Journal of computer assisted tomography
-
J Comput Assist Tomogr · Jan 1993
High resolution CT in respiratory bronchiolitis-associated interstitial lung disease.
High-resolution CT findings have been described for several diffuse lung diseases. Respiratory bronchiolitis-associated interstitial lung disease (RB-ILD) is an inflammatory lung disorder associated with cigarette smoking. ⋯ We describe high-resolution CT findings in five cases of biopsy-proven RB-ILD. The findings are variable and range from no detectable abnormality to atelectasis, ground-glass opacities, emphysema, and linear and reticular interstitial abnormalities.
-
J Comput Assist Tomogr · Jan 1993
Comparative StudyIntracranial MRA: single volume vs. multiple thin slab 3D time-of-flight acquisition.
Single volume three-dimensional (3D) time-of-flight (TOF) MR angiography is the most commonly used noninvasive method for evaluating the intracranial vasculature. The sensitivity of this technique to signal loss from flow saturation limits its utility. A recently developed multislab 3D TOF technique, MOTSA, is less affected by flow saturation and would therefore be expected to yield improved vessel visualization. ⋯ There is improved visualization of selected intracranial vessels in normal volunteers with MOTSA as compared with single volume 3D TOF. These improvements are believed to be primarily a result of decreased sensitivity to flow saturation seen with the MOTSA technique. No difference in overall vessel visualization was noted for the two single volume 3D TOF techniques.
-
J Comput Assist Tomogr · Jan 1993
Occult pneumothorax in patients with abdominal trauma: CT studies.
Abdominal CT, which routinely includes the lower thorax, is an important adjunct to supine chest radiography in detecting chest injury in patients with blunt abdominal trauma. In 1,086 consecutive patients with blunt abdominal trauma, 223 of whom had both supine chest radiography and abdominal CT, 49 patients examined with both techniques had pneumothoraces, 28 of them occult (seen only on CT). ⋯ Seven of 14 cases with anterior pneumothorax were observed and resolved without complication; seven had chest tube placement. All eight patients with anterolateral pneumothoraces underwent percutaneous tube thoracostomy, regardless of proposed management.
-
J Comput Assist Tomogr · Jan 1993
Case ReportsInfrarenal vena caval injury following blunt trauma: CT findings.
Isolated infrarenal vena caval injury following blunt trauma is rare. In most patients, poor clinical status usually precludes imaging prior to laparotomy. When CT is performed, however, signs that allow a diagnosis of caval injury to be made are (a) retroperitoneal hematoma with paracaval epicenter; (b) irregular vena caval contour; and (c) extravasation of contrast-enhanced blood from the cava.