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. Author manuscript; available in PMC: 2012 Jun 27.
Published in final edited form as: Magn Reson Med. 2009 Apr;61(4):761–766. doi: 10.1002/mrm.21923

Figure 1.

Figure 1

Schematic diagram of the SSE ultrashort T2* relaxometry. In time interval A, the signal displays a linear exponential behavior characterized by the T2* relaxation constant. The SSE ultrashort T2* relaxometry is achieved by acquiring a series of spin echo images with the readout echo sequentially shifted to increase T2* weighting. Since there are no hardware limitations on the echo shift, it is possible to achieve steps small enough to measure T2* below 1 ms. Note: time is not to scale.