Imaging Guide
A Patient's Field Guide
The right scan, in the right order — that's the whole secret.
X-ray, ultrasound, MRI, or CT? Different tissues need different pictures. This guide explains what each test shows, why order matters, and how Dr. Gray decides — so you walk into your visit already understanding the plan.
Why do we need imaging?
A thorough exam comes first. Imaging confirms the plan.
When you visit Dr. Gray for hand, wrist, or elbow pain, a careful physical examination is the most important step. Imaging then looks beneath the skin to confirm a diagnosis, plan for surgery, or rule out serious conditions. Patients often ask, "Why can't we just get an MRI?" The reality is that different tissues — bones, tendons, nerves, and ligaments — require different types of imaging to be seen clearly. In many cases, an MRI is not the best first step.
X-Rays
The first step for almost everything: bones, joints, arthritis, fractures.
CHAPTER 02Diagnostic Ultrasound
Real-time, painless imaging of nerves and tendons — the Gray Way first-line test.
CHAPTER 03MRI
The soft-tissue specialist for ligaments, TFCC, and surgical planning.
CHAPTER 04CT Scans
The 3D bone map for complex fractures and healing checks.
CHAPTER 05Kids' Fractures
Growth plates, buckle fractures, and when "minor" is actually urgent.
Quick Reference
Which imaging do I need?
| Suspected issue | Best imaging tool | Why |
|---|---|---|
| Broken bone / arthritis | X-Ray | Fast, clear view of bone structure and joint spacing |
| Carpal tunnel / tendinitis | Ultrasound | Real-time, painless view of nerve swelling and tendon gliding |
| Complex wrist ligament tear (TFCC) | MRI | Highly detailed view of deep soft tissues |
| Shattered wrist fracture | CT Scan | 3D mapping of bone fragments for surgical planning |
Common Questions
Imaging FAQs
Why can't I just get an MRI right away?
Different tissues need different pictures. MRI does not show bone as sharply as X-ray, and it is so sensitive that it often reveals changes that are normal aging rather than the cause of your pain. An exam and X-ray first usually gets a faster, cheaper, and more accurate answer — MRI is added when it will genuinely change the plan.
Do I need an EMG to diagnose carpal tunnel?
Often, no. Dr. Gray frequently uses painless in-office ultrasound to see the nerve directly and measure whether it is swollen. Research shows ultrasound is highly accurate for carpal tunnel syndrome. EMG is reserved for selected cases where the extra functional information matters.
Are X-rays safe for my child?
Yes — X-rays use a very small radiation dose and are the standard first test for children's injuries. The bigger issue is interpretation: children's growth plates can mimic fractures, and subtle injuries like buckle or growth-plate fractures are easy to miss without specialist review.
What should I bring to my appointment?
If you have had imaging elsewhere, bring the disc or a link to the images — not just the written report. Seeing the actual images lets Dr. Gray form his own interpretation and often avoids repeat studies.
Not sure which test you need?
Start with an exam. Dr. Gray will order the right imaging, in the right order.
References
- Fowler JR, Gaughan JP, Ilyas AM. The sensitivity and specificity of ultrasound for the diagnosis of carpal tunnel syndrome: a meta-analysis. Clin Orthop Relat Res. 2011;469(4):1089-94. PubMed
- Fowler JR, Cipolli W, Hanson T. A comparison of three diagnostic tests for carpal tunnel syndrome using latent class analysis. J Bone Joint Surg Am. 2015;97(23):1958-61. PubMed
- American Academy of Orthopaedic Surgeons. X-rays, CT scans, and MRI scans. OrthoInfo
Chapter 01 — X-Rays (Radiographs)
The first step for almost everything
X-rays are the foundation of orthopedic imaging. They use a very small amount of radiation to create pictures of dense structures — primarily your bones.
What X-rays are best for
- Identifying broken bones (fractures) and dislocations
- Evaluating joint spacing to diagnose arthritis
- Spotting bone spurs, calcifications, or foreign bodies such as glass or metal
- Screening for structural problems before ordering more advanced imaging
Why not skip straight to MRI?
An MRI does not show bone detail as sharply as an X-ray. If you have severe arthritis, a simple X-ray shows it immediately — saving you the time, cost, and discomfort of an MRI. Even when Dr. Gray suspects a soft-tissue injury such as a tendon tear, he will almost always order an X-ray first to make sure no underlying bone problem, like an avulsion fracture where a tendon pulls off a small piece of bone, is contributing to your symptoms.
Chapter 02 — Diagnostic Ultrasound
Dynamic, real-time imaging
Diagnostic ultrasound uses high-frequency sound waves to create images of your soft tissues. It is the same safe, radiation-free technology used during pregnancy.
What ultrasound is best for
- Diagnosing nerve compression, such as carpal tunnel or cubital tunnel syndrome
- Evaluating tendon gliding, inflammation (tendinitis), or tears
- Examining lumps, bumps, and cysts, such as ganglion cysts or lipomas
The Gray Way: ultrasound as a first-line test
For nerve compression like carpal tunnel syndrome, Dr. Gray frequently uses diagnostic ultrasound in the office rather than sending you for an EMG (electromyogram) or nerve conduction study. Ultrasound lets him actually see the nerve — measuring its cross-sectional area for swelling and checking whether surrounding structures are compressing it. Published research shows ultrasound is highly accurate, far more comfortable than the needles and shocks of an EMG, and provides immediate answers during your visit (Fowler et al., see references on the overview page).
Chapter 03 — MRI (Magnetic Resonance Imaging)
The soft-tissue specialist
An MRI uses a powerful magnetic field and radio waves to create highly detailed, cross-sectional images of your body. It does not use radiation.
What MRI is best for
- Identifying deep, complex soft-tissue injuries
- Evaluating the TFCC (triangular fibrocartilage complex) in the wrist
- Assessing the scapholunate ligament and other intricate wrist ligaments
- Diagnosing early bone death (avascular necrosis) or hidden fractures that X-rays miss
Why don't we order it right away?
MRIs are expensive, time-consuming, and can be uncomfortable if you are claustrophobic. More importantly, MRIs are so sensitive that they often reveal "abnormalities" that are actually normal signs of aging — not the cause of your pain. Dr. Gray relies on his clinical exam first; an MRI is ordered when the diagnosis remains unclear after an exam and X-rays, or when surgical planning requires a detailed map of the soft tissues.
Chapter 04 — CT Scans (Computed Tomography)
The 3D bone map
A CT scan takes multiple X-rays from different angles and uses a computer to combine them into detailed, three-dimensional cross-sectional images.
What CT is best for
- Complex fractures, especially in the wrist — distal radius and scaphoid fractures
- Planning surgery when bone is broken into multiple pieces
- Confirming whether a fracture has fully healed (bone union)
If an X-ray shows a complex break, Dr. Gray may order a CT scan to see exactly how the bone fragments are positioned. This 3D map is crucial for deciding whether surgery is necessary and exactly how to put the pieces back together.
Chapter 05 — Children's Fractures
Growing bones read differently
Children's bones are softer, more flexible, and contain growth plates — areas of developing cartilage near the ends of long bones. That changes both how they break and how their X-rays must be read.
What makes kids different
- Buckle (torus) fractures — a child's softer bone may buckle or bend rather than break cleanly across
- Growth-plate (physeal) fractures — need careful evaluation because injury here can affect how the bone grows
- Growth-plate look-alikes — normal growth plates can mimic fractures on X-ray; specialist review distinguishes development from injury
✶ Red flag: the Seymour fracture
A fingertip injury with a broken nail and a growth-plate fracture underneath — a Seymour fracture — looks minor but is an urgent surgical problem: the nail bed can become trapped in the fracture and lead to infection and growth disturbance. If your child has a crushed fingertip with bleeding around the nail, seek care promptly. Read more on the Seymour fracture page.
