| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2010-10-22 |
| タイトル |
|
|
タイトル |
Uniform Vascular Enhancement of Lower-Extremity Artery on CT Angiography Using Test-Injection Monitoring at the Central Level of the Scan Range: A Simulation Flow Phantom Study with Clinical Correlation |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題 |
CT angiography, injection method, peripheral artery |
| 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 |
journal article |
| 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 |
| 著者 |
清水, 紀恵
宇都宮, 大輔
中浦, 猛
粟井, 和夫
尾田, 済太郎
彌永, 由美
船間, 芳憲
平井, 俊範
橋田, 昌弘
山下, 康行
|
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
RATIONALE AND OBJECTIVES: To evaluate the efficacy of variable contrast injection durations and scanning delay determined by test injection analysis of computed tomography angiography (CTA) of peripheral arteries. nMATERIALS AND METHODS: We used a flow phantom that simulates the hemodynamics in a lower extremity artery. We set the flow rate at the pump to 2.0 or 5.0 L/minute. In protocol 1, we adopted a variable contrast injection duration based on the peak enhancement time of the test injection monitoring at the central level of the scan range. In protocol 2, we adopted a fixed contrast injection duration. The scanning delay was determined with a conventional bolus-tracking technique monitoring at the top of the scan range. Mean arterial attenuation and difference between the maximum and minimum attenuation values were calculated. To verify the phantom study results, clinical study, including 16 patients was performed under protocol 1. nRESULTS: The mean attenuation values under protocols 1 and 2 were comparable (563.6 Hounsfield units [HU] and 535.0 HU, respectively) at a pump flow rate of 2.0 L/minute; at 5.0 L/minute, they were 289.4 HU and 328.8 HU. The difference between the maximum and minimum attenuation values was smaller under protocol 1 than protocol 2 (76.8 HU vs. 184.9 HU) at a pump flow of 2.0 L/minute and also smaller under protocol 1 than protocol 2 (79.7 HU vs. 203.8 HU) at 5.0 L/minute. In clinical study, the mean attenuation value was 332.6 +/- 51.9 HU, and the difference between the maximum and minimum attenuation values was 55.1 +/- 24.4 HU. nCONCLUSION: The object-specific injection duration based on test injection at the central level of the scan range provides sufficient and constant vascular enhancement at CTA. |
| bibliographic_information |
en : Academic Radiology
巻 17,
号 9,
p. 1153-1157,
発行年 2010-09
|
| item_16_source_id_7 |
|
|
収録物識別子 |
1076-6332 |
| item_16_source_id_9 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11053376 |
| 権利 |
|
|
権利情報 |
Copyright (C) 2010 AUR Published by Elsevier Inc. |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 日本十進分類法 |
|
|
主題Scheme |
NDC |
|
主題 |
492.43 |
| 出版者 |
|
|
出版者 |
Elsevier |
| 関連 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.acra.2010.04.005 |
Corrected_AR2010Sep_17-9_Shimizu_r.pdf (840.2 kB)
