Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Kazunori Nagahara"'
Publikováno v:
Tomography, Vol 9, Iss 4, Pp 1381-1392 (2023)
We investigated the relationships between radiation dose indices and body size indices in adult body computed tomography (CT). A total of 3200 CT scans of the thoracic, abdominal, abdominopelvic, or thoraco-abdominopelvic regions performed using one
Externí odkaz:
https://doaj.org/article/11694236368f405e853046ebf21bd693
Publikováno v:
Annals of Nuclear Medicine. 36:411-419
For dose management of CT, the ratio of effective dose (ED) to dose length product (DLP) is often used to convert DLP to ED. We evaluated this ratio in the CT component of whole-body PET/CT performed under various imaging conditions to determine a pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0607d6cda9003dfa80539a6193c32455
https://doi.org/10.1007/s12149-022-01720-0
https://doi.org/10.1007/s12149-022-01720-0
Autor:
Kazunori Nagahara, Hiroyasu Itoh, Yusuke Inoue, Koji Jinguji, Makoto Takano, Hirokazu Shimizu, Mizuho Adachi
Publikováno v:
Radiation Protection Dosimetry. 192:69-74
Radiation exposure in computed tomography (CT) is automatically modulated by automatic exposure control (AEC) mainly based on scout images. To simulate the whole-body positron emission tomography/CT, CT images of a phantom were obtained using the pos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b661af6b2a80341f74a20b550c9f901
https://doi.org/10.1093/rpd/ncaa197
https://doi.org/10.1093/rpd/ncaa197
Publikováno v:
Radiation Protection Dosimetry. 188:109-116
We performed phantom experiments to assess radiation dose in computed tomography (CT) venography of the lower extremities. CT images of a whole-body phantom were acquired using different automatic exposure control settings and scan ranges, simulating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f679ccd521362df6bc3eeedc165ef34
https://doi.org/10.1093/rpd/ncz265
https://doi.org/10.1093/rpd/ncz265
Publikováno v:
Journal of Radiological Protection. 42:021525
In whole-body positron emission tomography (PET)/computed tomography (CT), it is important to optimise the CT radiation dose. We have investigated factors affecting the dose-length product (DLP) of the CT component of whole-body PET/CT and derived eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cab39b88598689f07beb6646cb128a4e
https://doi.org/10.1088/1361-6498/ac6a89
https://doi.org/10.1088/1361-6498/ac6a89
Publikováno v:
Journal of Radiological Protection. 42:011521
For radiation dose assessment of computed tomography (CT), effective dose (ED) is often estimated by multiplying the dose-length product (DLP), provided automatically by the CT scanner, by a conversion factor. We investigated such conversion in CT ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::052d3ad6197965bd6c936b843ff13034
https://doi.org/10.1088/1361-6498/ac49d6
https://doi.org/10.1088/1361-6498/ac49d6
Publikováno v:
Annals of Nuclear Medicine. 33:169-176
Radiation exposure in CT is modulated by automatic exposure control (AEC) mainly based on scout images. We evaluated CT radiation dose in whole-body PET/CT in relation to scout imaging direction and arm position, and investigated the behavior of AEC.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffc381cab1db6748dbf7b2c796cc3b36
https://doi.org/10.1007/s12149-018-1318-0
https://doi.org/10.1007/s12149-018-1318-0
Publikováno v:
Annals of nuclear medicine. 33(3)
Radiation exposure in CT is modulated by automatic exposure control (AEC) mainly based on scout images. We evaluated CT radiation dose in whole-body PET/CT in relation to scout imaging direction and arm position, and investigated the behavior of AEC.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ab275c53e4c2e33bf8235c529ed8efcd
https://pubmed.ncbi.nlm.nih.gov/30415458
https://pubmed.ncbi.nlm.nih.gov/30415458
Publikováno v:
Radiation protection dosimetry. 185(1)
We performed phantom experiments to investigate radiation dose in the computed tomography component of oncology positron emission tomography/computed tomography in relation to the scan range. Computed tomography images of an anthropomorphic whole-bod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::594438251604d8b9a5454f1f27d45216
https://pubmed.ncbi.nlm.nih.gov/30508127
https://pubmed.ncbi.nlm.nih.gov/30508127
Autor:
Toshimasa Hara, Yoshihito Tanaka, Hirofumi Hata, Kazunori Nagahara, Yusuke Inoue, Hiroki Miyatake
Publikováno v:
Journal of Nuclear Medicine. 56:695-700
We evaluated the effective dose (ED) of the CT component of whole-body PET/CT using software dedicated to CT dose estimation and from dose–length product (DLP) values to establish practical methods of ED estimation. Methods: Eighty adult patients w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dde2b088a4f0cdbb643ea7ca679ddddf
https://doi.org/10.2967/jnumed.114.153718
https://doi.org/10.2967/jnumed.114.153718