Details

Autor(en) / Beteiligte

• López-Pineda, E.
• Ruiz-Trejo, C.
• Brandan, M.E.

Titel

A mammographic phantom to measure mean glandular dose by thermoluminescent dosimetry

Ist Teil von

• Radiation measurements, 2014-12, Vol.71, p.297-299

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2014

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• We have designed a phantom to evaluate mean glandular dose (MGD) as part of the regulatory dosimetry control for mammographic equipment. The phantom is constituted by TLD-100 thermoluminescent dosemeters (TLDs) inserted within semicircular plates of acrylic. Different groups of TLDs are used to determine entrance surface air kerma and half-value layer (HVL). Calibration of both tasks has been performed using a Senographe 2000D system and an ionization chamber. The phantom has been tested in five clinical systems. The HVL and MGD obtained by this method agree, on average, within 3%, with those from standard procedures based on the use of ionization chambers. The phantom MGD measurements have a combined uncertainty better than 10% (k = 1). •We have designed a phantom to evaluate mean glandular dose (MGD).•We used TLD-100 dosemeters inserted within semicircular plates of acrylic.•The system has been tested in five clinical systems.•MGD obtained by this method agrees within 3% with ionization chambers.•MGD measurements have a combined uncertainty better than 10% (k = 1).