandoah Now

Navigate from Shenandoah to NextGen Diagnostic Imaging Now

Don’t Let Time Be a Barrier to Better Health

A low-dose CT scan isn’t just fast—it’s life-saving. At NextGen Diagnostic Imaging, our streamlined process means you’ll be in and out before your coffee gets cold.

So don’t wait. If your doctor recommends a scan, book it. With LDCT, the time you spend could help add years to your life—and it might just be the quickest 20 minutes of your day.

FAQs

Q1: Can I eat before a low-dose CT scan?
Yes, in most cases. Unless your doctor instructs you to fast (e.g., if contrast dye is involved), you’re good to go.

Q2: Will I need someone to drive me home after the scan?
Nope. There’s no sedation or recovery needed. You can drive yourself, go back to work, or hit the grocery store after.

Q3: Is there any pain during the scan?
Not at all. The scan is painless, non-invasive, and over in minutes.

Q4: Can I get results the same day?
At NextGen Diagnostic Imaging, most scan results are reviewed within 24–48 hours. Urgent findings may be reported sooner.Q5: How much radiation is involved in a low-dose CT scan?
It’s typically about 70–90% less radiation than a standard scan. Safer, especially for repeated screenings.