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

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

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Abstrakti

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.
Alkuperäiskielienglanti
LehtiRadiation Protection Dosimetry
Vuosikerta164
Numero3
Sivut342-353
Sivumäärä12
ISSN0144-8420
DOI - pysyväislinkit
TilaJulkaistu - 11 elokuuta 2014
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 3126 Kirurgia, anestesiologia, tehohoito, radiologia
  • 114 Fysiikka
  • Mammography
  • Mean glandular dose
  • Phantom
  • Patient

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