Bone scintigraphy or whole-body bone scan is one of the most common diagnostic procedures in nuclear medicine. Since expert physicians evaluate images manually some automated procedure for pathology detection is desired. A robust knowledge based methodology for segmenting body scans into the main skeletal regions is presented. The algorithm is simultaneously applied on anterior and posterior wh...

UNLABELLED The purpose of this study was to describe the clinical presentation of bone metastases in patients with carcinoid tumors and to determine the diagnostic value of imaging techniques and markers of bone metabolism. METHODS This retrospective study was performed on the entire group of patients with carcinoid tumors treated in our hospital from January 1992 to May 1999. Only patients w...

UNLABELLED (99m)Tc-labeled red blood cell scintigraphy is a powerful detection and localization tool that may be confounded by false-positive and false-negative findings. Subtraction scintigraphy has been used in the evaluation of acute lower gastrointestinal tract hemorrhage (LGIH) to reduce the impact of interpretive confounders. The aim of this investigation was to evaluate the cost-effectiv...

Langerhans cell histiocytosis (LCH) is a rare benign disorder of unknown etiology with an estimated incidence of 4 to 5 cases per 100,000 persons per year. LCH can involve almost all parts of the body; however, sever extensive bone involvement is rare. The purpose of this report was to describe the case of a 4-year-old boy who presented with a history of a 2-month old fall injury. Physical exam...