Diagnostic and interventional imaging
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Diagn Interv Imaging · Apr 2017
Randomized Controlled Trial Comparative StudyPreoperative embolization of meningiomas with polyvinyl alcohol particles: The benefits are not outweighed by risks.
The purpose of this study was to define the feasibility, the efficacy and the safety of preoperative embolization (POE) of meningiomas using polyvinyl alcohol (PVA) particles. ⋯ POE of meningiomas using PVA particles is effective in reducing surgical time, when extensive tumor devascularization is achieved. However, radiation exposure, the duration of procedures and complications related to POE with PVA particles do not justify this technique in most patients.
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Diagn Interv Imaging · Mar 2017
Comparative StudyPreoperative grading of supratentorial gliomas using high or standard b-value diffusion-weighted MR imaging at 3T.
The goal of this study was to compare diffusion-weighted magnetic resonance imaging (DW-MRI) using high b-value (b=3000s/mm2) to DW-MRI using standard b-value (b=1000s/mm2) in the preoperative grading of supratentorial gliomas. ⋯ ADC parameters derived from DW-MRI using a high b-value allows a better differential diagnosis of gliomas, especially for differentiating grades III and IV, than those derived from DW-MRI using a standard b-value.
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Lung cancer screening by low-dose computed tomography (CT) has been proven to reduce lung cancer-related mortality by 20%, in the National Lung cancer Screening Trial (NLST). Low-dose CT acquisition protocols should result in effective dose not exceeding 1.5mSv, and should be read by radiologists who have an expertise in the field. ⋯ The major harm of screening is overdiagnosis, which correspond to the detection of indolent tumours that would not cause the subject death. Ongoing research for the development of useful biomarkers to be combined to imaging could improve the accuracy of lung cancer screening.
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Diagn Interv Imaging · Jul 2016
Pelvic, acetabular and hip fractures: What the surgeon should expect from the radiologist.
Pelvic ring fractures when caused by trauma, either violent or in demineralized bone, generally consist of injuries in both the anterior (pubic symphysis and rami) and posterior (iliac wing, sacrum, sacroiliac joint) portions. Injury classifications are based on injury mechanism and pelvic stability, and are used to determine treatment. ⋯ The fractures are categorized by anatomic location (neck, trochanter and subtrochanteric region) and degree of displacement. These variables determine the risk of osteonecrosis of the femoral head, which is the main complication of such fractures.