@article{qin2013automatic,
  title={Automatic segmentation of right ventricular ultrasound images using sparse matrix transform and a level set},
  author={Qin, Xulei and Cong, Zhibin and Fei, Baowei},
  journal={Physics in Medicine \& Biology},
  volume={58},
  number={21},
  pages={7609},
  year={2013},
  publisher={IOP Publishing}
}