Fast Scanning Tomosynthesis for the Detection of Pulmonary Nodules

Abstract

: The diagnostic performance of fast scanning tomosynthesis for the detection of pulmonary nodules was significantly superior to that of radiography. The TPF was affected by the size, CT attenuation value, and location of the nodule, in both fast scanning tomosynthesis and radiography.

Digital Tomosynthesis for Evaluating Metastatic Lung Nodules: Nodule Visibility, Learning Curves, and Reading Times

“…DT may be more useful than CT, as it detected a higher percentage of malignant nodules. In addition, the reported DT radiation dose is 20-30 times lower than that of a standard-dose chest CT and can visualize 70-90% of nodules detected on CT (3, 4, 5). However, some clinicians may suggest that radiation dose is not a critical issue in patients who have an underlying malignancy, whereas others may argue that low dose or ultra-low dose chest CT may be better options for detecting nodules at a low radiation dose.…”

“…Digital tomosynthesis (DT) of the chest has emerged as a technically feasible imaging modality following the introduction of high-speed, self-scanning flat-panel detectors, and its use has resulted in improved detection of lung nodules (1, 2, 3, 4, 5) compared with that of conventional chest radiography. Nevertheless, few radiologists are familiar with DT, as it is a relatively new chest imaging technique.…”

“…We hypothesized that if a substantial proportion of malignant nodules are also visible on DT, DT may be a good complementary imaging tool to evaluate pulmonary nodules. Although observer performance tests for detecting nodules using DT have been reported (1, 3, 5), there is a paucity of studies regarding the visibility of all lung nodules on DT based on a sophisticated reference standard set-up on thin-section CT.…”

Comparison of digital tomosynthesis and computed tomography for lung nodule detection in SOS screening program

“…In the Table 1 SOS study, we showed that 6.5 × 10 −1 % of subjects had lung cancer, to be compared to a nearly 500 times lower risk of REID (0.3 × 10 −3 %) for the same pathology, suggesting that the screening procedure, even if expose the subjects to radiation, is advantageous. All the published studies [14,16,[26][27][28] on DTS report the sensitivity of DTS using CT as a reference, defining sensitivity as the ratio of number of nodules detected by DTS and CT. This is a direct consequence of the design of these studies that were conceived to test DTS on a population of subjects that already performed, for different reasons, a CT scan.…”

A simple method to retrospectively estimate patient dose‐area product for chest tomosynthesis examinations performed using VolumeRAD

“…[9][10][11][12][13][14][15][16] As opposed to computed tomography (CT), the radiation dose from a chest tomosynthesis examination is comparable to that from a conventional chest radiography examination and-depending on the system used-effective doses in the order of 0.05-0.2 mSv have been reported. 9,12,14,[17][18][19][20] Additionally, as the financial cost of a chest tomosynthesis examination usually is much lower than of a corresponding CT examination 15 and the patient throughput is higher, 21,22 it may be beneficial for healthcare if chest tomosynthesis could be used for certain tasks for which CT is used today. Taking into account recent evaluations showing the clinical potential of chest tomosynthesis, [23][24][25][26] it can therefore be anticipated that the frequency of the examination will increase in the near future.…”