The Journal of computed tomography最新文献

A small calvarial eosinophilic granuloma is demonstrated with T₂ weighted magnetic resonance imaging.

The magnetic resonance findings in a patient with acquired partial lipodystrophy are described. Adipose tissue in a variety of locations, including the retroperitoneum and bone marrow, is well demonstrated by magnetic resonance in several anatomic planes. Magnetic resonance may provide complementary information to clinical findings in evaluation of patients with partial lipodystrophy.

Chondrosarcoma of the larynx is a rare lesion. Computed tomography was able to suggest this diagnosis preoperatively and aided in surgical planning by defining the extent of the mass in a 67-year-old man who presented with signs and symptoms of airway obstruction.

Isolated congenital macrodactyly, termed macrodystrophia lipomatosa, is a rare entity. It may be confused with plexiform neurofibroma, hemangioma, or lymphangioma. Computed tomography provides an ideal methodology to verify the fatty proliferation of soft tissue that accompanies bone overgowth and distinguishes this lesion from the others in the differential list.

^99mTc-HM-PAO was used to evaluate regional cerebral blood flow in a 26-year-old woman with Moyamoya disease. This patient had an 18-month history of recurrent neurologic deficits and had angiographic evidence of Moyamoya disease. She had used oral contraceptives and cigarettes, but had no other risk factors for stroke. Single photon emission computed tomographic images showed bilateral and asymmetric reductions in blood flow to anterior and lateral brain regions. These findings correlated better with clinical symptomatology and suggested more extensive brain involvement than did computed tomography.

Sixty-nine patients with nonpenetrating pulmonary trauma were studied by chest computed tomography (CT) within 24 hours of admission. The percentage of air-space filling was quantitated and compared with the requirement for ventilatory support. Pulmonary intraalveolar hemorrhage always is gravity dependent originating at the site of injury. Utilizing CT, the patients' pulmonary status was classified into three separate clinicoradiologic groups: Grade I injury (<18% air-space filling, no ventilator support required), Grade II injury (18–28% air-space filling, ventilator support sometimes required), and Grade III injury (>28 air-space filling, ventilator support always required). The CT quantitation correlated with clinical functional studies and was useful in the therapeutic management of nonpenetrating lung injury.

A case of spinal intradural metastasis from a carcinoid tumor is reported. The case is of interest due to the rarity of central nervous system involvement by these tumors and the long latency period of the patient's presentation.

A case of gliomatosis cerebri studied by computed tomography (CT) and magnetic resonance imaging (MRI) is reported. Follow-up by serial CT revealed a right parieto-occipital glioblastoma. Gliomatosis cerebri and multiform glioblastoma were demonstrated by histologic study. Anatomic and CT data were correlated. The role of CT and MRI in the diagnosis of this disease was evaluated and case studies of CT published in the literature were reviewed.

Occipital condyle fractures can be easily overlooked on plain radiographic examinations of the head and cervical spine. This is especially true if such a fracture is not clinically suspected, since they are very rare fractures. Two patients presented with suspected tumors of the foramen magnum region. Both had old trauma and undiagnosed old fractures of the occipital condyle.