A 74-year-old man was treated with ceftriaxone for 5 days and subsequently experienced epigastric pain. Computed tomography (CT) was performed 7 and 3 days before epigastralgia. Although the first CT image revealed no radiographic signs in his biliary system, the second CT image revealed dense radiopaque material in the gallbladder lumen. The third CT image, taken at symptom onset, showed high ...

BACKGROUND Adolescent idiopathic scoliosis (AIS) may lead to physical and mental problems. It also can adversely affect patient satisfaction and the quality of life. In this study, we assessed the outcomes and satisfaction rate after surgical treatment of AIS using scoliosis research society-30 questionnaire (SRS-30). METHODS We enrolled 135 patients with AIS undergoing corrective surgery. Pa...

Local injection of glucocorticosteroid (GCS) is an effective treatment of painful conditions in the temporomandibular joint (TMJ). GCS can be administered using anatomical landmarks for orientation or by the use of simultaneous radiographic imaging. In the image guided technique the corticosteroid is mixed with a contrast medium and the injection visualized using radiography. The aim of this pr...

A novel radiographic imaging system based on a liquid crystal light valve is described. A liquid crystal light valve is a photon addressed spatial light modulator that consists of a high resolution, solid-state electrostatic detector (photoconductor) and an electro-optic light modulator (liquid crystal cell) physically coupled in a sandwich structure. We propose a light valve with a thick, x-ra...

The “strange phenomenon”, discovered by Wilhelm Conrad Röntgen in the nineteenth century, that sensitized barium platinocyanide plates at the time of their studies on cathode rays in the gas tube, were called Ray X. The discovery of these new rays with singular characteristics gave greater clinical and practical insight into dentistry. This new form of energy gave rise to imaging obtained from ...

At present, image processing concepts are widely used in different fields, such as remote sensing, communication, medical imaging, forensics and industrial inspection. Image segmentation is one of the key processes in image processing key stages. Segmentation is a process of extracting various features of the image which can be merged or split to build the object of interest, on which image ana...

UNLABELLED To evaluate the performance of three digital devices regarding the noise added to digital radiographic images containing different optical densities. METHODS A radiographic image was digitized repeatedly ten times using two scanners (HP 4c/T and HP 5370C) and a digital camera (Nikon 990). A histogram tool measured a mean pixel value and the standard deviation of the region of inter...