A5065377941- Welding Techniques and Residual Stresses
- Lung Cancer Diagnosis and Treatment
- Advancements in Materials Engineering
- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Advanced Welding Techniques Analysis
- Advanced MRI Techniques and Applications
- Muon and positron interactions and applications
- Metal and Thin Film Mechanics
- Vacuum and Plasma Arcs
- Radiomics and Machine Learning in Medical Imaging
- Medical Imaging Techniques and Applications
- Lung Cancer Treatments and Mutations
- Advanced Chemical Physics Studies
- Electrical Contact Performance and Analysis
- Advanced Condensed Matter Physics
- X-ray Diffraction in Crystallography
- Graphene research and applications
- Pleural and Pulmonary Diseases
- Electromagnetic Launch and Propulsion Technology
- Quantum many-body systems
- Additive Manufacturing Materials and Processes
- Urinary Bladder and Prostate Research
- Crystallography and Radiation Phenomena
- Glioma Diagnosis and Treatment
National Cancer Center Hospital East
2022-2025
Okayama University
2013-2023
Tohoku University
2022
University of Tsukuba
2017-2019
Asahikawa Medical University
2007-2018
University of Iowa
2018
Tokyo Gakugei University
2004-2017
Tonan Hospital
2014
Shizuoka University
2012-2013
Shanghai Shipbuilding Technology Research Institute
2012
The potential advantage of magnetic resonance imaging (MRI) has been limited by artifacts due to the presence metallic materials. For quantitative evaluation magnitude from dental casting alloys and implant materials in MR imaging, 11 or were imaged means 1.5 T MRI apparatus with three different sequences. Mean standard deviation water signal intensity (SI) around sample region interest (1200 mm 2 ) determined, coefficient variation was compared for homogeneity SI. A variety magnitudes...
The 2021 World Health Organization (WHO) classification system for thoracic tumors (including lung cancer) contains several updates to the 2015 edition. Revisions cancer include a new grading invasive nonmucinous adenocarcinoma that better reflects prognosis, reorganization of squamous cell carcinomas and neuroendocrine neoplasms, description some entities. Moreover, remarkable advancements in our knowledge genetic mutations targeted therapies have led much greater emphasis on testing than...
This is a preliminary analysis of one the secondary endpoints in prospective study cohort. The aim this to assess image quality and diagnostic confidence for lung cancer CT images generated by using cadmium-zinc-telluride (CZT)-based photon-counting-detector-CT (PCD-CT) comparing these super-high-resolution (SHR) with conventional normal-resolution (NR) images. Twenty-five patients (median age 75 years, interquartile range 66-78 18 men 7 women) 29 nodules overall (including two 4 2 nodules,...
Although radiation induced damage to the salivary gland is a known complication of radioactive iodine ((131)I) therapy for thyroid carcinoma, prediction severity and reversibility sialoadenitis difficult. Our aim was correlate extent dysfunction assessed by scintigraphy with changes in volume attenuation glands on nonenhanced CT postoperative patients cancer treated RIT.Forty 13 men (age range, 21-80 years) 27 women 28-75 who underwent total thyroidectomy were RIT retrospectively. On CT,...
Heartworm disease is described in a 14‐month‐old neutered female ferret ( Mustela putorius furo ) which had three week history of sneezing, anorexia and dyspnoea. Echocardiography revealed the presence heartworms as hyperechoic densities within right atrial ventricular cavities. At necropsy, four Dirofilaria immltls parasites (three females, one male) were found heart, cranial vena cava caudal cava. Histopathological findings similar to those reported canine heartworm disease. may be useful...
TIG and MIG welding are most popular gas shielded arc processes used on many industrial fields. is high efficiency process compared to welding, however it needed improve the quality about spatter weld metal toughness for advanced GMA process. Although pure Ar shielding desirable toughness, unstable in condition due irregularly behavior of cathode spot plate surface suitable execution difficult. We found that becomes stable even though by simple hybridization MIG. Therefore, this has...
The purpose of this study was to assess the ability ratios peripheral-to-central airway lumen area (hereafter referred as LA) and percentage wall %WA) predict severity chronic obstructive pulmonary disease (COPD) according Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines.We examined 32 patients (27 men five women; mean age ± SD, 70.0 6.8 years; seven GOLD stage 0 [at risk COPD], 19 1-2 [mild moderate airflow limitation], six 3-4 [severe very severe limitation]) using...
Hybrid welding process is effective technique to solve the problem of execution by combining merit various heat sources. However, hybrid complicated interaction sources and selection suitable condition difficult. The numerical analysis enables investigate an influence each parameter on arc phenomena theoretically. In this study, we simulated hybridization such as TIG current torch angles TIG-MIG phenomena. main results are follows: (1) Repulsion between MIG depends distance tip both...
On TIG-MIG hybrid welding process, the MIG arc can keep stability even in pure inert shielding gas by effect of hybridization with TIG and it becomes possible to achieve both merits high quality as well efficiency MIG. In this report, we considered about optimum torch configuration on process for practical application. As a result, following findings were obtained: (1) More than +45° angle is needed forehead under condition that quite large repulsion occurs. (2) Although there not seen...
<h3>BACKGROUND AND PURPOSE:</h3> Diffusion-weighted imaging may aid in distinguishing aggressive chordoma from nonaggressive chordoma. This study explores the prognostic role of apparent diffusion coefficient chordomas. <h3>MATERIALS METHODS:</h3> Sixteen patients with residual or recurrent were divided postoperatively into those an tumor, defined as a growing tumor having doubling time <1 year, and on follow-up MR images. The ability ADC to predict phenotype was investigated by receiver...
On TIG-MIG hybrid welding process, MIG arc is stable even though pure Ar shielded condition. Therefore, this process has a possibility as new type of with high quality and efficiency. However, the mechanism not clear due to complex interaction between TIG arc. In study, we simulated phenomena in by using three-dimensional numerical model. Consequently, it was found that direct path electrical current into electrode from provided plasma distributed electrodes. Furthermore, predicted...
The electrical conductivity a of polycrystalline tellurium dioxide (paratellurite; purity: 6-nine) was measured as function the oxygen partial pressure (1–760 mmHg) at temperatures between 475 and 550°C. relations experimental values logσ 1⁄T were well represented by straight lines, giving apparent activation energy about 1.36 eV. oxygen-pressure dependence isothermal expressed σ∝Po21⁄6 relation; this may be interpreted assuming that electron holes with fullyionized interstitials...
Accurate and high reciprocal resolution experimental structure factors of aluminum were determined from a synchrotron powder X-ray diffraction data measured at 30 K with sin θ/λ < 2.31 Å-1. The have small deviations independent atom model in 0.83 Theoretical prepared using density functional theoretical calculations by full potential linearized augmented plane wave method. deviation between was also observed around ≈ 0.4 charge an extended Hansen-Coppens multipole modeling factors. Charge...
We propose that there might be emergent quasiparticles with fractional electronic charge such dyons on the domain wall between topological insulators and spin ice compounds through Witten effect interaction Dirac fermions excited magnetic monopoles.
To assess the viability of oxygen-enhanced ventilation images using ultra-short echo time magnetic resonance imaging (UTE-MRI).We evaluated oxygen enhancement pulmonary T2*, and signals in each TE (0.2, 0.8, 1.4, 2.0 ms) 21 nonsmokers.The was most significant (32%) at 0.2 ms TE, second T2* (-18%).Pulmonary UTE-MRI are useful for imaging.
Selective laser melting(SLM), one of powder bed fusion(PBF)-type additive manufacturing(AM)processes, is a promising technology that enables high accuracy production arbitrary structures; therefore, it had been utilized in aerospace and medical fields. However, there are many un-elucidated phenomena which will largely affect the quality products. Spatter generation, particular, has reported to adversely stability fabrication, resulting impaired performance The suppression spatter generation...
Magnetic resonance imaging (MRI) is superior to computed tomography (CT) in determining changes tissue structure, such as those observed following inflammation and infection. However, when metal implants or other objects are present, MRI exhibits more distortion artifacts compared with CT, which hinders the accurate measurement of implants. A limited number reports have examined whether novel sequence, multiacquisition variable-resonance image combination selective (MAVRIC SL), can...