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Insights into Imaging
Fig. 4 | Insights into Imaging

Fig. 4

From: Lesion-to-background ratio threshold value of SUVmax of simultaneous [68Ga]Ga-PSMA-11 PET/MRI imaging in patients with prostate cancer

Fig. 4

[68Ga]Ga-PSMA PET/MRI images obtained in a 79-year-old man, PSA 2.20 ng/mL. a [68Ga]Ga-PSMA PET/MRI; b T2WI; c DWI, b value 1000 s/mm2; d ADC. Background SUVmax 1.7. MRI-positive lesions are yellow arrows and white arrow. Yellow arrow: SUVmax 5.9, LBR 3.5 (middle of PZ) and 4.2, LBR 2.5 (right TZ). White arrow: SUVmax 1.6, LBR 0.9 (right PZ). MRI-negative lesion is green arrow, SUVmax 1.4, LBR 0.8 (left TZ). This example showed that MRI-positive lesions could be either PSMA avid uptake (yellow arrows) or unapparent PSMA uptake (white arrows). And MRI-negative lesions could be unapparent PSMA uptake (green arrows)

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