AJR. American journal of roentgenology
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AJR Am J Roentgenol · May 2002
ReviewDependent pooling: a contrast-enhanced sign of cardiac arrest during CT.
The purpose of this study is to describe the imaging features of cardiac arrest that occur during CT. ⋯ CT features of cardiac arrest are characterized by a pooling of contrast agent in the dependent parts of the right side of the body, including the venous system and the right lobe of the liver. If medical professionals are aware of these specific imaging features, prompt cardiac resuscitation can be initiated to avoid permanent brain damage and death.
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AJR Am J Roentgenol · May 2002
Clinical TrialOccult fractures of the waist of the scaphoid: early diagnosis by high-spatial-resolution sonography.
This study evaluated the diagnostic accuracy of high-spatial-resolution sonography in the diagnosis of occult fractures of the waist of the scaphoid. ⋯ High-resolution sonography is a reliable and accurate method of evaluating occult fractures of the scaphoid waist. Cortical disruption is the diagnostic key. Soft-tissue abnormalities alone lack specificity.
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AJR Am J Roentgenol · May 2002
Aberrant subclavian arteries: cross-sectional imaging findings in infants and children referred for evaluation of extrinsic airway compression.
The purpose of our study was to describe patterns of airway compression identified on cross-sectional imaging in infants and children with either right aortic arch and aberrant left subclavian artery or left aortic arch with aberrant right subclavian artery. ⋯ Both right and left aberrant subclavian arteries can be associated with symptomatic airway compression, but the patterns of compression are different. The airway compression in right aortic arch with aberrant left subclavian artery is often associated with either Kommerell's diverticulum or midline descending aorta, whereas compression associated with left aortic arch and aberrant right subclavian artery is not.
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AJR Am J Roentgenol · May 2002
Radiologic and clinical spectrum of occipital condyle fractures: retrospective review of 107 consecutive fractures in 95 patients.
We proposed to characterize the radiologic spectrum of occipital condyle fractures in a large series of patients and to correlate fracture pathology with neurosurgical treatment and patient outcome. ⋯ Given their associated traumatic brain and cervical spine injuries, occipital condyle fractures are markers of high-energy traumas. That conventional radiographs alone may miss up to half of the patients with acute craniocervical instability has not been well established. Avulsion fracture type and fracture displacement are associated with both injury mechanism and the need for surgical stabilization. In this series, most unilateral occipital condyle fractures were treated nonoperatively, whereas bilateral occipitoatlantoaxial joint injuries with findings of instability usually required surgical stabilization.