Conformance of mean glandular dose from phantom and patient data in mammography

Anna Kelaranta, Paula Toroi, Marjut Timonen, Soile Komssi, Mika Kortesniemi

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sammanfattning

In mammography dosimetry, phantoms are often used to represent breast tissue. The conformance of phantom- and patient-based mean glandular dose (MGD) estimates was evaluated mainly from the aspect of diagnostic reference levels. Patient and phantom exposure data were collected for eight diagnostic and three screening mammography devices. More extensive assessments were performed for two devices. The average breast thickness was close to the nationally used reference of 50 mm in diagnostic (50 mm, SD = 13 mm, n = 5342) and screening (47 mm, SD = 13 mm, n = 395) examinations. The average MGD for all breasts differed by 2 % from the MGD determined for breasts in the limited compressed thickness range of 40-60 mm. The difference between phantom- and patient-based MGD estimations was up to 30 %. Therefore, phantom measurements cannot replace patient dose data in MGD determination.
Originalspråkengelska
TidskriftRadiation Protection Dosimetry
Volym164
Utgåva3
Sidor (från-till)342-353
Antal sidor12
ISSN0144-8420
DOI
StatusPublicerad - 11 aug 2014
MoE-publikationstypA1 Tidskriftsartikel-refererad

Vetenskapsgrenar

  • 3126 Kirurgi, anestesiologi, intensivvård, radiologi
  • 114 Fysik

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