A Retrospective Study of Chest Tomosynthesis as a Tool for Optimizing the use of Computed Tomography Resources and Reducing Patient Radiation Exposure

Johnsson, Åse A.; Vikgren, Jenny; Båth, Magnus

doi:10.1016/j.acra.2014.06.002

Cited by 19 publications

(16 citation statements)

References 26 publications

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“…DT also permits verification and/or localization of suspected pulmonary nodules or densities seen at conventional radiography before proceeding to CT; this application can save medical cost (32) and radiation exposure by reducing the number of unnecessary CT examinations (8,(33)(34)(35). Terzi et al (36) reported that in a high-risk asymptomatic patient population, the rate of lung cancer detection with DT was comparable to that reported for low-dose lung cancer CT screening.…”

Section: Chest Imagingmentioning

confidence: 98%

Whole-Body Clinical Applications of Digital Tomosynthesis

Machida

Yuhara²,

Tamura³

et al. 2016

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With flat-panel detector mammography, radiography, and fluoroscopy systems, digital tomosynthesis (DT) has been recently introduced as an advanced clinical application that removes overlying structures, enhances local tissue separation, and provides depth information about structures of interest by providing high-quality tomographic images. DT images are generated from projection image data, typically using filtered back-projection or iterative reconstruction. These low-dose x-ray projection images are easily and swiftly acquired over a range of angles during a single linear or arc sweep of the x-ray tube assembly. DT is advantageous in a variety of clinical contexts, including breast, chest, head and neck, orthopedic, emergency, and abdominal imaging. Specifically, compared with conventional mammography, radiography, and fluoroscopy, as a result of reduced tissue overlap DT can improve detection of breast cancer, pulmonary nodules, sinonasal mucosal thickening, and bone fractures and delineation of complex anatomic structures such as the ostiomeatal unit, atlantoaxial joint, carpal and tarsal bones, and pancreatobiliary and gastrointestinal tracts. Compared with computed tomography, DT offers reduced radiation exposure, better in-plane resolution to improve assessment of fine bony changes, and less metallic artifact, improving postoperative evaluation of patients with metallic prostheses and osteosynthesis materials. With more flexible patient positioning, DT is also useful for functional, weight-bearing, and stress tests. To optimize patient management, a comprehensive understanding of the clinical applications and limitations of whole-body DT applications is important for improvement of diagnostic quality, workflow, and cost-effectiveness. Online supplemental material is available for this article. (©)RSNA, 2016.

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Section: Chest Imagingmentioning

confidence: 98%

Whole-Body Clinical Applications of Digital Tomosynthesis

Machida

Yuhara²,

Tamura³

et al. 2016

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“…[14][15][16][17][18][19][20][21][22][23][24][25] Furthermore, studies have indicated that the use of chest tomosynthesis in the clinical routine may help to optimize the use of computed tomography (CT) imaging resources. [26][27][28][29] Most tomosynthesis image reconstruction algorithms are based on a technique referred to as shift and add. 1 By shifting the projection images relative to each other and adding them together, a plane of interest within the patient is brought in to focus while structures existing outside the plane are blurred.…”

Section: Introductionmentioning

confidence: 99%

Image quality dependency on system configuration and tube voltage in chest tomosynthesis—A visual grading study using an anthropomorphic chest phantom

et al. 2015

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At the standard dose level of the VolumeRAD system, the potential benefits from increasing the dose per projection do not fully compensate for the negative effects resulting from a reduction in the number of projection images. Consequently, the default configuration consisting of 60 projection images acquired over 30° is a good alternative. The tube voltage used in tomosynthesis does not have a large impact on the image quality.

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“…As tomosynthesis systems are modified radiography systems, advantages of chest tomosynthesis also include the relative simplicity of the technique. In general, the possibility of adding a tomosynthesis examination to a chest radiograph in order to rule out or confirm suspicious lesions, and thereby possibly avoiding the need for CT, has been identified as one of the major areas of clinical use for the technique (47,48).…”

Section: Discussionmentioning

confidence: 99%