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EJNMMI Physics

Table 1 Parameters of IDIF and AIF for consecutive and simultaneous TOF-MRA/PET acquisition

From: Fully automated calculation of image-derived input function in simultaneous PET/MRI in a sheep model

 

Shifted

Unshifted

Group

cc

IA/EA

AUC IDIF/AUC AIF

cc

IA/EA

AUC IDIF/AUC AIF

Consecutive

0.98 ±0.10

3.17 ±0.66

0.93 ±0.09

1.01 ±0.11

2.89 ±0.72

0.84 ±0.17

Simultaneous

1.01 ±0.08

2.78 ±0.96

0.96 ±0.13

1.01 ±0.07

2.76 ±0.88

0.91 ±0.06

  1. The cross-calibration factor, cc, is given in the form c c±σ(c c) (cf. Eqs. 7 and 8). The value IA/EA represents the ratio of activity concentration between the intraarterial and the extraarterial space as mean and standard deviation over subjects in steady state. The data labeled ‘Shifted’ stems from the PET-aligned TOF-MRA data, whereas ‘Unshifted’ labels results from the non-aligned data
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