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Assessment of Bone Material Strength by Microindentation in vivo after Fracture or Surgery-related Immobilization

To compare Bone Material Strength of the tibia at the side of a fracture or arhtrodesis with that of the opposite tibia in patients who had been immobilized for at least 6 weeks after a recently sustained fracture of the ankle of calcaneus or after…

Towards endoscopic ultrasound and 11C-5-HTP PET screening for pancreatic neuroendocrine tumors in Multiple Endocrine Neoplasia type 1 and Von Hippel Lindau disease

To determine the additiotinal value of EUS and 11C-5-HTP PET scan for detection of pancreatic NET.

Healthy volunteer study for development of ASL MR for perfusion imaging of salivary glands

Primary: to determine normal values and test-retest variation of salivary gland perfusion using ASL in healthy volunteers. Secondary: to test the procedure by measuring possible perfusion differences during stimulated or suppressed salivation.