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Fig. 2 | Journal of Analytical Science and Technology

Fig. 2

From: Altered saturation pulse with a high flip angle for venous saturation on 7 T time-of-flight magnetic resonance angiography

Fig. 2

The experimentally measured water phantom and time-of-flight images. a The two presaturation pulses (yellow box) with the same position, parameters, and thicknesses (20 mm) are identically applied to the water phantom. To observe the performance of the minimum-time variable-rate selective excitation (MinVER), the signal profiles are evaluated in the identical site of the two images (blue dot lines). b In addition, the VTCR is calculated to verify the efficiency of the MinVER, which is collected from the signals of the region of interest in the venous (light blue circle), arterial phase (red circle), and background tissues (red and light blue dot circles). VTCR = vessel-tissue contrast ratio; SigMCA, middle cerebral artery; SigSS, sagittal sinus; Sigtis, background tissues

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