Tsutomu Gomi PhD, Presenter: Nothing to Disclose

Katsuya Fujita BSc, Abstract Co-Author: Nothing to Disclose

Tokuo Umeda PhD, Abstract Co-Author: Nothing to Disclose

Akiko Okawa MD, RN, Abstract Co-Author: Nothing to Disclose

Tohoru Takeda MD, PhD, Abstract Co-Author: Nothing to Disclose

1) To use reconstruction techniques [filtered back projection (FBP) and iterative reconstruction (IR)] and image processing [wavelet denoising (WD)] to identify indications of digital breast tomosynthesis (DBT) at various exposure doses, 2) to compare DBT and radiography, and 3) to select an appropriate reconstruction technique or WD and exposure dose for breast lesion detection.

1. Overview of FBP, IR [simultaneous iterative reconstruction techniques (SIRT)], and WD for DBT and radiography 2. Diagnostic imaging properties     ·Efficacy with regard to normal structure and lesion detection 3. Parameter review     ·Signal difference to noise ratio and artifact spread function [Wu et al. Med. Phys. 31, (2004)]     ·Root mean square error     ·Average glandular dose 4. Clinical relevance Summary: DBT provides improved visibility for superimposed structures and can suppress streak artifacts after appropriate IR selection, suggesting that DBT with IR rather than FBP should be further evaluated. Furthermore, the exposure dose could possibly be decreased by half with a combination of IR and WD. An understanding of the potential of DBT with IR and WD for exposure dose selection may improve the diagnostic accuracy of this technique in clinical applications.

http://abstract.rsna.org/uploads/2014/14003401/14003401_qp7d.pdf

Gomi, T, Fujita, K, Umeda, T, Okawa, A, Takeda, T, Potential Exposure Dose Reductions in Digital Breast Tomosynthesis: An Image Processing and Image Reconstruction Technique-based Approach.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14003401.html