Low-dose non-contrast examination of the temporal bone using volumetric 320-row computed tomography.

Low-dose non-contrast examination of the temporal bone using volumetric 320-row computed tomography. Acta Radiol. 2018 Sep 24;:284185118802597 Authors: Pirimoglu B, Sade R, Sakat MS, Polat G, Kantarci M Abstract Background 320-row volume computed tomography (CT) allows CT dose to be reduced while maintaining image quality. Purpose To evaluate image quality of low-dose non-contrast temporal bone CT using single volumetric 320-row multidetector CT technique. Material and Methods A total of 125 patients were included in our study. Two low-dose protocols, including 135 kV tube voltage with 5 mAs tube current and 80 kV tube voltage with 5 mAs tube current, were chosen based on results of present phantom study. For evaluating subjective image quality, conspicuity of anatomic landmarks were assigned a score using a five-point scale. Objective image quality analysis was performed by analyzing regions of interest on axial soft-tissue and bone reconstructions. Effective dose was calculated from dose-length product. Results Mean effective radiation dose for 120 kV and 75 mAs protocol (control group) was 0.29 ± 0.04 mSv; for 135 kV and 5 mAs protocol (study group A), this value was 0.02 ± 0. 003 mSv; and for 80 kV and 5 mAs protocol (study group B), this value was 0.005 ± 0. 0009 mSv. Mean effective radiation doses of study group A and B were significantly lower than the control group ( P 
Source: Acta Radiologica - Category: Radiology Authors: Tags: Acta Radiol Source Type: research

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AbstractSummaryLumbar spine volumetric bone mineral density (BMD) measured using quantitative computed tomography (QCT) can discriminate between postmenopausal women with low areal BMD with and without vertebral fractures. QCT provides a 3D measure of BMD, excludes the vertebral posterior elements and accounts for bone size. This knowledge could contribute to effective treatment targeting of patients with low BMD.IntroductionWe evaluated the ability of lumbar spine bone mineral apparent density (BMAD), trabecular bone score (TBS) and volumetric bone mineral density (vBMD) to discriminate between postmenopausal women with l...
Source: Osteoporosis International - Category: Orthopaedics Source Type: research
INTRODUCTION: Edged weapons are a known domestic threat to the police forces of the UK. This threat is mitigated by wearing stab-resistant body armour that is either worn overtly or covertly depending on role. Although the UK military have traditionally fo...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Engineering, Physics, Structural Soundness and Failure Source Type: news
Condition:   Patellofemoral Dislocation Interventions:   Diagnostic Test: CT scan of the knee under weight-bearing with the Cone Beam Computed Tomography (CBCT) scanner system.;   Diagnostic Test: Conventional CT scan Sponsor:   Istituto Ortopedico Rizzoli Recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
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Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
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Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
A 58-year-old female patient with cholelithiasis was referred for abdominal ultrasonography in January 2017. The ultrasonography revealed a large left adrenal tumor. The size of the lesion was 65  × 47 mm. High-resolution computed tomography was then performed. It showed a well-circumscribed left adrenal mass (RECIST: 64 mm) with fat stranding. The radiation attenuation coefficient was 27 Hounsfield units. After intravenous administration of contrast media, the tumor showed slight enhan cement to 37 Hounsfield units, resulting from partition reinforcement.
Source: The American Journal of Medicine - Category: General Medicine Authors: Tags: Diagnostic Dilemma Source Type: research
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Source: Brain and Development - Category: Neurology Authors: Tags: Case Report Source Type: research
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