Byung Sam Kang, Jin Hyun Son, Hoon Hee Park, Kyung Rae Dong
언어
영어(ENG)
URL
https://www.earticle.net/Article/A483015
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초록
영어
PET/CT(Positron Emission Tomography/Computed Tomography) is an examination combining morphological and functional information in one examination. The purpose of this study is to see the lowest CT dose for attenuation correction in the PET/CT maintaining good image quality when considering CT scan dose to the patients. We injected 18F-FDG and water into the cylinder shaped phantom, and obtained emission images for 3 mins and transmission images(140 kVp, 8 sec, 10~200 mA for transmission images), and reconstructed the images to PET/CT images with Iterative method. Data(Maximum, Minimum, Average, Standard Deviation) were obtained by drawing a circular ROI(Region Of Interest) on each sphere in each image set with Image J program. And then described SD according to the CT and PEC/CT images as graphes. Through the graphes, we got the relationships of mA and quality of images. SDs according to CT graph were 16.25 at 10 mA, 7.26 at 50 mA, 5.5 at 100 mA, 4.29 at 150 mA, and 3.83 at 200 mA, i.e. the higer mA, the better image quality was presented. SDs according to PET/CT graph were 1823.2 at 10 mA, 1825.1 at 50 mA, 1828.4 at 100 mA, 1813.8 at 150 mA, and 1811.3 at 200 mA. Calculated SDs at PET/CT images were maintained. This means images quality is maintained having nothing to do with mA of high and low.
목차
Abstract Ⅰ. Introduction Ⅱ. Material & Method 1. Materials 2. Methods Ⅲ. Result 1. The results of CT images 2. The results of PET/CT images Ⅳ. Discussion and Conclusion References
Byung Sam Kang [ Department of Radiological Technology, Shingu University ]
Jin Hyun Son [ Department of Radiological Technology, Shingu University ]
Hoon Hee Park [ Department of Radiological Technology, Shingu University ]
Kyung Rae Dong [ Department of Radiological Technology, Gwangju Health College University/Department of Nuclear Engineering, Chosun University ]
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