Clinical application of single dual-energy subtraction technique with digital storage-phosphor radiography.
We used a single-exposure dual-energy subtraction technique with a storage-phosphor computed radiography (CR) system to evaluate various pulmonary diseases. Clinical applications of this method have been studies at our institution. In our experience, the dual-energy subtraction technique provided better visualization of pulmonary nodules, tracheobronchial abnormalities, pulmonary vascular diseases, calcification in a nodule, and rib lesions than conventional CR images did. Single-exposure dual-energy subtraction images were obtained with a sandwich technique using two storage-phosphor imaging plates with a 1-mm-thick copper filter interleaved between the two. The front plate obtains a lower kilovoltage image, whereas the back plate obtains a higher kilovoltage image. We can visualize soft tissue and bone images as well as unsubtracted digital images by the subtraction process.
Kamimura
R
R
Department of Radiology, Kanazawa University School of Medicine, Ishikawa, Japan.
Takashima
T
T
D001982:Bronchial Diseases / Q000000981:diagnostic imaging; D002114:Calcinosis / Q000000981:diagnostic imaging; D006801:Humans; D008168:Lung / Q000098:blood supply; D008171:Lung Diseases / Q000000981:diagnostic imaging*; D008175:Lung Neoplasms / Q000000981:diagnostic imaging; D012372:ROC Curve; D011856:Radiographic Image Enhancement; D015900:Radiography, Dual-Energy Scanned Projection; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging; D013382:Subtraction Technique; D014133:Tracheal Diseases / Q000000981:diagnostic imaging; D014652:Vascular Diseases / Q000000981:diagnostic imaging; D014963:X-Ray Intensifying Screens