Adaptive Eye Fundus Vessel Classification for Automatic Artery and Vein Diameter Ratio Evaluation

Informatica ◽  
2018 ◽  
Vol 29 (4) ◽  
pp. 757-771 ◽  
Author(s):  
Giedrius Stabingis ◽  
Jolita Bernatavičienė ◽  
Gintautas Dzemyda ◽  
Alvydas Paunksnis ◽  
Lijana Stabingienė ◽  
...  
Keyword(s):  
Diameter Ratio ◽  
Vein Diameter

scholarly journals Prediction of Portal Vein Thrombosis Following Hepatectomy for Perihilar Cholangiocarcinoma: Efficacy of Postoperative Portal Vein Diameter Ratio and Angle

2019 ◽  
Vol 39 (9) ◽  
pp. 5019-5026 ◽  
Author(s):  
TSUNEYUKI UCHIDA ◽  
YUSUKE YAMAMOTO ◽  
TEIICHI SUGIURA ◽  
YUKIYASU OKAMURA ◽  
TAKAAKI ITO ◽  
...  
Keyword(s):  
Portal Vein ◽  
Portal Vein Thrombosis ◽  
Diameter Ratio ◽  
Perihilar Cholangiocarcinoma ◽  
Vein Thrombosis ◽  
Vein Diameter

scholarly journals Study of the correlation of oesophageal varices with portal vein diameter and ratio of platelet count to splenic diameter and their comparative evaluation in liver cirrhosis

2021 ◽  
Vol 8 (9) ◽  
pp. 1405
Author(s):  
Harpreet Singh ◽  
Sidharth Sharma ◽  
Gurminder Singh ◽  
Dania Kaur
Keyword(s):  
Liver Cirrhosis ◽  
Platelet Count ◽  
Portal Vein ◽  
Comparative Evaluation ◽  
Significant Negative Correlation ◽  
Diameter Ratio ◽  
Oesophageal Varices ◽  
Non Invasive ◽  
Vein Diameter ◽  
The Mean

Background: The aim of the study was to determine the correlation of oesophageal varices (OV) with portal vein diameter and the platelet count to splenic diameter ratio and their comparative evaluation in patients of liver cirrhosis.Methods:The present study consisted of 50 patients diagnosed with liver cirrhosis. Necessary investigations were performed in all the patients including Upper gastrointestinal (GI) endoscopy. Platelet count/spleen diameter ratio, spleen diameter and portal vein diameter were calculated for all patients and the presence and grading of OV was then comparatively evaluated. The results were systematically recorded and statistically analysed.Results: The mean age of patients was 49.82±10.23 years. 78% of patients presented with OV. The portal vein diameter, platelet count, spleen diameter and platelet count/spleen diameter ratio were significantly increased in patients with OV than those without OV (p<0.0001). Highly significant positive correlation between portal vein diameter, spleen diameter and grading of OV was seen. Platelet count/spleen diameter ratio and platelet count was significantly decreased as the grade of OV increased in the patients. There was statistically, a highly significant negative correlation between them.Conclusions: The non-invasive parameters used to detect presence of OV in liver cirrhosis were portal vein diameter and platelet count/spleen diameter ratio. Though, both seemed to be effective in predicting OV, platelet count/spleen diameter ratio proved to be slightly more significant when compared to the other. 

Thigh Cuff Effects on Venous Flow Redistribution During 4 Days in Dry Immersion

2020 ◽  
Vol 91 (9) ◽  
pp. 697-702
Author(s):  
Philippe Arbeille ◽  
Danielle Greaves ◽  
Laurent Guillon ◽  
Stephane Besnard
Keyword(s):  
Left Ventricle ◽  
Ejection Fraction ◽  
Jugular Vein ◽  
Residual Effect ◽  
Cerebral Vein ◽  
Fluid Shift ◽  
Venous Flow ◽  
Additional Measure ◽  
Dry Immersion ◽  
Vein Diameter

PURPOSE: The objective was to quantify the venous redistribution during a 4-d dry immersion (DI) and evaluate the effect of thigh cuffs.METHODS: The study included nine control (Co) and nine subjects wearing thigh cuffs during the daytime (CU). Ultrasound measures were performed Pre-DI, on day 4 AM (D4 AM) and D4 PM: left ventricle stroke volume and ejection fraction (SV, EF), jugular vein volume (JVvol), portal vein diameter (PV), and middle cerebral vein velocity (MCVv). An additional measure of JVvol was performed on Day 1 after 2 h in DI.RESULTS: After 2 h in DI, JVvol increased significantly from Pre in both groups, but increased more in the Co compared to the CU subjects (Co: 0.27 0.15 cm3 to 0.94 0.22 cm3; CU: 0.32 0.13 cm3 to 0.64 0.32 cm3). At D4 AM, SV and EF decreased from Pre (SV: 111 23 cm3 to 93 24 cm3; EF: 0.66 0.07 to 0.62 0.07). JVvol was slightly increased (Co: 0.47 0.22 cm3 CU: 0.35 014 cm3). MCVv and PV remained unchanged from Pre-DI. No difference was found between the two groups for any of the parameters measured. From D4 AM to PM, no significant change was observed for any parameter.CONCLUSION: The results confirm that DI induces, during the first 2-3 h, a significant cephalic fluid shift as observed in spaceflight. During this early phase, the thigh cuffs reduced the amplitude of the fluid shift toward the head, but after 4 d in DI there was only a slight memory (residual) effect of DI on the jugular volume and no residual effect of the thigh cuffs.Arbeille P, Greaves D, Guillon L, Besnard S. Thigh cuff effects on venous flow redistribution during 4 days in dry immersion. Aerosp Med Hum Perform. 2020; 91(9):697702.

Ortho-k lenses fitting in patients with “non-typical” corneas

The Eye ◽  
2020 ◽  
Vol 22 (129) ◽  
pp. 22-29
Author(s):  
Svetlana Kravchuk ◽  
Olga Zhabina
Keyword(s):  
Correction Method ◽  
Diameter Ratio ◽  
Corneal Curvature ◽  
Individual Approach ◽  
Fitting In ◽  
Corneal Diameter ◽  
Clinical Cases

We described two clinical cases of ortho-k lenses fitting in patients with “non-typical” corneal curvature/diameter ratio. The main goal was to acknowledge effective and safe use of this myopia correction method in patients with corneal diameter greater than 11 mm. Individual approach to each patient is the key to a successful and safe ortho-k lenses fitting.

Sign in / Sign up

Export Citation Format

Share Document