Jim Gaiser

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We compared standard chest physical therapy and postural drainage (CPT/PD) with a new airway clearance therapy called high-frequency chest wall oscillation (HFCWO) in a group of stable cystic fibrosis (CF) patients. In this crossover trial, 29 CF patients (15 males, 14 females), aged 7-47 years that met the inclusion criteria were randomly assigned to(More)
BACKGROUND Radiofrequency (RF) energy has been delivered to the tricuspid valve annulus (TVA) in humans with both 4 mm and 8 mm long catheter tip electrodes to treat atrial flutter. However, lesion volume with temperature controlled RF delivery systems has not been previously characterized. METHODS In 10 anesthetized canines, a single pulse of temperature(More)
Recent advances in parameter estimation and seismic processing have allowed incorporation of anisotropic models into a wide range of seismic methods. In particular, vertical and tilted transverse isotropy are currently treated as an integral part of velocity fields employed in prestack depth migration algorithms, especially those based on the wave equation.(More)
Attenuation and attenuation anisotropy can furnish valuable information about lithol-ogy, fluids, and fractures in rocks. Properties such as permeability, fluid mobility and saturation that are difficult to measure using conventional velocity or amplitude-variation-with-offset (AVO) analysis could possibly be extracted from attenuation measurements. To(More)
The safety and lesion volume of temperature controlled radiofrequency ablation (TCRFA) in the right ventricle (RV), left ventricle (LV), and coronary sinus (CS) comparing long 5 Fr to standard tip electrodes have not been previously reported. In 10 canines, TCRFA was delivered at a 70 degrees C set point for 30 seconds. Lateral and septal RV lesions were(More)
Transcatheter radiofrequency (RF) ablation of atrial fibrillation or flutter requires the creation of linear lesions. However, conventional catheters are not predictably effective because of poor endocardial contact, and limited lesion size and penetration. The purpose of the study was to assess in the right atrium, the efficacy and safety of a new catheter(More)
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