Naoki Ehara

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PURPOSE We have reported that in the thyroid, there is a linear correlation between iodine concentrations and CT values. However, the slope of the regression line was about three times as large as that in KI solutions. We investigated the factor(s) contributing to the increment of the slope of the regression line in the thyroid. METHOD Solutions of NH4I(More)
For evaluation of thyroidal iodine kinetics and thyroid nodules, we carried out quantitative in vivo measurement of thyroid iodine concentration by CT. Neuron activation analysis of iodine content was conducted on 48 thyroid fragments without calcification operatively obtained from 18 patients who had undergone CT of the thyroid without contrast(More)
Maneuvering targets are di cult to track for the Kalman lter since the target model of tracking lter might not t the real target trajectory and the statistical characteristics of the target maneuver are unknown in advance. In order to track such a heavy maneuvering target, the estimation of the target turndirection is necessary. The two-stage estimator(More)
In tracking systems using phased array antenna, the adaptive-gain CX-P tracker combined with circular prediction has been proposed for maneuvering targets. However, tracking quality of the circular prediction filter degrades for highly maneuvering targets that continue to change the turning plane, since the circular prediction is calculated on the(More)
In recent years, measurement of cerebral regional oxygen saturation (rSO2) has attracted attention during resuscitation. However, serial changes of cerebral rSO2 in pre-hospital settings are unclear. The objective of this study was to clarify serial changes in cerebral rSO2 of patients with out-of-hospital cardiac arrest (OHCA) in the pre-hospital setting.(More)
BACKGROUND In recent years, the measurement of cerebral regional oxygen saturation (rSO2) during resuscitation has attracted attention. The objective of this study was to clarify the relationship between the serial changes in the cerebral rSO2 values during extracorporeal cardiopulmonary resuscitation (ECPR) and the neurological outcome. METHODS We(More)
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