{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T00:31:00Z","timestamp":1782174660409,"version":"3.54.5"},"reference-count":33,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T00:00:00Z","timestamp":1774569600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T00:00:00Z","timestamp":1774569600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["NMR in Biomedicine"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Respiratory motion poses a major challenge in abdominopelvic MRI and often leads to strong artifacts. Self\u2010navigation techniques have been proposed for motion correction, allowing free\u2010breathing examination. However, self\u2010navigation methods typically fail to track respiratory motion for dynamic contrast\u2010enhanced (DCE) scans due to concurrent signal changes caused by the contrast injection. In this study, we investigated the use of a pilot\u2010tone (PT) transmitter integrated into the receive coil as an alternative approach for obtaining respiratory curves. The amplitude of the received PT signal gets modulated by respiratory motion due to changes in the coil load. A pipeline for extracting respiratory curves from the PT signal was developed and applied for motion\u2010corrected free\u2010breathing abdominal DCE\u2010MRI. Validation experiments included real\u2010time cine imaging and comparison with self\u2010navigation for five late\u2010phase liver scans. Dynamic experiments were performed for a liver DCE scan of one healthy volunteer and kidney DCE scans of 24 patients. A motion\u2010weighted GRASP algorithm was used for reconstructing dynamic images. Quantitative metrics, including gradient entropy for individual images and the L2 norm of the temporal differences for each dynamic frame set, were calculated. Motion\u2010weighted DCE GRASP reconstructions using PT\u2010derived respiratory curves showed improved image sharpness, especially in regions such as the diaphragm, kidney boundaries, and vessels, as well as better temporal consistency compared to conventional GRASP reconstructions. These improvements were observed both qualitatively and quantitatively. This work demonstrates that the PT technique can accurately detect respiration during contrast injections, reducing motion blurring in free\u2010breathing dynamic DCE\u2010MRI. The proposed technique can be easily implemented in the clinical workflow by using a coil with an integrated PT transmitter and requires no external belts or sensors.<\/jats:p>","DOI":"10.1002\/nbm.70278","type":"journal-article","created":{"date-parts":[[2026,3,28]],"date-time":"2026-03-28T02:12:02Z","timestamp":1774663922000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Correction of Respiratory Motion in Free\u2010Breathing DCE\u2010MRI Using a Pilot\u2010Tone Coil"],"prefix":"10.1002","volume":"39","author":[{"given":"Ruoxun","family":"Zi","sequence":"first","affiliation":[{"name":"Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology New York University Grossman School of Medicine  New York New York USA"},{"name":"Center for Advanced Imaging Innovation and Research (CAI<sup>2<\/sup>R), Department of Radiology New York University Grossman School of Medicine  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario","family":"Bacher","sequence":"additional","affiliation":[{"name":"Siemens Healthcare AG  Forchheim Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter","family":"Speier","sequence":"additional","affiliation":[{"name":"Siemens Healthcare AG  Forchheim Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hersh","family":"Chandarana","sequence":"additional","affiliation":[{"name":"Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology New York University Grossman School of Medicine  New York New York USA"},{"name":"Center for Advanced Imaging Innovation and Research (CAI<sup>2<\/sup>R), Department of Radiology New York University Grossman School of Medicine  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-6866-9448","authenticated-orcid":false,"given":"Riccardo","family":"Lattanzi","sequence":"additional","affiliation":[{"name":"Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology New York University Grossman School of Medicine  New York New York USA"},{"name":"Center for Advanced Imaging Innovation and Research (CAI<sup>2<\/sup>R), Department of Radiology New York University Grossman School of Medicine  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai\u00a0Tobias","family":"Block","sequence":"additional","affiliation":[{"name":"Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology New York University Grossman School of Medicine  New York New York USA"},{"name":"Center for Advanced Imaging Innovation and Research (CAI<sup>2<\/sup>R), Department of Radiology New York University Grossman School of Medicine  New York New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,27]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.595782"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.24850"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/00004728-198611000-00046"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.1880070628"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.2214\/ajr.143.6.1175"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.10664"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.25665"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.26714"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.27998"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.22136"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejmp.2014.04.005"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.10176"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.eururo.2013.05.045"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.21740"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.1097\/RLI.0000000000000179"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.27002"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.28187"},{"key":"e_1_2_12_19_1","first-page":"S97","article-title":"PT\u2010Nav: A Novel Respiratory Navigation Method for Continuous Acquisitions Based on Modulation of a Pilot Tone in the MR\u2010Receiver","volume":"28","author":"Speier P.","year":"2015","journal-title":"Magnetic Resonance Materials in Physics, Biology and Medicine"},{"key":"e_1_2_12_20_1","doi-asserted-by":"publisher","DOI":"10.1097\/RLI.0000000000000619"},{"key":"e_1_2_12_21_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.28580"},{"key":"e_1_2_12_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.28616"},{"key":"e_1_2_12_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.29023"},{"key":"e_1_2_12_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10554-023-02966-z"},{"key":"e_1_2_12_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.21987"},{"issue":"2","key":"e_1_2_12_26_1","first-page":"87","article-title":"Towards Routine Clinical Use of Radial Stack\u2010of\u2010Stars 3D Gradient\u2010Echo Sequences for Reducing Motion Sensitivity","volume":"18","author":"Block K. T.","year":"2014","journal-title":"Investigative Magnetic Resonance Imaging"},{"key":"e_1_2_12_27_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.27200"},{"key":"e_1_2_12_28_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.24551"},{"key":"e_1_2_12_29_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.29576"},{"key":"e_1_2_12_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.23023"},{"key":"e_1_2_12_31_1","unstructured":"R.Grimm C.Forman J.Hutter B.Kiefer I.Hornegger andT.Block \u201cFast Automatic Coil Selection for Radial Stack\u2010of\u2010Stars GRE Imaging \u201d Annual Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM) (2013). Abstract Number 3459."},{"key":"e_1_2_12_32_1","unstructured":"L.Feng H.Chandarana D.Sodickson andR.Otazo \u201cUnstreaking: Radial MRI With Automatic Streaking Artifact Reduction \u201d Annual Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM) (2017). 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