Quantitative analysis of periodontal defects in a skull model by subtraction radiography using a digital imaging device.

This paper describes a quantitative study of periodontal defects produced in a skull model using subtraction images obtained with a digital imaging device, radiovisiography (RVG). Analysis using radiovisiography was compared to changes in weight and volume determined by physical measurements. Four types of periodontal defects were studied: 2-wall, 3-wall, crater, and furcation.

Emergency arteriography in the assessment of penetrating trauma to the lower limbs.

One hundred emergency arteriographies (EA) were performed in 87 patients with lower limb trauma due to high-velocity missiles. Thirteen patients had bilateral injuries. In 79 cases, EA findings were positive and led to emergency surgery.

[Tumor calcinosis. Review of the literature: apropos of a case].

Tumoral calcinosis is an uncommon disease of unknown etiology characterized by the presence of single or multiple lobulated, para-articular, cystic soft tissue productions. Hyperphosphatemia is the only biological abnormality which can be detected. The honeycomb roentgenographic pattern is characteristic.