Virtual tools for imaging of the thorax

Ferretti, G.; Bricault, Ivan; Coulomb, M

doi:10.1183/09031936.01.00217701

Cited by 50 publications

(23 citation statements)

References 67 publications

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“…It was the software using curved MPR that allowed us to do so. Although the idea of threedimensional analysis is not entirely new (22,(36)(37)(38), it has not been applied to measuring airway dimensions in patients with COPD. In COPD, the quantitative evaluation of the airways using CT has received less attention than the analysis of emphysema.…”

Section: Discussionmentioning

confidence: 99%

Airflow Limitation and Airway Dimensions in Chronic Obstructive Pulmonary Disease

Hasegawa

Nasuhara

Onodera

et al. 2006

Am J Respir Crit Care Med

371

352

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Rationale: Chronic obstructive pulmonary disease (COPD) is characterized by airflow limitation caused by emphysema and/or airway narrowing. Computed tomography has been widely used to assess emphysema severity, but less attention has been paid to the assessment of airway disease using computed tomography. Conclusions:We are the first to use three-dimensional computed tomography to demonstrate that airflow limitation in COPD is more closely related to the dimensions of the distal (small) airways than proximal (large) airways.

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Section: Discussionmentioning

confidence: 99%

Airflow Limitation and Airway Dimensions in Chronic Obstructive Pulmonary Disease

Hasegawa

Nasuhara

Onodera

et al. 2006

Am J Respir Crit Care Med

371

352

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“…Spiral CT with the use of multiplanar reconstructions and 3D reformations is helpful in the assessment of focal airway stenoses and involvement of central airways by pulmonary carcinoma [3]. Because of the ability to provide simultaneous depiction of endoscopic images (CT bronchoscopy) and adjacent tumour or enlarged nodes, spiral CT with volume rendering can be a helpful guide to transbronchial biopsy.…”

Section: Airway Diseasesmentioning

confidence: 99%

“…In recent months the European Respiratory Journal has published a series of articles on advances in imaging [1][2][3][4][5][6][7][8]. These articles have reviewed the current role of imaging in the diagnosis and management of various airway and pulmonary diseases and have highlighted potential areas of research.…”

mentioning

confidence: 99%

Advances in imaging

Müller¹

2001

European Respiratory Journal

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In recent years there have been major advances in chest imaging. These include significant refinements in previously available techniques such as computed tomography (CT) and magnetic resonance (MR) imaging and the introduction of new techniques into the clinical armamentarium, particularly positron emission tomography (PET) imaging.These advances have led to changes in the diagnostic approach to a number of conditions, particularly pulmonary embolism, lung cancer, diseases of the large and small airways, and diffuse lung disease. They have also brought new insights into the pathophysiology of lung disease.State of the art CT and MR imaging now allow objective quantification of lung disease and assessment of regional changes in ventilation and perfusion caused by airway and parenchymal abnormalities.The aim of this article is to summarize the most important clinical applications of the recent advances in imaging and to emphasize the topics of imaging research likely to attract particular attention from radiologists and clinicians in the near future. In recent months the European Respiratory Journal has published a series of articles on advances in imaging [1][2][3][4][5][6][7][8]. These articles have reviewed the current role of imaging in the diagnosis and management of various airway and pulmonary diseases and have highlighted potential areas of research. The present article will only consider what the author deems to be the most important clinical applications and the most pressing topics of imaging research. The article will focus on imaging in pulmonary embolism, lung cancer, airway diseases, and parenchymal lung disease. The discussion will be based on recent advances in computed tomography (CT) and magnetic resonance (MR) technology and the introduction of positron emission tomography (PET) imaging.The main developments of CT in the chest have been the introduction of high-resolution CT (HRCT), spiral CT and, more recently, multislice CT.HRCT is defined as thin-section CT (1-2-mm collimation scans) optimized by using a high spatialresolution (edge enhancing) algorithm. Several studies have shown that HRCT closely reflects the macroscopic (gross) pathological findings. HRCT presently has the best sensitivity and specificity of any imaging method for the assessment of focal and diffuse lung diseases. Spiral (helical) CT provides continuous scanning while the patient is being moved continuously through the CT gantry. It allows true volumetric scanning of the entire lung during a single breath hold and has replaced the slice-by-slice acquisition of conventional CT. Spiral CT permits for reconstruction of images in any plane as well as three-dimensional (3D) display of structures. With the use of graphics based software programs, spiral CT allows depiction of the luminal surface of the airways with images that resemble those of bronchoscopy (CT bronchoscopy) or bronchography (CT bronchography). The combination of spiral CT with administration of intravenous contrast (CT angiography) allows visualizat...

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“…Examples of techniques are surface and volume rendering, multi-planar reformatted (MPR) slice viewing, projection imaging, thinslab viewing, and endoluminal (virtual endoscopic) rendering [10,12,14,[23][24][25][26]. But, in reality, the visualization actually used in clinical practice is limited to previewing transverse-plane 2D slice images, occasional coronal and sagittal MPR sections, gray-scale windowing and thresholding to highlight structures of interest, and simple annotation and report generation.…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, physicians still primarily rely on either view panels to view a CTscan film study or on computer workstations to do simple scrolling through CT slice data. Thus, the information contained in MDCT scans is woefully underutilized -this is a well-recognized problem in current radiology research [12,24]. Bronchoscopes have a related limitation in that they do not enable the physician to see beyond (extraluminally) the airway walls, nor do they enable the physician to see beyond the current position of the device; i.e., there is no look ahead [23].…”

Section: Introductionmentioning

confidence: 99%

3D CT-Video Fusion for Image-Guided Bronchoscopy

Higgins¹,

Helferty²,

Lü³

et al. 2008

Computerized Medical Imaging and Graphics

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Bronchoscopic biopsy of the central-chest lymph nodes is an important step for lung-cancer staging. Before bronchoscopy, the physician first visually assesses a patient's three-dimensional (3D) computed tomography (CT) chest scan to identify suspect lymph-node sites. Next, during bronchoscopy, the physician guides the bronchoscope to each desired lymph-node site. Unfortunately, the physician has no link between the 3D CT image data and the live video stream provided during bronchoscopy. Thus, the physician must essentially perform biopsy blindly, and the skill levels between different physicians differ greatly. We describe an approach that enables synergistic fusion between the 3D CT data and the bronchoscopic video. Both the integrated planning and guidance system and the internal CT-video registration and fusion methods are described. Phantom, animal, and human studies illustrate the efficacy of the methods.

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Virtual tools for imaging of the thorax

Cited by 50 publications

References 67 publications

Airflow Limitation and Airway Dimensions in Chronic Obstructive Pulmonary Disease

Airflow Limitation and Airway Dimensions in Chronic Obstructive Pulmonary Disease

Advances in imaging

3D CT-Video Fusion for Image-Guided Bronchoscopy

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