By a News Reporter-Staff News Editor at Journal of Technology -- Fresh data on X-Ray Technology are presented in a new report. According to news originating from Boston, Massachusetts, by VerticalNews correspondents, research stated, "Image performance of a cone beam O-arm system with the use of a Varian flat panel detector (PaxScan 4030CB) was evaluated. Modulation Transfer Function (MTF), Noise Power Spectrum (NPS), and tube output characteristics were measured."
Our news journalists obtained a quote from the research from Massachusetts General Hospital, "Image quality measurements were performed with a CATPHAN 424 phantom using a 120 kVp beam filtered with 1 mm Al and 0.1 mm Cu and three preset protocols at different exposure levels. The CPT445 Module was used to measure MTF. Water phantom images were used to calculate NPS. Then the NPS was normalized by dividing the square of the mean signal. The Photon fluence at each exposure (q) was estimated using the SpekCalc. The MTF indicates that the reconstruction filter of the O-arm is overenhancing, meaning that it yields values greater than unity. The system has a 10% MTF at 0.45 mm. The NPS shows the low frequency structured noise."
According to the news editors, the research concluded: "The evaluation of image performance of the O-arm imaging system helps its future improvements and clinical applications."
For more information on this research see: Image performance evaluation of a cone beam O-arm imaging system. Journal of X-Ray Science and Technology, 2013;21(3):373-380. Journal of X-Ray Science and Technology can be contacted at: Ios Press, Nieuwe Hemweg 6B, 1013 Bg Amsterdam, Netherlands.
The news correspondents report that additional information may be obtained from J. Zhang, Massachusetts General Hospital, Dept. of Radiol, Webster Center Adv Res & Educ Radiat, Boston, MA 02114, United States.
Keywords for this news article include: Boston, Massachusetts, United States, X-Ray Technology, North and Central America
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