Quiz: Novel Labeling Techniques of ASL, Qin

1. Which of the following ASL labeling techniques has been recommended for clinical applications in the ASL consensus paper of 2015?

A. Pulse ASL (PASL)
B. Continuous ASL (CASL)
C. Pseudo-Continuous ASL (PCASL)
D. Velocity-Selective ASL (VSASL)

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2. Which factors about neck arteries are the labeling efficiency of Pseudo-Continuous ASL (PCASL) sensitive to?

A. Flow velocity
B. B1 amplitude
C. B0 off-resonance
D. All of the above

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3. Single-delay Pseudo-Continuous ASL (PCASL) is sensitive to transit delay. Which of the following techniques have been demonstrated to obtain transit time simultaneously?

A. Multi-delay PCASL
B. Time-encoded PCASL
C. Fingerprinting PCASL
D. All of the above

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4. Which of the following Velocity-Selective ASL (VSASL) techniques have been demonstrated to improve the perfusion signal sensitivity?

A. VSASL using multiple velocity-selective-saturation modules
B. Acceleration-Selective ASL
C. VSASL using velocity-selective-inversion pulse trains
D. All of the above

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5. Which of the following is the basis for the velocity-selective-inversion pulse trains?

A. Hadamard encoding
B. Laminar flow assumption
C. Fourier transform
D. Adiabaticity

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