CT identification of bronchopulmonary segments: 50 normal subjects

American Journal of Roentgenology (Impact Factor: 2.74). 02/1984; 142(1):47-52. DOI: 10.2214/ajr.142.1.47
Source: PubMed

ABSTRACT A systematic evaluation of the fissures, segmental bronchi and arteries, bronchopulmonary segments, and peripheral pulmonary parenchyma was made from computed tomographic (CT) scans of 50 patients with normal chest radiographs. Seventy percent of the segmental bronchi and 76% of the segmental arteries were identified. Arteries could be traced to their sixth- and seventh-order branches; their orientation to the plane of the CT section allowed gross identification and localization of bronchopulmonary segments.

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    • "Two Dimensional (2D) images require that the physician mentally determines 3D images from 2D slices, and this is difficult and error prone, particularly for more complex structures such as the lung (Naidich et al., 1993; Osborne et al., 1984). Three dimensional (3D) image-based displays of radiological data avoid this problem by explicit representing the data in 3D, literally improving the interpretation of the images (Sonka et al., 1994; Sonka et al., 1996; D'Souza, et al., 1996). "
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    ABSTRACT: Computed Tomography (CT) provides a large amount of data but the presentation of the data to a physician can be less than satisfactory. Ideally, the image data should be available to physicians in interactive 3D to allow for improved visualization, planning and diagnosis. A virtual reality representation that not only allows for the manipulation of the image but also allows for the user to, in effect, move inside the image remotely would be ideal. In this paper the research associated with virtual reality is discussed. A formalism is then presented to create, from the CT data, the virtual reality world in the Virtual Reality Modeling Language. An implementation is described of this formalism that uses the Internet to allow for users in remote locations to view and manipulate the virtual worlds.
    Computerized Medical Imaging and Graphics 11/2003; 27(6):525-34. DOI:10.1016/S0895-6111(03)00042-9 · 1.50 Impact Factor
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    ABSTRACT: Demonstration of central bronchiectasis (CB) with normal periph- eral bronchi is an essential requirement for the diagnosis of allergic bronchopul- monary aspergillosis (ABPA). Although the results of bronchography remain the gold standard for demonstration of central bronchiectasis they are not always diagnostic. Moreover, it is an unpleasant invasive procedure which may be diffi- cult to perform in a patient of allergic bronchopulmonary aspergillosis with acute severe asthma. In an attempt to find a safe and effective alternative to demonstrate central bronchiectasis computed tomography (CT) of the thorax was evaluated against bronchography. Twenty one patients with allergic bronchopulmonary aspergillosis underwent com- puted tomography of the thorax followed by bronchography. Of the 378 bron- chopulmonary segments available for analysis, 42 had to be excluded because of consolidation or non-filling of the contrast dye, leaving 336 segments for evaluation. CB was identified on CT in all 21 patients. Detailed analysis of the visualized segments revealed that computed tomography (using 8 mm contiguous scans) iden- tified 146 of the 212 segments showing central bronchiectasis on bronchography (sensitivity 70%) and 114 of the 124, read as normal on bronchography (specifi- city 92%). Supplemental 4 mm scans, used in 8 out of 21 patients improved the overall sensitivity of computed tomography to 83%, whilst the specificity remained unchanged at 92%. Thus, computed tomography of the thorax, being more acceptable to the patient, has the potential of being the investigation of choice for the demonstration of cen- tral bronchiectasis in patients with allergic bronchopulmonary aspergillosis.
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    ABSTRACT: Diese Studie versucht erstmals, die Validität der HRCT-Thorax im Vergleich zur Bronchographie als Goldstandard bei Kindern mit klinischem Verdacht auf Bronchiektasen zu ermitteln. Hierzu wurden Bronchographie- und HRCT-Thorax-Bilder von 12 spontan atmenden Kindern retrospektiv blind von jeweils 2 Untersuchern unabhängig voneinander ausgewertet. Die HRCT-Thorax zeigte hierbei eine Sensitivität von 82-94% und eine Spezifität von 100% für die Diagnose von Bronchiektasen im lobären Vergleich. Die Inter-Observer-Variabilität der Bronchographie-Befundung ergab 18% (k = 0,64), die der HRCT-Befundung 17% (k = 0,61). Es kann festgestellt werden, daß Bronchographie und HRCT-Thorax einander ergänzende Untersuchungsmethoden sind, und daß die HRCT in der Diagnostik von Bronchiektasen vor der Bronchographie stehen sollte.
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