Subtle pulmonary disease: detection with computed radiography versus conventional chest radiography.

Ishigaki, Takeo; Endo, Takashi; Ikeda, Mitsuru; Kono, Michihisa; Yoshida, Shinzo; Ikezoe, Junpei; Murata, Kiyoshi; Matsumoto, Masaki

doi:10.1148/radiology.201.1.8816520

Cited by 37 publications

(37 citation statements)

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“…For the purposes of this study, CR was considered the 'gold standard' for technical quality. 16 In terms of technical factors, rotation evaluation was similar for both modalities, while the erect Statscan images were prone to exposure artefacts in the form of the chevron exposure artefact mentioned earlier.…”

Section: Discussionmentioning

confidence: 77%

A pilot study evaluating erect chest imaging in children, using the Lodox Statscan digital X-ray machine

et al. 2009

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Background. Chest radiography accounts for a significant proportion of ionising radiation in children. The radiation dose of radiographs performed on the Lodox Statscan system has been shown to be lower than that of a computed radiography (CR) system. The role of the Lodox Statscan (subsequently referred to as the Statscan) in routine erect chest radiography in children has not been evaluated. Objective. To evaluate the image quality and diagnostic accuracy of erect paediatric chest radiographs obtained with the Statscan and to compare these with conventional erect chest images obtained with a CR system. Materials and methods. Thirty-three children with suspected chest pathology were enrolled randomly over a period of 3 months. Erect chest radiographs were obtained with the Statscan and a Shimadzu R-20J X-ray machine coupled with a Fuji FCR 5000 CR system. Image quality and diagnostic accuracy and diagnostic capability of the two modalities were evaluated and compared. Results. The erect Statscan allowed superior visualisation of the 3 major airways. Statscan images, however, demonstrated exposure and movement artifacts, with hemidiaphragms and ribs most prone to movement. Bronchovascular clarity was also considered unsatisfactory on Statscan images. Conclusion. The Statscan has limitations in erect chest radiography in terms of movement artefacts, exposure fluctuations, and poor definition of lung markings. Despite this, the Statscan allows better visualisation of the major airways, equivalent to a 'high kV' film, at a fraction of the radiation dose, which supports the finding of an earlier study evaluating Statscan images in trauma cases, where the images were taken supine. The Statscan has great potential in assisting in the diagnosis of childhood tuberculosis where airway narrowing occurs as a result of nodal compression.

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Section: Discussionmentioning

confidence: 77%

A pilot study evaluating erect chest imaging in children, using the Lodox Statscan digital X-ray machine

et al. 2009

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“…14 Briefl y, the collection of these images was carried out as follows: The CR images were obtained with the storage phosphor plates (ST III; Fujifi lm, Tokyo, Japan), and various parameters were used for making images similar to conventional screen-fi lm images. 1,14 The 63 patients (31 men, 32 women) underwent high-resolution computed tomography (HRCT) of the chest within 1 week of acquiring these chest CR images. 1,14 The fi nal diagnosis for each patient was made initially using their HRCT images and was established by a side-by-side review of their chest plain radiography and HRCT images by the consensus of a panel of 10 experienced radiologists who did not participate in the image-reading experiment.…”

Section: Test Image Preparationmentioning

confidence: 99%

“…1,14 The 63 patients (31 men, 32 women) underwent high-resolution computed tomography (HRCT) of the chest within 1 week of acquiring these chest CR images. 1,14 The fi nal diagnosis for each patient was made initially using their HRCT images and was established by a side-by-side review of their chest plain radiography and HRCT images by the consensus of a panel of 10 experienced radiologists who did not participate in the image-reading experiment. 1,14 The CR image data were stored as the image data with a matrix size of 1760 × 1760 or 1760 × 2140 and with a gray level of 10 bits and were transformed into the DICOM image fi le format.…”

Section: Test Image Preparationmentioning

confidence: 99%

Influence of liquid crystal display monitors on observer performance for detection of diffuse pulmonary disease on chest radiographs

et al. 2007

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“…Some studies reported that the lower spatial resolution would result in a lower detectability of linear or micro-nodular opacities, as seen in pleural lines or interstitial disease [2][3][4]. Other authors, however, concluded that 2-K hardcopy chest radiographs perform equivalently to film if adequate processing is applied [5][6][7][8]10]. Similarly it has been shown in contrast detail phantom studies that detail detectability is described insufficiently by pixel size and spatial resolution alone, but relies on a complex interaction of contrast and spatial resolution more adequately described by the modulation transfer function (MTF; [9,11,16]).…”

Section: Introductionmentioning

confidence: 99%

Two K versus 4 K storage phosphor chest radiography: detection performance and image quality

et al. 2007

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The purpose of this study was to evaluate the effect of matrix size (4-K versus 2-K) in digital storage phosphor chest radiographs on image quality and on the detection of CT-proven thoracic abnormalities. In 85 patients who underwent a CT of the thorax, we obtained two additional posteroanterior storage phosphor chest radiographs, one with a matrix size of 3,520x4,280 (=4-K) and the other with a matrix size of 1,760x2,140 (=2-K). Acquisition, processing and presentation parameters were identical for all radiographs. Two radiologists evaluated the presence of mediastinal, pleural, and pulmonary abnormalities on hard copies of the radiographs, applying ROC analysis. In addition, four radiologists were asked to subjectively rank differences in image quality and to assess the demarcation of anatomic landmarks comparing the images in a blinded side-by-side manner. These data were analyzed using a two-sided binomial test with a significance level of P<0.05. Both tests, the ROC analysis of the detection performance and the binomial test of the subjective quality ratings, did not reveal significant differences between the two matrix sizes. Compared to 2-K radiographs, 4-K storage phosphor chest radiographs do not provide superior detection performance or image quality when evaluated in identical hard copy formats.

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Subtle pulmonary disease: detection with computed radiography versus conventional chest radiography.

Abstract: Hard-copy and soft-copy chest CR images are acceptable and available in place of screen-film images for primary interpretation of subtle interstitial lung diseases.

Cited by 37 publications

References 0 publications

A pilot study evaluating erect chest imaging in children, using the Lodox Statscan digital X-ray machine

A pilot study evaluating erect chest imaging in children, using the Lodox Statscan digital X-ray machine

Influence of liquid crystal display monitors on observer performance for detection of diffuse pulmonary disease on chest radiographs

Two K versus 4 K storage phosphor chest radiography: detection performance and image quality

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