Toshiyuki Ando
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View article: Free space optical communication based on a multi-wavelength optical phased array using Fresnel reflection
Free space optical communication based on a multi-wavelength optical phased array using Fresnel reflection Open
We report a coherent laser transmitter for free space optical communications based on multiwavelength coherent beam combining. We performed 5.6 Gbps free-space optical communications using a two-element optical phased array with three wave…
View article: Lighting-Based Assembly Guidance for Reconfigurable Controller
Lighting-Based Assembly Guidance for Reconfigurable Controller Open
View article: Technological Trends of Satellite Communication Equipments
Technological Trends of Satellite Communication Equipments Open
View article: Analyzing drilling noise in rotational atherectomy: Improving safety and effectiveness through visualization and anomaly detection using autoencoder—A preclinical study
Analyzing drilling noise in rotational atherectomy: Improving safety and effectiveness through visualization and anomaly detection using autoencoder—A preclinical study Open
Background and Aims As the population of aging societies continues to grow, the prevalence of complex coronary artery diseases, including calcification, is expected to increase. Rotational atherectomy (RA) is an essential technique for tre…
View article: Long-term complete response in small cell bladder carcinoma treated with carboplatin, etoposide, and atezolizumab
Long-term complete response in small cell bladder carcinoma treated with carboplatin, etoposide, and atezolizumab Open
Background Small cell bladder carcinoma (SCBC) is a rare and aggressive malignant tumor with no established treatment guidelines. Its treatment algorithm has been based on the small cell lung cancer (SCLC) guidelines. Metastatic SCBC has p…
View article: Intelligent and compact coherent Doppler lidar with fiber-based configuration for robust wind sensing in various atmospheric and environmental conditions
Intelligent and compact coherent Doppler lidar with fiber-based configuration for robust wind sensing in various atmospheric and environmental conditions Open
The intelligent and compact coherent Doppler lidar (CDL) for wind sensing is demonstrated. The configuration is fiber-based. Several functions for the robust wind sensing in various atmospheric and environmental conditions are shown. The m…
View article: Imaging Polarimetry of Geostationary Satellite Express-AM5
Imaging Polarimetry of Geostationary Satellite Express-AM5 Open
This paper reports on the optical imaging polarimetry of geostationary satellite Express-AM5. Precise optical polarimetry was carried out using the Nayuta 2-m telescope at Nishi-Harima Astronomical Observatory and a polarimeter. V-band ima…
View article: Hand-assisted laparoscopic ileal ureter substitution for ureteral obstruction after right ureteral rupture: A case report
Hand-assisted laparoscopic ileal ureter substitution for ureteral obstruction after right ureteral rupture: A case report Open
Iatrogenic ureteral rupture is a serious complication. In the past, ileal ureter substitution was performed with open, laparoscopic, and robot-assisted procedure; however, there are problems with operation invasiveness and difficulty. We p…
View article: Evaluation of Radiation Resistance of Onboard Components for Future Coherent Optical Satellite Communications
Evaluation of Radiation Resistance of Onboard Components for Future Coherent Optical Satellite Communications Open
Optical coherent technology has been attractive for realizing optical satellite communication, optical beam-former and photonic payload in the future. The radiation resistant test of onboard components was also evaluated as the change of t…
View article: Latest Technology for Coherent Doppler LIDAR
Latest Technology for Coherent Doppler LIDAR Open
Coherent Doppler LIDAR, which is a laser remote sensor, measure the atmospheric wind velocity and the wind direction using the phase shift of the aerosols backscattered light from the transmitted light. It can also measure the wind under t…
View article: 155-μm high-peak, high-average-power laser amplifier using an Er,Yb:glass planar waveguide for wind sensing coherent Doppler lidar
155-μm high-peak, high-average-power laser amplifier using an Er,Yb:glass planar waveguide for wind sensing coherent Doppler lidar Open
We have developed a high-gain, high-peak-power laser amplifier at an eye-safe 1.55 μm wavelength using an Er,Yb:glass planar waveguide for wind sensing coherent Doppler lidars (CDLs). Our planar waveguide is free from stimulated Brillouin …
View article: BaroTouch: A Technique for Touch Force Sensing Using a Waterproof Device's Built-in Barometer
BaroTouch: A Technique for Touch Force Sensing Using a Waterproof Device's Built-in Barometer Open
We present BaroTouch, a technique that leverages a waterproof mobile device's built-in barometer to measure the touch force. When an airtight waterproof device is touched, the distorted surface changes the air pressure inside that device a…
View article: Highly Stable Optical Free-Space Transmission Technology Under Atmospheric Fluctuation
Highly Stable Optical Free-Space Transmission Technology Under Atmospheric Fluctuation Open
We present preliminary study on optical phased array technology aiming free-space optical communication for optical feeder link of High Throughput Satellite in the future. The propagation of non-Gaussian beams produced with optical phased …
View article: Influence of dutasteride treatment on serum hormone levels and aging male symptoms in patients with benign prostatic enlargement
Influence of dutasteride treatment on serum hormone levels and aging male symptoms in patients with benign prostatic enlargement Open
Objectives To clarify the effects of dutasteride on serum hormone levels and aging male symptoms in patients with benign prostatic enlargement. Methods The present prospective study was carried out in 110 symptomatic benign prostatic enlar…
View article: Segmental maxillomandibular rotational advancement in obstructive sleep apnoea: a long-term follow-up
Segmental maxillomandibular rotational advancement in obstructive sleep apnoea: a long-term follow-up Open
View article: Computed tomography evaluation with iohexol oral rinse in obstructive sleep apnoea
Computed tomography evaluation with iohexol oral rinse in obstructive sleep apnoea Open
View article: Instantaneous Frequency Control within a Single Pulse Period Using Pulsed Serrodyne Modulation
Instantaneous Frequency Control within a Single Pulse Period Using Pulsed Serrodyne Modulation Open
We developed a new pulsed-coherent light source for wind sensing by combining a semiconductor optical amplifier (SOA) with a phase modulator that was operated to produce pulsed serrodyne modulation. Even though an SOA-based light source ha…
View article: Coherent Beam Combining of Multiple Beams by a Single Detector
Coherent Beam Combining of Multiple Beams by a Single Detector Open
Coherent beam combining (CBC) is the most ideal approach to obtain power and brightness scaling by maintaining the spectral and spatial properties of a single laser. CBCs are needed to maintain the optical phase differences to minimize ind…
View article: Optical Coherent Receiver Front End for Inter-Satellite Laser Communication Link
Optical Coherent Receiver Front End for Inter-Satellite Laser Communication Link Open
This paper presents the new concept of optical coherent receiver front end which can obtain optical phase error signals in PSK (Phase Shift Keying) communication data as well as spatial tracking error without any extra tracking sensor, lea…
View article: Associated factors for the development of acute coronary syndrome or stable coronary artery disease
Associated factors for the development of acute coronary syndrome or stable coronary artery disease Open
【目的】急性冠症候群 (ACS) または安定冠動脈疾患 (SCAD) 患者の背景ならびに経皮的冠動脈インターベンション (PCI) 対象責任病変の特徴を比較することで，ACSならびにSCAD発症病態の差異に関連する因子を探索すること.【方法】血管内超音波 (IVUS) ガイド下でPCIを行った連続 513名 (ACS 392名，SCAD 121名) を対象とし，背景因子，冠危険因子，内服薬，冠動脈造影所見について調査し，冠動脈責任病変のプラーク面積，冠動脈プラーク組成をVi…
View article: Prognostic factors on arrival at the emergency department in patients resuscitated from out-of-hospital cardiac arrest due to coronary artery disease
Prognostic factors on arrival at the emergency department in patients resuscitated from out-of-hospital cardiac arrest due to coronary artery disease Open
【目的】冠動脈疾患に起因する院外心肺停止蘇生後患者の院内死亡および神経予後の救急初療室での予測因子を明らかにすること．【方法】冠動脈疾患を有する院外心肺停止蘇生後患者 79 名を対象とした．生存群と院内死亡群および神経予後良好群と不良群とに分け，背景因子，プレホスピタル因子，心電図を含む来院時所見およびその後の臨床経過を比較し，院内死亡および神経予後を救急初療室で迅速に予測する因子を求めた．【結果】院内死亡群は生存群より，収縮期血圧が低値 ( 81.0±59.3 vs. 1…