Fig. 2
From: 18F-FLT PET/MRI for bone marrow failure syndrome-initial experience

Maximum intensity projection 18F-FLT PET (a) and DWI (b) images of a healthy subject. 18F-FLT PET clearly visualizes whole-body hematopoietic activity consistent with red bone marrow distribution (a). Whole-body DWI visualizes some organs, such as the spleen, kidneys, spinal cord, and lymph nodes, whereas red bone marrow is invisible or partially visible in normal subjects (b)