Analysis of the impact of digital tomosynthesis on the radiological investigation of patients with suspected pulmonary lesions on chest radiography

作者：Quaia Emilio^*; Baratella Elisa; Cernic Stefano; Lorusso Arianna; Casagrande Federica; Cioffi Vincenzo; Cova Maria Assunta

来源：European Radiology, 2012, 22(9): 1912-1922.

DOI：10.1007/s00330-012-2440-3

• Radiography
• CT
• Tomosynthesis
• Lung
• Chest

To assess the impact of digital tomosynthesis (DTS) on the radiological investigation of patients with suspected pulmonary lesions on chest radiography (CXR). %26lt;br%26gt;Three hundred thirty-nine patients (200 male; age, 71.19 +/- 11.9 years) with suspected pulmonary lesion(s) on CXR underwent DTS. Two readers prospectively analysed CXR and DTS images, and recorded their diagnostic confidence: 1 or 2 = definite or probable benign lesion or pseudolesion deserving no further diagnostic workup; 3 = indeterminate; 4 or 5 = probable or definite pulmonary lesion deserving further diagnostic workup by computed tomography (CT). Imaging follow-up by CT (n = 76 patients), CXR (n = 256) or histology (n = 7) was the reference standard. %26lt;br%26gt;DTS resolved doubtful CXR findings in 256/339 (76 %) patients, while 83/339 (24 %) patients proceeded to CT. The mean interpretation time for DTS (mean +/- SD, 220 +/- 40 s) was higher (P %26lt; 0.05; Wilcoxon test) than for CXR (110 +/- 30 s), but lower than CT (600 +/- 150 s). Mean effective dose was 0.06 mSv (range 0.03-0.1 mSv) for CXR, 0.107 mSv (range 0.094-0.12 mSv) for DTS, and 3 mSv (range 2-4 mSv) for CT. %26lt;br%26gt;DTS avoided the need for CT in about three-quarters of patients with a slight increase in the interpretation time and effective dose compared to CXR. %26lt;br%26gt;aEuro cent Digital tomosynthesis (DTS) improves the diagnostic confidence of chest radiography (CXR) %26lt;br%26gt;aEuro cent DTS reduces the need for CT for a suspected pulmonary lesion %26lt;br%26gt;aEuro cent DTS only imparts a radiation dose of around two CXRs %26lt;br%26gt;aEuro cent DTS takes longer to interpret than conventional chest radiography.

• 出版日期2012-9