000292291 001__ 292291
000292291 005__ 20250731110944.0
000292291 0247_ $$2doi$$a10.1002/mrm.30242
000292291 0247_ $$2pmid$$apmid:39133639
000292291 0247_ $$2ISSN$$a1522-2594
000292291 0247_ $$2ISSN$$a0740-3194
000292291 037__ $$aDKFZ-2024-01652
000292291 041__ $$aEnglish
000292291 082__ $$a610
000292291 1001_ $$00009-0001-1956-3757$$aLutz, Max$$b0
000292291 245__ $$aB1-MRF: Large dynamic range MRF-based absolute B 1 + mapping in the human body at 7T.
000292291 260__ $$aNew York, NY [u.a.]$$bWiley-Liss$$c2024
000292291 3367_ $$2DRIVER$$aarticle
000292291 3367_ $$2DataCite$$aOutput Types/Journal article
000292291 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1727681089_17246
000292291 3367_ $$2BibTeX$$aARTICLE
000292291 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000292291 3367_ $$00$$2EndNote$$aJournal Article
000292291 500__ $$a#LA:E020#/ 2024 Dec;92(6):2473-2490
000292291 520__ $$aThis study aims to map the transmit magnetic field ( B 1 + $$ {B}_1^{+} $$ ) in the human body at 7T using MR fingerprinting (MRF), with a focus on achieving high accuracy and precision across a large dynamic range, particularly at low flip angles (FAs).A FLASH-based MRF sequence (B1-MRF) with high B 1 + $$ {B}_1^{+} $$ sensitivity was developed. Phantom and in vivo abdominal imaging were performed at 7T, and the results were compared with established reference methods, including a slow but precise preparation-based method (PEX), saturated TurboFLASH (satTFL), actual flip angle imaging (AFI) and Bloch-Siegert shift (BSS).The MRF signal curve was highly sensitive to B 1 + $$ {B}_1^{+} $$ , while T1 sensitivity was comparatively low. The phantom experiment showed good agreement of B 1 + $$ {B}_1^{+} $$ to PEX for a T1 range of 204-1691 ms evaluated at FAs from 0° to 70°. Compared to the references, a dynamic range increase larger than a factor of two was determined experimentally. In vivo liver scans showed a strong correlation between B1-MRF, satTFL, and RPE-AFI in a low body mass index (BMI) subject (18.1 kg/m2). However, in larger BMI subjects (≥25.5 kg/m2), inconsistencies were observed in low B 1 + $$ {B}_1^{+} $$ regions for satTFL and RPE-AFI, while B1-MRF still provided consistent results in these regions.B1-MRF provides accurate and precise B 1 + $$ {B}_1^{+} $$ maps over a wide range of FAs, surpassing the capabilities of existing methods in the FA range < 60°. Its enhanced sensitivity at low FAs is advantageous for various applications requiring precise B 1 + $$ {B}_1^{+} $$ estimates, potentially advancing the frontiers of ultra-high field (UHF) body imaging at 7T and beyond.
000292291 536__ $$0G:(DE-HGF)POF4-315$$a315 - Bildgebung und Radioonkologie (POF4-315)$$cPOF4-315$$fPOF IV$$x0
000292291 588__ $$aDataset connected to CrossRef, PubMed, , Journals: inrepo02.dkfz.de
000292291 650_7 $$2Other$$a                                                                                                              B                            1                            +                                                                     $$ {B}_1^{+} $$                                    mapping
000292291 650_7 $$2Other$$a7 Tesla
000292291 650_7 $$2Other$$aMRF
000292291 650_7 $$2Other$$abody MRI
000292291 650_7 $$2Other$$aultrahigh field MRI
000292291 7001_ $$00000-0003-3618-9610$$aAigner, Christoph Stefan$$b1
000292291 7001_ $$aFlassbeck, Sebastian$$b2
000292291 7001_ $$00000-0001-9453-8992$$aKrueger, Felix$$b3
000292291 7001_ $$aGatefait, Constance G F$$b4
000292291 7001_ $$00000-0002-4355-8368$$aKolbitsch, Christoph$$b5
000292291 7001_ $$00000-0001-8227-3632$$aSilemek, Berk$$b6
000292291 7001_ $$00000-0002-7065-2528$$aSeifert, Frank$$b7
000292291 7001_ $$aSchaeffter, Tobias$$b8
000292291 7001_ $$0P:(DE-He78)19e2d877276b0e5eec11cdfc1789a55e$$aSchmitter, Sebastian$$b9$$eLast author$$udkfz
000292291 773__ $$0PERI:(DE-600)1493786-4$$a10.1002/mrm.30242$$gp. mrm.30242$$n6$$p2473-2490$$tMagnetic resonance in medicine$$v92$$x1522-2594$$y2024
000292291 8564_ $$uhttps://inrepo02.dkfz.de/record/292291/files/Magnetic%20Resonance%20in%20Med%20-%202024%20-%20Lutz%20-%20B1%E2%80%90MRF%20Large%20dynamic%20range%20MRF%E2%80%90based%20absolute%20B1%20mapping%20in%20the%20human%20body%20at.pdf
000292291 8564_ $$uhttps://inrepo02.dkfz.de/record/292291/files/Magnetic%20Resonance%20in%20Med%20-%202024%20-%20Lutz%20-%20B1%E2%80%90MRF%20Large%20dynamic%20range%20MRF%E2%80%90based%20absolute%20B1%20mapping%20in%20the%20human%20body%20at.pdf?subformat=pdfa$$xpdfa
000292291 909CO $$ooai:inrepo02.dkfz.de:292291$$pVDB
000292291 9101_ $$0I:(DE-588b)2036810-0$$6P:(DE-He78)19e2d877276b0e5eec11cdfc1789a55e$$aDeutsches Krebsforschungszentrum$$b9$$kDKFZ
000292291 9131_ $$0G:(DE-HGF)POF4-315$$1G:(DE-HGF)POF4-310$$2G:(DE-HGF)POF4-300$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bGesundheit$$lKrebsforschung$$vBildgebung und Radioonkologie$$x0
000292291 9141_ $$y2024
000292291 915__ $$0StatID:(DE-HGF)0420$$2StatID$$aNationallizenz$$d2023-10-21$$wger
000292291 915__ $$0StatID:(DE-HGF)3001$$2StatID$$aDEAL Wiley$$d2023-10-21$$wger
000292291 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bMAGN RESON MED : 2022$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bClarivate Analytics Master Journal List$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)1050$$2StatID$$aDBCoverage$$bBIOSIS Previews$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)0113$$2StatID$$aWoS$$bScience Citation Index Expanded$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)1030$$2StatID$$aDBCoverage$$bCurrent Contents - Life Sciences$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)1190$$2StatID$$aDBCoverage$$bBiological Abstracts$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)0160$$2StatID$$aDBCoverage$$bEssential Science Indicators$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)1110$$2StatID$$aDBCoverage$$bCurrent Contents - Clinical Medicine$$d2023-10-21
000292291 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5$$d2023-10-21
000292291 9202_ $$0I:(DE-He78)E020-20160331$$kE020$$lE020 Med. Physik in der Radiologie$$x0
000292291 9201_ $$0I:(DE-He78)E020-20160331$$kE020$$lE020 Med. Physik in der Radiologie$$x0
000292291 980__ $$ajournal
000292291 980__ $$aVDB
000292291 980__ $$aI:(DE-He78)E020-20160331
000292291 980__ $$aUNRESTRICTED