Cone-beam computed tomography: a new low dose, high resolution imaging technique of the wrist, presentation of three cases with technique.

Cone-beam computed tomography (CBCT) is a relatively new technique. It generates a 3D image by emitting a pulsed cone-shaped X-ray beam. CBCT has become a very useful and widely used technique for dentomaxillofacial imaging over the last decade.

Digital tomosynthesis in the detection of urolithiasis: Diagnostic performance and dosimetry compared with digital radiography with MDCT as the reference standard.

Objective: The purpose of this study was to evaluate the diagnostic performance of digital tomosynthesis in comparison with digital radiography in the detection of urinary stones with MDCT as the reference standard.

Subjects And Methods: Fifty consecutively enrolled patients (32 men, 18 women; mean age, 51.5 years; range, 19-83 years) referred for unenhanced MDCT of the abdomen with suspicion of urinary stones also underwent digital tomosynthesis and digital radiography (anteroposterior and bladder inlet views).

Pseudodynamic magnetic resonance imaging in the diagnosis of temporomandibular joint dysfunction.

Two imaging methods are useful in diagnosing internal derangements of the temporomandibular joint: arthrography and magnetic resonance imaging (MRI). Clinical and pseudodynamic MRI findings of 200 temporomandibular joints in 100 patients were evaluated and compared. In 66.

MR of the inner ear in patients with Cogan syndrome.

Purpose: To determine whether the bony and soft-tissue obliterations of the intralabyrinthine fluid spaces reported in pathologic studies of patients with Cogan syndrome can be detected with MR or CT.

Methods: The inner ears of six patients with Cogan syndrome were studied. High-resolution CT was performed in five patients; all six patients were studied with MR, including T1-weighted spin-echo images with and without gadolinium administration, T2-weighted spin-echo images, and three-dimensional Fourier transform constructive interference in steady state images.

Early prediction of non-survival for patients suffering cardiac arrest--a word of caution. The Belgian Cerebral Resuscitation Study Group.

A total of 6178 persons with out-of-hospital (70%) and in hospital (30%) cardiac arrests from the first of January 1982 until the end of 1989 were reviewed retrospectively with respect to 4 variables, contributing to a score for specific prediction of poor prognosis (cut-off point: greater than 3 points). These included age, initial ECG, type of respiratory arrest and bystander resuscitation. Presence of ventricular fibrillation, gasping and bystander resuscitation contributes nothing to the score, while presence of asystole or EMD (electromechanical dissociation), apnoea and absence of bystander resuscitation adds one point to it.