Second harmonic imaging: a new ultrasound technique to assess human brain tumour perfusion
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چکیده
منابع مشابه
Second harmonic imaging: a new ultrasound technique to assess human brain tumour perfusion.
BACKGROUND Second harmonic imaging is a new ultrasound technique that allows evaluation of brain tissue perfusion after application of an ultrasound contrast agent. OBJECTIVE To evaluate the potential of this technique for the assessment of abnormal echo contrast characteristics of different brain tumours. METHODS 27 patients with brain tumours were studied. These were divided into four gro...
متن کاملTransient response harmonic imaging: an ultrasound technique related to brain perfusion.
BACKGROUND AND PURPOSE Gray-scale harmonic imaging is the first method to visualize blood perfusion and capillary blood flow with ultrasound after intravenous contrast agent application. The purpose of the present study was to evaluate the potential of transient response second harmonic imaging (TRsHI) to assess normal echo contrast characteristics in different brain areas by transcranial ultra...
متن کاملUltrasound perfusion imaging of the human brain.
BACKGROUND AND PURPOSE Color-coded perfusion maps can be calculated from ultrasound harmonic gray-scale imaging data to analyze brain tissue perfusion. METHODS In 13 healthy volunteers, 2 doses (0.5 and 1.5 mL) of Optison, a perfluoropropane-containing ultrasound contrast agent, were injected intravenously, and they produced a strong increase in echo enhancement in the brain parenchyma. The c...
متن کاملHarmonic imaging of the human brain. Visualization of brain perfusion with ultrasound.
BACKGROUND AND PURPOSE Through harmonic gray-scale imaging, it is possible to analyze brain tissue perfusion with different ultrasound methods. METHODS In 12 healthy volunteers, 2 doses (0.5 and 1.5 mL) of Optison, a perfluoropropane-containing contrast agent, were injected intravenously and produced a strong increase of brightness in the brain parenchyma. We used harmonic imaging for quantif...
متن کاملComparison of transcranial brain tissue perfusion images between ultraharmonic, second harmonic, and power harmonic imaging.
BACKGROUND AND PURPOSE To clarify optimal brain tissue perfusion images visualized by transcranial ultrasound harmonic imaging, we compared gray-scale integrated backscatter (IBS) images of new ultraharmonic imaging (UHI) and conventional second harmonic imaging (SHI) with power harmonic imaging (PHI) (harmonic B-mode with harmonic power Doppler images) in 10 patients with and 4 without a tempo...
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ژورنال
عنوان ژورنال: Journal of Neurology, Neurosurgery & Psychiatry
سال: 2003
ISSN: 0022-3050
DOI: 10.1136/jnnp.74.3.333