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Your search keyword '"Takenori Kozuka"' showing total 3 results
Start Over Author "Takenori Kozuka" Publisher ovid technologies (wolters kluwer health)
3 results on '"Takenori Kozuka"'

1. Pulmonary Involvement in Primary Sjögren's Syndrome

Author

Seiki Hamada, Naoki Mihara, Takeshi Johkoh, Noriyuki Tomiyama, Mitsuhiro Koyama, Hironobu Nakamura, Osamu Honda, and Takenori Kozuka

Subjects
Adult, Lung Diseases, Male, musculoskeletal diseases, Pulmonary and Respiratory Medicine, medicine.medical_specialty, Systemic disease, Pathology, Eye disease, Computed tomography, Immunopathology, medicine, Humans, Radiology, Nuclear Medicine and imaging, Aged, Bronchiectasis, Lung, medicine.diagnostic_test, business.industry, Respiratory disease, Middle Aged, respiratory system, medicine.disease, Sjogren's Syndrome, medicine.anatomical_structure, Female, Radiology, Tomography, X-Ray Computed, Complication, business
Abstract

The purpose of this study was to describe the high-resolution computed tomography (HRCT) findings of pulmonary involvement in primary Sjögren's syndrome. The study included 60 patients who met the diagnostic criteria for primary Sjögren's syndrome. The authors retrospectively reviewed the presence, extent, and distribution of various HRCT findings. Results showed that the most common HRCT findings were areas with ground-glass attenuation (92%), followed by subpleural small nodules (78%), non-septal linear opacity (75%), interlobular septal thickening (55%), bronchiectasis (38%), and cysts (30%).

Published
2001

2. Invasive and Noninvasive Thymoma: Distinctive CT Features

Author

Seiki Hamada, Joanne R. Cleverley, Nestor L. Müller, Takenori Kozuka, Samantha Ellis, Shinichiro Miyoshi, Meinoshin Okumura, Shigeyuki Yoshida, Masahiko Kusumoto, Hironobu Nakamura, Noriyuki Tomiyama, Osamu Honda, Naoki Mihara, and Takeshi Johkoh

Subjects
Adult, Male, Thymoma, chemical and pharmacologic phenomena, Statistics, Nonparametric, Necrosis, Radiologic sign, Calcinosis, Irregular contour, hemic and lymphatic diseases, medicine, Humans, Neoplasm Invasiveness, Radiology, Nuclear Medicine and imaging, Ct findings, neoplasms, Aged, Chi-Square Distribution, Thymus Neoplasm, business.industry, Thymus Neoplasms, Middle Aged, Invasive thymoma, medicine.disease, surgical procedures, operative, Female, Tomography, X-Ray Computed, business, Nuclear medicine, Calcification
Abstract

Purpose: The purpose of this work was to evaluate the CT features of thymoma and to determine the most helpful findings in differentiating invasive from noninvasive thymoma. Method: The CT scans from 27 patients with invasive thymoma and 23 with noninvasive thymoma were independently assessed by two observers without knowledge of their invasiveness. The presence and distribution of various CT findings were independently analyzed. Results: Invasive thymomas were more likely to have lobulated (16/27, 59%) or irregular (6/27, 22%) contours than noninvasive thymomas (8/23, 35% and 1.5/23, 6%, respectively) (p < 0.05). Invasive thymomas had a higher prevalence of low attenuation areas within the tumor (16/27, 60%) than noninvasive thymomas (5/23, 22%) (p < 0.001) as well as foci of calcification (14.5/27, 54% vs. 6/23, 26%; p < 0.01). Conclusion: The presence of lobulated or irregular contour, areas of low attenuation, and multifocal calcification is suggestive of invasive thymoma.

Published
2001

3. Artificial Ventilation–Induced Diffuse Alveolar Damage in Rabbits

Author

Naoki Mihara, Takeshi Johkoh, Takenori Kozuka, Yoko Ichikawa, Kiyokazu Kagawa, Osamu Honda, Tomoyo Nishida, Satoru Yamamoto, Hironobu Nakamura, Hiroaki Naito, Noriyuki Tomiyama, Seiki Hamada, and Masaji Nishimura

Subjects
musculoskeletal diseases, Artificial ventilation, High-resolution computed tomography, medicine.medical_specialty, Time Factors, medicine.medical_treatment, Early detection, Computed tomography, medicine, Animals, Humans, Radiology, Nuclear Medicine and imaging, Ct findings, Diffuse alveolar damage, Lung, Mechanical ventilation, medicine.diagnostic_test, business.industry, Respiration, General Medicine, respiratory system, Respiration, Artificial, respiratory tract diseases, Oxygen, Pulmonary Alveoli, Acute Disease, Rabbits, Radiology, Respiratory Insufficiency, Tomography, X-Ray Computed, business
Abstract

RATIONALE AND OBJECTIVES To investigate whether expiratory high-resolution computed tomography (HRCT) is more useful than inspiratory HRCT for the detection of early-phase diffuse alveolar damage. METHODS Eleven anesthetized rabbits were scanned with both inspiratory and expiratory HRCT every 30 minutes during mechanical ventilation. Ten rabbits were killed after the detection of pulmonary abnormalities on both inspiratory and expiratory HRCT. The remaining rabbit was killed when the pulmonary abnormalities appeared only on expiratory HRCT. RESULTS In four cases (36%), the abnormal findings were detected earlier on expiratory HRCT than on inspiratory HRCT. In seven cases (64%), the abnormalities appeared simultaneously on inspiratory and expiratory HRCT. In all 11 cases, the histopathological changes of areas with abnormal CT findings corresponded to the exudative or proliferative phase of diffuse alveolar damage. CONCLUSIONS Expiratory HRCT has the potential to detect the abnormalities of diffuse alveolar damage earlier than inspiratory HRCT.

Published
2000

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