Methodology of ECG Interpretation in the Louvain Program

1990 ◽  
Vol 29 (04) ◽  
pp. 403-409 ◽  
Author(s):  
C. R. Brohet ◽  
C. Derwael ◽  
A. Robert ◽  
R. Fesler
Keyword(s):  
Quantitative Analysis ◽  
High Resolution ◽  
Clinical Utility ◽  
Visual Analysis ◽  
Diagnostic Classification ◽  
Computer Assisted ◽  
Reference Standard ◽  
Independent Evidence ◽  
Ecg Analysis ◽  
Ecg Interpretation

AbstractThe Louvain program performs the analysis and interpretation of the vectorcardiogram (VCG) to increase the clinical utility of ECG analysis. Among its original features, there are (1) a high-resolution vector-loop display for visual analysis, (2) quantitative analysis of the spatial VCG using age-sex stratified limits, (3) separate software for adult and pediatric series and (4) complementary deterministic and statistical methods of diagnostic classification. Using objective, ECG-independent evidence as a reference standard, the Louvain program has shown satisfactory levels of diagnostic accuracy in most basic categories. However, its usefulness is especially marked in “borderline” or “complex” situations, where the 12-lead ECG cannot provide a clear answer. It corresponds to the concept of “computer-assisted ECG interpretation” as opposed to “computer ECG analysis”.

FDG PET/CT in cancer therapy monitoring

2011 ◽  
Vol 50 (02) ◽  
pp. 83-92 ◽  
Author(s):  
S. Renisch ◽  
R. Opfer ◽  
T. Derlin ◽  
R. Buchert ◽  
I. C. Carlsen ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Cancer Therapy ◽  
Fdg Pet ◽  
Visual Analysis ◽  
Therapy Monitoring ◽  
Software Tool ◽  
Computer Assisted ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
Assisted Analysis

SummaryObjectives: We developed and tested a software tool for computer-assisted analysis of FDG-PET/CT in cancer therapy monitoring. The tool provides automatic semi-quantitative analysis of a baseline scan together with up to two follow-up scans (standardized uptake values, glycolytic volume). The tool also supports visual analysis by local spatial registration which allows display of tumor lesions with the same orientation in all scans. The tool’s stability and accuracy was tested at typical everyday image quality. Patients, methods: Ten unselected cancer patients in whom three FDG PET/CT scans had been performed were included. A total of 18 lesions were analyzed. Results: Automatic lesion tracking worked properly in all lesions but one. In this lesion local coregistration had to be adjusted manually tuwhich, however, is easily performed with the tool. Semi-automatic lesion segmentation and fully automatic semi-quantitative analysis worked properly in all cases. Computer-assisted analysis was significantly less time consuming than manual analysis. Conclusions: The novel software tool appears useful for analysis of FDGPET/ CT in cancer therapy monitoring in clinical routine patient care.

scholarly journals Computerized rapid high resolution quantitative analysis of plasma lipoproteins based upon single vertical spin centrifugation

1982 ◽  
Vol 23 (6) ◽  
pp. 923-935 ◽  
Author(s):  
J T Cone ◽  
J P Segrest ◽  
B H Chung ◽  
J B Ragland ◽  
S M Sabesin ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
High Resolution ◽  
Plasma Lipoproteins

Fast Activity Evoked by Intracranial 50 Hz Electrical Stimulation as a Marker of the Epileptogenic Zone

2015 ◽  
Vol 25 (05) ◽  
pp. 1550022 ◽  
Author(s):  
Elisa Bellistri ◽  
Ivana Sartori ◽  
Veronica Pelliccia ◽  
Stefano Francione ◽  
Francesco Cardinale ◽  
...  
Keyword(s):  
Visual Analysis ◽  
Activity Patterns ◽  
Frequency Component ◽  
High Frequency Stimulation ◽  
Computer Assisted ◽  
Epileptogenic Zone ◽  
Fast Activity ◽  
Frequency Stimulation ◽  
Definition Of ◽  
Assisted Analysis

Epilepsy is a disease characterized by aberrant connections between brain areas. The altered activity patterns generated by epileptic networks can be analyzed with intracerebral electrodes during pre-surgical stereo-electroencephalographic (EEG) monitoring in patients candidate to epilepsy surgery. The responses to high frequency stimulation (HFS) at 50Hz performed for diagnostic purposes during SEEG were analyzed with a new algorithm, to evaluate signal parameters that are masked to visual inspection and to define the boundaries of the epileptogenic network. The analysis was focused on 60–80 Hz activity that represented the largest frequency component evoked by HFS. The distribution of HFS-evoked fast activity across all (up to 162) recording contacts allowed to define different clusters of contacts that retrospectively correlated to the epileptogenic zone identified by the clinicians on the basis of traditional visual analysis. The study demonstrates that computer-assisted analysis of HFS-evoked activities may contribute to the definition of the epileptogenic network on intracranial recordings performed in a pre-surgical setting.

scholarly journals 3D DIGITAL TECHNOLOGIES TO RECORD EXCAVATION DATA: THE CASE OF THE CATACOMBS OF ST. LUCY (SIRACUSA, SICILY)

2016 ◽  
Author(s):  
Davide Tanasi ◽  
Ilenia Gradante ◽  
Mariarita Sgarlata
Keyword(s):  
High Resolution ◽  
Middle Ages ◽  
Visual Analysis ◽  
Digital Technologies ◽  
3D Modelling ◽  
Architectural Elements ◽  
Virtual Archaeology ◽  
Frequent Use ◽  
Long Life ◽  
The University

Between 2013 and 2015, Arcadia University in partnership with the Pontifical Commission for Sacred Archaeology and the University of Catania undertook new excavation campaigns in the Catacombs of St. Lucy at Siracusa. The research focuses on some very problematic parts of Region C of the complex, including Oratory C, the so-called Pagan Shrine and Crypt VI. These areas document most effectively the long life of this Christian hypogeum, which incorporated previous structures and artefacts related to the Greek period and continued to be used until the Middle Ages. During the excavation an array of 3D digital techniques (3D scanning, 3d Modelling, Image-based 3D modelling) was used for the daily recording of the archaeological units, but also to create high-resolution virtual replicas of certain districts of the catacombs. Furthermore, the same techniques were applied to support the study of certain classes of materials, such as frescoes and marble architectural elements that could otherwise only be studied in the dark environment of the catacombs, making the visual analysis of such complex artifacts difficult and sometimes misleading, not to mention that the frequent use of strong sources of light for study can also endanger them. The virtual archaeology research undertaken at the Catacombs of St. Lucy represents the first systematic application of 3D digital technologies to the study of such a special archaeological context in Sicily.

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