• Journal of Sensor Science and Technology
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• v.11 no.5
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• pp.263-272
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• 2002

In this paper, we investigate the potential for retrieval of morphometric data from three dimensional images of conducting bronchus obtained by X-ray Computerized Tomography (CT) and to explore the potential for the use of rapid prototype machine to produce physical hollow bronchus casts for mathematical modeling and experimental verification of particle deposition models. We segment the bronchus of lung by mathematical morphology method from obtained images by CT. The surface data representing volumetric bronchus data in three dimensions are converted to STL(streolithography) file and three dimensional solid model is created by using input STL file and rapid prototype machine. Two physical hollow cast models are created from the CT images of bronchial tree phantom and living human bronchus. We evaluate the usefulness of the rapid prototype model of bronchial tree by comparing diameters of the cross sectional area bronchus segments of the original CT images and the rapid prototyping-derived models imaged by X-ray CT.

• Korean Journal of Radiology
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• v.1 no.3
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• pp.159-161
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• 2000

The authors present a case of histologically proven bronchus-associated lymphoid tissue (BALT) lymphoma of the lung in a patient with primary Sjögren's syndrome that manifested on thin-section CT scan as a mosaic pattern of inhomogeneous attenuation due to mixed small airway and infiltrative abnormalities

• Journal of Chest Surgery
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• v.51 no.3
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• pp.216-219
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• 2018

We report the case of a 16-year-old male patient who was involved in a traffic accident and transferred to the emergency department with mild chest pain. We initially did not find evidence of tracheal injury on computed tomography (CT). Within an hour after presentation, the patient developed severe dyspnea and newly developed subcutaneous emphysema and pneumoperitoneum were discovered. Abdominal CT showed no intra-abdominal injury. However, destruction of the right main bronchus was identified on coronal images of the initially performed CT scan. Emergency exploratory surgery was performed. The amputated right main bronchus was identified. End-to-end tracheobronchial anastomosis was performed, and the patient recovered without any complications.

• Journal of Chest Surgery
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• v.43 no.5
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• pp.550-552
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• 2010

An accessory cardiac bronchus (ACB) is a rare congenital anomaly of the trachobronchial tree. It rarely presents with symptoms, and is usually diagnosed incidentally by chest CT, bronchoscopy, or during surgery. We experienced a case of accessory cardiac bronchus found incidentally in the bronchus intermedius with lung cancer in the right lower lobe, and surgically removed.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.33 no.3
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• pp.179-182
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• 2022

Foreign body (FB) aspiration remains a serious health problem, particularly in children. The complications due to occlusion by FB or related to procedures for removal can lead to morbidity and mortality. Most of the FBs are located in the unilateral bronchus, however, the organic FB can be multiple or bilaterally located when children chewed the FB. Here, we present a case of successful retrieval of bilateral bronchial FBs. Preoperatively, FB in the left main bronchus was diagnosed, however, FB of the right upper bronchus was not definitive on X-ray and CT scan. During the rigid bronchoscopy, occult FB in the right upper bronchus was detected and successfully removed.

• Journal of Veterinary Clinics
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• v.30 no.5
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• pp.390-393
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• 2013

This case study describes the imaging features of radiography and computed tomography (CT) in four small breed dogs with lung lobe torsion. The medical records, thoracic radiographs and CT images of four dogs with confirmed lung lobe torsion were retrospectively reviewed. Pleural effusion and increased lobar opacity/density were seen on all CT and thoracic radiography in all four dogs. CT revealed narrowed/collapsed bronchus in all four dogs, while this was only appreciated on one thoracic radiography. The vesicular emphysema pattern was seen on four CT but only on three radiographic examinations. The specific findings of lung lobe torsion were vesicular emphysema and a narrowed/collapsed bronchus. These findings were more easily recognized on CT than with thoracic radiographs.

• Journal of Korea Multimedia Society
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• v.14 no.11
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• pp.1383-1391
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• 2011

Following the appearance of the latest medical equipment with improved function, the importance of image analysis which enables effective image processing and analysis consistent with the hardware performance is on the rise. As well as, ongoing study is being done on the 2D medical image processing and 3D reconstruction. This paper segments chest CT images into each stage and finally shows 3D reconstruction of each segmented result. Among various image segmentation methods, Region Growing and apply sharpening and Gamma Controller as for image improvement for effective segmentation, image segmentation in order of bronchus and lung, bronchus, lung. Human organs image of segmented is use VTK(Visualization Toolkit) to make 3D reconstruction, two and three-dimensional medical image processing and analysis for lesions diagnosis are able to utilized.

• Korean Journal of Veterinary Research
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• v.57 no.4
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• pp.253-255
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• 2017

A 2-year-old, female Pomeranian dog was referred for dyspnea. Thoracic radiographs revealed left-sided mediastinal shift, increased soft tissue opacity in the caudal aspect of left thorax with loss of the left diaphragmatic silhouette, and dorsal elevation of mediastinal structures and heart from the sternum by lung tissue. The left main bronchus was visualized as an air-bronchogram and observed to abruptly discontinue at the level of the 10th rib. Thoracic computed tomography (CT) revealed absence of the left lung parenchyma and left pulmonary vessels with a rudimentary left main bronchus. The case was congenital pulmonary aplasia diagnosed via radiography and CT.

• Tuberculosis and Respiratory Diseases
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• v.44 no.3
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• pp.505-515
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• 1997

Background : We assessed the accuracy of staging in evaluation of bronchial invasion, thus found the role of CT in patients who underwent resective surgery in primary lung cancer. Materials and Methods : Authors retrospectively analized the preoperative CT scans of 156 patients receiving pneumonectomy(n = 95) and lobectomy(n = 61). Among lobectomy patients, 7 patients subsequently performed pneumonectomy because of positive resection margin of bronchus in frozen biopsy. We also retrospectively analized CT scans of non-operated 60 patients who performed sufficient bronchoscopic biopsy. Bronchial wall thickness more than 3mm, irregular wall thickening and reduction of diameter by CT were defined as bronchial invasion. The pathologic examination of resection margin were positive in 20, stump recurrence occurred in 6 of the operated group, and the pathologic examination of biopsy of bronchial wall were positive in 34 of the non operated group, and these were an regarded as bronchial invasion. Results : The CT assessment of bronchial invasion revealed low sensitivity (11.5%), low positive predictability(38%), but high specificity(96%) and relatively high accuracy (84%) in the operated group and higher sensitivity (62%), higher positive predictability(95%) in non-operated group. Conclusion : In lung cancer patients who underwent operation, CT showed very low sensitivity and positive predictability in evaluation of bronchial invasion. Because the usefulness of CT in evaluation of bronchial invasion is limited, therefore aggressive fiberoptic bronchoscopic biopsy is thought to be necessary before surgical attempt.

• Tuberculosis and Respiratory Diseases
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• v.56 no.1
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• pp.85-90
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• 2004

A 69 year-old female was admitted to the hospital due to intermittent hemoptysis for 1 month. Emergent bronchoscopy revealed mass-like lesion almost completely obstructing right intermediate bronchus with multiple hemorrhagic spots. Bronchial arterial angiography was performed but failed to find out actively bleeding vessel. Spiral computerized tomography of the chest showed contrast enhanced bulging of the posterior portion of right main bronchus into the lumen of right intermediate bronchus suggesting Rasmussen aneurysm. The AFB smear of bronchial washing fluid was positive. Pulmonary arterial angiography and embolization were not performed due to improvement of clinical course with medical conservative care. Here we report a case of endobronchial mass-like Rasmussen aneurysm grossly suspected by bronchoscopy and diagnosed by spiral CT, which successfully managed by medical conservative care with antituberculous agents.