Human demineralised bone matrix as a bone substitute for reconstruction of cystic defects of the lower jaw.

In a retrospective study validated by a standardized clinical and radiological examination, the bone regeneration in 90 patients with cystic mandibular defects was examined. In 50 patients bony defect reconstructions with human demineralised bone matrix (HDBM) were carried out, while in a comparable group of 40 patients the hollow pockets were left to regenerate bone spontaneously. The bone regeneration after the implantation of human demineralised bone matrix (HDBM) was subjected to a comparative validation.

Virtual endoscopy of the small bowel: phantom study and preliminary clinical results.

The purpose of this study was to determine the optimal scanning technique for lesion detection in a small bowel phantom and to evaluate the virtual endoscopy (VE) technique in patients. A small bowel phantom with a fold thickness of 7 mm and length of 115 cm was prepared with nine round lesions (3 x 1 mm, 2 x 2 mm, 2 x 3 mm, 2 x 4 mm). Spiral CT parameters were 7/7/4, 3/5/2, 3/5/1, 1.