dcmri.fake_aif#
- dcmri.fake_aif(tacq=180.0, dt=1.5, BAT=20, field_strength=3.0, agent='gadodiamide', H=0.45, R10a=0.614, S0=150, model='SS', TR=0.005, FA=15, B1corr=1, TC=0.2, CNR=inf, dt_sim=0.1)[source]#
Synthetic AIF signal with noise.
- Parameters:
tacq (float, optional) – Duration of the acquisition in sec. Defaults to 180.
dt (float, optional) – Sampling interval in sec. Defaults to 1.5.
BAT (int, optional) – Bolus arrival time in sec. Defaults to 20.
field_strength (float, optional) – B0 field in T. Defaults to 3.0.
agent (str, optional) – Contrast agent generic name. Defaults to ‘gadodiamide’.
H (float, optional) – Hematocrit. Defaults to 0.45.
R10a (_type_, optional) – Precontrast relaxation rate for blood in 1/sec. Defaults to 1/dc.T1(3.0, ‘blood’).
S0 (int, optional) – Signal scaling factor in blood (arbitrary units). Defaults to 150.
model (str, optional) – Scanning sequences, either steady-state (‘SS’) or saturation-recovery (‘SR’)
TR (float, optional) – Repetition time in sec. Defaults to 0.005.
FA (int, optional) – Flip angle. Defaults to 20.
B1corr (float, optional) – B1-correction factor. Defaults to 1.
TC (float, optional) – time to center of k-space in SR sequence. This is ignored when sequence=’SS’. efaults to 0.2 sec.
CNR (float, optional) – Contrast-to-noise ratio, define as the ratio of signal-enhancement in the AIF to noise. Defaults to np.inf.
dt_sim (float, optional) – Sampling inteval of the forward modelling in sec. Defaults to 0.1.
- Returns:
time, aif, gt
time: array of time points.
aif: array of AIF signals.
gt: dictionary with ground truth values.
- Return type:
