We Can Detect Cancer Years Earlier — So Why Aren’t We?
Establish a baseline scan of your body now. When imaging is done longitudinally with AI analyzing patterns over time, false positive rates drop from 64% to below 10%. Context is everything—more prior information about your biology means faster, cheaper, and more accurate future scans. Don't wait for
1h 6mKey Takeaway
Establish a baseline scan of your body now. When imaging is done longitudinally with AI analyzing patterns over time, false positive rates drop from 64% to below 10%. Context is everything—more prior information about your biology means faster, cheaper, and more accurate future scans. Don't wait for symptoms to appear; track changes before disease develops.
Episode Overview
Dr. Daniel Sodickson, chief medical scientist at Function Health and former chief of innovation in radiology at NYU, discusses how medical imaging is undergoing a revolutionary shift from reactive diagnosis to proactive health monitoring. He explains how longitudinal scanning combined with AI can dramatically reduce false positives, enable earlier disease detection, and make imaging faster and more affordable over time.
Key Insights
The Power of Longitudinal Imaging: Context Reduces False Positives
Traditional one-time imaging has high false positive rates (64% in prostate cancer prediction). When AI models incorporate prior scans, blood tests, and clinical data over time, false positive rates drop to below 10%—an order of magnitude improvement. Context is everything in medicine.
More Imaging Makes Future Scans Faster and Cheaper
Once you have a baseline scan, AI can generate high-quality images using 20-30 times less data and scanning time. The neural network already knows your anatomy; it only needs to detect changes. This means future scans can be dramatically faster, cheaper, and potentially done with lower-power machines.
The 'Everywhere Scanner' Vision: From Hospital to Home
With sufficient baseline data, follow-up imaging could be done with low-cost scanners in CVS stores, chairs, beds, or even wearable devices. These cheaper devices would only need to measure change, not create complete images from scratch, making continuous health monitoring feasible.
We're at a Telescope Moment in Medical Imaging
This isn't an incremental change—it's a quantum shift comparable to the invention of the telescope. Modern imaging allows us to 'dissect the body without making a single cut,' and when combined with AI and big data, we can predict disease decades before symptoms appear.
Proactive vs. Reactive Medicine: Don't Wait for Symptoms
Traditional medicine waits for symptoms before ordering scans, often finding disease too late. With modern imaging, we can detect changes that predict Alzheimer's decades before memory loss, or cancer years before it becomes invasive. The paradigm is shifting from diagnosis to prevention.
Notable Quotes
"These miraculous devices we've built are important to understand cuz they're going to change our lives. Maybe we don't need to wait for a doctor to have already found a problem."
"Wait a second, if we can see this stuff, maybe we don't need to wait for a doctor to have already found a problem. And I think that's this cusp that we're on where medical imaging is really changing."
"I think everybody should have a baseline. You talked about this moment that we're in, which is comparable to the invention of the telescope. Not just an incremental change, but more of a quantum change."
"The more we image you, the faster we can scan you next time. If we've only if this is the first time we're seeing you, we need a requisite amount of data. But if we've seen you before, this time we trained another neural network whose job is to take those different views and assemble them into a set of images."
"Context is everything. If we have the context, maybe we don't need these big multi-million dollar tubes. Once we've seen you at least once, maybe we can put something in a chair, in a bed, in a CVS, in your home, at drastically reduced cost."
Action Items
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1
Establish Your Imaging Baseline Now
Get a full-body MRI scan to create your baseline. This initial scan becomes the foundation for all future comparisons, dramatically improving accuracy and reducing false positives. Don't wait for symptoms—establish what 'normal' looks like for your body today.
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2
Aggregate Your Health Data in One Platform
Consolidate all your health information—lab results, imaging, medical history, wearables data—into a single platform like Function Health. Fragmented data across multiple providers limits the power of AI and pattern recognition. Your biology should be tracked longitudinally, not episodically.
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3
Embrace Knowledge Over Fear
If you're avoiding genetic testing or screening because you're afraid of what you'll find, reframe your thinking. Risk genes (like APOE4 for Alzheimer's) are not destiny—they're predispositions. Knowing your risks empowers you to optimize diet, exercise, sleep, stress management, and nutrient levels proactively.
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4
Think of Your Body Like Your Car Dashboard
Your car has sensors tracking hundreds of data points continuously. Your body deserves the same level of monitoring. Use comprehensive blood testing, imaging, and wearables to create your personal health dashboard—don't rely solely on annual check-ups that miss 99% of what's happening.