Radiographs in periodonties

Radiographs in shoulder trauma.

It is difficult to establish the diagnosis of an injured shoulder if only one radiographic projection is used. We have compared two lateral projections, the Neer trans-scapular and the apical oblique in 80 patients; the radiographs were presented randomly to 10 casualty officers and nine radiologists. The apical oblique view was found to permit more accurate diagnosis of fractures and of disloc...

Sharpening radiographs.

This article describes a method for clarifying and sharpening radiographs. The method uses convolution with a computed tomography reconstruction kernel and a noise elimination procedure to control the noise amplification of the convolution. The effect is to flatten global variations and to sharpen and magnify local variations. Examples from industry and medicine are included.

Flaw Simulation in Product Radiographs

Stress radiographs in orthopaedic surgery.

Stress radiographs are useful in determining the amount of ligamentous laxity present following trauma. The results may be helpful in determining diagnosis, surgical indications, and the type and timing of rehabilitation. Some techniques for obtaining stress radiographs involve specific patient positioning or manually applied force; others require use of a particular testing device. Stress radi...

Guidelines for Prescribing Radiographs

Radiographs can only be prescribed by a dentist and then only after a clinical examination has been performed to determined which projections are required to give the maximum diagnostic information. After considering the clinical findings, medical and dental history, [the radiographic needs of each patient must be considered individually. Radiographic views must be selected to give the maximum ...