Akio Yamazaki
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View article: The Petrosquamosal Sinus: A Venous Anomaly of Surgical Importance in Mastoidectomy
The Petrosquamosal Sinus: A Venous Anomaly of Surgical Importance in Mastoidectomy Open
View article: Postnatal Morphometric Development and Variability of the Posterior Canaliculus: An Analysis in a Japanese Population Using Photon-Counting Detector Computed Tomography
Postnatal Morphometric Development and Variability of the Posterior Canaliculus: An Analysis in a Japanese Population Using Photon-Counting Detector Computed Tomography Open
Objective The posterior canaliculus (PC) is a critical landmark in otologic surgery, but a quantitative in vivo characterization of its postnatal development is lacking. This study aimed to utilize the ultra-high spatial resolution of phot…
View article: Radiological Prevalence of Superior Semicircular Canal Dehiscence with Ultra-High-Resolution Photon-Counting Detector CT: A Close Correlation with Anatomic Findings
Radiological Prevalence of Superior Semicircular Canal Dehiscence with Ultra-High-Resolution Photon-Counting Detector CT: A Close Correlation with Anatomic Findings Open
Purpose To determine the radiological prevalence of superior semicircular canal (SSC) dehiscence in a Japanese cohort using ultra-high-resolution (0.2 mm slice thickness) photon-counting detector CT (PCD-CT) and compare it with historical …
View article: Three Biologic-Naïve Patients with Allergic Bronchopulmonary Aspergillosis Showing Significant Clinical Improvement with Tezepelumab
Three Biologic-Naïve Patients with Allergic Bronchopulmonary Aspergillosis Showing Significant Clinical Improvement with Tezepelumab Open
Allergic bronchopulmonary aspergillosis is characterized by hypersensitivity to Aspergillus spp. and often causes intractable asthma. Studies have been conducted on biologics administered to patients with allergic bronchopulmonary a…
View article: Adolescent and Current Exercise Habits in Chronic Obstructive Pulmonary Disease: Associations with Body Composition, Physical Activity, and Pulmonary Function
Adolescent and Current Exercise Habits in Chronic Obstructive Pulmonary Disease: Associations with Body Composition, Physical Activity, and Pulmonary Function Open
Exercise during adolescence may promote increased lung volume. However, even after the onset of COPD, especially if the disease has progressed, regular exercise routines can help maintain PA, better body composition, and pulmonary function.
View article: Effects of Irradiation During Computed Tomography Scanning on the Function of Implantable Cardioverter-defibrillators
Effects of Irradiation During Computed Tomography Scanning on the Function of Implantable Cardioverter-defibrillators Open
The effect of irradiation during computed tomography (CT) imaging on implantable cardioverter-defibrillators (ICDs) has not been fully evaluated in various settings. The purposes of this study were to evaluate the occurrence of electromagn…
View article: Ultra-High Spatial Resolution Images of the Temporal Bone Obtained With a Newly Released Photon-Counting Detector Computed Tomography
Ultra-High Spatial Resolution Images of the Temporal Bone Obtained With a Newly Released Photon-Counting Detector Computed Tomography Open
View article: Identification rate of <i>Legionella</i> species in non-purulent sputum culture is comparable to that in purulent sputum culture in <i>Legionella</i> pneumonia
Identification rate of <i>Legionella</i> species in non-purulent sputum culture is comparable to that in purulent sputum culture in <i>Legionella</i> pneumonia Open
Many Legionella pneumonia patients do not produce sputum, and it is unknown whether purulent sputum is required for the identification of Legionella species. This study aimed to evaluate the identification rate of Legionella species based …
View article: The GTP binding protein-dependent activation and deactivation of cGMP phosphodiesterase in rod photoreceptors
The GTP binding protein-dependent activation and deactivation of cGMP phosphodiesterase in rod photoreceptors Open
Cyclic GMP (cGMP) has a crucial role in visual transduction. Recent electrophysiological studies clearly indicate the existence of cGMP-activated conductance in photoreceptor plasma membranes. In darkness, Na{sup +}, Ca{sup ++}, and Mg{sup…
View article: Association of gut microbiome with COPD in Japanese male residents: the SESSA study
Association of gut microbiome with COPD in Japanese male residents: the SESSA study Open
Background Altered gut microbiota may contribute to COPD development or progression. Herein, we investigated the association of gut microorganisms with COPD, taking into account the impact of smoking status. Methods This cross-sectional ob…
View article: Inspiratory and Expiratory Computed Tomography Imaging Clusters Reflect Functional Characteristics in Chronic Obstructive Pulmonary Disease
Inspiratory and Expiratory Computed Tomography Imaging Clusters Reflect Functional Characteristics in Chronic Obstructive Pulmonary Disease Open
Clusters using DPM parameters may reflect the characteristics of COPD and help understand the pathophysiology of the disease.
View article: Application of Deep Learning-Based Denoising Technique for Radiation Dose Reduction in Dynamic Abdominal CT: Comparison with Standard-Dose CT Using Hybrid Iterative Reconstruction Method
Application of Deep Learning-Based Denoising Technique for Radiation Dose Reduction in Dynamic Abdominal CT: Comparison with Standard-Dose CT Using Hybrid Iterative Reconstruction Method Open
View article: Autobullectomy with COVID-19 in a patient with chronic obstructive pulmonary disease
Autobullectomy with COVID-19 in a patient with chronic obstructive pulmonary disease Open
View article: WITHDRAWN: Autobullectomy with COVID-19 in a patient with chronic obstructive pulmonary disease
WITHDRAWN: Autobullectomy with COVID-19 in a patient with chronic obstructive pulmonary disease Open
A 72-year-old man with chronic obstructive pulmonary disease (COPD) was admitted for coronavirus disease 2019 (COVID-19). He was discharged on day 30; however, he was readmitted 8 days later because of organizing pneumonia in his left lung…
View article: P5‐122: A case of secondary organizing pneumonia caused by relapse of inflammation after COVID‐19 treatment with systemic corticosteroid and tocilizumab
P5‐122: A case of secondary organizing pneumonia caused by relapse of inflammation after COVID‐19 treatment with systemic corticosteroid and tocilizumab Open
Intervention: Inhaled dry-powder beclomethasone 1200 mcg per day compared with placebo Primary Outcome: The primary endpoint is progression of disease severity defined by Á oxygen saturation drop < 94% and Á any one of the following 3 trea…
View article: Awareness Before and During Pandemic toward Food Waste: “Comparison between Indonesia and Japanese Students”
Awareness Before and During Pandemic toward Food Waste: “Comparison between Indonesia and Japanese Students” Open
In recent years, food waste has become a global issue that often becomes the subject of public debate and has already been put into the SDGs programs which are targeted to be realized in 2030. A large amount of food waste is produced in th…
View article: Time Trend of the Sensitivity of the Pneumococcal Urinary Antigen Test for Diagnosing Pneumococcal Community-Acquired Pneumonia: An Analysis of 15-Year, Prospective Cohort Data
Time Trend of the Sensitivity of the Pneumococcal Urinary Antigen Test for Diagnosing Pneumococcal Community-Acquired Pneumonia: An Analysis of 15-Year, Prospective Cohort Data Open
UMIN000004353.
View article: Predictors and usefulness of targeted therapy for pneumococcal community-acquired pneumonia diagnosed by the urinary antigen test: a prospective, observational cohort study
Predictors and usefulness of targeted therapy for pneumococcal community-acquired pneumonia diagnosed by the urinary antigen test: a prospective, observational cohort study Open
The aim of the present study was to investigate the predictors of targeted therapy (TT) for pneumococcal community-acquired pneumonia (PCAP) with a positive urinary antigen test (UAT) and compare the outcomes with those of nontargeted ther…
View article: Lobe Specific Disease Probability Measure and Pulmonary Function in COPD
Lobe Specific Disease Probability Measure and Pulmonary Function in COPD Open
Background: Disease Probability Measure (DPM) is a useful imaging assessment of gas-trapping and emphysema for chronic obstructive pulmonary disease (COPD).We hypothesized that the association between DPM data per lobe and pulmonary functi…
View article: Single-phase Pulmonary Arteriovenous Separation CT Protocol with Estimated Time of Arrival Method Using 3rd Generation Dual Source CT: Its Success Rate of Pulmonary Arteriovenous Separation in Our Experience of 223 Cases
Single-phase Pulmonary Arteriovenous Separation CT Protocol with Estimated Time of Arrival Method Using 3rd Generation Dual Source CT: Its Success Rate of Pulmonary Arteriovenous Separation in Our Experience of 223 Cases Open
We retrospectively investigated the success rate of pulmonary arteriovenous separation in a single-phase computed tomography (CT) protocol using the estimated time of arrival (ETA) method. A total of 223 patients who underwent a single-pha…
View article: Hygiene control of game meat. How to produce and how to eat
Hygiene control of game meat. How to produce and how to eat Open
昨今，ジビエ産業が賑わいを見せているが，社会一般的には突如巷に現れた野生動物食ブーム，という感が強く，その背景や生産過程についてはあまりよく知られていない．元来食肉は家畜と家禽に由来するもので，相応の法的規制の下に生産されるが，現在の日本の食肉生産方法に野生動物を組み込むことは衛生面から不安が多いため，家畜とは異なる解体施設での食肉生産を義務付けられている．しかし，大自然の中で生育した野生動物が保有する微生物によるヒトへの危害性については未知の部分が多いにもかかわらず，家畜…
View article: Increased Risk of Legionella Pneumonia as Community-acquired Pneumonia after Heavy Rainfall in 2018 in West Japan
Increased Risk of Legionella Pneumonia as Community-acquired Pneumonia after Heavy Rainfall in 2018 in West Japan Open
Background : Japan experienced a heavy rainfall event from June 28 to July 8, 2018, and many casualties were caused by both heavy rainfall and flooding. Few studies have investigated patients’ characteristics and causative pathogens of com…
View article: Usefulness of β-lactam and Macrolide Combination Therapy for Treating Community-acquired Pneumonia Patients Hospitalized in the Intensive Care Unit: Propensity Score Analysis of a Prospective Cohort Study
Usefulness of β-lactam and Macrolide Combination Therapy for Treating Community-acquired Pneumonia Patients Hospitalized in the Intensive Care Unit: Propensity Score Analysis of a Prospective Cohort Study Open
Background: Previous studies reported that β-lactam and macrolide combination therapy significantly improved outcomes for patients with severe community-acquired pneumonia hospitalized in the intensive care unit (ICU) compared with a non-m…
View article: Is antipseudomonal antibiotic treatment needed for all nursing and healthcare-associated pneumonia patients at risk for antimicrobial resistance?
Is antipseudomonal antibiotic treatment needed for all nursing and healthcare-associated pneumonia patients at risk for antimicrobial resistance? Open
View article: An index of the fractal characteristic of an airway tree is associated with airflow limitations and future body mass index reduction in COPD patients
An index of the fractal characteristic of an airway tree is associated with airflow limitations and future body mass index reduction in COPD patients Open
An airway tree is a fractal object. We showed that the distribution of minimal inner cross-sectional area (iCSA) of airway branches can be expressed by a fractal index, D, of minimal iCSA. This D was correlated with airflow limitation and …
View article: Azithromycin combination therapy for community-acquired pneumonia: propensity score analysis
Azithromycin combination therapy for community-acquired pneumonia: propensity score analysis Open
View article: The prognostic performance of qSOFA for community-acquired pneumonia
The prognostic performance of qSOFA for community-acquired pneumonia Open
View article: Preferential membrane binding of phosphodiesterase 6 compared to other photoreceptor proteins
Preferential membrane binding of phosphodiesterase 6 compared to other photoreceptor proteins Open
View article: A model for predicting bacteremia in patients with community-acquired pneumococcal pneumonia: a retrospective observational study
A model for predicting bacteremia in patients with community-acquired pneumococcal pneumonia: a retrospective observational study Open
View article: Development of Animation Projector System and Usefulness in Pediatric Head CT
Development of Animation Projector System and Usefulness in Pediatric Head CT Open
The restlessness of young children often causes motion artifacts on CT images. We devised a new animation projector system (CT Theater) that enables a child to view an animation during a pediatric head CT examination. The purpose of this s…