Jónsson A, Jonsson K, Eklund K, Holje G, Pettersson H
Department of Diagnostic Radiology, University Hospital, Lund, Sweden.
Acta Radiol. 1995 Jul;36(4):429-33.
The diagnostic information and radiation dose in scoliosis examinations performed with air-gap technique using stimulable phosphor imaging plates were determined in a prospective study. Overlapping p.a. images of the thoracic and lumbar spine in 9 patients were obtained with 4 different exposure settings according to patient size. Equal exposure settings were used for the 2 images. Two images of 18 were judged inferior in depicting the landmarks of scoliosis measurement, requiring re-exposure. Sixteen images were judged of adequate or good quality. The mean entrance doses in the central beam for the 4 patient groups were in the interval of 0.05 to 0.12 mGy for both images. The skin doses on the breasts were in the range of 0.00 to 0.03 mGy. The presented technique thus results in a low radiation dose with sufficient diagnostic information in radiography of scoliosis.
在一项前瞻性研究中，测定了使用可激发磷光成像板的气隙技术进行脊柱侧弯检查时的诊断信息和辐射剂量。根据患者体型，对9名患者的胸腰椎进行了4种不同曝光设置的前后位重叠图像拍摄。两张图像使用相同的曝光设置。18张图像中有2张在描绘脊柱侧弯测量标志方面被判定质量较差，需要重新曝光。16张图像被判定质量足够或良好。两组4名患者的中央射束平均入射剂量在两张图像中均为0.05至0.12 mGy。乳房部位的皮肤剂量在0.00至0.03 mGy范围内。因此，所提出的技术在脊柱侧弯X线摄影中可实现低辐射剂量并提供足够的诊断信息。
