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Göteborgs universitets publikationer

Optimization of image quality in breast tomosynthesis using lumpectomy and mastectomy specimens

Författare och institution:
P. Timberg (-); M. Ruschin (-); Magnus Båth (Institutionen för kliniska vetenskaper, sektionen för onkologi, radiofysik, radiologi och urologi, Avdelningen för radiofysik); B. Hemdal (-); I. Andersson (-); T. Svahn (-); S. Mattsson (-); A. Tingberg (-)
Publicerad i:
Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 6510 s. 651032
ISSN:
1605-7422
Publikationstyp:
Artikel, övrig vetenskaplig
Publiceringsår:
2007
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
The purpose of this study was to determine how image quality in breast tomosynthesis (BT) is affected when acquisition modes are varied, using human breast specimens containing malignant tumors and/or microcalcifications. Images of thirty-one breast lumpectomy and mastectomy specimens were acquired on a BT prototype based on a Mammomat Novation (Siemens) full-field digital mammography system. BT image acquisitions of the same specimens were performed varying the number of projections, angular range, and detector signal collection mode (binned and non-binned in the scan direction). An enhanced filtered back projection reconstruction method was applied with constant settings of spectral and slice thickness filters. The quality of these images was evaluated via relative visual grading analysis (VGA) human observer performance experiments using image quality criteria. Results from the relative VGA study indicate that image quality increases with number of projections and angular range. A binned detector collecting mode results in less noise, but reduced resolution of structures. Human breast specimens seem to be suitable for comparing image sets in BT with image quality criteria.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
MEDICIN OCH HÄLSOVETENSKAP ->
Klinisk medicin ->
Radiologi och bildbehandling ->
Radiologi
MEDICIN OCH HÄLSOVETENSKAP ->
Klinisk medicin ->
Radiologi och bildbehandling ->
Radiofysik
Postens nummer:
235500
Posten skapad:
2016-04-28 17:49

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