Details

Autor(en) / Beteiligte

• Yamashita, Yoshiki
• Kimura, Masashi
• Kitahara, Masaru
• Hamaguchi, Takumi
• Kanno, Ikuo
• Ohtaka, Masahiko
• Hashimoto, Makoto
• Ara, Kuniaki
• Onabe, Hideaki

Titel

Measurement of effective atomic numbers using energy-resolved computed tomography

Ist Teil von

• Journal of nuclear science and technology, 2014-10, Vol.51 (10), p.1256-1263

Ort / Verlag

Taylor & Francis

Erscheinungsjahr

2014

Quelle

Taylor & Francis 数据库

Beschreibungen/Notizen

• For ion radiation therapy, the measurement of effective atomic numbers, Z eff , is necessary to know the material distribution in a human body; the range of ions entering the human body is influenced by the material distribution along their paths. Z eff , however, cannot be measured at hospitals because monochromatic X-rays with different energies are necessary and are used only at synchrotron facilities. To make Z eff measurements at hand, we propose energy-resolved computed tomography (CT) using a "transXend detector". By assigning two narrow energy ranges in the unfolding process of the data obtained by the transXend detector, Z eff for acrylic and aluminum can be estimated by energy-resolved CT. The estimated Z eff are compared with those obtained by dual-energy and monochromatic X-ray CT.