May 26, 2026
Quick answer: A Prenuvo brain scan detects structural changes (atrophy, tumors, white-matter lesions) but is not optimized for vascular imaging. A dedicated Brain MRA with gadolinium contrast is the clinical standard for detecting cerebral aneurysms and stroke-risk lesions. In the US, an elective Brain MRA costs $2,500–$5,800 out-of-pocket. In Taiwan via New Dawn Health, the same scan starts at $699 USD, or $3,099 as part of a 4-hour multi-modality Plus Package.
As preventive imaging becomes more accessible, individuals are increasingly using advanced MRI techniques to detect early-onset neurological and vascular conditions. Two prominent options in this space are the Prenuvo Brain Health Assessment and a dedicated Brain MRA (Magnetic Resonance Angiogram) with contrast. Both use magnetic resonance technology, but they answer fundamentally different clinical questions.
This article explains what each modality actually detects, when each is appropriate, what they cost in the US versus Taiwan, and how to choose. If you are evaluating preventive brain imaging in 2026, the choice is rarely "Prenuvo or nothing" — for cerebrovascular risk you specifically need an MRA.
Prenuvo's brain protocol is primarily a structural and volumetric assessment. Using software such as NeuroQuant®, it quantifies the volume of specific brain structures — most notably the hippocampus — to detect early signs of brain atrophy associated with neurodegenerative conditions like Alzheimer's disease or dementia. It is also effective at identifying gross structural abnormalities such as tumors, cysts, and white-matter hyperintensities.
What it is not designed to detect, with the resolution required for clinical decisions, are abnormalities in the intracranial vasculature itself.
A Brain MRA (Magnetic Resonance Angiogram) is specifically optimized to visualize intracranial blood vessels. While a standard MRI focuses on brain tissue, an MRA focuses on the blood flowing through the arteries.
The introduction of a gadolinium-based contrast agent significantly enhances image resolution, allowing radiologists to clearly delineate vessel walls and blood-flow dynamics. This modality is the clinical standard for detecting:
Because a standard structural screening is not optimized for high-resolution vascular mapping, a dedicated MRA with contrast is required to comprehensively evaluate cerebrovascular risk.
| Dimension | Prenuvo Brain Scan | Brain MRA with Contrast |
|---|---|---|
| Primary detection | Brain atrophy, tumors, structural lesions | Aneurysms, AVMs, vascular stenosis |
| Contrast agent | No | Yes (gadolinium) |
| Volumetric analysis (NeuroQuant®) | Yes | No |
| Vascular resolution | Limited | High |
| US out-of-pocket price | $2,499 (brain only, US locations) | $2,500–$5,800 |
| Taiwan via New Dawn Health | Not directly offered (use Full-Body MRI alternative) | $699 standalone |
| Best for | Cognitive decline / early dementia screening | Stroke / aneurysm risk evaluation |
In the United States and several other Western countries, obtaining an elective, preventive Brain MRA with contrast presents two structural barriers:
Insurance providers typically do not cover asymptomatic screening MRAs. Approval generally requires documented neurological symptoms — chronic migraines, focal deficits, or a strong family history of aneurysms. If you are healthy and want a preventive scan to rule out a silent aneurysm, you are usually paying out-of-pocket.
For individuals opting for self-pay preventive scans, a standalone Brain MRA with contrast at a US hospital or private imaging center routinely costs $2,500 to $5,800 USD. The wide range reflects facility type (hospital vs imaging center), region, and whether radiologist interpretation is bundled.
That price barrier is what drives many proactive patients to look at international screening platforms.
Taiwan's healthcare infrastructure is globally recognized for advanced medical technology, strict quality control, and highly integrated screening centers. Through New Dawn Health, international patients can access premium diagnostic imaging at specialized partner clinics and tertiary hospitals.
For patients seeking a focused evaluation, a high-resolution Brain MRA with contrast is available standalone for approximately $699 USD.
For individuals seeking a broader systemic evaluation, the New Dawn Health Plus Package provides extensive multi-modality screening priced at $3,099 USD. This comprehensive 4-hour assessment includes:
Routing diagnostic imaging through a managed platform offers several clinical advantages:
The right choice depends on what you are actually trying to rule out:
The Prenuvo Brain Health Assessment provides valuable baseline data on structural brain aging and neurodegeneration. However, for individuals seeking to definitively assess their risk for ischemic stroke or silent intracranial aneurysms, a dedicated Brain MRA with contrast remains necessary. Accessing this specialized modality in Taiwan provides a clinically equivalent, highly cost-effective alternative to domestic self-pay options.
If you are weighing your options, the easiest next step is to talk with the New Dawn Health team about your specific risk factors — or review the Plus Package and standalone Brain MRA options directly.
In nearly all cases, no. US insurers typically require documented neurological symptoms (severe chronic migraines, focal deficits, sudden onset headaches) or a strong first-degree family history of cerebral aneurysm before approving a Brain MRA. Healthy individuals seeking a preventive scan generally pay out-of-pocket — that is the gap Taiwan-based screening fills.
A Brain MRI images brain tissue (cortex, white matter, ventricles, tumors, lesions). A Brain MRA images the blood vessels — specifically the arteries — using either time-of-flight sequences or contrast-enhanced imaging. They are complementary; you can have a normal MRI and an abnormal MRA, or vice versa. If aneurysm or stroke risk is the question, MRA is required.
For patients with normal kidney function, modern macrocyclic gadolinium agents have an excellent safety profile and are routinely used in millions of scans annually. Risk groups include patients with severe kidney impairment (eGFR < 30) or a history of nephrogenic systemic fibrosis. New Dawn Health partner clinics perform pre-scan kidney function checks as part of standard intake.
The MRA scan itself runs 30–45 minutes including positioning and contrast administration. Total clinic time, including intake, IV placement, and post-scan radiologist briefing, is typically 90–120 minutes. If you choose the Plus Package (Brain MRA + Full-Body MRI + Coronary CT + Lung CT), plan for approximately 4 hours on-site.
Yes. You receive both the English-language radiologist report and the full DICOM imaging files, which any US radiologist or neurologist can open in standard medical imaging software. This is by design — Taiwan-based preventive imaging is most useful when it integrates cleanly into your existing US care relationship.