Radiology Research

02:29 EDT 21st October 2018 | BioPortfolio

Parafoveal Retinal Vessel Density Assessment by Optical Coherence Tomography Angiography in Healthy Eyes.

To assess variability in vessel density (VD) measurements across three optical coherence tomography angiography (OCTA) devices to identify a methodology that offers the least amount of variation in VD, and to assess the effect of averaging of multiple scans on VD variability.

Automated Quantification and Evaluation of Motion Artifact on Coronary CT Angiography Images.

This study developed and validated a Motion Artifact Quantification algorithm to automatically quantify the severity of motion artifacts on Coronary Computed Tomography Angiography (CCTA) images. The algorithm was then used to develop a Motion IQ Decision method to automatically identify whether a CCTA dataset is of sufficient diagnostic image quality or requires further correction.

UPLC-MS/MS determination of suvorexant in urine by a simplified dispersive liquid-liquid micro-extraction followed by ultrasound assisted back extraction from solidified floating organic droplets.

Suvorexant is a novel sedative/hypnotic drug approved for treatment of insomnia. It has significant forensic importance due to its hypnotic and depressant effects on central nervous system. In this study, a highly sensitive UPLC-MS/MS assay was developed and validated for the determination of suvorexant in urine sample. A simplified dispersive liquid-liquid microextraction followed by ultrasound a...

Intraoperative Shear Wave Elastography vs. Contrast-Enhanced Ultrasound for the Characterization and Differentiation of Focal Liver Lesions to Optimize Liver Tumor Surgery.

 Assessment of intraoperative quantitative shear wave elastography (SWE) and contrast-enhanced ultrasound (CEUS) for the characterization of focal liver lesions (FLLs) during liver surgery using postoperative histopathological results as the gold standard.

Carotid plaque composition and volume evaluated by multi-detector computed tomography angiography.

To evaluate the differences of plaquecomposition and volume between symptomatic and asymptomatic patients with carotid artery stenosis by multi-detector computed tomography angiography (MDCTA).

Impact of emergency physicians competent in severe trauma management, surgical techniques, and interventional radiology on trauma management.

Despite recent advancements in trauma management following introduction of interventional radiology (IVR) and damage-control strategies, challenges remain regarding optimal use of resources for severe trauma.

Successful management of cesarean scar pregnancy with vacuum extraction under ultrasound guidance.

Cesarean scar pregnancy (CSP) is a rare type of ectopic pregnancy. The gestational sac is implanted in the myometrium at the site of a previous cesarean section. Mothers with CSP are faced with risks of unpredictable massive bleeding or more fatal complications. The purpose of this retrospective study was to assess the feasibility, efficacy, and reliability of the intraoperative ultrasound-guided ...

Diurnal variation of choriocapillaris vessel flow density in normal subjects measured using optical coherence tomography angiography.

Vessel flow density (VFD) may provide important information regarding perfusion status. Diurnal variation in VFD of choriocapillaris has not been reported in literature. In the index study, optical coherence tomography angiography (OCTA) was used to assess the diurnal variation of the VFD in the choriocapillaris of subjects with no known ocular disease.

Video-rate all-optical ultrasound imaging.

All-optical ultrasound imaging, where ultrasound is generated and detected using light, has recently been demonstrated as a viable modality that is inherently insensitive to electromagnetic interference and exhibits wide bandwidths. High-quality 2D and 3D all-optical ultrasound images of tissues have previously been presented; however, to date, long acquisition times (ranging from minutes to hours...

"It is not what it seems." Ultrasound findings in a case of unusual iatrogenic ulnar nerve damage.

Principles of OCTA and Applications in Clinical Neurology.

The article reviews the recent findings on the use of optical coherence tomography angiography (OCTA) in neurology.

Comprehensive Word-Level Classification of Screening Mammography Reports Using a Neural Network Sequence Labeling Approach.

Radiology reports contain a large amount of potentially valuable unstructured data. Recently, neural networks have been employed to perform classification of radiology reports over a few classes at the document level. The success of neural networks in sequence-labeling problems such as named entity recognition and part of speech tagging suggests that they could be used to classify radiology report...

The cerebral-placental-uterine ratio as a novel predictor of late fetal growth restriction: a prospective cohort study.

Fetal growth restriction (FGR) is a major risk factor for stillbirth and most commonly arises from uteroplacental insufficiency. Despite clinical examination and third trimester fetal biometry, cases of FGR often remain undetected antenatally. Placental insufficiency is known to be associated with altered blood flow resistance in maternal, placental, and fetal vessels. We evaluated the performance...

Fetal diagnosis of a rare finding: right-sided cervical aortic arch with aberrant left subclavian artery and absent ductus arteriosus in tetralogy of fallot.

A cervical aortic arch (CAA), often described as an arch that is supraclavicular in nature, is an extremely rare entity with isolated case reports diagnosed postnatally. We describe the first prenatal diagnosis of a unique constellation of findings including right CAA with aberrant left subclavian artery (LSCA) in a patient with TOF and 22q11 deletion using fetal echocardiography. This article is ...

Incomplete Thyroid Ultrasound Reports for Patients With Thyroid Nodules: Implications Regarding Risk Assessment and Management.

The purpose of this study was to determine the completeness of thyroid ultrasound (US) reports, assess for differences in report interpretation by clinicians, and evaluate for implications in patient care.

Radiological Society of North America, Inc: Proposed Amendments to the RSNA Bylaws November, 2018.

Ultrasound-Guided Cannulation of the Subclavian Vein - An Update.

Comparison of Gleason upgrading rates in transrectal ultrasound systematic random biopsies versus US-MRI fusion biopsies for prostate cancer.

Ultrasound-magnetic resonance imaging (US-MRI) fusion biopsy (FB) improves the detection of clinically significant prostate cancer (PCa). We aimed to compare the Gleason upgrading (GU) rates and the concordance of the Gleason scores in the biopsy versus final pathology after surgery in patients who underwent transrectal ultrasound (TRUS) systematic random biopsies (SRB) versus US-MRI FB for PCa.

Will machine learning end the viability of radiology as a thriving medical specialty?

There have been tremendous advances in artificial intelligence and machine learning within the past decade, especially in the application of deep learning to various challenges. These include advanced competitive games (such as Chess and Go), self-driving cars, speech recognition, and intelligent personal assistants. Rapid advances in computer vision for recognition of objects in pictures have led...

Low performance of ultrasound surveillance for the diagnosis of hepatocellular carcinoma in HIV-infected patients.

To assess the performance of ultrasound (US) surveillance for the diagnosis of hepatocellular carcinoma (HCC) in HIV-infected patients.

Color Fundus Image Guided Artery-Vein Differentiation in Optical Coherence Tomography Angiography.

This study aimed to develop a method for automated artery-vein classification in optical coherence tomography angiography (OCTA), and to verify that differential artery-vein analysis can improve the sensitivity of OCTA detection and staging of diabetic retinopathy (DR).

Introduction to the Liver Imaging Reporting and Data System (LI-RADS) for hepatocellular carcinoma.

The Liver Imaging Reporting And Data System (LI-RADS) was created with the support of the American College of Radiology (ACR) to standardize the acquisition, interpretation, reporting and data collection for imaging examinations in patients at risk for hepatocellular carcinoma (HCC). A comprehensive and rigorous system developed by radiologists, hepatologists, pathologists, and surgeons, LI-RADS a...

Respiratory- and cardiac motion-corrected simultaneous whole-heart PET and dual phase coronary MR angiography.

To develop a framework for efficient and simultaneous acquisition of motion-compensated whole-heart coronary MR angiography (CMRA) and left ventricular function by MR and myocardial integrity by PET on a 3T PET-MR system.

Sonography : a future imaging modality for the general practitioner ?

Introduced at the end of the '50s, ultrasound has widely developed and spread since then. Not limited to morphological information, sonography more and more includes elements of functional imaging. The new technological developments of ultrasound, and the main fields of application of sonography are reviewed, as well as the management of the so-called ultrasound incidentaloma. The triangular relat...

Performance of Coronary Angiography and Intervention after Out of Hospital Cardiac Arrest.

Out of Hospital Cardiac Arrest (OHCA) is frequently attributed to coronary artery disease, thus guidelines recommend coronary angiography (CAG) for survivors of OHCA. However, the real-world application of these guidelines is unknown, and we sought to evaluate CAG practices in the contemporary OHCA population.

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