使用三种不同管电流强度在F-NaF PET/CT扫描上测量的标准化摄取值的比较。

Comparison of standardized uptake values measured on F-NaF PET/CT scans using three different tube current intensities.

作者信息

Valadares Agnes Araujo, Duarte Paulo Schiavom, Woellner Eduardo Bechtloff, Coura-Filho George Barberio, Sapienza Marcelo Tatit, Buchpiguel Carlos Alberto

机构信息

Nuclear Physicians, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, SP, Brazil.

PhDs, Physicians Assistants, Instituto do Câncer do Estado de São Paulo Octavio Frias de Oliveira (Icesp), São Paulo, SP, Brazil.

出版信息

Radiol Bras. 2015 Jan-Feb;48(1):17-20. doi: 10.1590/0100-3984.2014.0034.

DOI:10.1590/0100-3984.2014.0034

PMID:25798003

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4366024/

Abstract

OBJECTIVE

To analyze standardized uptake values (SUVs) using three different tube current intensities for attenuation correction on (18)FNaF PET/CT scans.

MATERIALS AND METHODS

A total of 254 (18)F-NaF PET/CT studies were analyzed using 10, 20 and 30 mAs. The SUVs were calculated in volumes of interest (VOIs) drawn on three skeletal regions, namely, right proximal humeral diaphysis (RH), right proximal femoral diaphysis (RF), and first lumbar vertebra (LV1) in a total of 712 VOIs. The analyses covered 675 regions classified as normal (236 RH, 232 RF, and 207 LV1).

RESULTS

Mean SUV for each skeletal region was 3.8, 5.4 and 14.4 for RH, RF, and LV1, respectively. As the studies were grouped according to mAs value, the mean SUV values were 3.8, 3.9 and 3.7 for 10, 20 and 30 mAs, respectively, in the RH region; 5.4, 5.5 and 5.4 for 10, 20 and 30 mAs, respectively, in the RF region; 13.8, 14.9 and 14.5 for 10, 20 and 30 mAs, respectively, in the LV1 region.

CONCLUSION

The three tube current values yielded similar results for SUV calculation.

摘要

目的

分析在（18）FNaF PET/CT扫描中使用三种不同管电流强度进行衰减校正时的标准化摄取值（SUV）。

材料与方法

使用10、20和30 mAs对总共254例（18）F-NaF PET/CT研究进行分析。在总共712个感兴趣区（VOI）中，在三个骨骼区域，即右肱骨近端骨干（RH）、右股骨近端骨干（RF）和第一腰椎（LV1）绘制VOI并计算SUV。分析涵盖675个分类为正常的区域（236个RH、232个RF和207个LV1）。

结果

RH、RF和LV1每个骨骼区域的平均SUV分别为3.8、5.4和14.4。当根据mAs值对研究进行分组时，RH区域中10、20和30 mAs的平均SUV值分别为3.8、3.9和3.7；RF区域中10、20和30 mAs的平均SUV值分别为5.4、5.5和5.4；LV1区域中10、20和30 mAs的平均SUV值分别为13.8、14.9和14.5。