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MRI fiducial markers

November 10th, 2015

In concurrent NIRS-MRI experiments, you often need to know exactly where the NIRS probes are in the MRI iamges. In this case, a fiducial marker becomes important.

In our 2011 publication titled “A quantitative comparison of NIRS and fMRI across multiple cognitive tasks“, we used some fiducial markers and they work really well. Below you will find a picture (see B, C and E) where the fiducial markers are shown clearly in MRI images.

MRI fiducial markers

MRI fiducial markers

Please be sure to use ring-shaped markers as you will know exactly where the markers are.

Where did we buy the markers? They are from MRIEquip (https://www.mriequip.com/store/pc/viewPrd.asp?idcategory=72&idproduct=270)

(MRIEquip, SKU: BP-103X, Model: BP-1015, 15-mm 233 outer diameter, 3.5 mm thick, 5-mm central axis hole)

And below is a sentense in our paper:

MRI fiducial markers were affixed to the inner side of the measurement patch at the location of each of the 24 channels (i.e., between every emitter–detector pair) to identify the positions of NIRS cannels in the MRI structural images.

Author: Xu Cui Categories: brain, nirs Tags:
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About the author:

Xu Cui is a human brain research scientist in Stanford University. He lives in the Bay Area in the United States. He is also the founder of Stork (smart publication alert app), PaperBox and BizGenius.


He was born in He'nan province, China. He received education in Beijing University(BS), University of Tennessee (Knoxville) (MS), Baylor College of Medicine (PhD) and Stanford University (PostDoc). Read more ...
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