A 43-year-old female presented with persistent headache and dizziness which had first occurred two years earlier. The physical and neurological findings at admission were unremarkable, though plain radiography revealed the presence of a dense calcified mass in the left frontal area, and CT showed that a homogeneous high-density nodule was attached to the inner surface of the left frontal skull....

Lissencephaly ("smooth brain") or agyria is a rare congenital malformation resulting from an arrest of the development of the human brain during the third to fourth month of gestation [1]. Before this stage of fetal cerebral development, the absence of gyri is normal [2]. The radiologic findings on plain skull radiography, pneumoencephalography, cerebral arteriography, and , more recently, cran...

Brain foreign bodies and penetrating missile injuries of the brain are familiar topics for Iranian physicians, especially after Iran and Iraq war. But it’s not easily plausible that there is a couple of sewing needles in the cranium of a patient who has not any history of head trauma or penetrating injury. The patient was a 42-year-old man who admitted in neurology ward of Mottahari Hospital in...

The goal of this study was to establish local diagnostic reference levels (LDRLs) for conventional radiography examinations in Sistan-Baluchestan province of Iran, using dose area product (DAP) measurements followed by a comparison with international dose levels. DAP factor evaluation was carried out at eight radiography rooms in six public and one private health-care centers. The study employe...

A 4-month-old intact female English Springer Spaniel presented to the University of Georgia Veterinary Teaching Hospital for evaluation of unilateral, progressive exophthalmos oculus sinister (OS) of 2 weeks' duration. Complete ophthalmic examination revealed moderate OS exophthalmos and lateral globe deviation. No other abnormalities were noted on physical or ophthalmic examination, ocular ult...

Background Increasing the x-ray film to focus distance (FFD), has been recommended as a practical dose optimization tool for patients undergoing conventional radiological procedures. In the previous study, we demonstrated a 32% reduction in absorbed dose is achievable due to increasing the FFD from 100 to 130 cm during pediatric chest radiography. The aim of this study was to examine whether in...

PURPOSE To develop an experimental model to study and radiologically monitor displacement of skin flaps in the pericranium of rats subjected to traction and surgical fixation using suture anchored in a skull bone tunnel or with N-butyl-2-cyanoacrylate (Histoacryl™) surgical adhesive. METHODS Radiological markers were placed in the subcutis of Wistar rats undergoing subperiosteal detachment of...

Herein the author presents a case of esthesioneuroblastoma, a rare malignancy affecting the sinonasal cavity. This uncommon lesion is thought to originate from the olfactory neuroepithelium. The mass may invade the orbit and intracranial space, and may metastasize to the neck or to distant sites. This case was successfully treated with an endoscopic craniofacial resection, multilayer skull base...