Diffusion Measurements in the Ischemic Human Brain with a Steady-State Sequence

Brüning, R.; Wu, Reultua H.; Deimling, M.; Porn, Ute; Haberl, R.; Reiser, M.

doi:10.1097/00004424-199611000-00005

Cited by 11 publications

(4 citation statements)

References 24 publications

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“…In SSFP diŠusion imaging, the signals are aŠected by all previous diŠusion-sensitizing gradients; there-fore, strong diŠusion-weighted images can be obtained with less image distortion. 7 We found the DRCs and the rADCL W rADCF ratios of endometrial cysts and of the fatty portions of dermoid cysts were signiˆcantly lower than those of other cystic tumors. However, the DRCs and the rADCL W rADCF ratios between mucinous cystic tumors and serous cystic tumors were not sig-niˆcantly diŠerent.…”

Section: Discussionmentioning

confidence: 59%

“…11,12 Because signal generation in the diŠusion-weighted SSFP sequence is complex, it is not possible to characterize the strength of the sequence with a simple b-value in diŠusion-weighted spin-echo sequences. 7 Therefore, we compared the eŠect of the diŠusion strength with the two methods explained below.…”

Section: Methodsmentioning

confidence: 99%

“…It has thus been applied in brain and bone marrow diŠusion imaging. [7][8][9] In SSFP diŠusion imaging, the signals are aŠected by all previous diŠusion-sensitizing gradients; therefore strong diŠusion-weighted images can be obtained with less image distortion. 7 The purpose of the present study was to evaluate the usefulness of SSFP diŠusion imaging in assess-Magnetic Resonance in Medical Sciences ing cystic ovarian lesions.…”

Section: Introductionmentioning

confidence: 99%

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Cystic Ovarian Lesions in SSFP Diffusion Imaging

et al. 2002

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Section: Discussionmentioning

confidence: 59%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cystic Ovarian Lesions in SSFP Diffusion Imaging

et al. 2002

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“…Early studies did present DW-SSFP results for both ischemia (62) and diffusion tensor imaging in amnesia (64). These studies preceded work on navigator correction (21,40) and motion artifacts are clearly visible as regions of intense dropout [e.g.…”

Section: In Vivo Dwi Of the Brainmentioning

confidence: 99%

Steady‐state diffusion‐weighted imaging: theory, acquisition and analysis

McNab

Miller

2010

NMR in Biomedicine

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Steady-state diffusion-weighted imaging (DWI) has long been recognized to offer potential benefits over conventional spin-echo methods. This family of pulse sequences is highly efficient and compatible with three-dimensional acquisitions, which could enable high-resolution, low-distortion images. However, the same properties that lead to its efficiency make steady-state imaging highly susceptible to motion and create a complicated signal with dependence on T(1), T(2) and flip angle. Recent developments in gradient hardware, motion-mitigation techniques and signal analysis offer potential solutions to these problems, reviving interest in steady-state DWI. This review offers a description of steady-state DWI signal formation and provides an overview of the current methods for steady-state DWI acquisition and analysis.

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Diffusion‐weighted MRI in transient global amnesia: Elevated signal intensity in the left mesial temporal lobe in 7 of 10 patients

Strupp¹,

Brüning

et al. 1998

Annals of Neurology

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148

120

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Prompted by the findings of previous studies with positron emission tomography and single photon emission computed tomography, which demonstrated hypoperfusion or hyperperfusion in the left temporal lobe in isolated patients with transient global amnesia (TGA), we compared the sensitivity of diffusion-weighted (DW) magnetic resonance imaging (MRI) with that of conventional T1- and T2-weighted MRI in patients with TGA. Ten patients with the typical syndrome of a pure TGA were included in the study. For all patients, a coronal DW sequence, a steady-state free precession (SSFP) sequence, and conventional T1- and T2-weighted turbo spin-echo sequences were obtained. Seven of the 10 patients had elevated signal intensity in the left hippocampal region on DW MRI; moreover, 3 of these 7 patients exhibited bilateral signal abnormality in this sequence. All conventional T1- and T2-weighted images as well as all follow-up studies were normal. The signal elevation in DW MRI correlates with a decrease in the interstitial space and with cellular edema in the temporal lobe during TGA. The underlying pathomechanism causing this cellular edema cannot be clearly outlined using DW MRI. Our data are, however, compatible with spreading depression. This is the first study to show that DW MRI is a sensitive MRI method for evaluating TGA, especially in the early stage of the disease.

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Diffusion Measurements in the Ischemic Human Brain with a Steady-State Sequence

Abstract: The diffusion-weighted SSFP-sequence is more sensitive in acute ischemia and delineates likewise in subacute ischemia, when compared with T2-weighted imaging.

Cited by 11 publications

References 24 publications

Cystic Ovarian Lesions in SSFP Diffusion Imaging

Cystic Ovarian Lesions in SSFP Diffusion Imaging

Steady‐state diffusion‐weighted imaging: theory, acquisition and analysis

Diffusion‐weighted MRI in transient global amnesia: Elevated signal intensity in the left mesial temporal lobe in 7 of 10 patients

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