Multidetector SPECT scanner for brain and body: system performance and applications.
A multidetector whole-body single photon emission computed tomography (SPECT) scanner has been developed for high-resolution dynamic SPECT imaging. The scanner consists of three detector rings with 128 NaI crystals (14 x 26 x 30 mm) in each ring, providing three tomographic images at 30 mm intervals. This system uses a rotation of collimator around the patient combined with the detector rotation for fine data sampling. The in-plane spatial resolution is 14.2 mm (full width of half maximum) with high-resolution (HR) collimator, 22.0 mm with high-sensitivity (HS) collimator, and 10.6 mm with high-resolution brain (HRB) collimator. The axial resolution is 24.0, 34.0, and 23.5 mm with HR, HS, and HRB collimator, respectively. The sensitivity measured with a 20% energy window for 99mTc in a 20 cm diameter phantom is 5.7, 17.0 and 6.6 kcps/muCi/ml with HR, HS, and HRB collimator, respectively. This scanner allows dynamic SPECT imaging both for brain and body organs with good spatial resolution.
Yonekura
Y
Y
Department of Nuclear Medicine, Kyoto University Faculty of Medicine, Japan.
Fujita
T
T
Nishizawa
S
S
Mukai
T
T
Koide
H
H
Yamamoto
K
K
Tamaki
N
N
Konishi
J
J
Hirose
Y
Y
D001921:Brain / Q000000981:diagnostic imaging*; D004867:Equipment Design; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008961:Models, Structural; D013667:Technetium; D014055:Tomography, Emission-Computed / Q000295:instrumentation* / Q000592:standards
D013667:Technetium