论文信息 - Development of a web-based CT dose calculator: WAZA-ARI.

Development of a web-based CT dose calculator: WAZA-ARI.

A web-based computed tomography (CT) dose calculation system (WAZA-ARI) is being developed based on the modern techniques for the radiation transport simulation and for software implementation. Dose coefficients were calculated in a voxel-type Japanese adult male phantom (JM phantom), using the Particle and Heavy Ion Transport code System. In the Monte Carlo simulation, the phantom was irradiated with a 5-mm-thick, fan-shaped photon beam rotating in a plane normal to the body axis. The dose coefficients were integrated into the system, which runs as Java servlets within Apache Tomcat. Output of WAZA-ARI for GE LightSpeed 16 was compared with the dose values calculated similarly using MIRD and ICRP Adult Male phantoms. There are some differences due to the phantom configuration, demonstrating the significance of the dose calculation with appropriate phantoms. While the dose coefficients are currently available only for limited CT scanner models and scanning options, WAZA-ARI will be a useful tool in clinical practice when development is finalised.

[1] Michiaki Kai,et al. WAZA-ARI: computational dosimetry system for X-ray CT examinations. I. Radiation transport calculation for organ and tissue doses evaluation using JM phantom. , 2011, Radiation protection dosimetry.

[2] 岩崎民子. SOURCES AND EFFECTS OF IONIZING RADIATION : United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR 2000 Report to the General Assembly, with Scientific Annexes , 2002 .

[3] F. Takahashi,et al. Analysis of Organ Doses from Computed Tomography (CT) Examination by the Radiation Transport Calculation to Develop the Dosimetry System, WAZA-ARI , 2011 .

[4] G. Stamm,et al. [CT-expo--a novel program for dose evaluation in CT]. , 2002, RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin.

[5] Jacob Geleijns,et al. Overranging in multisection CT: quantification and relative contribution to dose--comparison of four 16-section CT scanners. , 2007, Radiology.

[6] H. Nagel,et al. CT-Expo - ein neuartiges Programm zur Dosisevaluierung in der CT , 2002 .

[7] Akira Endo,et al. WAZA-ARI: computational dosimetry system for X-ray CT examinations II: development of web-based system. , 2011, Radiation protection dosimetry.