How to prepare a dog for MRI for IVDD

Written by Oh My Tail Team 

Published on: 21 March 2026

Disclaimer: This article is for educational purposes only and does not replace professional veterinary advice, diagnosis, or treatment. If your dog shows signs such as pain, weakness, difficulty walking, dragging the paws, loss of coordination, or other sudden mobility changes, seek veterinary care promptly. In the UK, contact your local veterinary practice or ask for a referral to a specialist such as a veterinary neurologist or orthopaedic surgeon. Early assessment is important for spinal conditions such as Intervertebral Disc Disease (IVDD) and other neurological disorders.

 

What is an MRI and why does my dog need it for IVDD?

An MRI, or magnetic resonance imaging, is a scan that gives veterinarians a detailed view of your dog’s spine and spinal discs. For dogs with suspected IVDD, an MRI is the most reliable way to see exactly which discs are damaged and how severe the problem is. Unlike X-rays, which show only bones, an MRI can reveal soft tissues, nerves, and the spinal cord itself, helping vets make accurate decisions about treatment.

Preparing your dog for an MRI doesn’t mean doing anything complicated, but knowing what to expect can make the experience smoother. Understanding why the scan is needed and how it works will give you confidence and help reduce stress for your dog. Using an MRI for IVDD diagnosis ensures that the vet has the clearest picture possible, making it easier to plan the right care.

 

How do I prepare my dog the day before an MRI?

The day before your dog’s MRI, there are a few simple steps you can take to make sure everything goes smoothly. First, follow any instructions from your vet regarding fasting or withholding food and water. This is important because dogs usually need to be under sedation for the scan, and an empty stomach reduces risks.

Make sure your dog has a calm, familiar environment at home. Avoid any vigorous exercise or stressful activities, as a relaxed dog will handle the procedure better. Check that all your dog’s medications are organised and ready, and note down any questions for the vet about pre-scan care.

By taking these small steps, you’ll be actively preparing your dog for the MRI, helping both the scan and the recovery go more safely and efficiently.

 

Should my dog eat or drink before an MRI?

Before an MRI, it’s important that your dog does not eat or drink for a certain period, usually overnight, unless your vet gives different instructions. This fasting is necessary because your dog will likely be sedated or under anaesthesia during the scan. Having an empty stomach helps prevent nausea or complications while under sedation.

Small sips of water may be allowed in some cases, but always check with your vet first. Following these pre-scan instructions carefully ensures the procedure is as safe and stress-free as possible for your dog.

 

How do I manage my dog’s medications before MRI?

Before your dog’s MRI, it’s important to review all medications with your vet. Some medicines, especially those affecting the heart, blood pressure, or sedation, may need to be paused or adjusted. Never stop or change medication on your own without veterinary guidance.

If your dog takes regular pain relief or anti-inflammatory drugs for IVDD, ask the vet whether these should be given before the scan. In some cases, the vet may advise giving a small dose, while in others, it’s better to wait until after the procedure. Clear instructions from your vet help keep your dog safe during sedation and ensure the MRI provides accurate results.

 

How can I keep my dog calm and safe before the scan?

Keeping your dog calm before an MRI is key to making the experience safe and smooth. Start by maintaining a quiet environment at home and using familiar bedding or toys to help your dog feel secure. Gentle petting and soft, reassuring talk can reduce anxiety, but avoid forcing your dog into stressful situations.

During transport to the clinic, use a secure carrier or leash, and keep movements slow and steady. If your dog has severe anxiety, discuss with your vet whether mild sedatives or calming techniques are appropriate. By managing stress and handling your dog gently, you help make the MRI procedure safer and more comfortable, ensuring accurate results.

 

What happens during the MRI procedure?

During an MRI, your dog will usually be under sedation or anaesthesia so they can stay completely still. The vet or veterinary nurse will position your dog carefully on the scanning table and make sure they are comfortable and secure.

Once the scan begins, the MRI machine uses magnets and radio waves to create detailed images of your dog’s spine and spinal discs. The process is painless, though the machine can be noisy, so dogs are monitored closely throughout. Depending on the area being scanned, the procedure usually takes between 30 and 60 minutes.

Understanding these steps helps you feel more prepared, and knowing that your dog is monitored constantly should reassure you that the MRI is both safe and effective for diagnosing IVDD.

 

How long will the MRI take and when will I get results?

A typical MRI for a dog takes around 30 to 60 minutes, depending on how many areas need to be scanned. The actual time your dog spends under sedation may be slightly longer, including preparation and positioning.

Once the scan is complete, the images are reviewed by a radiologist or specialist vet. In many clinics, you can expect initial results within a few hours, though a full report with detailed findings may take a day or two. Knowing the expected duration and timing of results helps you plan your day and reduces any anxiety while waiting for your dog’s IVDD diagnosis.

 

After the MRI: what to do once we’re home

After returning home from the MRI, your dog may still be a little drowsy or unsteady from the sedation. Keep them in a quiet, comfortable area and allow them to rest without disturbance. Avoid feeding until your vet confirms it’s safe, especially if fasting was required beforehand.

Monitor your dog for any unusual behaviour, vomiting, or discomfort, and follow any specific instructions your vet gave regarding medications or activity restrictions. Gentle reassurance and supervision are key during the first few hours. By providing careful post-MRI care, you help your dog recover safely and ensure that any next steps in managing IVDD can be taken promptly.

 

Tips to make the MRI experience easier for both of you

To make the MRI experience easier for both you and your dog, start by keeping routines calm and familiar in the days leading up to the scan. Bring a favourite toy or blanket to comfort your dog at the clinic.

Speak gently and confidently, as dogs can pick up on your stress. Plan the journey to the clinic carefully, ensuring your dog is secure and comfortable during transport. If your dog is particularly anxious, ask the vet about safe calming techniques or mild sedatives.

Following these tips helps reduce stress, keeps your dog safe, and ensures the MRI procedure goes as smoothly as possible. Being prepared and calm yourself will make a big difference in how your dog experiences the scan.

We focus on helping owners support dogs with mobility and comfort issues.

This article is for informational purposes and should not replace professional veterinary care.