Vestibular & Balance
Documents inner-ear and balance-system dysfunction behind dizziness, vertigo and unsteadiness.
- Videonystagmography (VNG)
- Posturography
- VEMP
- Oculomotor testing
Physician-Led Neurotrauma Testing
Injuries you can't see.Evidence you can.
CT's and MRI's don't tell the whole story. We provide Neurotrauma testing that looks deeper.
- Dizziness & Balance
- Hearing Changes
- Brain Fog & Memory
- Physician-Led Testing
- Board-Certified Neurotologist
- Objective, Documented Findings
- Attorney-Ready Reports
- 50% Lien-Based Payment
- San Antonio & South Texas
About NTDI
Objective Testing for Symptoms After Head Trauma
Dizziness, imbalance, hearing changes or brain fog that linger after a head injury deserve real answers, especially when an MRI or CT came back normal. NTDI is a physician-led diagnostic testing center in San Antonio built for exactly these cases.
We measure what imaging can't: how the balance system, hearing and cognition are actually working, and what is driving the symptoms.
Patients get treatment recommendations matched to the cause. Attorneys get objective, clearly documented findings for their client's case.
Balance
VNG, VEMP, posturography, eye movement
Hearing
Audiometry, OAE, ABR and ECoG
Cognitive
Attention, memory, processing speed
Plain-English Report
Physician-signed findings, likely cause and treatment plan, with the full test data
For Attorneys
Real Injuries. Invisible on Imaging.
Your client has persistent dizziness, headaches, hearing changes or cognitive problems after a head trauma, but the MRI or CT is normal. The injury is real, but it's difficult to prove.
NTDI gives you objective clinical evidence to better understand, document, evaluate and present the case.
- Measurable, reproducible findings, not adjectives
- Plain-English attorney summary plus the full technical data
- 50% of testing fees accepted on a lien basis
- Expert testimony available for deposition and trial
What We Evaluate
A Comprehensive, Integrated Approach
One patient. One location. A clearer understanding.
Hearing
Measures the type and degree of hearing loss, tinnitus-related changes and inner-ear function.
- Audiometry
- Otoacoustic emissions (OAE)
- Electrodiagnostics (ABR, ECoG)
Cognitive
Measures thinking skills against normative data to document post-concussive changes.
- Attention
- Memory
- Processing speed
- Executive function
Integrated Analysis
Brings every result together into one physician-led clinical picture.
- Physician-led interpretation
- Clinical correlation
- Functional implications
The Referral Process
We Make It Simple
01
Contact Us
Call or email our office.
02
Schedule
We coordinate directly with your office and your client.
03
Evaluate
Comprehensive testing at our San Antonio location: one visit, one place.
04
Receive Report
An attorney-ready clinical summary plus the full technical data.
What You Receive
Clear. Organized. Attorney-Ready.
Every evaluation includes a one-page, plain-English clinical summary on top of the complete technical report. You can find the clinical story fast without losing the underlying data.
Illustrative composite example
Attorney Medical-Legal Summary
Objective findings following reported head trauma
What happened
Rear-end collision. CT and MRI read as normal. Persistent dizziness, imbalance, tinnitus and memory complaints.
What we tested
VNG, VEMP, posturography, audiology, oculomotor and cognitive testing.
What we found
28% left vestibular weakness · Balance at the 1st percentile · Abnormal saccades and smooth pursuit.
What it means
Reduced balance-system response from the left inner ear, extremely poor balance compared with the reference population, and abnormal eye tracking.
Clinical significance of objective findings
Objective evidence supporting the reported symptoms and functional limitations, considered together with the injury history, records and treating physicians' opinions.
Next steps
Recommendations for treatment, monitoring and follow-up testing.
Resources
Tools for Referring Attorneys
Who to Refer Checklist
A quick screening list of post-trauma symptoms that suggest testing may help.
Testing Glossary
What VNG, VEMP, OAE and other tests may objectively document, in plain English.
Sample Attorney Summary
See how findings are organized so you can find the clinical story fast.
Contact Us
Call or email our office. We coordinate scheduling with your office and client.
FAQ
Frequently Asked Questions
Answers for attorneys and patients. Still have questions? Call us at 844-DIZZY00.
For Attorneys
01What documentation do attorneys receive?
A plain-English clinical summary organized by domain, the physician's interpretation and recommendations, a causation opinion when appropriate, and the full technical data for review, deposition and trial.
02Do you accept liens?
Yes. NTDI accepts 50% of testing fees on a lien basis. Contact our office to confirm terms for a specific case.
03How do I refer a client?
Call or email our office. We coordinate scheduling directly with your office and your client.
04My client's MRI and CT were normal. Is testing still worthwhile?
Often, yes. Routine imaging shows structure; it usually can't measure how the balance, hearing and cognitive systems function. Functional testing can document abnormalities that imaging does not show.
About Testing
01What is VNG testing?
Videonystagmography (VNG) uses infrared video goggles to record eye movements while the patient follows targets, changes position and receives mild air or water stimulation to each ear. Because the inner ear and eyes are linked, abnormal eye movements can reveal vestibular dysfunction.
02Why would someone be dizzy if their imaging is normal?
Many post-traumatic balance and hearing problems involve how the inner ear and its nerve pathways function, not visible structural damage. Functional tests measure that performance directly.
03How long does an evaluation take?
Most comprehensive evaluations take [X hours] and are completed in a single visit at our San Antonio location.
Get Started
Ready to Refer a Case?
Talk with our team about whether objective testing fits your client's situation.