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A quality assurance protocol for diffusion tensor imaging using the head phantom from American College of Radiology
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10.1118/1.3595111
/content/aapm/journal/medphys/38/7/10.1118/1.3595111
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/38/7/10.1118/1.3595111

Figures

Image of FIG. 1.
FIG. 1.

SNR was quantified from circular ROIs at slice 7. (A) The b = 0 image was used for signal measurement. (B) The noise image was generated from 30 high-b-value DW images as described in the text.

Image of FIG. 2.
FIG. 2.

Locations of 21 grid points where the relative shift in EPI and SE images was measured at slice 5. (A) T1 weighted SE image. (B) DTI b = 0 image.

Image of FIG. 3.
FIG. 3.

Evaluation of distortion by diffusion-encoding gradient at 3 T. (A) The segments indicate the locations where the gridline profile was compared between the B0 and average of high-b-value images. (B) The grid profile for a segment in (A). The solid line was the gridline profile on b = 0 image, the dashed line was the profile of the averaged high-b images, and dotted line was fit by Eq. ((1)). The intensity of the high-b-value profile was multiplied by 7.5.

Tables

Generic image for table
TABLE I.

Image acquisition parameters at 1.5 and 3.0 T. The survey scan and SENSE reference scan were performed first but not included in the table.

Generic image for table
TABLE II.

Measurement results in two MRI scanners. Values are average of five repetitions.

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/content/aapm/journal/medphys/38/7/10.1118/1.3595111
2011-06-30
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A quality assurance protocol for diffusion tensor imaging using the head phantom from American College of Radiology
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/38/7/10.1118/1.3595111
10.1118/1.3595111
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