Advertisement
Browse Subject Areas
?

Click through the PLOS taxonomy to find articles in your field.

For more information about PLOS Subject Areas, click here.

  • Loading metrics

Open Access

Correction

Correction: Ultrashort-T2* mapping at 7 tesla using an optimized pointwise encoding time reduction with radial acquisition (PETRA) sequence at standard and extended echo times

  • Carly A. Lockard,
  • Bruce M. Damon,
  • Hacene Serrai

In the Ultrashort-T2* mapping subsection of Materials and methods. There is an error in the second sentence of the first paragraph. The correct sentence is: The MnCl2 phantom contained ten 5 mL centrifuge tubes having 0.03–30.50 mM MnCl2 tetrahydrate, based on target ultrashort-T2* values estimated using reported relaxivity relationships at 3T, and 30 mM NaCl in deionized water.

In Table 2, the column Phantom MnCl2 solution concentration [mM] is incorrect. Please see the correct Table 2 here.

In Fig 3A the values are incorrect. Please see the correct Fig 3 here.

In S2 and S3 Tables, the column Phantom MnCl2 solution concentration [mM] are incorrect. Please see the correct S2 and S3 Table here:

thumbnail
Download:
Table 2. Calculated ultrashort-T2* values, between-scan absolute and percent change, and ultrashort-T2* fit R2 from two scans for the MnCl2 phantom. The median and interquartile range values are calculated for the sample of all voxels within each ROI.

https://doi.org/10.1371/journal.pone.0346005.t002

thumbnail
Download:
Fig 3. MnCl2 phantom plots.

Plots showing examples of median measured (round markers) and fitted signal (dashed line) based on estimated ultrashort-T2* signal versus TE for three MnCl2 phantom solutions from two (top and bottom plots for each region) scans (a), the relationship between mean 1/T2* and MnCl2 concentration, averaged over two scans (b), the relationship between mean signal and collagen concentration at TE = 0.07 msec, averaged over three scans (c). Error bars represent the interquartile range within each subregion for signal versus TE plots and the standard deviation between scans for the 1/T2* and signal versus concentration plots.

https://doi.org/10.1371/journal.pone.0346005.g003

Supporting information

S2 Table. Results based on monoexponential fitting with a noise term for ultrashort-T2* values, between-scan absolute and percent change, and ultrashort-T2* fit R2 from two scans for the MnCl2 phantom.

https://doi.org/10.1371/journal.pone.0346005.s001

(DOCX)

S3 Table. Results based on log-linear least squares fitting for ultrashort-T2* values, between-scan absolute and percent change, and ultrashort-T2* fit R2 from two scans for the MnCl2 phantom.

https://doi.org/10.1371/journal.pone.0346005.s002

(DOCX)

Reference

  1. 1. Lockard CA, Damon BM, Serrai H. Ultrashort-T2* mapping at 7 tesla using an optimized pointwise encoding time reduction with radial acquisition (PETRA) sequence at standard and extended echo times. PLoS One. 2025;20(4):e0310590. pmid:40245029

Citation: Lockard CA, Damon BM, Serrai H (2026) Correction: Ultrashort-T2* mapping at 7 tesla using an optimized pointwise encoding time reduction with radial acquisition (PETRA) sequence at standard and extended echo times. PLoS One 21(3): e0346005. https://doi.org/10.1371/journal.pone.0346005

Published: March 27, 2026

Copyright: © 2026 Lockard et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.