AJR. American journal of roentgenology
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AJR Am J Roentgenol · Jun 2000
Usefulness of the double-wall sign in detecting pneumothorax in patients with giant bullous emphysema.
We describe a new sign improving detection of pneumothorax in patients with giant bullous emphysema: air surrounding both sides of the bulla wall (the intrathoracic equivalent of the double-wall sign of pneumoperitoneum). We report the radiographic and CT appearances of the double-wall sign in seven patients with giant bullous emphysema, four of whom had pneumothorax. ⋯ Recognizing the double-wall sign of pneumothorax should aid in the triage of patients with giant bullous emphysema.
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AJR Am J Roentgenol · Jun 2000
Radiography of cervical spine injury in children: are flexion-extension radiographs useful for acute trauma?
We assessed the role of cervical spine flexion-extension radiographs in the acute evaluation of pediatric trauma patients. ⋯ In children with a history of trauma and normal findings on static cervical spine radiographs, additional flexion-extension radiographs are of questionable use.
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AJR Am J Roentgenol · Jun 2000
Sarcoidosis with pulmonary fibrosis: CT patterns and correlation with pulmonary function.
The purpose of our study was to identify CT patterns of pulmonary fibrosis in patients with sarcoidosis and to correlate these patterns with pulmonary function tests. ⋯ CT may be a useful tool for defining subgroups of patients with fibrotic pulmonary sarcoidosis. CT reveals three main patterns that may reflect different distributions of fibrotic lesions in the lung with different functional pulmonary impairments. The persistence of active pulmonary lesions suggested by the presence of nodular lesions was often associated with linear and distorted patterns.
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AJR Am J Roentgenol · May 2000
MR imaging assessment of the pectoralis major myotendinous unit: an MR imaging-anatomic correlative study with surgical correlation.
MR imaging is the optimal imaging technique to study the normal and abnormal conditions of the pectoralis major muscle and tendon unit. The purpose of this study was to use MR imaging to provide an anatomic survey of the normal pectoralis major tendon and its insertion and to compare these findings with surgically proven cases of rupture. ⋯ MR imaging shows the normal pectoralis major myotendinous unit has low signal intensity on both T1- and T2-weighted images. Reliable anatomic landmarks for visualization and examination of injuries to the muscle and myotendinous unit include the quadrilateral space, or the origin of the lateral head of the triceps, as the superior boundary and the deltoid tuberosity as the inferior boundary of the intact tendon of insertion. Failure to visualize a normal insertion within these boundaries should prompt a dedicated search by the radiologist for rupture and retraction of the tendon medially.