Unenhanced helical computed tomography for suspected urinary tract stones: Current state of the art

1998 ◽  
Vol 5 (2) ◽  
pp. 97-102 ◽  
Author(s):  
Jill M. Dobbins ◽  
Patrick M. Rao ◽  
Robert A. Novelline ◽  
Jeffrey A. Bush
Keyword(s):  
Computed Tomography ◽  
Urinary Tract ◽  
State Of The Art ◽  
Helical Computed Tomography ◽  
Current State ◽  
Urinary Tract Stones

Helical computed tomography of urinary tract stones: Accuracy and diagnostic value of stone size and density measurements

1997 ◽  
Vol 4 (5) ◽  
pp. 303-308 ◽  
Author(s):  
Jill M. Dobbins ◽  
Robert A. Novelline ◽  
James T. Rhea ◽  
Patrick M. Rao ◽  
Edwin L. Prien ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Urinary Tract ◽  
Diagnostic Value ◽  
Helical Computed Tomography ◽  
Stone Size ◽  
Density Measurements ◽  
Urinary Tract Stones

scholarly journals Cardiovascular risk stratification by coronary computed tomography angiography imaging: current state-of-the-art

2021 ◽  
Author(s):  
Alexios S Antonopoulos ◽  
Andreas Angelopoulos ◽  
Konstantinos Tsioufis ◽  
Charalambos Antoniades ◽  
Dimitris Tousoulis
Keyword(s):  
Computed Tomography ◽  
Cardiovascular Risk ◽  
Risk Stratification ◽  
Computed Tomography Angiography ◽  
Coronary Computed Tomography Angiography ◽  
State Of The Art ◽  
Plaque Burden ◽  
Coronary Computed Tomography ◽  
Cardiovascular Risk Stratification ◽  
Current State

Abstract Current cardiovascular risk stratification by use of clinical risk score systems or plasma biomarkers is good but less than satisfactory in identifying patients at residual risk for coronary events. Recent clinical evidence puts now further emphasis on the role of coronary anatomy assessment by coronary computed tomography angiography (CCTA) for the management of patients with stable ischaemic heart disease. Available computed tomography (CT) technology allows the quantification of plaque burden, identification of high-risk plaques, or the functional assessment of coronary lesions for ischaemia detection and revascularization for refractory angina symptoms. The current CT armamentum is also further enhanced by perivascular Fat Attenuation Index (FAI), a non-invasive metric of coronary inflammation, which allows for the first time the direct quantification of the residual vascular inflammatory burden. Machine learning and radiomic features’ extraction and spectral CT for tissue characterization are also expected to maximize the diagnostic and prognostic yield of CCTA. The combination of anatomical, functional, and biological information on coronary circulation by CCTA offers a unique toolkit for the risk stratification of patients, and patient selection for targeted aggressive prevention strategies. We hereby provide a review of the current state-of-the art in the field and discuss how integrating the full capacities of CCTA into clinical care pathways opens new opportunities for the tailored management of coronary artery disease.

A Virtual-Reality, 360-Degree Fly-Through of an Arteriovenous Malformation Resection: 2-Dimensional Operative Video

2019 ◽  
Vol 18 (1) ◽  
pp. E11-E11 ◽  
Author(s):  
Jeremy Steinberger ◽  
Dominic Nistal ◽  
Leslie Schlachter ◽  
Anthony Costa ◽  
Holly Oemke ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Virtual Reality ◽  
Magnetic Resonance ◽  
Arteriovenous Malformation ◽  
Situational Awareness ◽  
State Of The Art ◽  
Venous Drainage ◽  
Clonic Seizure ◽  
Current State ◽  
A Current

Abstract The application of navigation integrated virtual reality (VR) in neurosurgery is an emerging paradigm that may offer improved situational awareness for the surgeon. Here, we present a case of a complex arteriovenous malformation (AVM) with complex venous drainage and observe how VR impacted structural delineation during approach, resection, and overall strategic planning. The patient was a 30-yr-old female with no past medical history who presented with headaches and a generalized tonic clonic seizure. Workup included computed tomography, computed tomography angiography, magnetic resonance imaging, magnetic resonance angiography, and magnetic resonance venography; a high flow right frontal AVM was found. The AVM was safely resected using navigation integrated with VR; careful arterial devascularization preceded resection of the draining veins and then the AVM nidus. Postoperative scans confirmed complete resection of the AVM. This case outlines the application of a current state-of-the-art VR platform to assist the craniotomy for resection of an AVM.

Radiologic evaluation in patients with upper urinary tract stones – ultrasonography vs. computed tomography

2003 ◽  
Vol 60 (2) ◽  
pp. 73-78 ◽  
Author(s):  
Thoeny ◽  
Tuma ◽  
Hess
Keyword(s):  
Computed Tomography ◽  
Urinary Tract ◽  
Upper Urinary Tract ◽  
Diagnostische Verfahren ◽  
Radiologic Evaluation ◽  
Urinary Tract Stones

Die Auswahl des bildgebenden Verfahrens zum Nachweis von Konkrementen in den oberen Harnwegen richtet sich primär nach der klinischen Fragestellung. Die zwei wichtigsten klinischen Fragestellungen sind: 1) Suche nach Ureterdilatation/Obstruktion und allfälligem perinephrischem Abszess bei akuten Flankenschmerzen; und 2) Feststellung der genauen Lokalisation, Anzahl und Größe von Konkrementen. Bei akuten Flankenschmerzen ist die weitherum verfügbare Sonographie zum Nachweis eines dilatierten Nierenbeckenkelchsystems in den Händen geübter Untersucher der Computertomographie heute ebenbürtig. Allerdings kann sogar eine totale Obstruktion in den ersten 12–24 Stunden dem sonographischen Nachweis vollständig entgehen. Die Sonographie eignet sich zudem gut zur Verlaufskontrolle bei Obstruktion der ableitenden Harnwege und ist außerdem Methode der Wahl für Kinder und schwangere Frauen. Steht hingegen der präzise Steinnachweis im Vordergrund der klinischen Fragestellung, ist die Nativ-Computertomogragphie (CT) der Sonographie eindeutig überlegen. Auch im Vergleich zum konventionellen Abklärungsgang mit Abdomen-leer-Aufnahme und intravenöser Urographie ist die CT weniger strahlenbelastend, hat eine höhere Treffsicherheit und ist zudem schneller. Die CT ist überdies das beste diagnostische Verfahren für den Nachweis allfälliger anderer wichtiger intraabdominaler Pathologien.

Behavioral Genetics: Concepts for Research and Practice in Language Development and Disorders

1995 ◽  
Vol 38 (5) ◽  
pp. 1126-1142 ◽  
Author(s):  
Jeffrey W. Gilger
Keyword(s):  
Language Development ◽  
Behavioral Genetics ◽  
State Of The Art ◽  
Genetic Research ◽  
Great Promise ◽  
Behavioral Genetic ◽  
Fine Grained ◽  
Future Goals ◽  
Current State ◽  
Research Designs

This paper is an introduction to behavioral genetics for researchers and practioners in language development and disorders. The specific aims are to illustrate some essential concepts and to show how behavioral genetic research can be applied to the language sciences. Past genetic research on language-related traits has tended to focus on simple etiology (i.e., the heritability or familiality of language skills). The current state of the art, however, suggests that great promise lies in addressing more complex questions through behavioral genetic paradigms. In terms of future goals it is suggested that: (a) more behavioral genetic work of all types should be done—including replications and expansions of preliminary studies already in print; (b) work should focus on fine-grained, theory-based phenotypes with research designs that can address complex questions in language development; and (c) work in this area should utilize a variety of samples and methods (e.g., twin and family samples, heritability and segregation analyses, linkage and association tests, etc.).

Sign in / Sign up

Export Citation Format

Share Document