Erratum to: Rapid simultaneous acquisition of macromolecular tissue volume, susceptibility, and relaxometry maps (Magnetic Resonance in Medicine, (2022), 87, 2, (781-790), 10.1002/mrm.28995)

Fang Frank Yu, Susie Yi Huang, Ashwin Kumar, Thomas Witzel, Congyu Liao, Tanguy Duval, Julien Cohen-Adad, Berkin Bilgic

Research output: Contribution to journalComment/debatepeer-review

Abstract

Dear Editors, In the abstract, the number of subjects should be changed from 3 to 4. The updated abstract sections appear below: Methods Four adults were imaged on a 3T scanner using a multi-echo 3D GRE sequence acquired at three head orientations. MTV, QSM, R2*, T1, and proton density maps were reconstructed. The sequence (GRAPPA R = 4) was also performed in subject #1 with a single head orientation, and subject #4 to assess reproducibility. Fully sampled data was acquired in subject #2, from which retrospective undersampling was performed (R = 6 GRAPPA and R = 9 JVC-GRAPPA). Prospective undersampling was performed in subject #3 (R = 6 GRAPPA and R = 9 JVC-GRAPPA) using gradient blips to shift k-space sampling in later echoes. Results Subject #1 and #4 showed that multi-orientation and single-orientation MTV maps did not differ significantly. For subject #2, the retrospectively undersampled JVC-GRAPPA and GRAPPA generated similar results as fully sampled data. This approach was validated with the prospectively undersampled images (subject #3). Combining QSM, R2*, and MTV, the contributions of myelin and iron to susceptibility was estimated. In the Methods section 2.1 of the manuscript, the number of subjects should likewise be changed from 3 to 4. The update manuscript section appears below: 2.1 | Data acquisition Four healthy adult volunteers were scanned on a 3T scanner (Siemens Skyra) with a 64-channel head coil in accordance with IRB-approved protocol.24 We regret these errors in our manuscript. CONFLICT OF INTEREST The authors do not have any conflicts of interest to report.

Original languageEnglish (US)
Pages (from-to)3022-3023
Number of pages2
JournalMagnetic resonance in medicine
Volume87
Issue number6
DOIs
StatePublished - Jun 2022

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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