@article{oai:repo.qst.go.jp:00043383,
 author = {Hirasawa, Masahiko and Tomitani, Takehiro and 平澤 雅彦 and 富谷 武浩},
 journal = {Physics in Medicine and Biology},
 month = {May},
 note = {In Compton cameras, the measured scattering angle is associated with an
uncertainty which becomes larger as the incident gamma-ray energy decreases.
Since this uncertainty degrades the spatial resolution of reconstructed images,
Hirasawa and Tomitani (2003 Phys. Med. Biol. 48 1009-26) previously
revised their analytical reconstruction algorithm to compensate for it. As
the new algorithm improved the spatial resolution in effect, they expected
the enhancement of the statistical noise. In this paper, the effect of this
compensation has been analysed in view of spatial resolution (the FWHM
of the noise-free reconstructed image for a point source distribution), statistical
noise (the relative standard deviation of reconstructed images for an isotropic
source distribution) and image quality (the roughness of reconstructed images
for a phantom). The results describe not only the effect of the compensation,
but also the relation between the statistical noise and three parameters, i.e., the
incident gamma-ray energy, the spatial resolution and the measured total event
numbers, in reconstruction with compensation. This relation should be taken
into account for the design of Compton cameras with good quality image, i.e.,
useful image, output.},
 pages = {2083--2093},
 title = {Effect of compensation for scattering angular uncertainty in analytical Compton camera reconstruction},
 volume = {49},
 year = {2004}
}