A deep learning-based fully automatic and clinical-ready framework for regional myocardial segmentation and myocardial ischemia evaluation.
Mujun AnJunhuan LiXiaoyang XuU Joseph SchoepfRock H SavageKunlin CaoQi SongZeying WangZhi LiuYuwei LiPengfei ZhangPublished in: Medical & biological engineering & computing (2023)
Myocardial ischemia diagnosis with CT perfusion imaging (CTP) is important in coronary artery disease management. Traditional analysis procedure is time-consuming and error-prone due to the semi-manual and operator-dependent nature. To improve the diagnostic performance, a deep learning-based, fully automatic, and clinical-ready framework was developed. Two collaborating deep learning networks including a 3D U-Net for left ventricle segmentation and a CNN for anatomical landmarks detection were trained on 276 subjects. With our processing framework, the 17-segment left ventricular model was automatically generated conformed to the clinical standard. Myocardial blood flow computed by commercial software was extracted within each segment and visualized against the bull's eye plot. The performance was validated on another 45 subjects. Coronary angiography and invasive fractional flow reserve measurements were also performed in these patients to serve as the gold standard for myocardial ischemia diagnosis. As a result, the diagnostic accuracy for our method was 81.08%, much higher than that for commercially available CTP analysis software (56.75%), and our method demonstrated a higher consistency (Kappa coefficient 0.759 vs. 0.585). Besides, the average processing time of our method was much lower (30 ± 10.5 s/subject vs. over 30 min/subject). In conclusion, the proposed deep learning-based framework could be a promising tool for assisting CTP analysis.
Keyphrases
- deep learning
- left ventricular
- convolutional neural network
- artificial intelligence
- blood flow
- machine learning
- coronary artery disease
- end stage renal disease
- heart failure
- computed tomography
- newly diagnosed
- chronic kidney disease
- acute myocardial infarction
- high resolution
- ejection fraction
- cardiovascular disease
- cardiac resynchronization therapy
- prognostic factors
- immune response
- minimally invasive
- magnetic resonance
- peritoneal dialysis
- type diabetes
- cardiovascular events
- data analysis
- left atrial
- body composition
- resistance training