1. Color Doppler flow mapping: Intra and intermachine variability for low flow velocities in an in vitro model (abstract);Aggarwal;J. Am. Coll. Cardiol.,1988
2. Understanding different types of color Doppler Systems;Aggarwal,1989
3. Appendix: Definitions of commonly used terms in color flow mapping;Aggarwal,1989
4. Computer analysis of Doppler color flow mapping images for quantitative assessment of in vitro fluid jets;Bolger;J. Am. Coll. Cardiol.,1988
5. Power mode versus velocity mode in the assessment of valvular regurgitation (abstract);Helmcke;Circulation,1988