Artificial Intelligence is getting better than humans at detecting breast cancer
Since the early 2000s, AI systems have eliminated more than 1.7 million jobs, and that number will only increase as AI improves. Some research estimates that by 2025, AI will eliminate more than 85 million jobs.
But for all the talk about job security, AI is also proving to be a powerful tool in healthcare—specifically, cancer detection. One recently published study has shown that, remarkably, artificial intelligence was able to detect 20 percent more cancers in imaging scans than radiologists alone.
Published in The Lancet Oncology, the study analyzed the scans of 80,000 Swedish women with a moderate hereditary risk of breast cancer who had undergone a mammogram between April 2021 and July 2022. Half of these scans were read by AI and then a radiologist to double-check the findings. The second group of scans was read by two researchers without the help of AI. (Currently, the standard of care across Europe is to have two radiologists analyze a scan before diagnosing a patient with breast cancer.)
The study showed that the AI group detected cancer in 6 out of every 1,000 scans, while the radiologists detected cancer in 5 per 1,000 scans. In other words, AI found 20 percent more cancers than the highly-trained radiologists.
Scientists have been using MRI images (like the ones pictured here) to train artificial intelligence to detect cancers earlier and with more accuracy. Here, MIT's AI system, MIRAI, looks for patterns in a patient's mammograms to detect breast cancer earlier than ever before. news.mit.edu
But even though the AI was better able to pinpoint cancer on an image, it doesn’t mean radiologists will soon be out of a job. Dr. Laura Heacock, a breast radiologist at NYU, said in an interview with CNN that radiologists do much more than simply screening mammograms, and that even well-trained technology can make errors. “These tools work best when paired with highly-trained radiologists who make the final call on your mammogram. Think of it as a tool like a stethoscope for a cardiologist.”
AI is still an emerging technology, but more and more doctors are using them to detect different cancers. For example, researchers at MIT have developed a program called MIRAI, which looks at patterns in patient mammograms across a series of scans and uses an algorithm to model a patient's risk of developing breast cancer over time. The program was "trained" with more than 200,000 breast imaging scans from Massachusetts General Hospital and has been tested on over 100,000 women in different hospitals across the world. According to MIT, MIRAI "has been shown to be more accurate in predicting the risk for developing breast cancer in the short term (over a 3-year period) compared to traditional tools." It has also been able to detect breast cancer up to five years before a patient receives a diagnosis.
The challenges for cancer-detecting AI tools now is not just accuracy. AI tools are also being challenged to perform consistently well across different ages, races, and breast density profiles, particularly given the increased risks that different women face. For example, Black women are 42 percent more likely than white women to die from breast cancer, despite having nearly the same rates of breast cancer as white women. Recently, an FDA-approved AI device for screening breast cancer has come under fire for wrongly detecting cancer in Black patients significantly more often than white patients.
As AI technology improves, radiologists will be able to accurately scan a more diverse set of patients at a larger volume than ever before, potentially saving more lives than ever.
3 Futuristic Biotech Programs the U.S. Government Is Funding Right Now
Last month, at a conference celebrating DARPA, the research arm of the Defense Department, FBI Special Agent Edward You declared, "The 21st century will be the revolution of the life sciences."
Biomedical engineer Kevin Zhao has a sensor in his arm and chest that monitors his oxygen level in real time.
Indeed, four years ago, the agency dedicated a new office solely to advancing biotechnology. Its primary goal is to combat bioterrorism, protect U.S. forces, and promote warfighter readiness. But its research could also carry over to improve health care for the general public.
With an annual budget of about $3 billion, DARPA's employees oversee about 250 research and development programs, working with contractors from corporations, universities, and government labs to bring new technologies to life.
Check out these three current programs:
1) IMPLANTABLE SENSORS TO MEASURE OXYGEN, LACTATE, AND GLUCOSE LEVELS IN REAL TIME
Biomedical engineer Kevin Zhao has a sensor in his arm and his chest that monitors his oxygen level in those tissues in real time. With funding from DARPA for the program "In Vivo Nanoplatforms," he developed soft, flexible hydrogels that are injected just beneath the skin to perform the monitoring and that sync to a smartphone app to give the user immediate health insights.
A first-in-man trial for the glucose sensor is now underway in Europe for monitoring diabetics, according to Zhao. Volunteers eat sugary food to spike their glucose levels and prompt the monitor to register the changes.
"If this pans out, with approval from FDA, then consumers could get the sensors implanted in their core to measure their levels of glucose, oxygen, and lactate," Zhao said.
Lactate, especially, interests DARPA because it's a first responder molecule to the onset of trauma, sepsis, and potentially infection.
"The sensor could potentially detect rise of these [body chemistry numbers] and alert the user to prevent onset of dangerous illness."
2) NEAR INSTANTANEOUS VACCINE PROTECTION DURING A PANDEMIC
Traditional vaccines can take months or years to develop, then weeks to become effective once you get it. But when an unknown virus emerges, there's no time to waste.
This program, called P3, envisions a much more ambitious approach to stop a pandemic in its tracks.
"We want to confer near instantaneous protection by doing it a different way – enlist the body as a bioreactor to produce therapeutics," said Col. Matthew Hepburn, the program manager.
So how would it work?
To fight a pandemic, we will need 20,000 doses of a vaccine in 60 days.
If you have antibodies against a certain infection, you'll be protected against that infection. This idea is to discover the genetic code for the antibody to a specific pathogen, manufacture those pieces of DNA and RNA, and then inject the code into a person's arm so the muscle cells will begin producing the required antibodies.
"The amazing thing is that it actually works, at least in animal models," said Hepburn. "The mouse muscles made enough protective antibodies so that the mice were protected."
The next step is to test the approach in humans, which the program will do over the next two years.
But the hard part is actually not discovering the genetic code for highly potent antibodies, according to Hepburn. In fact, researchers already have been able to do so in two to four weeks' time.
"The hard part is once I have an antibody, a large pharma company will say in 2 years, I can make 100-200 doses. Give us 4 years to get to 20,000 doses. That's not good enough," Hepburn said.
To fight a pandemic, we will need 20,000 doses of a vaccine in 60 days.
"We have to fundamentally change the idea that it takes a billion dollars and ten years to make a drug," he concluded. "We're going to do something radically different."
3) RAPID DIAGNOSING OF PATHOGEN EXPOSURE THROUGH EPIGENETICS
Imagine that you come down with a mysterious illness. It could be caused by a virus, bacteria, or in the most extreme catastrophe, a biological agent from a weapon of mass destruction.
What if a portable device existed that could identify--within 30 minutes—which pathogen you have been exposed to and when? It would be pretty remarkable for soldiers in the field, but also for civilians seeking medical treatment.
This is the lofty ambition of a DARPA program called Epigenetic Characterization and Observation, or ECHO.
Its success depends on a biological phenomenon known as the epigenome. While your DNA is relatively immutable, your environment can modify how your DNA is expressed, leaving marks of exposure that register within seconds to minutes; these marks can persist for decades. It's thanks to the epigenome that identical twins – who share identical DNA – can differ in health, temperament, and appearance.
These three mice are genetically identical. Epigenetic differences, however, result in vastly different observed characteristics.
Reading your epigenetic marks could theoretically reveal a time-stamped history of your body's environmental exposures.
Researchers in the ECHO program plan to create a database of signatures for exposure events, so that their envisioned device will be able to quickly scan someone's epigenome and refer to the database to sort out a diagnosis.
"One difficult part is to put a timestamp on this result, in addition to the sign of which exposure it was -- to tell us when this exposure happened," says Thomas Thomou, a contract scientist who is providing technical assistance to the ECHO program manager.
Other questions that remain up in the air for now: Do all humans have the same epigenetic response to the same exposure events? Is it possible to distinguish viral from bacterial exposures? Does dose and duration of exposure affect the signature of epigenome modification?
The program will kick off in January 2019 and is planned to last four years, as long as certain milestones of development are reached along the way. The desired prototype would be a simple device that any untrained person could operate by taking a swab or a fingerprick.
"In an outbreak," says Dr. Thomou, "it will help everyone on the ground immediately to have a rapidly deployable machine that will give you very quick answers to issues that could have far-reaching ramifications for public health safety."
Kira Peikoff was the editor-in-chief of Leaps.org from 2017 to 2021. As a journalist, her work has appeared in The New York Times, Newsweek, Nautilus, Popular Mechanics, The New York Academy of Sciences, and other outlets. She is also the author of four suspense novels that explore controversial issues arising from scientific innovation: Living Proof, No Time to Die, Die Again Tomorrow, and Mother Knows Best. Peikoff holds a B.A. in Journalism from New York University and an M.S. in Bioethics from Columbia University. She lives in New Jersey with her husband and two young sons. Follow her on Twitter @KiraPeikoff.
Your Online Therapist Will Message You Now
For years, Jenna Sauber took advantage of traditional therapy, setting an appointment with a mental health professional to help her through various life and relationship issues.
"The traditional model of therapy suffers from access barriers that keep enormous numbers of people from getting the care they need."
But when Sauber, 33, needed help extricating herself from a friendship that was becoming toxic, she tried another route of therapy. Life was getting busy for the communications professional from Washington D.C., and Sauber decided it was time to try something new – signing up for an online therapy smartphone app.
She isn't the only one trying therapy on-the-go. The online mental health industry has been booming in recent years, and technology companies – even giants such as Apple and Google – are sensing an opportunity to serve a market that wants to tend to their mental health wherever they are. Some are even tapping virtual reality used with a smartphone to help fight alcohol and nicotine addiction.
For those seeking a sympathetic ear – or text – companies such as Woebot offer a mental health chatbot to help patients relieve their anxiety or depression. Other companies, like Better Help and Talkspace, provide licensed mental health professionals who are available to connect with a patient throughout the day.
Recently, Olympic swimmer Michael Phelps became a brand ambassador for Talkspace after he disclosed his own struggle with depression.
Since Talkspace launched in 2012 by two psychologists, the company says it has worked with more than one million people seeking help.
How It Works
Potential clients fill out a questionnaire, detailing their mental health needs, and are connected with a professional whose specialties align with those needs. Basic text messaging packages are often offered by online therapy companies, as well as live-conversation packages and couples therapy. The average cost of these packages can vary and is usually billed weekly, with the ability to discontinue at any time.
Dr. Neil Lieberman, the Chief Medical Officer of Talkspace, is a board-certified psychiatrist. His background includes the oversight of inmates with severe psychological issues. One of the biggest advantages of online therapy, he says, is its accessibility. More than 70 percent of Talkspace users have never before been in therapy.
"It's a promising, but largely untested way to receive care."
"The traditional model of therapy – brick-and-mortar, 45-minute sessions – suffers from access barriers that keep enormous numbers of people from getting the care they need," Dr. Lieberman says. "Talkspace makes it possible for people to enjoy all the benefits of traditional therapy for a fraction of the cost, and without the need to schedule an appointment, travel to an office or get time off work."
Is It Effective?
This industry, while fast-growing, is still young. Psychiatric professionals are still trying to gauge its success, and whether it's providing the support its clients seek.
Dr. Vaile Wright, a licensed psychologist and the director of research and special projects with the American Psychological Association, says there isn't a lot of research available regarding online therapy.
"It's a promising, but largely untested way to receive care," says Wright.
She describes a spectrum of online therapy-type products available to consumers, ranging from meditation apps to videoconferencing services with a live therapist.
"There may be someone who doesn't necessarily need a mental health diagnosis but could use the mindfulness app to really feel more centered. What we generally see and what we think is probably effective is the use of these apps in conjunction or as an adjunct to a face-to-face ongoing relationship."
The APA offers a set of guidelines for professionals and for consumers that highlight issues that potential patients should consider before choosing online therapy, along with research material and other sources for help, depending on the condition.
There are still a lot of unknowns about online therapy, including potential security, confidentiality, privacy laws, and emergency situations, Wright says. "Consumers do need to be aware of that."
Lieberman says that the Talkspace app and website is encrypted to protect information. The company has also been certified as HIPAA compliant, meaning that the company must have a system in place to protect patient information.
"We take privacy, security, and confidentiality very seriously," he says.
For Sauber and her problematic friendship, online therapy was ultimately a let-down.
"She was very nice," Sauber says of her app therapist. "She would check in twice a day, once during the day and then at night. I'd type out what was going on and she would chime in that night or the next morning. It wasn't truly real-time unless you happened to be online with her window. I found that I was typing in huge paragraphs of what was happening and then me waiting for her to respond." Eventually, Sauber left the friendship on her own and quit the app.
When she decided to get help for sleeping issues last fall, she found her way back to a traditional therapist. And although her schedule was still tight, she was able to schedule FaceTime sessions with the therapist, which helped. The sleep issues, she felt, required a relationship with a live therapist who could notice how her body was responding to stressors.
Wright says that the live aspect of traditional therapy can be instructive in guiding a patient's care.
"Being face-to-face allows a therapist to pick up on body language. Maybe a person looks away when they're talking about a particular topic, or somebody's affect doesn't match up with the content of what they're talking about. For example, they're talking about something that's traumatic and yet they're smiling. That kind of nuance can be lost in texts or even e-mails."
Still, Sauber said she could see the benefits of the apps for different types of personalities and situations.
"I can see it being helpful for people who may not be comfortable being in person with someone because they're shy or just uncomfortable about their body language or may be just better communicating behind a screen," she said.
As far as the future of this kind of therapy, Lieberman says that Talkspace is hard at work expanding its network of clinicians and investing in research and science. The company is also working to develop partnerships with employers and health plans to offer the service to more people.
"Our intention to is to make therapy – a profession we think can lead to meaningful change in anybody's life – as common as going to the dentist or hitting the gym."
"These technology-based approaches can supplement the face-to-face work that you do."
[Correction: An earlier version of this article mistakenly implied that the company Woebot offers licensed mental health professionals to speak with patients. Woebot offers a chatbot service, a fully automated conversational agent, to help patients with anxiety and depression.]