Microfocus X-ray imaging of the internal geometry of brachytherapy seeds.
Precise and reliable geometrical data on the internal structure of seeds are indispensable for dosimetric calculation in brachytherapy. We used a novel microfocus X-ray imaging technique for observing the internal structure of brachytherapy seeds. Two popular (125)I seed models were evaluated. Obtained high precision images enabled us to observe the internal structure of seeds qualitatively. Geometrical size parameters were evaluated quantitatively with uncertainty of 0.01-0.04 mm (k=2).
School of Allied Health Sciences, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan; Graduate School of Medical Sciences, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan. Electronic address: hasegawa@kitasato-u.ac.jp.
Tomoyuki
T
Hasegawa
Department of Radiology, Keio University, School of Medicine, Shinanomachi 35, Shinjuku-ku, Tokyo 160-8582, Japan.
Takashi
T
Hanada
Department of Radiology, Tokyo Medical Center, National Hospital Organization, Higashigaoka 2-5-1, Meguro-ku, Tokyo 152-8902, Japan.
Atsunori
A
Yorozu
Kanagawa Industrial Technology Center (KITC), Shimoimaizumi 705-1, Ebina-shi, Kanagawa 243-0435, Japan.
Hidetaka
H
Ito
Kanagawa Industrial Technology Center (KITC), Shimoimaizumi 705-1, Ebina-shi, Kanagawa 243-0435, Japan.
Shinji
S
Masuda
School of Allied Health Sciences, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan.
Maki
M
Kawahara
Graduate School of Medical Sciences, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan.
Katsunori
K
Yogo
Graduate School of Medical Sciences, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan; Department of Radiology and Radiation Oncology, Kitasato University School of Medicine, Kitasato 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan.
Kazushige
K
Hayakawa
D001918:Brachytherapy / Q000379:methods*; D003952:Diagnostic Imaging; D006801:Humans; D011879:Radiotherapy Dosage; D014057:Tomography, X-Ray Computed; D014965:X-Rays
Brachytherapy; Internal geometry; Microfocus X-ray imaging; Model 6711; Model STM1251