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Intracranial air on computerized tomography

Anne G. Osborn, Jonathan H. Daines, S. Douglas Wing, and Robert E. Anderson

C ranial computerized tomography (CT) has made possible the rapid, accurate identification of a wide variety of intracranial lesions. In many instances, a definitive diagnosis is possible on the basis of the CT scan alone. In others, the CT scan may provide additional information facilitating the management of complex neurological or neurosurgical problems. The detection of intracranial gas is such an instance. In the absence of prior diagnostic or surgical procedures such as lumbar puncture, pneumoencephalography, or craniotomy, the presence of intracranial

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Computerized tomography of cranial sutures

Part 1: Comparison of suture anatomy in children and adults

Yoshimi Furuya, Michael S. B. Edwards, Charles E. Alpers, Brian M. Tress, Douglas K. Ousterhout, and David Norman

P lain skull radiographs and radionuclide scans have been the traditional means used to image the sutures of the cranial base and vault. However, neither method can provide adequate images of sutures of the cranial base. Computerized tomography (CT) scanning with high-resolution bone definition algorithms provides a method with which the anatomy of sutures can be examined in detail section by section. For this purpose, CT scans are superior to plain skull radiographs. 1, 3 The CT appearance of the structure of normal sutures has not been described. In

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Intracranial biopsy assisted by computerized tomography

Joseph C. Maroon, William O. Bank, Burton P. Drayer, and Arthur E. Rosenbaum

T he neurodiagnostic approach to intracranial tumors has been markedly advanced by the use of computerized tomography (CT). Assessment of relative tissue absorption and integrity of the physiological blood-brain barrier allows visualization of tumor capsules, cysts, infiltrative patterns, structural displacement, and cerebral edema. With such precision in intracranial localization, CT seems to be extremely valuable for interventional techniques such as tumor biopsy, cyst aspiration, and abscess drainage. Although only a two-dimensional display is now generally

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Computerized tomography of peripheral nerve lesions

Stephen K. Powers, David Norman, and Michael S. B. Edwards

T he use of computerized tomography (CT) in the identification of soft-tissue tumors is now well recognized. However, its specific application to the detection and delineation of peripheral nerve lesions has only recently been described. 3, 5 During the past 3 years, we have used high-resolution CT routinely in patients suspected of having, or known to have, a peripheral nerve tumor. Clinical Material and Methods We evaluated nine patients with peripheral nerve lesions. Six of these patients had a lesion involving the brachial plexus: three proved to be

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Childhood odontoid fractures evaluated with computerized tomography

Case report

David J. Vining, Edward C. Benzel, and William Orrison

O dontoid fractures in children, although rare, have been described only with plain films. We present the first diagnosis of such an injury using computerized tomography (CT). Case Report This unrestrained 2-year-old child was ejected from a car during a motor-vehicle accident. She was found alert and neurologically intact but she complained of slight tenderness at the base of the skull. A small occipital ecchymosis was noted. Examination On examination in the emergency room, a lateral cervical spine x-ray film ( Fig. 1 left ) and subsequent

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Calcified herniated thoracic disc diagnosed by computerized tomography

Case report

M. Seth Hochman, Constantino Pena, and Raul Ramirez

herniation who had no neurological findings referable to the extruded disc. In this patient, the diagnosis could be established with computerized tomography (CT) of the spine which, to our knowledge, has not been previously described. Case Report This 65-year-old woman had a 10-year history of Parkinson's disease and hyperaldosteronism, and osteoporosis. History . At the age of 25 years she underwent a series of three spinal operations for lumbar disc herniation. At age 63 years, in 1977, she developed severe pain in the left posterior and lateral thorax, which she

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Intermittent exophthalmos studied with computerized tomography

Report of two cases

Juan J. Rivas, Ramiro D. Lobato, Francisco Cordobés, Alejandro Barcena, and José M. Millán

maneuver. 3, 6, 9, 10, 18, 19, 27 We are reporting the cases of two patients suffering from intermittent exophthalmos, who were recently studied by us with the aid of computerized tomography (CT). To our knowledge, these are the first two reported cases of intermittent proptosis studied with this technique. Case Reports Case 1 This 32-year-old man had been suffering for 13 years from intermittent proptosis of the left eye caused by bending the head, compression of the neck, and Valsalva maneuvers. The initial onset of this symptom was related to a fragment of

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Computerized tomography of a sellar spine

Case report

David L. LaMasters, James E. Boggan, and Charles B. Wilson

T he sellar spine has been described only recently. It is apparently so rare that no reference to this anomaly is included in standard anatomic and radiographic texts. 3, 7, 10, 11 Previous case studies have documented the characteristics of the sellar spine, 2, 5 but a deformation of the pituitary gland associated with this entity has not been reported. We describe both the sellar spine and the associated changes in the gland as they appeared on computerized tomography (CT) scans of a patient who had a presumed diagnosis of pituitary adenoma. Case

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Computerized tomography findings in dural arteriovenous malformations

Report of three cases

Kazuo Miyasaka, Hidetoshi Takei, Mikio Nomura, Sinji Sugimoto, Toshimitsu Aida, Hiroshi Abe, and Mitsuo Tsuru

blood by the arteriovenous shunt may be responsible for focal neurological signs. Retrograde venous drainage into the cortical venous system, which has been not infrequently demonstrated by angiography, 5, 12, 16 may cause subarachnoid hemorrhage or focal neurological signs. However, its effect on the brain parenchyma has not been clear. Computerized tomography (CT) now makes it possible to delineate such changes in brain parenchyma and cerebrospinal fluid (CSF) spaces as edema, infarction, vascular engorgement, and hydrocephalus. Several authors have pointed out

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Hemostasis and computerized tomography in head injury

Their relationship to clinical features

J. Jaap van der Sande, Jan J. Veltkamp, Ria J. Boekhout-Mussert, and G. Jan Vielvoye

reflect the amount of brain tissue destroyed. Recently, morphological evidence of intravascular coagulation was reported after minor experimental head injury in rats. 22 Since the introduction of computerized tomography (CT), some correlation has been found between clinical signs and CT scan abnormalities in patients with head injury. 7, 12, 15, 25 However, prediction of outcome on the basis of CT findings alone is not possible. 12, 19 In the present study, a comparison was made between CT findings, coagulation abnormalities, and clinical features in patients with