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http://dx.doi.org/10.14400/JDC.2014.12.10.345

The Study of Effectiveness of 3 Spot DR for the Whole Spine Radiography with Comparison of Phantom Distortions  

Kim, Sang-Hyun (Dept. of Radiology, Seoul National University Hospital)
Lee, Mi-Hwa (Dept. of Health Care, Hanseo University)
Publication Information
Journal of Digital Convergence / v.12, no.10, 2014 , pp. 345-351 More about this Journal
Abstract
The purpose of this study is to offer more accurate information in whole spine examination of 3 spot DR through the comparative study about image distortion as making the flat phantom and measuring horizontal, vertical ratio and cobb angle of the virtual. We produced $H(40cm){\times}V(116cm){\times}D(2.3cm)$ flat acrylic phantom with lattice type of lead plate. We took projection respectively 3 times, total 9 times in each equipments using manufactured phantom as changing OFD to 6, 12, 18 cm. We measured a horizontal and vertical length of lead lattice and calculated the ratio. As appointing arbitrary points in the phantom and we measured cobb angle. The results of horizontal, vertical ratio measured CR type 0.98~1.01, scan DR type 0.96~0.97 and 3 spot DR 0.99~1.01. Cobb angle measured $52.5{\sim}53.3^{\circ}$, $52.1{\sim}54.3^{\circ}$ and $52.8{\sim}53.2^{\circ}$. Finally we can say that 3 spot DR method is an accurate method without any distortion in whole spine radiography.
Keywords
Spine; DR; Phantom; Cobb angle; Distortion;
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Times Cited By KSCI : 2  (Citation Analysis)
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