Chih-Hsiang Ko

Chih-Hsiang Ko
Taipei Medical University | TMU · Department of Radiology

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8
Publications
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Introduction
Skills and Expertise

Publications

Publications (8)
Article
Full-text available
Background: Radiosensitivity in the breasts increases the risk of carcinogenesis from exposure to the ionizing radiation of computed tomography (CT) administered in the course of medical attention. Bismuth shielding techniques have been used to reduce radiation, but image noise increased, degrading image quality. Purpose: The aim of this study w...
Article
Full-text available
Objectives: Our aim was to retrospectively investigate the frequency and outcome of large-volume iodinated contrast medium (CM) extravasation in our institution and to compare our management protocol to current practice. Methods: Institutional review board approval was obtained, and informed consent was waived because the study was retrospective...
Conference Paper
The capacitive type of radio frequency micro-electromechanical systems (RF MEMS) switch is investigated for low driving voltages and low power consumption. The RF MEMS switch is actuated by electro-thermal forces and electrostatic forces at the same time, and then held the status by electrostatic forces only after driving. We also use complementary...
Article
This paper demonstrates a capacitive shunt type RF MEMS switch, which is actuated by electro-thermal actuator and electrostatic actuator at the same time, and than latching the switching status by electrostatic force only. Since thermal actuators need relative low voltage compare to electrostatic actuators, and electrostatic force needs almost no p...
Conference Paper
This work demonstrates a capacitive RF (radio frequency) MEMS (micro-electromechanical systems) switch, which is actuated by electro-thermal force and electrostatic force at the same time, and than latching the switching status by electrostatic force only. Since thermal actuator need relative low voltage compare to electrostatic actuator, for elect...

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