Advanced imaging is where diagnostic costs concentrate. A general practice radiograph is a few hundred dollars; a neurological MRI is a four-figure investigation that requires referral, general anaesthesia and a specialist to interpret it. Knowing which modality answers which question prevents paying twice.
The price ladder
Radiographs: $150 to $350 for two views at a general practice. Best for bone, lung and gross soft-tissue silhouette.
Ultrasound: $250 to $500, or $400 to $700 with a board-certified radiologist. Best for abdominal organs, pregnancy, fluid and guided sampling.
CT: $800 to $1,800 depending on region and whether contrast is used. Best for complex bone, nasal disease, lung nodules and surgical planning.
MRI: $1,500 to $3,000. Best for brain, spinal cord and soft-tissue detail. Always requires general anaesthesia, which adds $200 to $500.
Why the sequence matters
A dog with hindlimb weakness may need radiographs first (cheap, rules out gross orthopaedic disease), then an MRI if neurological. Skipping to MRI because “it is the best scan” can produce a beautiful image of the wrong thing.
Conversely, repeating radiographs three times to avoid a CT is more expensive than the CT. The clinical question should determine the modality, not the price list.
| Modality | Cost | Best for |
|---|---|---|
| Radiographs | $150–$350 | Bone, lung, gross silhouette |
| Ultrasound | $250–$700 | Abdominal organs, fluid, sampling |
| CT | $800–$1,800 | Complex bone, nasal, lung nodules |
| MRI | $1,500–$3,000 | Brain, spinal cord, soft tissue |
| Anaesthesia add-on | +$200–$500 | CT and MRI |
The anaesthesia factor
CT and MRI require general anaesthesia in almost all cases. That adds pre-anaesthetic bloodwork, an anaesthetist, monitoring and recovery time — 30 to 50% on top of the scan fee for a high-risk patient.
Brachycephalic breeds and cardiac patients carry additional anaesthetic risk, which some referral centres price in explicitly.
How policies treat imaging
Diagnostic imaging is covered as part of the condition being investigated, subject to deductible and limit. There is no separate “imaging benefit” on most products.
Exception: some policies exclude CT and MRI unless specifically listed, or cap them at a sub-limit. Check the schedule before authorising a $2,500 scan.
- Imaging costs span a factor of twenty between modalities.
- The clinical question should choose the scan, not the budget.
- Anaesthesia adds 30–50% to CT and MRI.
- Some policies sub-limit or exclude advanced imaging.
Before authorising a $2,500 MRI, ask the clinician one question: what treatment decision will this change? If the answer is “none, we would treat supportively either way”, the scan is diagnostic curiosity, not clinical necessity.
Key takeaways
- Each modality answers a different question.
- Repeating cheap imaging is more expensive than one correct scan.
- Anaesthesia is a material addition to CT and MRI.
- Check the schedule for imaging sub-limits before authorising.
