Doppler ultrasound cardiac gating of intracranial flow at 7T
نویسندگان
چکیده
منابع مشابه
Cardiac MRI at 7T
In the brain, results have been shown at 7T that are not achievable at lower field strengths. Cardiac imaging at 7T offers similar headline benefits to those images of the brain. More field strength gives more SNR, added to which more field strength increases the T1 and hence increases the effect of contrast agents. This simple idea is appealing in a grant application, but in reality 7T has som...
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Giant intracranial aneurysms are rare vascular pathologies associated with high morbidity and mortality. The purpose of this in vivo study was to assess giant intracranial aneurysms and their wall microstructure by 7T MR imaging, previously only visualized in histopathologic examinations. Seven giant intracranial aneurysms were evaluated, and 2 aneurysms were available for histopathologic exami...
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Background Intracranial aneurysms are life threatening conditions and occur in 3-6% of the population. The annual rupture rate is approximately 2% associated with significant morbidity and mortality. Hemodynamic information obtained by 4D flow MRI may contribute to the assessment of rupture risk of intracranial aneurysms. However, the small sizes of intracranial aneurysms require high spatial r...
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We present the examination technique and normal values of flow velocity from intracranial basal cerebral arteries for a recently developed pulsed Doppler system operating at 2 MHz emitting frequency. Peak systolic, peak diastolic, and mean flow velocity values are analyzed from fast-Fourier transformed (FFT) Doppler spectra at selected depths for 50 presumed normal subjects ranging in age from ...
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BACKGROUND Fetal cardiovascular magnetic resonance (CMR) imaging may provide a valuable adjunct to fetal echocardiography in the evaluation of congenital cardiovascular pathologies. However, dynamic fetal CMR is difficult due to the lack of direct in-utero cardiac gating. The aim of this study was to investigate the effectiveness of a newly developed Doppler ultrasound (DUS) device in humans fo...
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ژورنال
عنوان ژورنال: BMC Medical Imaging
سال: 2020
ISSN: 1471-2342
DOI: 10.1186/s12880-020-00523-x