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[Pulmonary functional diagnostic imaging using a dynamic flat-panel detector: comparison with findings in pulmonary scintigraphy].
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tanaka, Rie Sanada, Shigeru Fujimura, Masaki Yasui, Masahide Tsuji, Shiro Hayashi, Norio Nanbu, Yuko Matsui, Osamu |
| Copyright Year | 2009 |
| Abstract | Pulmonary ventilation and circulation dynamics are reflected on dynamic chest radiographs as changes in X-ray translucency,i.e., pixel values. The present study was performed to develop a pulmonary functional evaluation method based on the changes in pixel value, and to investigate the clinical usefulness of our method. Sequential chest radiographs of 20 subjects (abnormal,n=12; normal,n=8) during respiration were obtained with a dynamic flat-panel detector (FPD) system. The average pixel value in each local area was measured tracking the same area. To facilitate visual evaluation, the results were mapped on the original image using a grayscale in which small changes were shown in black and large changes were shown in white. In our clinical evaluation in comparison with a pulmonary scintigraphy, pulmonary ventilation disorder was indicated as a reduction of changes in pixel values. In many patients, there was a correlation between our result and a pulmonary scintigraphy (0.7 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.jstage.jst.go.jp/article/jjrt/65/6/65_6_728/_pdf |
| PubMed reference number | 19602797v1 |
| Volume Number | 65 |
| Issue Number | 6 |
| Journal | Nihon Hoshasen Gijutsu Gakkai zasshi |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Detectors Diagnostic radiologic examination Grayscale Color Map Lung diseases Patients Plain chest X-ray Pulmonary Valve Insufficiency Radiographic imaging procedure Radionuclide Imaging Respiration |
| Content Type | Text |
| Resource Type | Article |
