PURPOSE: To apply magnetization transfer (MT) at 3.0 T in three-dimensional time-of-flight magnetic resonance angiography of the intracranial arteries. MATERIALS AND METHODS: This study was performed on phantoms and seven volunteers to determine the effects of MT at 3.0 T. By using a modulated MT approach and an altered phase encode order, the specific absorption rate (SAR) was kept below 3 W/kg over any 8-second time period. RESULTS: For a 20-degree flip angle and 36 msec repetition time, the background suppression at 3.0 T was improved with MT by 52 +/- 5% for white matter and 40 +/- 8% for grey matter, making the distal intracranial vasculature significantly more discernible. CONCLUSIONS: MT at 3.0 T can significantly improve background suppression in 3D time-of-flight magnetic resonance angiography (MRA) of the intracranial arteries without exceeding SAR guidelines. Copyright 2002 Wiley-Liss, Inc.
PURPOSE: To apply magnetization transfer (MT) at 3.0 T in three-dimensional time-of-flight magnetic resonance angiography of the intracranial arteries. MATERIALS AND METHODS: This study was performed on phantoms and seven volunteers to determine the effects of MT at 3.0 T. By using a modulated MT approach and an altered phase encode order, the specific absorption rate (SAR) was kept below 3 W/kg over any 8-second time period. RESULTS: For a 20-degree flip angle and 36 msec repetition time, the background suppression at 3.0 T was improved with MT by 52 +/- 5% for white matter and 40 +/- 8% for grey matter, making the distal intracranial vasculature significantly more discernible. CONCLUSIONS: MT at 3.0 T can significantly improve background suppression in 3D time-of-flight magnetic resonance angiography (MRA) of the intracranial arteries without exceeding SAR guidelines. Copyright 2002 Wiley-Liss, Inc.
Authors: W Schwindt; H Kugel; R Bachmann; S Kloska; T Allkemper; D Maintz; B Pfleiderer; B Tombach; W Heindel Journal: Eur Radiol Date: 2003-07-05 Impact factor: 5.315
Authors: N Morakkabati-Spitz; J Gieseke; C Kuhl; G Lutterbey; M von Falkenhausen; F Traeber; O Zivanovic; H H Schild Journal: Eur Radiol Date: 2004-12-31 Impact factor: 5.315
Authors: Nuschin Morakkabati-Spitz; Jürgen Gieseke; Christiane Kuhl; Götz Lutterbey; Marcus von Falkenhausen; Frank Träber; Tjoung-Won Park-Simon; Oliver Zivanovic; Hans H Schild Journal: Eur Radiol Date: 2005-10-14 Impact factor: 5.315
Authors: Paula Trujillo; Paul E Summers; Alex K Smith; Seth A Smith; Luca T Mainardi; Sergio Cerutti; Daniel O Claassen; Antonella Costa Journal: Neuroradiology Date: 2017-10-06 Impact factor: 2.804