Kamimura R, Takashima T
Department of Radiology, Kanazawa University School of Medicine, Ishikawa, Japan.
J Digit Imaging. 1995 Feb;8(1 Suppl 1):21-4. doi: 10.1007/BF03168062.
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.
我们使用单曝光双能减影技术和存储磷光体计算机X线摄影（CR）系统来评估各种肺部疾病。该方法的临床应用已在我们机构进行了研究。根据我们的经验，与传统CR图像相比，双能减影技术能更好地显示肺结节、气管支气管异常、肺血管疾病、结节内钙化以及肋骨病变。单曝光双能减影图像通过三明治技术获得，使用两块存储磷光体成像板，中间夹有一块1毫米厚的铜滤过板。前面的板获取低千伏图像，而后面的板获取高千伏图像。通过减影过程，我们可以可视化软组织和骨骼图像以及未减影的数字图像。
