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Dynamic contrast-enhanced MR imaging of endometrial cancer: optimizing the imaging delay for tumour-myometrium contrast.

Abstract：

PURPOSE:To investigate the optimal imaging delay time of dynamic contrast-enhanced magnetic resonance (MR) imaging in women with endometrial cancer. MATERIALS AND METHODS:This prospective single-institution study was approved by the institutional review board, and informed consent was obtained from the participants. Thirty-five women (mean age, 54 years; age range, 29-66 years) underwent dynamic contrast-enhanced MR imaging with a temporal resolution of 25-40 seconds. The signal intensity difference ratios between the myometrium and endometrial cancer were analyzed to investigate the optimal imaging delay time using single change-point analysis. RESULTS:The optimal imaging delay time for appropriate tumour-myometrium contrast ranged from 31.7 to 268.1 seconds. The median optimal imaging delay time was 91.3 seconds, with an interquartile range of 46.2 to 119.5 seconds. The median signal intensity difference ratios between the myometrium and endometrial cancer were 0.03, with an interquartile range of -0.01 to 0.06, on the pre-contrast MR imaging and 0.20, with an interquartile range of 0.15 to 0.25, on the post-contrast MR imaging. CONCLUSION:An imaging delay of approximately 90 seconds after initiating contrast material injection may be optimal for obtaining appropriate tumour-myometrium contrast in women with endometrial cancer. KEY POINTS:• Recent advances have allowed for MR imaging of high temporal resolution. • Contrast-enhanced MR imaging is helpful for evaluation of endometrial cancer. • An imaging delay of 90 seconds may be optimal.

journal_name

Eur Radiol

journal_title

European radiology

authors

Park SB,Moon MH,Sung CK,Oh S,Lee YH

doi

10.1007/s00330-014-3327-2

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

2795-9

issue

11

eissn

0938-7994

issn

1432-1084

journal_volume

24

pub_type

杂志文章

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