objective(s): bonenavi, a computer-aided diagnostic system, is used in bone scintigraphy. this system provides the artificial neural network (ann) and bone scan index (bsi) values. ann is associated with the possibility of bone metastasis, while bsi is related to the amount of bone metastasis. the degree of uptake on bone scintigraphy can be affected by the type of bone metastasis. therefore, t...

INTRODUCTION The aim of this study was to assess the relationship of chronological age with cervical vertebrae skeletal maturation, frontal sinus width and antegonial notch depth and a correlation, if any, among the three variables. MATERIALS AND METHODS The samples were derived from lateral cephalometric radiographs of 80 subjects (40 males, 40 females; age range: 10 to 19 years). Cervical v...

background: the advances in treatment regimes for thalassemic patients have increased the survival among them therefore osteoporosis has emerged as an important cause of morbidity. the aim of this study was to determine the prevalence of osteoporosis and osteopenia in patients with thalassemia from zafar adult thalassemia clinic, tehran, iran. patients and methods: in this cross sectional inves...

Objective: To develop a nomogram for predicting bone development state (BDS) of female children and adolescents in large scale. Methods: Four hundred forty-seven students were designated as the training cohort to predictive model, whereas 196 used validation verify established model. Bone age, height, body mass, fat percentage, secondary sexual characteristics recorded, BDS was determined with ...

background different clinical and epidemiological studies using dual-energy x-ray absorptiometry have shown an increased prevalence of low bone mineral density in patients with inflammatory bowel diseases.the aim of this study was to assess the correlation between bone density and the disease activity in patients with ulcerative colitis. methods in this cross-sectional study, 52 patients with u...

Background: Osteoporosis and osteopenia are the most common metabolic bone diseases making the patients vulnerable to bone fragility and fracture. In this study, the association of opium consumption and osteoporosis adjusted for other risk factors was studied.Methods: In this cross-sectional study, 619 cases including 73 men and 546 women referred to densitometry center in Kerman, Iran, were st...

Background: One of the most significant factors in the success of dental implant procedures, can be mentioned by the quality and quantity of jaw bone. The occurrence of some problems such as trauma, infection, pathological lesions and the long-term absence of teeth in patients, it causes irregularities in the jaw bone and can get bone resorption. Sever defects after trauma or tumor resection ne...

To evaluate the developmental status of children and adolescents, a bone-age chart based on the radiograph of hand and wrist has been used in many countries. Bone-age reflects not only the functional status of various hormones but also the influence of chronic disease and it has been used more widely than other indices such as the height-weight-age table. As a standard bone-age chart has not be...

The main bone age assessment methods are the Greulich-Pyle and Tanner-Whitehouse 2 methods, both of which involve left hand and wrist radiographs. Several other bone age assessment methods have been developed, including ultrasonographic, computerized, and magnetic resonance (MR) imaging methods. The ultrasonographic method appears unreliable in children with delayed and advanced bone age. MR im...

background: fetal nasal bone assessment is a non-invasive procedure that helps provide even greater assurance to patients undergoing their first trimester risk assessment for aneuploidies. absence or presence of this factor is different in some races. objective: the study was aimed to evaluate nasal bone in the first trimester of pregnancy in the indigenous population of khuzestan province, and...