Barium 조영제의 농도 차이가 PET 검사에 미치는 영향

• 영문명: Influence on PET Exam Caused by Density Differences of Barium-sulfate Contrast Media
• 발행기관: 대한핵의학기술학회
• 저자명: 최우준(Woo Joon Choi) 신상기(Sang Ki Shin) 남기표(Ki Pyo Nam) 박순기(Soon Ki Park)
• 간행물 정보: 『핵의학기술』Vol.12 No.1, 27~32쪽, 전체 6쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2008.05.30

영문 초록

Purpose: The evaluation of SUV (Standardized Uptake Values) for quantitative analysis in PET exam is the most significant. In PET exam, we make attenuation correction images by using 68Ge, 137Cs or CT data. At this time, a distorted attenuation map affects quantitative analysis. After the exam using barium-sulfate and high density of barium contrast make attenuation map distorted. And then it brings bed influences on SUV. The aim of this study is to verify the relationship between high density barium-sulfate and SUV in PET exam. Materials and Methods By using ¹⁸F-FDG, we made barium-sulfate powder, density of 0, 1.5, 3, 5, 10 and 15% respectively and acquired PET and PET/CT images per each density. And we examined SUV variations from PET and PET/CT images according to differences of barium’s density. Moreover, we finally calculated SUV causing variations in HU (Hounsfield Units) values to justify whether the differences of barium density bring any changes in PET/CT exam. Results: From PET images acquired from transmission scan with 68Ge, we got SUV figures from 6.46 to 6.8 in barium density between 0 to 15 percent. On the other hand, In PET images acquired from Tx scan that using CT, SUV was 6.77 to 23.73, derived from the same barium density. And CT HU values range from 29 to 2004. Conclusion: PET images from Tx data using 68Ge weren’t affected by barium density and had no differences in SUV. But in the PET/CT images using CT Tx data, there’s considerable variations in HU and SUV values according to a difference of barium density in HU values. To perform a precise examination, barium sulfate should be removed from a human body before performing a PET exam.

목차

서론

대상 및 방법

결과

결론

REFERENCES

키워드

Barium SUV HU PET PET/CT