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Diagnose of GH-deficiency: comparing the dietary-protein test with conventional Growth Hormone Stimulation Tests

To investigate if there is a correlation between the peak GH concentrations after ingestion of gelatin protein and the peak GH concentrations after the two standard tests (GHST) in order to discriminate between GHD and non-GHD. To investigate the…

Viscosity of PMMA Bone Cement in Percutaneous Vertebroplasty for Osteoporotic Vertebral Compression Fractures: A Randomized Controlled Trial

Establishment whether usage of high viscosity PMMA bone cement in PVP for OVCFs leads to a reduction in leakage incidence compared to usage of conventional (low-medium) viscosity PMMA bone cement in PVP for OVCFs.Since evidence is scarce or…

The effect of aspiration during FNAC of the thyroid on adequacy of cytologic material

Our goal is to evaluate if this onsite assessment and aspiration during punction reduces inadequacy of specimens and see if onsite assessment by the aspirator is performed accurately after a brief instruction by a cytopathologist. Primary Objective…

Comparison of outcome with three different needles in ultrasound assisted fine needle aspiration cytology (FNAC) of the thyroidal gland.

Primary objective: to obtain an comparison of the diagnostic result after an ultrasound assisted fine needle aspiration cytology (FNAC) of the thyroidal gland by use of a smaller diameter (25G) and / or a special coating.