scholarly journals Diagnostic Trial

2020 ◽  
Author(s):  
Keyword(s):  
Diagnostic Trial

scholarly journals Expert-level classification of gastritis by endoscopy using deep learning: a multicenter diagnostic trial

2021 ◽  
Vol 09 (06) ◽  
pp. E955-E964
Author(s):  
Ganggang Mu ◽  
Yijie Zhu ◽  
Zhanyue Niu ◽  
Shigang Ding ◽  
Honggang Yu ◽  
...  
Keyword(s):  
Deep Learning ◽  
Atrophic Gastritis ◽  
Intestinal Metaplasia ◽  
Layer By Layer ◽  
Test Set ◽  
White Light Endoscopy ◽  
High Risk Factors ◽  
External Test ◽  
Diagnostic Trial

Abstract Background and study aims Endoscopy plays a crucial role in diagnosis of gastritis. Endoscopists have low accuracy in diagnosing atrophic gastritis with white-light endoscopy (WLE). High-risk factors (such as atrophic gastritis [AG]) for carcinogenesis demand early detection. Deep learning (DL)-based gastritis classification with WLE rarely has been reported. We built a system for improving the accuracy of diagnosis of AG with WLE to assist with this common gastritis diagnosis and help lessen endoscopist fatigue. Methods We collected a total of 8141 endoscopic images of common gastritis, other gastritis, and non-gastritis in 4587 cases and built a DL -based system constructed with UNet + + and Resnet-50. A system was developed to sort common gastritis images layer by layer: The first layer included non-gastritis/common gastritis/other gastritis, the second layer contained AG/non-atrophic gastritis, and the third layer included atrophy/intestinal metaplasia and erosion/hemorrhage. The convolutional neural networks were tested with three separate test sets. Results Rates of accuracy for classifying non-atrophic gastritis/AG, atrophy/intestinal metaplasia, and erosion/hemorrhage were 88.78 %, 87.40 %, and 93.67 % in internal test set, 91.23 %, 85.81 %, and 92.70 % in the external test set ,and 95.00 %, 92.86 %, and 94.74 % in the video set, respectively. The hit ratio with the segmentation model was 99.29 %. The accuracy for detection of non-gastritis/common gastritis/other gastritis was 93.6 %. Conclusions The system had decent specificity and accuracy in classification of gastritis lesions. DL has great potential in WLE gastritis classification for assisting with achieving accurate diagnoses after endoscopic procedures.

scholarly journals Su1373 UTILITY OF LIVER AND SPLEEN EUS-ELASTOGRAPHY AS A DIAGNOSTIC TOOL FOR PREDICTING LIVER CIRRHOSIS AND PORTAL HYPERTENSION: A CASE-CONTROL DIAGNOSTIC TRIAL

2018 ◽  
Vol 87 (6) ◽  
pp. AB327-AB328
Author(s):  
Carlos Robles-Medranda ◽  
Manuel Valero ◽  
Miguel Puga-Tejada ◽  
Roberto Oleas ◽  
Joao A. Nebel ◽  
...  
Keyword(s):  
Liver Cirrhosis ◽  
Portal Hypertension ◽  
Diagnostic Tool ◽  
Case Control ◽  
Eus Elastography ◽  
Diagnostic Trial

Consultation with the specialist

1992 ◽  
Vol 13 (7) ◽  
pp. 273-274
Author(s):  
Frederick H. Lovejoy
Keyword(s):  
Physical Examination ◽  
Case History ◽  
Laboratory Tests ◽  
Deep Inspiration ◽  
Deep Breathing ◽  
Logical Sequence ◽  
History Of ◽  
Difficult Challenge ◽  
Diagnostic Trial ◽  
Rapid Laboratory

Diagnosing poisoning by an unknown agent can be a difficult challenge. Five strategies of assessment may be used in logical sequence, however, to arrive at a diagnosis: (a) history, (b) physical examination, (c) rapid laboratory tests, (d) diagnostic trial, and (e) screening for toxins. This is illustrated by a case history, followed by discussion of a recommended approach and the utilization of these principles to arrive at a diagnosis in the case. Initial Case History A 41/2-year-old boy, with a history of onset of deep breathing following supper, is brought to your office by his mother. He had been alert and well all day, without fever, fully oriented, and without vomiting or diarrhea. He had been playing both in the house and garage in the morning and had spent the afternoon watching television. His temperature is 37.6°C, respiratory rate is 60 breaths per minute with deep inspiration and expiration, and pulse is 100 beats per minute and regular. He is without cyanosis. His pupils are midpoint, his lungs are clear, and his breath has no noticeable odor. What would you ask the mother in an effort to establish a diagnosis? History An unknown agent often can be suspected by history alone. The location of ingestion, if known, can offer clues.

Canine borreliosis: A laboratory diagnostic trial

2007 ◽  
Vol 120 (1-2) ◽  
pp. 132-141 ◽  
Author(s):  
S. Speck ◽  
B. Reiner ◽  
W.J. Streich ◽  
C. Reusch ◽  
M.M. Wittenbrink
Keyword(s):  
Diagnostic Trial

Filling the gap between lab and clinical impact: An open randomized diagnostic trial comparing urinary ethylglucuronide and ethanol in alcohol dependent outpatients

2018 ◽  
Vol 183 ◽  
pp. 225-230 ◽  
Author(s):  
Pablo Barrio ◽  
Lídia Teixidor ◽  
Lluisa Ortega ◽  
Anna Lligoña ◽  
Nayra Rico ◽  
...  
Keyword(s):  
Clinical Impact ◽  
Diagnostic Trial ◽  
Alcohol Dependent

Sequential diagnostic trial designs

2010 ◽  
Vol 3 (1) ◽  
pp. 79-83 ◽  
Author(s):  
Ting Dong ◽  
Liansheng Tang
Keyword(s):  
Diagnostic Trial
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