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Digital tomosynthesis, dual-energy subtraction, bone suppression imaging, and ultra-low dose CT for lung cancer screening Shuji Sakai 1 1Department of Diagnostic Imaging and Nuclear Medicine Tokyo Women’s Medical University Keyword: 肺癌 , digital radiography(DR) , 低線量CT pp.9-14
Published Date 2023/1/31
DOI https://doi.org/10.18888/rp.0000002224
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Tomosynthesis uses pulse X-ray projection and a computer-controlled tube mover, and special reconstruction algorithms to produce section images. Tomosynthesis improved sensitivity in the detection of CT-proven lung nodules compared with conventional radiography. Dual-energy subtraction(DES)using digital radiography distinguish bone from soft tissue. DES has been shown by several observer performance studies to improve the observers’ ability to detect and characterize lung nodules. Furthermore, we can also use Bone Suppression Imaging(BSI)produced from single conventional DR images. BSI suppresses rib and clavicle using deep learning technique. Ultra-low-dose CT with iterative reconstruction have been used for lung cancer screening and a diagnostic ability comparable to low dose CT with respect to the detection of pulmonary nodules. In this review, usefulness of these modalities with low exposure dose for lung cancer screening will be explained.


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電子版ISSN 印刷版ISSN 0009-9252 金原出版

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