Bruce, C J Intracardiac Doppler hemodynamics and flow: new vector, phased-array ultrasound-tipped catheter. [electronic resource] - The American journal of cardiology May 1999 - 1509-12, A9 p. digital Publication Type: Journal Article ISSN: 0002-9149 Standard No.: 10.1016/s0002-9149(99)00136-8 doi Subjects--Topical Terms: AdultAgedCardiac Catheterization--instrumentationEchocardiography, Doppler--instrumentationEquipment DesignFeasibility StudiesHumansMiddle Aged