introduction: using pan or selective computed tomography (ct) scan in management of multiple trauma patient is a matter of debate. therefore, the present study was designed aiming to compare the findings of pan and selective ct scans in management of multiple trauma patients. method: this is a prospective cross-sectional study, on patients presented to the emergency department (ed) of shohadaye...

We present a new, fully automatic algorithm for liver tumors segmentation in follow-up CT studies. The inputs are a baseline CT scan and a delineation of the tumors in it and a follow-up scan; the outputs are the tumors delineations in the follow-up CT scan. The algorithm consists of four steps: 1) deformable registration of the baseline scan and tumors delineations to the followup CT scan; 2) ...

Introduction: Geometric distortion, an important parameter in neurology and oncology. The current study aimed to design and construct a new three-dimensional (3D) phantom using a 3D printer in order to measure geometric distortion and its 3D reproducibility. Material and Methods: In this study, a new phantom ...

Hepatosplenic candidiasis is a fungal infection, which mostly affects patientswith hematologic malignancies such as leukemia. The pathogenesis of thisinfection is not clear yet, and the liver is the most commonly affected organ.Diagnosis of hepatosplenic candidiasis can be only established via biopsy,since computed tomography (CT) scan, ultrasonography, and magneticresonance imaging (MRI) yield...

introduction trauma is the most common cause of death in youngsters. early detection of internal bleeding via imaging in trauma patients is important. the fast-extended method and the extended focused assessment with sonography for trauma (efast) evaluates hemothorax and pneumothorax in addition to abdominopelvic bleedings and tamponade. patients and methods in this cross-sectional study, after...

STUDY OBJECTIVE The purpose of this study was to compare the imaging findings of nontuberculous mycobacterial (NTM) infection in patients with normal and abnormal cystic fibrosis (CF) genotypes, and normal and abnormal alpha1-antitrypsin (AAT) phenotypes. DESIGN A retrospective review of medical records and chest CT scans from 85 patients with microbiologically proven NTM infection was perfor...

Introduction: Computed tomography (CT) consists of 11% of all imaging methods, but accounts for approximately 67% of radiation exposure due to diagnostic cases. More than one-third of all CT scans are done in the head and neck area. The thyroid gland is irradiated during CT head and neck. According to studies, this gland has the highest levels of radiation-induced cancer, and i...

a 55 year-old man was referred with periumbilical and colicky abdominal painøœ cutaneous lesionsøœ palpable purpura in extremities and 10 kg weight loss. a 5×5 cm cavitary mass lesion was seen in the lower lobe of right lung in cxr. pansinusitis in paranasal ct scan was reported. intramural hemorrhage in ileum and jejunum in abdominal ct scan was noted. esr was ›100 and c-ancawas positive.micro...

PURPOSE To assess the accuracy of three-dimensional models of the human temporal bone generated from CT data. METHODS Thin-section CT of a left human cadaveric temporal bone was performed using multiple-scan planes (axial, coronal, and sagittal) at 1.5-mm section thickness and 0.25-mm pixel size with an edge-enhancement two-dimensional algorithm. CT data were converted to toggle point format ...

b-cell lymphoblastic lymphoma (b-lbl) is an uncommon subtype of pediatric non-hodgkin lymphoma (nhl) which rarely involves the skin primarily. the positron emission tomography with 2-deoxy-2-[fluorine- 18] fluoro-d: -glucose integrated with computed tomography (18f-fdg pet/ct) scan findings of a 8-year-old boy with cutaneous b-lbl were presented. pet/ct scan demonstrated mild fdg uptake in the ...