background: ct scan and nuclear medicine exams deliver a great part of medical exposures. this study examined professional radiation hazards in ct scan and nuclear medicine workers.   methods : in a cross sectional study 30 occupationally exposed workers and 7 controls (all from personnel of a laboratory) were selected. physical dosimetry was performed for exposed workers. blood samples were ob...

This paper aims to use a new technique of computed tomography (CT) scan image processing correlate the analysis with sinonasal symptoms. A retrospective cross-sectional study is conducted by analyzing digital records 50 patients who attended ear, nose and throat (ENT) clinics at King Abdullah University Hospital, Jordan. The coronal plane CT scans are analyzed using our developed software. purp...

Department of Radiology, Hallym University Sacred Heart Hospital, Anyang, Korea Department of Pathology, Hallym University Sacred Heart Hospital, Anyang, Korea Department of Surgery, Hallym University Sacred Heart Hospital, Anyang, Korea Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine Received December 23, 2008 ; Accepted February 6, 2009 Address repr...

objectives: presence/absence of cervical lymph node metastasis plays a critical role in prognosis and survival of patients with oral squamous cell carcinoma (scc). this study was designed to assess the diagnostic accuracy of computed tomography (ct) scan for detection of cervical lymph node metastasis in oral scc in comparison with histopathological analysis after neck dissection methods: in th...

A detailed analysis of the coronal anatomic and CT appearances of the orbital apex is presented. In cadavers, coronal CT 9800 scans of the orbital apex and precisely corresponding cryomicrotomic sections were obtained. The CT appearance of the optic nerve, anulus of Zinn, and cranial nerves III-VI at the superior orbital fissure and orbital apex were determined. These anatomic structures were a...

purpose: to report a case of cloverleaf skull syndrome with cleft palate. results: we report a 20-day-old boy with cloverleaf-shaped skull deformity, very constricted cranium and prominent temporal bones associated with severe proptosis, maked lid retraction, conjunctival chemosis, exposure keratitis, corneal opacity and cleft palate. ct-scan dislosed fusion of the coronal, sagittal and lambdoi...

Background and Aim: The purpose of this study was to evaluate residual dentin thickness of the root and the area of the canal lumen in the coronal region of the mesiobuccal and mesiolingual canals of the lower first molars after canal preparation with the common method of using hand files and Gates Glidden drills or ProTaper rotary files, by Spiral Ct-Scan. Materials and Methods: In this exp...