| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Control of whole-body FDG-positron emission tomography image quality by adjusting the acquisition time: A new physical image quality index and patientdependent parameters for clinical imaging |
|
言語 |
en |
| 作成者 |
TAKAUCHI, Komei
TATSUGAMI, Fuminari
FUNAMA, Yoshinori
USHIO, Ayaka
KIGUCHI, Masao
AWAI, Kazuo
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2022 Hiroshima University Medical Press |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
PET |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
image quality |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
acquisition time |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
noise equivalent count |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
time-of-flight |
| 内容記述 |
|
|
内容記述 |
Objective: This study aimed to establish a methodology for obtaining visually equivalent image quality regardless of patient size by controlling the acquisition time of positron emission tomography (PET) studies. Methods: In Part 1, we determined the physical image quality index with the highest correlation with visual assessment in 30 patients. In Part 2, 100 patients were scanned to identify the patient-dependent parameters that were most correlated with the physical image quality index. These parameters were calculated from the combination of the administered activity of 18F-FDG and weight. We drew an approximate curve from these parameters and prepared a scatter plot of the physical image quality index. In Part 3, we checked whether the image quality was constant by controlling the acquisition time in 189 patients. The approximation formula we obtained under (2) was used to control the acquisition time. The physical image quality index was a constant value, and the patient-dependent parameter was calculated from the patient’s physique. Results: The physical image quality index with the highest correlation with visual evaluation was the noise equivalent count weight (NECweight) (correlation coefficient: 0.90). The patient-dependent index most correlated with NECweight was activity/weight3 (A/W3) (coefficient of determination: 0.978). The verification of the acquisition time to obtain a certain image quality showed an average of 0.60 ± 0.034 Mcounts/m∙kg, and a similar image quality was obtained independent of the individual physiques. Conclusions: Calculating NECweight and A/W3 enable the determination of the appropriate acquisition time for stable image quality before the PET study. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Hiroshima University Medical Press |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.24811/hjms.71.1-2_1 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0018-2052 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2433-7668 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00664312 |
| 開始ページ |
|
|
開始ページ |
1 |
| 書誌情報 |
Hiroshima Journal of Medical Sciences
Hiroshima Journal of Medical Sciences
巻 71,
号 1-2,
p. 1-8,
発行日 2022-06
|
| 旧ID |
52899 |
HiroshimaJMedSci_71_1.pdf (1.4 MB)
