Dose Measurements using Phantoms for Tube Voltage, Tube Current, Slice Thickness in MDCT / 의학물리
Korean Journal of Medical Physics
;
: 139-143, 2007.
Artigo
em Coreano
| WPRIM
| ID: wpr-226291
ABSTRACT
The purpose of this study was to measure and evaluate radiation dose for MDCT parameters. Patient dose for various combination of MDCT parameters were experimentally measured, using MDCT (GE light speed plus 4 slice, USA), model 2026C electrometer (RADICAL 2026C, USA), standard Polymethylmethacrylate (PMMA) head and body CT dosimetry phantoms. In clinical situations, for a typical abdominal scan performed with MDCT at 120 kVp, 180 mAs, 20 mm collimation, and a pitch of 0.75, CTDIw, CTDIvol were measured as 20.2 mGy, 26.9 mGy, respectively. When scan length is assumed as 271.3 mm, DLP and measured effective dose of the abdominal would be calculated as 729.1 mGy cm, 10.9 mSv, respectively.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Polimetil Metacrilato
/
Cabeça
Limite:
Humanos
Idioma:
Coreano
Revista:
Korean Journal of Medical Physics
Ano de publicação:
2007
Tipo de documento:
Artigo
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