Shams Rashid1, Stanislas Rapacchi1, Kalyanam Shivkumar1,2, Adam Plotnik1, J Paul Finn1,3, Peng Hu1,3. 1. Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, California, USA. 2. UCLA Cardiac Arrhythmia Center, David Geffen School of Medicine, University of California, Los Angeles, California, USA. 3. Biomedical Physics Inter-Departmental Graduate Program, University of California, Los Angeles, California, USA.
Abstract
PURPOSE: To study the effects of cardiac devices on three-dimensional (3D) late gadolinium enhancement (LGE) MRI and to develop a 3D LGE protocol for implantable cardioverter defibrillator (ICD) patients with reduced image artifacts. THEORY AND METHODS: The 3D LGE sequence was modified by implementing a wideband inversion pulse, which reduces hyperintensity artifacts, and by increasing bandwidth of the excitation pulse. The modified wideband 3D LGE sequence was tested in phantoms and evaluated in six volunteers and five patients with ICDs. RESULTS: Phantom and in vivo studies results demonstrated extended signal void and ripple artifacts in 3D LGE that were associated with ICDs. The reason for these artifacts was slab profile distortion and the subsequent aliasing in the slice-encoding direction. The modified wideband 3D LGE provided significantly reduced ripple artifacts than 3D LGE with wideband inversion only. Comparison of 3D and 2D LGE images demonstrated improved spatial resolution of the heart using 3D LGE. CONCLUSION: Increased bandwidth of the inversion and excitation pulses can significantly reduce image artifacts associated with ICDs. Our modified wideband 3D LGE protocol can be readily used for imaging patients with ICDs given appropriate safety guidelines are followed.
PURPOSE: To study the effects of cardiac devices on three-dimensional (3D) late gadolinium enhancement (LGE) MRI and to develop a 3D LGE protocol for implantable cardioverter defibrillator (ICD) patients with reduced image artifacts. THEORY AND METHODS: The 3D LGE sequence was modified by implementing a wideband inversion pulse, which reduces hyperintensity artifacts, and by increasing bandwidth of the excitation pulse. The modified wideband 3D LGE sequence was tested in phantoms and evaluated in six volunteers and five patients with ICDs. RESULTS: Phantom and in vivo studies results demonstrated extended signal void and ripple artifacts in 3D LGE that were associated with ICDs. The reason for these artifacts was slab profile distortion and the subsequent aliasing in the slice-encoding direction. The modified wideband 3D LGE provided significantly reduced ripple artifacts than 3D LGE with wideband inversion only. Comparison of 3D and 2D LGE images demonstrated improved spatial resolution of the heart using 3D LGE. CONCLUSION: Increased bandwidth of the inversion and excitation pulses can significantly reduce image artifacts associated with ICDs. Our modified wideband 3D LGE protocol can be readily used for imaging patients with ICDs given appropriate safety guidelines are followed.
Authors: Véronique L Roger; Alan S Go; Donald M Lloyd-Jones; Emelia J Benjamin; Jarett D Berry; William B Borden; Dawn M Bravata; Shifan Dai; Earl S Ford; Caroline S Fox; Heather J Fullerton; Cathleen Gillespie; Susan M Hailpern; John A Heit; Virginia J Howard; Brett M Kissela; Steven J Kittner; Daniel T Lackland; Judith H Lichtman; Lynda D Lisabeth; Diane M Makuc; Gregory M Marcus; Ariane Marelli; David B Matchar; Claudia S Moy; Dariush Mozaffarian; Michael E Mussolino; Graham Nichol; Nina P Paynter; Elsayed Z Soliman; Paul D Sorlie; Nona Sotoodehnia; Tanya N Turan; Salim S Virani; Nathan D Wong; Daniel Woo; Melanie B Turner Journal: Circulation Date: 2011-12-15 Impact factor: 29.690
Authors: K M Koch; A C Brau; W Chen; G E Gold; B A Hargreaves; M Koff; G C McKinnon; H G Potter; K F King Journal: Magn Reson Med Date: 2011-01 Impact factor: 4.668
Authors: O P Simonetti; R J Kim; D S Fieno; H B Hillenbrand; E Wu; J M Bundy; J P Finn; R M Judd Journal: Radiology Date: 2001-01 Impact factor: 11.105
Authors: Mehmet Akçakaya; Hussein Rayatzadeh; Tamer A Basha; Susie N Hong; Raymond H Chan; Kraig V Kissinger; Thomas H Hauser; Mark E Josephson; Warren J Manning; Reza Nezafat Journal: Radiology Date: 2012-07-19 Impact factor: 11.105
Authors: Steven M Stevens; Roderick Tung; Shams Rashid; Jean Gima; Shelly Cote; Geraldine Pavez; Sarah Khan; Daniel B Ennis; J Paul Finn; Noel Boyle; Kalyanam Shivkumar; Peng Hu Journal: Heart Rhythm Date: 2013-10-16 Impact factor: 6.343
Authors: Amita Singh; Keigo Kawaji; Neha Goyal; Noreen T Nazir; Andrew Beaser; Virginia O'Keefe-Baker; Karima Addetia; Roderick Tung; Peng Hu; Victor Mor-Avi; Amit R Patel Journal: Am J Cardiol Date: 2019-01-31 Impact factor: 2.778
Authors: Joanne D Schuijf; Bharath Ambale-Venkatesh; Yoshimori Kassai; Yoko Kato; Larry Kasuboski; Hideki Ota; Shelton D Caruthers; João Ac Lima Journal: Br J Radiol Date: 2019-08-08 Impact factor: 3.039
Authors: Ananna Zaman; Samantha Zhao; Jordana Kron; Antonio Abbate; Anna Tomdio; W Gregory Hundley; Jennifer H Jordan Journal: Curr Cardiol Rep Date: 2022-08-19 Impact factor: 3.955
Authors: Jayson R Baman; James L Cox; Patrick M McCarthy; Daniel Kim; Ravi B Patel; Rod S Passman; Jane E Wilcox Journal: J Cardiovasc Electrophysiol Date: 2021-07-16 Impact factor: 2.942