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学科主题: 临床医学
题名:
Direct MR Arthrography of the Shoulder at 3 Tesla: Optimization of Gadolinium Concentration
作者: Shang, Yao; Zheng, Zhuo-zhao; Li, Xuan
关键词: magnetic resonance imaging ; shoulder ; arthrography ; gadopentetate dimeglumine
刊名: JOURNAL OF MAGNETIC RESONANCE IMAGING
发表日期: 2009-07-01
DOI: 10.1002/jmri.21828
卷: 30, 期:1, 页:229-235
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]: Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]: IODINATED CONTRAST ; FIELD-STRENGTH
英文摘要:

Purpose: To determine the optimal concentration of gadopentetate dimeglumine for direct shoulder MR arthrography at 3T in vivo.

Materials and Methods: Sixty-eight consecutive shoulder MR arthrograms were obtained with 1 mmolGd/L (n = 12) 2 mmolGd/L In = 12), 4 mmolGd/L (n = 12), 6 mmolGd/L In = 12), 9 mmolGd/L (n = 10) and 12 mmolGd/L (n = 10). All postinjection fat-suppressed T1-weighted and T2-weighted images were analyzed retrospectively. For qualitative evaluation, image contrast was graded on a subjective three-level scale (excellent, moderate, and poor). For quantitative analysis, the contrast-to-noise ratio (CNR) of intra-articular fluid to muscle was measured.

Results: All postinjection T1-weighted images and T2-weighted images with I mmolGd/L, 2 mmolGd/L, 4 mmolGd/L, and 6 mmolGd/L were qualitatively evaluated as excellent or moderate. Two of the ten 9-mmolGd/L images and seven of the ten 12-mmolGd/L images were rated as poor with regard to the T2 image contrast. On the T1-weighted images, no significant difference existed between the CNRs of the six concentrations, but a peak CNR was seen at the concentration of 6 mmolGd/L. On the T2-weighted images, CNRs at concentrations of 1 mmolGd/L, 2 mmolGd/L. 4 mmolGd/L, 6 mmolGd/L, and 9 mmolGd/L showed no statistical difference, but were all significantly higher than that with 12 mmolGd/L.

Conclusion: The acceptable concentration of gadopentetate dimeglumine for shoulder MR arthrography at 3T was found to be in the range of I mmolGd/L to 6 mmolGd/L. 6 mmolGd/L may be the optimal concentration.

语种: 英语
WOS记录号: WOS:000267452600030
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/52625
Appears in Collections:北京大学第三临床医学院_放射科_期刊论文

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作者单位: Peking Univ, Hosp 3, Dept Radiol, Beijing 100191, Peoples R China

Recommended Citation:
Shang, Yao,Zheng, Zhuo-zhao,Li, Xuan. Direct MR Arthrography of the Shoulder at 3 Tesla: Optimization of Gadolinium Concentration[J]. JOURNAL OF MAGNETIC RESONANCE IMAGING,2009,30(1):229-235.
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