Hydropneumothorax is a patological condition of pleura characterised by presence of both liquid and air, rarely of gas between two pleura laminae.According to the origin,it can be result of a disease or a trauma. A typical roentgenogram is obtained during radiography in a standing position and PA projection: horizontal level of liquid represented by homogeneous shadow merging with diaphragm shadow and avascular light without visible parenchyma above the liquid level. The authors present two cases of hydropneumothorax. The first case is about hydropneumothorax originated after several repeated tapping of pleural effusion of malignant etiology. In the second case, hydropneumothorax is a thorax injury complication. Hydropneumothorax rarely appears in practice, and diagnosis is fast and accurate just based on clinical picture and standard lung radiography.

Basic features of spiral scanners are described, and constructive features of multislace devices are described in detail.Basic principles of functioning and detector number of multislace scanners are described, particularly in 64 layered devices.A short survey of device construction and received X-ray dose during examination is presented. Diagnostic possibilities and multislace scanner application according to organs and organ systems, as well as their advantages in relation to sequential and spiral scanners, are presented.

Theoretical principle of computerized tomography was set by Czech mathematician J. Radon in 1917.The development of computerized tomography is connected with the name of A.M Cormack who, in 1963, started with the research directed at X-ray beam intensity measurement after passing through certain substance.First computerized tomography appartus was installed in Atkinson-Morley hospital in October in 1971 in London. Computerized tomography is based on making transverse(axial) cross-section of body parts,by X-ray beam passing through visible body part and by measurement of X-ray absorption degree using detectors. A cross-section picture of certain body part is obtained on a monitor as a final result of CT examination. A system of picture digitalisation and application of grey scale concept is particularly complex. Basic elements of CT are gentry, patient's bed, high-voltage generator, working and computer console, system for transferring picture on a film or other electronic media. Densimetric tissue values can be measured on the obtained CT picture. A change can be isodense, hypodense or hyperdense. Density change is expressed in Hounsfield units. Contrasting remedies can be applied, during CT, intracanalicular or intravenous. A better quality survey of changes increasing tissue density is obtained using them. CT application is indicated in diseases such as:neurocranium, visceral cranium, spinal column, thorax, abdomen, skeletal, joint and muscular system. X-ray side effects and precaution risks are being described in the text.

Authors analyse radiological characteristics of different forms of osteomyelitis in the period from 1990. to 1994. on Ortopedic and infective Clinic of Clinical hospital Centre in Pristina. Clinical picture of unspecific osteomyelitis of different forms, tubercular and brucellosis osteomyelitis is presented radiolography, tomography, myelography, fistulography, arteriography, scintigraphy, and computerized tomography. Radiological changes of osteomyelitis of different etiology and clinical picture are presented in detail