Google AI can predict heart disease risk from eye images

The algorithm could distinguish the retinal images of a smoker from that of a non-smoker 71 per cent of the time.

PTI
Washington, Publish Date: Feb 21 2018 12:44AM | Updated Date: Feb 21 2018 12:44AM
Google AI can predict heart disease risk from eye imagesRepresentational Pic

Researchers at Google have developed a new artificial intelligence system that can accurately predict the risk of heart diseases by scanning images of people's retina.

The discovery may point to more ways to diagnose health issues from retinal images, researchers said.

"Using deep learning algorithms trained on data from 284,335 patients, we were able to predict cardiovascular risk factors from retinal images with surprisingly high accuracy for patients from two independent datasets of 12,026 and 999 patients," Lily Peng from the Google Brain Team wrote in a blog post.

The algorithm could distinguish the retinal images of a smoker from that of a non-smoker 71 per cent of the time.

While doctors can typically distinguish between the retinal images of patients with severe high blood pressure and normal patients, the algorithm could go further to predict the systolic blood pressure within 11 milimetre Hg on average for patients overall, including those with and without high blood pressure.

The algorithm was fairly accurate at predicting the risk of a cardiovascular event directly, said Peng.

"Our algorithm used the entire image to quantify the association between the image and the risk of heart attack or stroke," she said.

Given the retinal image of one patient who later experienced a major cardiovascular event (such as a heart attack) and the image of another patient who did not, the algorithm could pick out the heart patient 70 per cent of the time.

This performance approaches the accuracy of other cardiovascular risk calculators that require a blood draw to measure cholesterol.

"We opened the 'black box' by using attention techniques to look at how the algorithm was making its prediction. These techniques allow us to generate a heatmap that shows which pixels were the most important for a predicting a specific cardiovascular risk factor," said Peng.

For example, the algorithm paid more attention to blood vessels for making predictions about blood pressure, as shown in the image above. Explaining how the algorithm is making its prediction gives doctor more confidence in the algorithm itself.

Traditionally, medical discoveries are often made through a sophisticated form of guess and test - making hypotheses from observations and then designing and running experiments to test the hypotheses.

However, with medical images, observing and quantifying associations can be difficult because of the wide variety of features, patterns, colours, values and shapes that are present in real images.

"Our approach uses deep learning to draw connections between changes in the human anatomy and disease, akin to how doctors learn to associate signs and symptoms with the diagnosis of a new disease," Peng said.

This could help scientists generate more targeted hypotheses and drive a wide range of future research. PTI 

Latest News

  1. Floral tribute paid to four policemen killed in Shopian militant attack
  2. Floral tribute paid to four policemen killed in Shopian militant attack
  1. Shaktikanta Das to be new RBI Governor
  2. Shaktikanta Das to be new RBI Governor
  1. 39 per cent voting recorded in final phase of Kashmir panchayat polls
  2. 39 per cent voting recorded in final phase of Kashmir panchayat polls
  1. Sachin Pilot: the pilot who helped drive Cong to victory in Rajasthan
  2. Sachin Pilot: the pilot who helped drive Cong to victory in Rajasthan
  1. Body of missing driver recovered in Rajouri
  2. Body of missing driver recovered in Rajouri
  1. Omar Abdullah condemns killing of cops in south Kashmir’s Shopian
  2. Omar Abdullah condemns killing of cops in south Kashmir’s Shopian
  1. Four cops killed after militants attack police post in south Kashmir’s Shopian
  2. Four cops killed after militants attack police post in south Kashmir’s Shopian
  1. 1984 riots: Delhi HC seeks police response to convict's plea
  2. 1984 riots: Delhi HC seeks police response to convict's plea
  1. Policeman critically injured in Shopian attack succumbs
  2. Policeman critically injured in Shopian attack succumbs
  1. Traffic resumes on Jammu-Srinagar highway
  2. Traffic resumes on Jammu-Srinagar highway
  1. Jaish claims Shopian attack that left four cops dead
  2. Jaish claims Shopian attack that left four cops dead
  1. BJP headquarters in Delhi look deserted, Congress workers celebrate at theirs
  2. BJP headquarters in Delhi look deserted, Congress workers celebrate at theirs
  1. PDP hits back at Karan Singh, says ‘we risked political interests to safeguard secular fabric of JK’
  2. PDP hits back at Karan Singh, says ‘we risked political interests to safeguard secular fabric of JK’
  1. India's role crucial for Afghan peace: Qureshi
  2. India's role crucial for Afghan peace: Qureshi
  1. Congress bags Chhattisgarh, TRS sweeps Telangana, suspense in MP
  2. Congress bags Chhattisgarh, TRS sweeps Telangana, suspense in MP
  1. CRPF bunker removed from Amira Kadal after three decades, locals heave a sigh of relief
  2. CRPF bunker removed from Amira Kadal after three decades, locals heave a sigh of relief
  1. Night temperature dips across Kashmir following rain and snow
  2. Night temperature dips across Kashmir following rain and snow
  1. Law exam question on Muslim man killing cow triggers row, Delhi govt orders inquiry
  2. Law exam question on Muslim man killing cow triggers row, Delhi govt orders inquiry
  1. National interest must prevail over party: Modi
  2. National interest must prevail over party: Modi
  1. Suicide bomber kills four security personnel near Afghan capital
  2. Suicide bomber kills four security personnel near Afghan capital
  1. Panchayat polls phase 9: Less than one per cent polling till 10 am in Pulwama
  2. Panchayat polls phase 9: Less than one per cent polling till 10 am in Pulwama
  1. Polls were fought on state govts' performance: Rajnath
  2. Polls were fought on state govts' performance: Rajnath
  1. Forces lay siege to Sopore village in north Kashmir
  2. Forces lay siege to Sopore village in north Kashmir
  1. Names, identities of victims of rape and sexual assault not to be disclosed: SC
  2. Names, identities of victims of rape and sexual assault not to be disclosed: SC
  1. Urjit Patel's resignation signals dangerous trend: AIBEA
  2. Urjit Patel's resignation signals dangerous trend: AIBEA
  1. Congress set for landslide win in Chhattisgarh
  2. Congress set for landslide win in Chhattisgarh
  1. Hajin shuts on third straight day to mourn militant killings
  2. Hajin shuts on third straight day to mourn militant killings
  1. Three non-local workers die of asphyxiation in south Kashmir's Kulgam
  2. Three non-local workers die of asphyxiation in south Kashmir's Kulgam
  1. Congress leads in three BJP-ruled states, TRS in Telangana
  2. Congress leads in three BJP-ruled states, TRS in Telangana
  1. Kulgam house owner found dead 46 days after his abduction
  2. Kulgam house owner found dead 46 days after his abduction
  1. Polling underway for final phase of panchayat polls in Jammu and Kashmir
  2. Polling underway for final phase of panchayat polls in Jammu and Kashmir
x
This site uses cookies to deliver our services and to show you relevant news and ads. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service.That's Fine