OBJECTIVES Gestational and chronological age may have an impact on myocardial function. We studied the longitudinal changes of the atrioventricular tissue Doppler velocities in premature infants through the neonatal transitional period and at expected term and explored the reproducibility of the measurements. DESIGN Prospective, observational and longitudinal cohort study. SETTING Two-centr...

OBJECTIVE To give a detailed evaluation on main pulmonary artery blood velocity patterns, in patients with ischemic heart disease and to provide recommendations for pulsed Doppler sample volume placement, in order to optimize cardiac output estimation. METHODS Using magnetic resonance phase and esophageal color Doppler velocity mapping in 12 patients with ischemic heart disease and undergoing...

BACKGROUND Non-invasive evaluation of left ventricular filling pressure has been scarcely studied in critically ill patients. Accordingly, we prospectively assessed the ability of transoesophageal echocardiography (TEE) Doppler to predict an invasive pulmonary artery occlusion pressure (PAOP) < or = 18 mmHg in ventilated patients. METHODS During two consecutive 3-year periods, TEE Doppler par...

D e s c r i p t i o n o f t e s t s a n d d i a g n o s t i c s t a n d a r d Blood for BNP levels was taken using the Triage BNP test (Biosite Diagnostics, San Diego, CA, USA), a point-of-care method based on fluorescence immunoassay. The BNP measurements were done on frozen plasma approximately 1 to 2 months after blood collection. Doppler echocardiography was done within 60 minutes of enroll...

Pulsed Doppler lidar is the infrared equivalent of pulsed Doppler radar. Instead of raindrops, however, lidars reflect off naturally-occurring dust particles (aerosols). The aerosols have negligible fall velocities and so trace the wind field nearly perfectly. Up until the mid-1990’s, Doppler lidars were limited to research implementations and short-duration, human-in-the-loop deployment for a ...

1 Facultatea de Electronică şi Telecomunicaţii, Departamentul Comunicaţii Bd. V. Pârvan Nr. 2, 300223 Timişoara, e-mail [email protected] Abstract – This paper proposes an investigation of wavelet based multi-carrier modulation performance in flat fading radio channels. Transmission BER is computed and analyzed against the classical Orthogonal Frequency Division Multiplexing (OFDM) perfo...