3D display of high resolution vertebral structure images.

In this paper we present a methodology for three-dimensional representation of vertebral structures. A set of X-ray CT images is obtained on a specific high resolution acquisition system. The images are then segmented in order to separate trabecular and cortical structures.

3D display of high resolution vertebral structure images.

A methodology for three-dimensional (3D) representation of vertebral trabecular structures was proposed. A set of X-ray CT images was obtained using a specific high resolution acquisition system. The images were then segmented in order to separate trabecular and cortical bone structures.

[Attenuated nodal response. Apropos of 30 cases].

In a population of 600 consecutive patients undergoing endocavitary electrophysiological study to assess nodal conduction, 40 had an atriohisian Wenckenbach point of over 200/mn. In 30 cases, vagal stimulation with ATP (10 to 40 mg IV) provoked an increase in atrioventricular conduction, with lengthening the AH interval by over 100 p. 100 or transient atrioventricular block.