{"doi":"10.1002/hbm.25359","title":"The variability of MR axon radii estimates in the human white matter","abstract":"The noninvasive quantification of axonal morphology is an exciting avenue for gaining understanding of the function and structure of the central nervous system. Accurate non-invasive mapping of micron-sized axon radii using commonly applied neuroimaging techniques, that is, diffusion-weighted MRI, has been bolstered by recent hardware developments, specifically MR gradient design. Here the whole brain characterization of the effective MR axon radius is presented and the inter- and intra-scanner test-retest repeatability and reproducibility are evaluated to promote the further development of the effective MR axon radius as a neuroimaging biomarker. A coefficient-of-variability of approximately 10% in the voxelwise estimation of the effective MR radius is observed in the test-retest analysis, but it is shown that the performance can be improved fourfold using a customized along-tract analysis.","journal":"Human Brain Mapping","year":2021,"id":155676,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":57,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9484,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2021-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":444972,"name":"Erika P. Raven","orcid":"0000-0002-9567-5259","position":1,"is_corresponding":false},{"id":572484,"name":"Luke Edwards","orcid":"0000-0002-8320-7298","position":2,"is_corresponding":false},{"id":572485,"name":"Nikolaus Weiskopf","orcid":"0000-0001-5239-1881","position":3,"is_corresponding":false},{"id":271622,"name":"Derek K. Jones","orcid":"0000-0003-4409-8049","position":4,"is_corresponding":false},{"id":291215,"name":"Jelle Veraart","orcid":"0000-0003-0781-0420","position":0,"is_corresponding":true}],"reference_count":94,"raw_metadata":null,"created_at":"2026-07-18T23:44:03.750995Z","pmid":"33576105","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}