Change search
ReferencesLink to record
Permanent link

Direct link
Evaluation of Photon-Counting Spectral Breast Tomosynthesis
KTH, School of Engineering Sciences (SCI), Physics, Medical Imaging.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The superposition of anatomical structures often greatly impedes detectability in conventional mammography. Spectral imaging and tomosynthesis are two promising methods used for suppression of the anatomical background. The aim of this thesis is to compare and evaluate the benefits of tomosynthesis and spectral imaging, both in combination and separately. A computer model for signal and noise transfer in tomosynthesis was developed and combined with an existing model for spectral imaging. Measurements were performed to validate the models. An ideal-observer detectability index incorporating anatomical noise was used as a figure of merit to compare the different modalities. For detection of a contrast-enhanced tumor in a breast with high anatomical background, the optimum performance for spectral tomosynthesis was found at a tomo-angle of 10 degrees. The improvement was in the order of a factor 10 compared to non-energy-resolved tomosynthesis with the same angular extent. This was supported by clinical results.

Place, publisher, year, edition, pages
2011. , 29 p.
Series
Trita-FYS, ISSN 0280-316X
Identifiers
URN: urn:nbn:se:kth:diva-32051OAI: oai:DiVA.org:kth-32051DiVA: diva2:408221
Educational program
Master of Science in Engineering -Engineering Physics
Uppsok
Physics, Chemistry, Mathematics
Examiners
Available from: 2011-04-04 Created: 2011-04-04 Last updated: 2011-11-09

Open Access in DiVA

fulltext(4330 kB)668 downloads
File information
File name FULLTEXT01.pdfFile size 4330 kBChecksum SHA-512
de975a695d9e115ea93907d821167c30a1b99d4524d930d90ee0943e4f91f7fdff23d16ab4212cee6865fe90f38dcdce6c9bd942e0c80c3e6031807c5a2b5c21
Type fulltextMimetype application/pdf

By organisation
Medical Imaging

Search outside of DiVA

GoogleGoogle Scholar
Total: 668 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 179 hits
ReferencesLink to record
Permanent link

Direct link