Evaluation of the usefulness of color digital summation radiography in temporally sequential digital radiographs: a phantom study
| Autor: | Takashi Ueguchi, Hiroaki Naito, Mitsuhiro Koyama, Mitusko Tsubamoto, Takeshi Johkoh, Noriyuki Tomiyama, Hironobu Nakamura, Takenori Kozuka, Yuji Ogata, Mitsuhiro Matsumoto, Shinichi Tamura, Sachiko Murai, Seiki Hamada |
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| Rok vydání: | 2006 |
| Předmět: |
Observer Variation
medicine.medical_specialty Radiation Lung Neoplasms business.industry Phantoms Imaging Radiography Color Solitary Pulmonary Nodule Image processing Imaging phantom Radiographic Image Enhancement Random Allocation Oncology medicine Radiology Nuclear Medicine and imaging Medical physics Radiography Thoracic business Nuclear medicine |
| Zdroj: | Radiation medicine. 24(3) |
| ISSN: | 0288-2043 |
| Popis: | The purpose of this study was to assess the usefulness of color digital summation radiography (CDSR) for detection of nodules on chest radiographs by observers with different levels of experience.A total of 30 radiographs of chest phantoms with abnormalities and 30 normal ones were arranged at random. Set A was conventional radiographs only. Set B consisted of both conventional radiographs and CDSR images, which were colored with magenta. Five chest radiologists and five residents evaluated both image sets on a TFT monitor. The observers were asked to rate each image set using a continuous rating scale. The reading time for each set was also recorded.In set A, the performance of chest radiologists was significantly superior to that of the residents (P0.05). However, in set B, there was no significant difference in the performance of the chest radiologists and the residents. In both observer groups, the mean reading time per case in set B was significantly shorter than that in set A (P0.01).By using CDSR, the detection capability of observers with little experience improves and is comparable to that of experienced observers. Moreover, the reading time becomes much shorter using CDSR. |
| Databáze: | OpenAIRE |
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