Photoacoustic tomography (PAT) is applied to image the brain cortex of a monkey through the intact scalp and skull ex vivo. The reconstructed PAT image shows the major blood vessels on the monkey brain cortex. For comparison, the brain cortex is imaged without the scalp, and then imaged again without the scalp and skull. Ultrasound attenuation through the skull is also measured at various incid...

The efficacy of the posteroanterior and lateral ScoutView images with an abbreviated (every other cut) computed tomographic (CT) examination for skull fractures and associated intracranial trauma was analyzed. The every-other-slice CT study found all the brain injuries detected by the complete CT study. In addition, 20 of 21 skull fractures were identified on the posteroanterior and lateral Sco...

Previous work has demonstrated that electrical impedance tomography can be used to image human brain activity during evoked responses, but two-thirds of the reconstructed images fail to localize an impedance change to the expected stimulated cortical area. The localization failure may be caused by modelling the head as a homogenous sphere in the reconstruction algorithm. This assumption may lea...

Extra medullary plasmacytomas occurring as solitary (primary) tumours or secondary manifestations of multiple myeloma most often involve the upper airways and paranasal sinuses. The skull is one of the rarest sites of extra medullary plasmacytoma. Myelomatous deposits in dural reflections distant from the bony skull, i.e. tentorium and falx, are rarer, and probably result from dissection along ...

Gangliogliomas represent only 0.4% of central nervous system neoplasms and 1.3% of brain tumors. They are benign neoplasms with low morbidity and mortality and the patients usually present with seizures, but there has been no adult ganglioglioma with lytic skull lesion. A 49-year-old right handed woman suffering from generalized epileptic seizures was admitted to our hospital. She had also left...

we report 127 cases who have had elective operation on cranium because of skull bone defect during 1984-1989. usually repair of skull bone defect and preserving normal anatomy were the major therapeutic goals. 10, ii in these cases a new surgical technique is described which can successfully accomplish these goals in a single but staged operative procedure.

introduction: epidermoid tumors comprise 1% of intracranial tumors. although reported, intraosseous epidermoid tumors are even more rare. cystic lesions of the petrous apex are uncommon and surgically challenging; the most rare pathology is presumed to be epidermoid.rncase presentation: this is a case of a 61-year-old woman with a large skull-base tumor extending inferiorly from the c1-c2 artic...

aneurysmal bone cyst (abc) is an expansile bone lesion that usually involves the long bones. skull base involvement is rare. hereby, we describe a 17-year-old man with hoarseness, facial asymmetry, left sided sensorineural hearing loss and left jugular foramen syndrome. ct scan and mri showed a skull base mass that was confirmed as abc in histopathology. the case was unusual and interesting due...

introduction: ewing’s sarcoma is the second most common primary malignant tumor of bone found in children after osteosarcoma. it accounts for 4–9% of primary malignant bone tumors and it affects bones of the skull or face in only 1–4% of cases. hence it rarely affects the head and neck. subject and method: in this case report, we describe a case of primary ewing's sarcoma occurring in the tempo...