Røntgenpulverdiffraktion - 90 år med Debye-Scherrer-metoden

Med Bragg’s lov og Debye-Scherrer-metoden åbnedes nye døre for identifikation af kemiske forbindelser ved anvendelse af røntgenpulverdiffraktion. I dag er der registreret 186.000 forbindelser

Det mystiske vinmineral - et forslag til identiteten af vindruekrystallerne

Hermed et forslag til identiteten af de “vindruekrystaller”, som omtales i GeologiskNyt 2/05

MRi of the knee compared to specialized radiography for measurements of articular cartilage height in knees with osteoarthritis

This study aims to evaluate and compare extremity-MRi with specialized radiography by measuring articular cartilage height in patients with knee osteoarthritis. A prospective study, including sixty patients. Measurements on MRi images, Rosenberg view, and coronal stress radiographs were performed. MRI was compared to specialized radiography. Measurements in the medial compartment showed negligible/weak correlation between MRi and Rosenber/varus stress. In the lateral compartment, MRi and the Rosenberg/valgus stress view were strongly correlated. We conclude that MRi cannot replace radiographs for the measurement of articular cartilage thickness. MRi should, however, be reserved for more unusual cases of atypical clinical findings