Background: Traumatic brain injury (TBI) is a common problem caused by multiple traumas. The TBI patients are clinically evaluated with Glasgow Coma Scale (GCS) as well as imaging methods including computed tomography (CT) scan and magnetic resonance imaging (MRI). According to the GCS scores, patient are divided into three groups: mild (13-15), moderate (9-12) and severe (3-8). This study aims...

Objective(s): In this study, we aimed to describe the characteristics of portal vein tumor thrombosis (PVTT), complicating hepatocellular carcinoma (HCC) in contrast-enhanced FDG PET/CT scan. Methods: In this retrospective study, 9 HCC patients with FDG-avid PVTT were diagnosed by contrast-enhanced fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT), which is a comb...

BACKGROUND AND PURPOSE Radiation dose in temporal bone CT imaging can be high due to the requirement of high spatial resolution. In this study, we assessed whether CT imaging of the temporal bone by using an ultra-high-resolution scan mode combined with iterative reconstruction provides higher spatial resolution and lower image noise than a z-axis ultra-high-resolution mode. MATERIALS AND MET...

Objective A subset of patients with sinonasal disease who obtain a diagnostic computed tomography (CT) sinus scan may require repeat preoperative CT due to the inadequacy of diagnostic CT for image-guided sinus surgery (IGSS). This leads to increased CT utilization, health care costs, and patient exposure to ionizing radiation. The objective of this study is to determine the frequencies of diag...

background paranasal sinus ct has high sensitivity and specificity for sinusitis. however, this modality is costly and involves greater radiation exposure than plain radiographs. objectives we tried to compare 10-cut limited ct scan and standard ct scan in the diagnosis of sinusitis. materials and methods we conducted a cross sectional case series from august to december 2010 on 150 patients wi...

OBJECTIVE The purpose of this study was to evaluate the accuracy of CT angiography with volume rendering for quantifying vascular stenoses in vitro. MATERIALS AND METHODS Vascular models with three degrees of stenosis (33%, 67%, and 83%) were imaged at three orientations to the axial plane (parallel, perpendicular, or 45 degrees ) using helical CT with 2-mm collimation and two pitches (1 or 2...

OBJECTIVE To characterize the appearance of the normal vestibular aqueduct on coronal computed tomography (CT). DESIGN Retrospective evaluation of routine CT images of the temporal bones. SETTING Private tertiary care center. PATIENTS Twenty-four children and young adults (14 females and 10 males), aged 2 to 24 years (average age, 10 years). MAIN OUTCOMES MEASURES Axial CT images were e...

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...

The aim was to evaluate the adaptation of CAD/CAM occlusal veneer with different cement space settings using micro CT scan. Three groups IPS e.max-CAD lithium disilicate veneers (30, 40, and 50 µm) were produced. A circle 20 diameters centered at center same image position every scanned specimen scan measure four locations [Occlusal (OCG), axial (AXG), Marginal (MAG), absolute marginal discrepa...

OBJECTIVES AND METHODS Large intracranial calcifications are occasionally encountered in routine computed tomography (CT) scans of the brain. These calcifications, also known as "brain stones", can be classified according to location and aetiology. Combining imaging findings with relevant clinical history and physical examination can help narrow down the differential diagnosis and may allow con...