Digital chest tomosynthesis outperforms conventional x-ray

Rebekah Moan
Nov 5, 2013

Tuesday, December 3 | 3:00 p.m.-3:10 p.m. | SSJ06-01 | Room S404CD
Digital chest tomosynthesis significantly improves the detection of pulmonary nodules compared with chest x-ray and is recommended for imaging nodules of actionable size, according to a study to be presented on Tuesday at RSNA 2013.

More than 150 patients were enrolled in the international, multi-institution, multireader study. Of these, 115 were positive for CT-confirmed pulmonary nodules. Patients were imaged with chest CT, chest x-ray (posteroanterior and lateral), dual-energy radiography, and digital tomosynthesis. There were 516 nodules.

Overall detection sensitivity for digital tomosynthesis was 13.5% for all nodules and 27.8% for nodules larger than 5 mm. Overall detection sensitivity for chest x-ray was 3.8% for all nodules and 9% for nodules larger than 5 mm.

Based on the results, the researchers concluded that digital tomosynthesis can outperform chest x-ray for lung nodule detection and determining actionability using Fleischner Society criteria.

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