Oblique Tomography Research Articles

„Complex motion” - Tomographie des Sakroiliakalgelenks

To find a better method for diagnosing sacroiliac (SI) joint disease, an anatomical approach was combined with conventional roentgenology, complex motion tomography and computed tomography. Complex motion tomography is suggested as the method of choice in the investigation of the SI-joint. Because of its complex (sinusoidal) form, the dorsal portion of the joint has to be tomographed in frontal projection and the middle and ventral portions in oblique projection. In 56 patients, referred for probable ankylosing spondylitis, 72 SI joints were investigated. Based on plain radiography six and on frontal tomography five SI joints were diagnosed as normal. However, based on oblique tomography 31 joints were diagnosed as normal.

Evaluation of the Pulmonary Hilum

In 84 patients with suspected intrathoracic neoplasms we compared the accuracy of conventional radiography, 55 degrees posterior oblique tomography, and contrast-enhanced dynamic incremental computed tomography (CT) in evaluation of the pulmonary hilum. We found dynamic incremental CT to be better than either conventional radiography or oblique tomography in hilar evaluation. In addition, significant information was detected in extrahilar and extramediastinal locations by CT in 21% of patients. This study, unlike earlier reports, indicates a role for CT in hilar evaluation.

Fifty‐Five Degree Posterior Oblique Tomography of the Chest

SUMMARYFifty‐five degree posterior oblique tomography of the chest is currently a popular method of evaluating the hilum. Although a relatively recent modality in English‐speaking countries, its use goes back several decades in parts of Europe.Over 1,000 of our patients have now been examined by this technique, and we have found it to be a highly accurate means of evaluating hilar pathology. Our principal use of the technique is in the staging of lung cancer, where it is utilised along with computed tomography and gallium scanning. We have found posterior oblique tomography to be as accurate, and occasionally superior, to computed tomography in staging the hilum. The technique is ideal for excluding pathology in the case of the “problem” hilum, and of great use in the localization of lesions adjacent to the posterior portions of the major fissures.With experience, the radiographic anatomy in the oblique projection is easy to interpret.

Posterior oblique tomography at an angle of 55 degrees in chest roentgenology.

POSTERIOR OBLIQUE TOMOGRAPHY AT AN ANGLE OF 55° IN CHEST ROENTGENOLOGYGÉRARD FAVEZ, M.D., CLAUDE WILLA, M.D. and FRANÇOIS HEINZER, M.D.Audio Available | Share