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Evaluation of sodium T1 relaxation times in human heart

✍ Scribed by Thomas Pabst; Joern Sandstede; Meinrad Beer; Werner Kenn; Stefan Neubauer; Dietbert Hahn

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
135 KB
Volume
17
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

Purpose

To evaluate the sodium longitudinal relaxation (T~1~) characteristics for myocardium and blood in humans.

Materials and Methods

Eleven healthy volunteers were examined by using a ^23^Na heart surface coil at a 1.5 T clinical scanner equipped with a broadband spectroscopy option. ^23^Na MR measurements were performed by using a three‐dimensional spoiled gradient echo sequence (in‐plane resolution, 3.5 mm × 7 mm; slice thickness, 24 mm; TE, 3.1 msec; bandwidth, 65 Hz/pixel; TR, 21 to 150 msec).

Results

Longitudinal T~1~ relaxation time components were 31.6±7.0 msec and 31.1±7.5 msec for myocardium and blood, respectively.

Conclusion

^23^Na T~1~ relaxation times of myocardium and blood can be determined in humans. The results are in agreement with values obtained from animal studies. J. Magn. Reson. Imaging 2003;17:726–729. © 2003 Wiley‐Liss, Inc.

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