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At least 883 records · Page 49Linked to original sources
PubMed1980

[Cranial computer tomography in children. Correlation of echoencephalography and EEG to cranial computer tomography].

The results of cranial ultrasound (A-scan) and computerized tomography (CT) in 81 children were corresponding in 90%, when ventricular diameter was determined, in 85% of intracerebral dysplasias, and in 12,5% of neonatal intracranial hemorrhagia. Comparison of EEG and CT findings in 70 of these children were corresponding in 54% of the cases with respect to "normal" and "abnormal". On the basis of these results routine one-dimensional ultrasound scanning still seems to be a useful procedure.

Adolescent↗
PubMed1994

Detection of nodular lesions in the lung using helical computed tomography: comparison of fast couch speed technique with conventional computed tomography.

The present study assessed the ability of helical CT performed at fast couch speeds (20 mm or 25 mm/sec), sufficient to cover the entire lung field during a single breath hold, compared with conventional CT for detecting pulmonary nodules in patients with metastatic lung disease. The subjects were seven consecutive patients with metastatic lung tumors in whom 152 lesions were detected by conventional CT. The average diameter of the nodules was 8.3 (range 2-23 mm). To scan the entire lung, we first employed conventional CT (10-mm slice thickness, 10 mm couchtop slide). We then used helical CT with couchtop speeds of 20 and 25 mm/sec, permitting easy scanning of the entire lung field during a single breath hold (images of reconstruction intervals; 25, 20, 12.5 and 10 mm). We assessed each image to compare detection capabilities in the lung. The detection capabilities for each reconstruction interval were 78, 83, 91 and 97%, respectively. The detection of nodules was superior for 12.5 and 10 mm images than for 25 and 20 mm images (P < 0.01). In 25 and 20 mm images, the detection capability was significantly lower in the apical area than in the middle area (P < 0.01). For nodules 5 mm in diameter, 10 mm images permitted complete detection. Helical CT fast couch speeds (20 or 25 mm/sec), which allow imaging of the entire lung during a single breath hold, may be useful in detecting metastatic pulmonary nodules, and helical CT is expected to be a useful method for lung screening.

Aged↗
PubMed1994

[High-resolution computed tomography study (HRCT) in so-called emphysema B. The correlations between the radiogram, the anatomical findings yielded by high-resolution computed tomography and the clinico-functional assessment].

The results are reported of a prospective study on 28 emphysematous patients with clinical, functional and radiologic correlations. Thirteen of 28 patients had type-B, the clinical "blue and bloater", emphysema. The grade of emphysema was investigated on conventional chest films and on HRCT scans, with a visual scoring system. Hyperinflation was assessed on conventional chest films and correlated with the extent of emphysema on HRCT images and with functional impairment. In our series, the extent of emphysema in B-type patients was markedly lower than in other patients of the same age, with the same smoking habits, dyspnea and functional impairment. Moreover, the incidence of centrilobular involvement was higher, though not statistically significant. The B-type exhibited more severe dilatation of subsegmental pulmonary arteries (76.9% vs. 20% p < 0.001) and a striking incidence of small airway disease (84.6% vs. 26.6%, p < 0.002). This findings may explain the radiographic pattern of "increased vascularity" seen on chest films. Bronchiolectasis and small airway wall thickening are much more frequent in type-B emphysema, together with patchy areas of ground-glass opacity and small peripheral nodules. A close correlation was observed between signs of small airway disease on HRCT images and functional clinical impairment. Thus, the small airway disease might eventually prove to be a more critical factor in causing functional and hemodynamic impairment in B-type emphysema than the actual extent of centrilobular emphysema.

Adult↗