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Effect of carotid image-based phenotypes on cardiovascular risk calculator: AECRS1.0

  • Narendra N. Khanna
  • Ankush D. Jamthikar
  • Deep Gupta
  • Tadashi Araki
  • Matteo Piga
  • Luca Saba
  • Carlo Carcassi
  • Andrew Nicolaides
  • John R. Laird
  • Harman S. Suri
  • Ajay Gupta
  • Sophie Mavrogeni
  • Athanasios Protogerou
  • Petros Sfikakis
  • George D. Kitas
  • Jasjit S. SuriEmail author
Original Article
  • 21 Downloads

Abstract

Today, the 10-year cardiovascular risk largely relies on conventional cardiovascular risk factors (CCVRFs) and suffers from the effect of atherosclerotic wall changes. In this study, we present a novel risk calculator AtheroEdge Composite Risk Score (AECRS1.0), designed by fusing CCVRF with ultrasound image-based phenotypes. Ten-year risk was computed using the Framingham Risk Score (FRS), United Kingdom Prospective Diabetes Study 56 (UKPDS56), UKPDS60, Reynolds Risk Score (RRS), and pooled composite risk (PCR) score. AECRS1.0 was computed by measuring the 10-year five carotid phenotypes such as IMT (ave., max., min.), IMT variability, and total plaque area (TPA) by fusing eight CCVRFs and then compositing them. AECRS1.0 was then benchmarked against the five conventional cardiovascular risk calculators by computing the receiver operating characteristics (ROC) and area under curve (AUC) values with a 95% CI. Two hundred four IRB-approved Japanese patients’ left/right common carotid arteries (407 ultrasound scans) were collected with a mean age of 69 ± 11 years. The calculators gave the following AUC: FRS, 0.615; UKPDS56, 0.576; UKPDS60, 0.580; RRS, 0.590; PCRS, 0.613; and AECRS1.0, 0.990. When fusing CCVRF, TPA reported the highest AUC of 0.81. The patients were risk-stratified into low, moderate, and high risk using the standardized thresholds. The AECRS1.0 demonstrated the best performance on a Japanese diabetes cohort when compared with five conventional calculators.

Graphical abstract

AECRS1.0: Carotid ultrasound image phenotype-based 10-year cardiovascular risk calculator. The figure provides brief overview of the proposed carotid image phenotype-based 10-year cardiovascular risk calculator called AECRS1.0. AECRS1.0 was also benchmarked against five conventional cardiovascular risk calculators (Framingham Risk Score (FRS), United Kingdom Prospective Diabetes Study 56 (UKPDS56), UKPDS60, Reynolds Risk Score (RRS), and pooled composite risk (PCR) score).

Keywords

Atherosclerosis Stroke Conventional cardiovascular risk Ultrasound Carotid intima-media thickness 10-year risk prediction Composite risk score 

Notes

Compliance with ethical standards

Disclosure

Dr. Jasjit Suri is affiliated to AtheroPoint™, focused on the area of stroke and cardiovascular imaging.

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

11517_2019_1975_MOESM1_ESM.docx (29 kb)
ESM 1 (DOCX 28 kb)

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Copyright information

© International Federation for Medical and Biological Engineering 2019

Authors and Affiliations

  • Narendra N. Khanna
    • 1
  • Ankush D. Jamthikar
    • 2
  • Deep Gupta
    • 2
  • Tadashi Araki
    • 3
  • Matteo Piga
    • 4
  • Luca Saba
    • 5
  • Carlo Carcassi
    • 6
  • Andrew Nicolaides
    • 7
  • John R. Laird
    • 8
  • Harman S. Suri
    • 9
  • Ajay Gupta
    • 10
  • Sophie Mavrogeni
    • 11
  • Athanasios Protogerou
    • 12
  • Petros Sfikakis
    • 13
  • George D. Kitas
    • 14
  • Jasjit S. Suri
    • 15
    Email author
  1. 1.Department of CardiologyIndraprastha Apollo HospitalsNew DelhiIndia
  2. 2.Department of ECEVisvesvaraya National Institute of TechnologyNagpurIndia
  3. 3.Division of Cardiovascular MedicineToho UniversityTokyoJapan
  4. 4.Department of RheumatologyUniversity of CagliariCagliariItaly
  5. 5.Department of RadiologyUniversity of CagliariCagliariItaly
  6. 6.Department of GeneticsUniversity of CagliariCagliariItaly
  7. 7.Vascular Diagnostic CenterUniversity of CyprusNicosiaCyprus
  8. 8.Heart and Vascular InstituteAdventist Health St. HelenaSt. HelenaUSA
  9. 9.Brown UniversityProvidenceUSA
  10. 10.Department of RadiologyCornell Medical CenterNew YorkUSA
  11. 11.Cardiology ClinicOnassis Cardiac Surgery CenterAthensGreece
  12. 12.Department of Cardiovascular Prevention & Research Unit Clinic & Laboratory of PathophysiologyNational and Kapodistrian University of AthensAthensGreece
  13. 13.Rheumatology UnitNational Kapodistrian University of AthensAthensGreece
  14. 14.Research & Development-Academic AffairsDudley Group NHS Foundation TrustDudleyUK
  15. 15.Stroke Monitoring and Diagnostic DivisionAtheroPoint™RosevilleUSA

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