Search PubMed⌕ Search

Biomedical subjects

J Remy

Publications and source records attributed to J Remy.

At least 163 records · Page 9Linked to original sources
PubMedDate not supplied

Mediastinal bronchial artery aneurysm: dynamic computed tomography appearance.

Mediastinal aneurysms of the bronchial arteries are uncommon abnormalities with potentially fatal hemorrhagic complications. Their diagnosis is usually made by angiography in emergency situations but computed tomography (CT) scan may depict them in asymptomatic patients. We describe the CT appearance of such an aneurysm detected as an incidental finding in a patient with bleeding bronchiectasis.

Aneurysm↗
PubMedDate not supplied

Narrow superior mediastinum and pseudomasses: CT features.

The authors report three cases of abnormal chest radiography mimicking mediastinal masses. These radiographic findings were unrelated to any pathology, were discovered in asymptomatic patients, and must be considered consequences of unusually narrow thoracic inlets. Mean and standard deviations of the anteroposterior diameter of the superior mediastinum are given. Computed tomography of the chest yielded valuable diagnostic information and made it possible to exclude mediastinal masses.

Adult↗
PubMedDate not supplied

Comparison of vertical and oblique CT in evaluation of bronchial tree.

A prospective evaluation of segmental and subsegmental bronchi of 104 right and 109 left lungs was made from oblique CT scans of patients with normal airways. The frequency of identification of each of these bronchi was compared with the results of a similar retrospective analysis of 107 right and 113 left lungs, studied with standard vertical CT slices. The percent visualization of all bronchial ramifications is tabulated, allowing us to state that the 20 degrees cranially oblique slice considerably improves CT analysis of the bronchial tree. Several potential uses of oblique CT are discussed and applied to bronchial disease evaluation.

Adult↗
PubMedDate not supplied

CT angiography of thoracic outlet syndrome: evaluation of imaging protocols for the detection of arterial stenosis.

PURPOSE: The purpose of this work was to evaluate the results of cross-sectional imaging and multiplanar and 3D reconstructions for the detection of thoracic outlet arterial stenosis on CT angiograms. METHOD: Eighty-two patients were prospectively evaluated with CT angiography: in the neutral position and after postural maneuver (164 acquisitions); with contralateral injection of a 24% (Group 1; n = 68) or 30% (Group 2; n = 96) contrast agent; and reconstruction of four sets of images from each acquisition, that is, transverse CT scans, sagittal reformations, and 3D [shaded surface displays (SSD) and volume-rendered (VR)] images. A total of 656 sets of images were blindly and independently interpreted by three readers of variable experience. A consensus interpretation of the four sets of images of each acquisition was used as a standard of reference. RESULTS: The number of examinations coded with an excellent degree of arterial enhancement was significantly higher in Group 2 than in Group 1 [68 (71%) vs. 35 (51%); p < 0.001]. The sensitivity and specificity for detection of arterial stenosis were 67 and 96% for transverse CT scans, 69 and 94% for sagittal reformations, 71 and 99% for 3D-SSDs, and 95 and 100% for VR images. Compared with the standard of reference, a concordant scoring of arterial stenosis severity was found in 54% of transverse CT scans, 84% of sagittal reformations, 78% of 3D-SSDs, and 91% of VR images. Underestimation of stenosis was found in 43% of transverse CT scans and 10% of sagittal reformations; overestimation of stenosis was more frequent on 3D-SSDs (16%) than on VR images (7%). The reader's experience was marked for the interpretation of cross-sectional images but did not influence the interpretation of 3D images. CONCLUSION: Thoracic outlet arterial compression is best depicted with the injection of a 30% contrast agent and reconstruction of VR images.

Adolescent↗