Contrast harmonic imaging and pulse inversion
An Adaptive Pulse Compression Filter for Ultrasound Contrast Harmonic Imaging
... small, which may not be good for imaging system to have high range resolution. Although SCS can not show the effect of resonant bandwidth on the scattered wave- form, it does show the problem of insufficient ...
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Fractional Fourier Transform with Pulse Inversion for Second Harmonic Pulse Compression
... The pulse compression of the extracted SHC, using the FrFT and matched filtering techniques, is shown in ...second harmonic pulse compression results are shown in Table ...
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Quantitative contrast harmonic imaging of the normal and diseased canine spleen
... technology, contrast harmonic ...with contrast harmonic ...lesions. Contrast harmonic imaging may represent a useful non-invasive tool to assess splenic lesions in the ...
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Cylindrical Inversion Pulse for the Reduction of Cardiac Motion Artifacts in Contrast-enhanced Breast MRI
... The CREST technique can be easily applied to routine clinical studies because this prepulse is based on an alterna- tive usage of relatively common procedure for unenhanced MR angiography known as time-spatial labeling ...
Contrast-Enhanced Ultrasound Imaging with Chirps: Signal Processing and Pulse Compression
... Tissue always generates harmonics in an expected manner, but microbubbles have unique acoustic signatures that change with size, shell composition, gas core, excitation pressure, and excitation frequency. However, the ...
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Contrast-Enhanced Ultrasound Imaging with Chirps: Signal Processing and Pulse Compression
... Tissue always generates harmonics in an expected manner, but microbubbles have unique acoustic signatures that change with size, shell composition, gas core, excitation pressure, and excitation frequency. However, the ...
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Current and Emerging MR Imaging Techniques for the Diagnosis and Management of CSF Flow Disorders: A Review of Phase Contrast and Time–Spatial Labeling Inversion Pulse
... labeling inversion pulse MR imaging techniques to assess CSF movement in the CNS under normal and pathophysiologic ...labeling inversion pulse, with a high signal-to-noise ratio, ...
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Contrast Enhanced Fluid Attenuated Inversion Recovery Imaging for Leptomeningeal Disease in Children
... a contrast-enhanced FLAIR sequence in detecting lep- tomeningeal disease in two, highly selected pediatric populations: patients with Sturge-Weber syndrome and patients with ...FLAIR imaging over standard ...
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MR imaging of malignant uveal melanoma: role of pulse sequence and contrast agent
... Another subretinal fluid collection was isointense with tumor on noncontrast T1-weighted images with equivo- cal findings on T2-weighted images, but postcontrast T1- weighted[r] ...
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Diagnostic Value of Contrast Enhanced Fluid Attenuated Inversion Recovery MR Imaging of Intracranial Metastases
... Sixty-nine patients (33 women, 36 men; mean age, 51 years; age range, 5–77 years) with a known primary malignancy and clinically suspected cranial metastases underwent MR imaging at 1.0 T. The distribution of the ...
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The effect of inversion times on the minimum signal intensity of the contrast agent concentration using inversion recovery t1-weighted fast imaging sequence
... 12. Nazarpoor M. Effect of concentration of con- trast agent on the inflow effect for measuring abso- lute perfusion by use of inversion recovery T1- weighted TurboFLASH images, Radiol Phys Tech- nol. 2011 Nov; ...
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Phase Sensitive T1 Inversion Recovery Imaging: A Time Efficient Interleaved Technique for Improved Tissue Contrast in Neuroimaging
... T1 contrast in an IR sequence is different from that of the SE ...T1 contrast for dif- ferent ...the contrast between tissues, depending on the value of TI, as demonstrated in Figure ...the ...
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Tailored RF Pulse for Magnetization Inversion at Ultrahigh Field
... the pulse defined on the scanner is a relatively low bandwidth pulse and so does not exceed the available gradient even for a 1- nun ...ms pulse, the C-FOCI pulse performs better than the HSC ...
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Non-contrast coronary artery wall and plaque imaging using inversion-recovery prepared steady-state free precession
... direct imaging of intracoronary thrombus in patients shortly after myocardial infarction ...high contrast may be the presence of intracoronary or intra- plaque thrombus containing methemoglobin, which is ...
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Non-contrast coronary artery wall and plaque imaging using inversion-recovery prepared steady-state free precession
... direct imaging of intracoronary thrombus in patients shortly after myocardial infarction ...high contrast may be the presence of intracoronary or intra- plaque thrombus containing methemoglobin, which is ...
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Imaging with Second Harmonic Generation Nanoparticles
... We prepared isolated individual nanoparticles on an indium-tin-oxide (ITO) coated glass substrate for SHG characterization. The ITO-coated glass substrate is conductive which allowed us to image the nanoparticles by ...
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Performance of Switched Mode Arbitrary Excitation using Harmonic Reduction Pulse Width Modulation (HRPWM) in Array Imaging Applications
... systems. Harmonic Re- duction Pulse Width Modulation (HRPWM) provides a method to design five level switched mode excitation signals with control of instantaneous amplitude, frequency and phase plus ...
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Performance of Switched Mode Arbitrary Excitation using Harmonic Reduction Pulse Width Modulation (HRPWM) in Array Imaging Applications
... systems. Harmonic Re- duction Pulse Width Modulation (HRPWM) provides a method to design five level switched mode excitation signals with control of instantaneous amplitude, frequency and phase plus ...
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Imaging of Acute Subarachnoid Hemorrhage with a Fluid Attenuated Inversion Recovery Sequence in an Animal Model: Comparison with Non–Contrast Enhanced CT
... We did not evaluate susceptibility- or T2*- weighted images in this study. The investigators believed that this study represented an effort to evaluate FLAIR images specifically, as recent find- ings in the literature ...
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High-contrast ultrafast imaging of the heart
... desired imaging depth and a maximum velocity while satisfying this criterion (one should notice that such a criterion on the compounded image quality is much more severe than a criterion on the quality of the ...
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