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首页> 外文期刊>Acta Radiologica >Clinical experience of photon counting breast tomosynthesis: comparison with traditional mammography.
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Clinical experience of photon counting breast tomosynthesis: comparison with traditional mammography.

机译：光子计数乳房断层合成的临床经验：与传统乳腺X线摄影术的比较。

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BACKGROUND: In two-dimensional mammography, a well-known problem is over- and underlying tissue which can either obstruct a lesion or create a false-positive result. Tomosynthesis, with an ability to layer the tissue in the image, has the potential to resolve these issues. PURPOSE: To compare the diagnostic quality, sensitivity and specificity of a single tomosynthesis mammography image and a traditional two-view set of two-dimensional mammograms and to assess the comfort of the two techniques. MATERIAL AND METHODS: One hundred and forty-four women, mainly chosen because of suspicious features on standard mammograms (76 malignant), had a single tomosynthesis image taken of one breast using a novel photon counting system. On average, the dose of the tomosynthesis images was 0.63 times that of the two-view images and the compression force during the procedure was halved. The resulting images were viewed by two radiologists and assessed both individually and comparing the two techniques. RESULTS: In 56% of the cases the radiologists rated the diagnostic quality of the lesion details higher in the tomosynthesis images than in the conventional images (and in 91% equal or higher), which means there is a statistically significant preference for the tomosynthesis technique. This included the calcifications which were rated as having better quality in 41% of the cases. While sensitivity was slightly higher for traditional mammography the specificity was higher for tomosynthesis. However, neither of these two differences was large enough to be statistically significant. CONCLUSION: The overall accuracy of the two techniques was virtually equal despite the radiologist's very limited experience with tomosynthesis images and vast experience with two-dimensional mammography. As the diagnostic quality of the lesion details in the tomosynthesis images was valued considerably higher this factor should improve with experience. The patients also favored the tomosynthesis examination, rating the comfort of the procedure as much higher than regular mammography which might affect screening attendance.
机译：背景：在二维乳腺X线摄影术中，一个众所周知的问题是上层和下层组织，它们可​​能阻塞病变或产生假阳性结果。断层合成具有在图像中分层组织的能力，具有解决这些问题的潜力。目的：比较单层断层摄影乳腺X线摄影图像和传统的二维乳腺X线摄影的二维影像的诊断质量，敏感性和特异性，并评估这两种技术的舒适性。材料与方法：主要由于标准乳房X线照片（76例恶性肿瘤）上的可疑特征而选出的144名妇女使用新型光子计数系统拍摄了一个乳房的单层断层合成图像。平均而言，断层合成图像的剂量是两视图图像的剂量的0.63倍，并且过程中的压缩力减半。两名放射科医生查看了产生的图像，分别进行了评估并比较了两种技术。结果：在56％的病例中，放射线医师认为断层合成图像中的病变细节的诊断质量高于常规图像（91％相等或更高），这意味着在统计学上优先选择断层合成技术。其中包括钙化，在41％的病例中，钙化的质量较好。尽管传统乳腺X线摄影的敏感性略高，但断层合成的特异性较高。但是，这两个差异都不大到具有统计学意义。结论：尽管放射线医师在断层合成图像方面的经验非常有限，而且在二维乳腺X线摄影方面经验丰富，但这两种技术的总体精度几乎相等。由于在断层合成图像中对病变细节的诊断质量得到了相当高的评价，因此该因素应随经验而改善。患者还喜欢进行断层合成检查，认为该手术的舒适度比常规的乳腺X线摄影术高得多，这可能会影响筛查的就诊率。

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