Jensen T W
School of Dentistry, University of Utrecht, The Netherlands.
Oral Surg Oral Med Oral Pathol. 1990 Oct;70(4):502-15. doi: 10.1016/0030-4220(90)90219-i.
Previous comprehensive clinical studies have shown that free-focus radiography (FFR) may be used to improve image detail and diagnostic value in panoramic radiography of the teeth and jaws. This study demonstrated the clinical image quality in fine-detail panoramic FFR surveys relative to conventional surveys made by rotational panoramic or intraoral radiography. Cases of particular diagnostic interest with respect to common dental disease and changes in the jaws were included. The radiographic area of diagnostic interest depicted in FFR surveys generally resembled that of conventional dental radiographic surveys with the use of intraoral films rather then those of conventional rotational panoramic surveys.
以往的综合临床研究表明，自由聚焦放射摄影（FFR）可用于提高牙齿和颌骨全景放射摄影的图像细节和诊断价值。本研究展示了与传统旋转全景或口腔内放射摄影相比，精细细节全景FFR检查的临床图像质量。纳入了关于常见牙科疾病和颌骨变化的具有特殊诊断意义的病例。FFR检查中显示的诊断感兴趣的放射区域通常类似于使用口腔内胶片的传统牙科放射检查，而不是传统旋转全景检查。
