Hiroshi Kanai

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BACKGROUND Although a significant progress has been made in the management of ischemic heart disease (IHD), the number of severe IHD patients is increasing. Thus, it is crucial to develop new, non-invasive therapeutic strategies. In the present study, we aimed to develop low-intensity pulsed ultrasound (LIPUS) therapy for the treatment of IHD. METHODS AND(More)
This paper describes a new method of accurately estimating the parameters of an autoregressive (AR) process contaminated by high-level white noise. Based on the phase matching technique, it minimizes the difference between the phase of the all-zero model and the phase of the maximum phase signal reconstructed from the power spectrum of the observed signal.(More)
Artery-wall motion due to the pulsation of the heart is often measured to evaluate mechanical properties of the arterial wall. Such motion is thought to occur only in the arterial radial direction because the main source of the motion is an increase of blood pressure. However, it has recently been reported that the artery also moves in the longitudinal(More)
BACKGROUND Large clinical trials are lack of data on non-vitamin K antagonist oral anticoagulants for acute stroke patients. AIM To evaluate the choice of oral anticoagulants at acute hospital discharge in stroke patients with nonvalvular atrial fibrillation and clarify the underlying characteristics potentially affecting that choice using the multicenter(More)
We present a new method for estimation of spectrum transition of a nonstationary signals in low signal-to-noise ratio cases. Instead of basic functions which are employed by the previously proposed time-varying AR modeling, we introduce the spectrum transition constraint in the cost function described by the partial correlation coecients so that the method(More)
Oue of (.he key questions to be addressed in t,liis paper is how 1.0 estimate the deterministic input multipulse time series from a noisy respouse of the resonant transfer system iii (.lie case where t.he SNR is low aud the system Q(quality laci.or) of Ihe transfer system is high. By generaliziug the sharp truucabion employed in the standard(More)