Radiology
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To determine prospectively the diffusibility of water in normal lumbar disks in adults by using the mean apparent diffusion coefficient (ADC) and to determine if a relationship exists between disk ADC and magnetic resonance (MR) findings of disk degeneration. ⋯ A statistically significant decrease was seen in the ADC values of degenerated lumbar disks when compared with ADC values of normal disks. More caudal disks, even when normal, showed lower ADC values than more cephalic disks.
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Comparative Study
Current realities of delivering mammography services in the community: do challenges with staffing and scheduling exist?
To evaluate the current (2001-2002) capacity of community-based mammography facilities to deliver screening and diagnostic services in the United States. ⋯ Survey results show shortages of radiologists and certified mammography technologists.
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To retrospectively evaluate if the degree of disk degeneration and disk herniation volume at magnetic resonance (MR) imaging are risk factors for recurrent disk herniation. ⋯ Minor disk degeneration but not herniation volume represents a risk factor for the recurrence of disk herniation after diskectomy.
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To determine retrospectively the accuracy of screening ultrasonography (US) in patients with hypotension (systolic blood pressure
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Comparative Study
Tracheobronchomalacia: comparison between end-expiratory and dynamic expiratory CT for evaluation of central airway collapse.
To compare dynamic expiratory and end-expiratory computed tomography (CT) for depicting central airway collapse in patients with acquired tracheobronchomalacia (TBM). ⋯ Dynamic expiratory CT elicits a significantly greater degree of airway collapse than standard end-expiratory CT in patients with TBM.