ImageJ: A Free, Easy, and Reliable Method to Measure Leg Ulcers Using Digital Pictures

2017 ◽  
Vol 16 (4) ◽  
pp. 269-273 ◽  
Author(s):  
Javier Aragón-Sánchez ◽  
Yurena Quintana-Marrero ◽  
Cristina Aragón-Hernández ◽  
María José Hernández-Herero
Keyword(s):  
Correlation Coefficient ◽  
Wound Care ◽  
National Institutes Of Health ◽  
Area Measurement ◽  
Leg Ulcers ◽  
Digital Cameras ◽  
Wound Area ◽  
Care Nurse ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation

Wound measurement to document the healing course of chronic leg ulcers has an important role in the management of these patients. Digital cameras in smartphones are readily available and easy to use, and taking pictures of wounds is becoming a routine in specialized departments. Analyzing digital pictures with appropriate software provides clinicians a quick, clean, and easy-to-use tool for measuring wound area. A set of 25 digital pictures of plain foot and leg ulcers was the basis of this study. Photographs were taken placing a ruler next to the wound in parallel with the healthy skin with the iPhone 6S (Apple Inc, Cupertino, CA), which has a camera of 12 megapixels using the flash. The digital photographs were visualized with ImageJ 1.45s freeware (National Institutes of Health, Rockville, MD; http://imagej.net/ImageJ ). Wound area measurement was carried out by 4 raters: head of the department, wound care nurse, physician, and medical student. We assessed intra- and interrater reliability using the interclass correlation coefficient. To determine intraobserver reliability, 2 of the raters repeated the measurement of the set 1 week after the first reading. The interrater model displayed an interclass correlation coefficient of 0.99 with 95% confidence interval of 0.999 to 1.000, showing excellent reliability. The intrarater model of both examiners showed excellent reliability. In conclusion, analyzing digital images of leg ulcers with ImageJ estimates wound area with excellent reliability. This method provides a free, rapid, and accurate way to measure wounds and could routinely be used to document wound healing in daily clinical practice.

Estimation of the interclass correlation coefficient

Biometrika ◽  
1988 ◽  
Vol 75 (4) ◽  
pp. 731-739 ◽  
Author(s):  
M. S. SRIVASTAVA ◽  
K. J. KEEN
Keyword(s):  
Correlation Coefficient ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation

Reliability of a New Smartphone Accessory for Scoliosis Measurements

2020 ◽  
Author(s):  
Piotr Harasymczuk ◽  
Maciej Glowacki ◽  
Magdalena Wojtkow
Keyword(s):  
Mobile Devices ◽  
Correlation Coefficient ◽  
Rapid Development ◽  
Reliability And Validity ◽  
Diagnostic Tools ◽  
Concordance Correlation ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation ◽  
Lateral Curvature ◽  
Data Discrepancy

Abstract BACKGROUND: Idiopathic scoliosis is the most common pathology of the children’s spine, identified as spine lateral curvature with Cobb angle greater than 10°. The rapid development of technology allows, even mobile devices, to perform a quick and cheap diagnosis ensuring an accuracy similar to the Bunnell scoliometer. OBJECTIVE: The study aimed to validate the accuracy of a newly developed accessory for measuring the angle of trunk rotation (ATR) using mobile devices. METHODS: ATR measurements were carried out on a group of 30 adults using 3 diagnostic tools: the Bunnell scoliometer, Scolioscreen, and mScolio designed by the authors. Scolioscreen and mScolio were used together with a smartphone and the Clinometer app. Three measurements were performed using each of the methods. RESULTS: The greatest data discrepancy was obtained between the Bunnell scoliometer and Scolioscreen (-3.7°÷4.4°) and was twice larger than between the Bunnell scoliometer and mScolio (-1.8°÷2.1°). The excellent agreement was obtained for the mScolio device, where the concordance correlation coefficient was 0.9381 (95% CI of 0.9076÷0.9588) and the interclass correlation coefficient was 0.9501 (95% CI of 0.9242÷0.9671). CONCLUSIONS: Tests showed excellent reliability and validity of ATR using the mScolio solution. Obtained results show excellent consistency between mScolio and the Brunnell scoliometer measurements.

scholarly journals Corrigendum

2018 ◽  
Vol 25 (2) ◽  
pp. NP3-NP3
Keyword(s):  
Multiple Sclerosis ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Intraclass Correlation ◽  
Online Version ◽  
Step Test ◽  
First Line ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation ◽  
On Line

Callesen J, Richter C, Kristensen C, et al. Test–retest agreement and reliability of the Six Spot Step Test in persons with multiple sclerosis. Mult Scler. Epub ahead of print 20 December 2017. DOI: 10.1177/1352458517745725 In this article, ‘Intraclass Correlation Coefficient’ appeared incorrectly as ‘Interclass Correlation Coefficient’ on two occasions, once on line eight of the abstract and once on page four, on the first line of paragraph two. This error has now been corrected in the online version of the article.

scholarly journals Automated Measurement of Iris Surface Smoothness Using Anterior Segment Optical Coherence Tomography  

2021 ◽  
Author(s):  
Mohammad Zarei ◽  
Tahereh Mahmudi ◽  
Hamid Riazi-Esfahani ◽  
Behnam Mousavi ◽  
Nazanin Ebrahimiadib ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Correlation Coefficient ◽  
Anterior Segment ◽  
Control Group ◽  
Optical Coherence ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation ◽  
Automated Measurements ◽  
And Control ◽  
Fellow Eyes

Abstract Fuchs uveitis (FU) is a chronic and often unilateral ocular inflammation and characteristic iris atrophic changes, other than heterochromia, are common in FU and are key to the correct diagnosis in many cases. With the advent of anterior segment optical coherence tomography (AS-OCT), some investigators attempted to quantitatively study these atrophic changes; mostly by introducing various methods to measure iris thickness in AS-OCT images. We aimed to present an automated method in a observational case series to measure the smoothness index (SI) of iris surface in AS-OCT images. The ratio of the length of the straight line connecting the most peripheral and central points of the anterior iris border (in nasal and temporal sides) to the actual length of this border on AS-OCT images, was defined as SI. In a uveitis referral center twenty-two eyes of 11 patients with unilateral Fuchs uveitis (FU) (7 female) and 22 eyes of 11 healthy control subjects underwent AS-OCT imaging. Image J and a newly developed MATLAB algorithm were used for manual and automated SI measurements, respectively. Agreement between manual and automated measurements was evaluated with Bland-Altman analysis and interclass correlation coefficient. The inter-eye difference of SI was compared between FU group and control group. Automated mean overall SI was 0.868 ± 0.037 and 0.840 ± 0.039 in FU and healthy fellow eyes, respectively (estimated mean difference = -0.028, 95% CI [-0.038, -0.018], p<0.001). Bland- Altman plots showed good agreement between two methods in both healthy and FU eyes. Interclass correlation coefficient between the manual and automated measurements in the FU and healthy fellow eyes was 0.958 and 0.964, respectively. Inter-eye difference of overall SI was 0.029 ± 0.015 and 0.012 ± 0.008 in FU group and control group, respectively (p=0.01). We concluded that he automated algorithm can rapidly and conveniently measure SI with results comparable to manual method.

scholarly journals Inter and intraobserver variability in the echocardiographic measurement of vegetations in infective endocarditis

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J Lopez Diaz ◽  
P.E Garcia Granja ◽  
M.T Sevilla ◽  
A Revilla ◽  
I Vilacosta ◽  
...  
Keyword(s):  
Infective Endocarditis ◽  
Correlation Coefficient ◽  
Intraobserver Variability ◽  
Observer Variability ◽  
Surgical Indications ◽  
Transesophageal Echocardiogram ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation ◽  
Clinical Scenarios ◽  
Longitudinal Diameter

Abstract Introduction and objectives The indication for surgery to prevent embolism in infective endocarditis includes four clinical scenarios and three different echocardiographic measurements of the maximal vegetation diameter. These cut-off points are completely arbitrary and not evidence-based. Our hypothesis is that the vegetation diameter is not an appropriate surgical criterium. The goal of the study is to analyze the inter and intra-observer variability in this measurement and to compare the surgical indications agreement based on these parameters. Methods Two trained echocardiographers have measured the maximal vegetation diameter by transesophageal echocardiogram in 67 consecutive patients with definite infective endocarditis in an off-line workstation. The inter- and intra-observer variability was calculated by the interclass correlation coefficient and with the Bland-Altman analysis. The relationship between the strength of agreement for the cut-off points of 10 and 15 mm was also calculated. Results Intra and inter-observer interclass correlation coefficient in the measurement of the maximal longitudinal diameter of the vegetations were 0.872 (0.805–0.917) and 0.757 (0.642–0.839) respectively. The strength of agreement of the intra and inter-observer analysis for the cut-off point of 10 mm were 0.674 (0.485–0.862) and 0.533 (0.327–0.759). For the cut-off point of 15 mm they were 0.696 (0.530–0.862) and 0.475 (0.270–0.679). Conclusions The variability in the measurements of the maximal longitudinal diameter by transesophageal echocardiogram between two experimented echocardiographers is good. Nonetheless, surgical indications based on the cut-off points recommended in the European guidelines would have changed in an unacceptable high proportion of patients. Therefore, we suggest that these indications should be revised in the light of our results. Funding Acknowledgement Type of funding source: None

scholarly journals Reliability of a Test for Assessment of Isometric Trunk Muscle Strength in Elderly Women

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Marceli M. A. Mesquita ◽  
Marta S. Santos ◽  
Alan B. S. Vasconcelos ◽  
Clodoaldo A. de Sá ◽  
Luana C. D. Pereira ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Elderly Women ◽  
High Reliability ◽  
Isometric Strength ◽  
Lower Limbs ◽  
Cross Sectional ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation ◽  
Detectable Difference ◽  
Minimum Detectable Difference

Objective. The aim of this study was to analyze the reproducibility of a protocol using the maximal isometric strength test of the trunk in elderly women aged above 60 years, without low back pain. Methods. Twenty-one physically inactive elderly women, who had not engaged in any activity or exercise program in the past three months, participated in the cross-sectional study that consisted of two days of evaluations for the maximal isometric strength of the extensor and flexor muscles of the trunk, with a 48 h interval between the sessions. A platform with fixed seating was used, which allowed the fixation of the hip and lower limbs, with a load cell connected to a linear encoder. To verify the reliability of the test, the interclass correlation coefficient, variation coefficient, minimum detectable difference (MDD), standard error of measurement, and Bland–Altman graphs were calculated. Results. No statistical difference was observed between the first and second evaluation, which indicates that there was no learning effect. Interclass correlation coefficient values were classified as very high and high for extensor (0.98) and flexor (0.86) muscles, respectively, besides low variation (9% for both muscle groups) and acceptable values for minimum detectable difference (extensors = 51.1 N, flexors = 48.9 N). In addition, the Bland–Altman analysis revealed low bias and values within the limits of agreement. Conclusion. It is concluded that the test of maximum isometric strength of the trunk in healthy and trained elderly people presents high reliability. These values proved to be reliable if performed in at least two evaluation sessions, which confirms the hypothesis of the authors by the consistency of the measurement test.

Functional Imaging in Wounds: Imaging Modalities of Today and Tomorrow

2021 ◽  
Author(s):  
Scott Stratman ◽  
Caralin Schneider ◽  
Hadar Lev-Tov ◽  
Robert Kirsner
Keyword(s):  
Wound Healing ◽  
Healthcare System ◽  
Wound Care ◽  
Significant Risk ◽  
Area Measurement ◽  
Imaging Modalities ◽  
Wound Area ◽  
Wound Assessment ◽  
Risk Of Mortality ◽  
The Us

Wound care is a multidisciplinary field with significant economic burden to our healthcare system. Not only does wound care cost the US healthcare system $20 billion annually, but wounds also remarkably impact the quality of life of patients; wounds pose significant risk of mortality, as the five-year mortality rate for diabetic foot ulcers (DFUs) and ischemic ulcers is notably higher compared to commonly encountered cancers such as breast and prostate. Although it is important to measure how wounds may or may not be improving over time, the only relative “marker” for this is wound area measurement—area measurements can help providers determine if a wound is on a healing or non-healing trajectory. Because wound area measurements are currently the only readily available “gold standard” for predicting healing outcomes, there is a pressing need to understand how other relative biomarkers may play a role in wound healing. Currently, wound care centers across the nation employ various techniques to obtain wound area measurements; length and width of a wound can be measured with a ruler, but this carries a high amount of inter- and intrapersonal error as well as uncertainty. Acetate tracings could be used to limit the amount of error but do not account for depth, thereby making them inaccurate. Here, we discuss current imaging modalities and how they can serve to accurately measure wound size and serve as useful adjuncts in wound assessment. Moreover, new imaging modalities are also discussed and how up-and-coming technologies can provide important information on “biomarkers” for wound healing.

scholarly journals The Reproducibility of the Jaw Index in the Measurement of Healthy Newborns

2019 ◽  
Vol 57 (5) ◽  
pp. 574-580
Author(s):  
J.F. Mermans ◽  
S.M. Ghasemi ◽  
B.I. Lissenberg-Witte ◽  
J.P.W. Don Griot
Keyword(s):  
Correlation Coefficient ◽  
Average Length ◽  
Intraclass Correlation ◽  
Feeding Problems ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation ◽  
The Mean ◽  
Maxilla And Mandible ◽  
Measuring Tool ◽  
The Relationship

Objective: Establish the reliability of the jaw index to objectify the relationship between the maxilla and mandible in healthy newborns. Design: Cohort study. Setting: Tertiary setting. Patients: A total of 52 healthy newborns were included to detect an inter and intraclass correlation coefficient (ICC) of 0.8 with a 95% confidence interval (95% CI) of width 0.3. Inclusion criteria were children born full term without respiratory or feeding problems, and without congenital malformations or facial deformities due to birth trauma. Uncooperative patients were excluded. Interventions: The jaw index, a measuring tool for objectifying micrognathia in children suspected of having Robin sequence, was used. An ICC of greater than 0.8 was considered clinically relevant. Main Outcome Measure(s): Primary outcomes are the reliability of the jaw index expressed as interclass correlation coefficient and ICC. Secondary outcomes are the mean jaw index and mean length of the mandible, maxilla, and the alveolar overjet. Results: An interclass correlation coefficient of 0.74 (95% CI: 0.49-0.86) and an ICC of 0.81 (95% CI: 0.66-0.89) were found. The mandible had an average length of 162.6 mm (standard deviation [SD] 11.1), the maxilla 168.7 mm (SD 9.4), the alveolar overjet 2.0 mm (SD 0.60), and the mean jaw index was 2.1 (SD 0.64). Conclusion: The jaw index is a consistent instrument between different observers as well as for one observer measuring consecutively in the same child, to objectify the size of the lower jaw compared to that of the upper jaw in healthy newborns.

scholarly journals Vacutainer serum separator sebagai alternatif tabung penampung darah pada pemeriksaan kadar ureum

2021 ◽  
Vol 4 (1) ◽  
pp. 81
Author(s):  
Budi Setiawan ◽  
Ulfah Restu Nugraheni ◽  
Muji Rahayu
Keyword(s):  
Correlation Coefficient ◽  
Descriptive Analysis ◽  
Statistical Test ◽  
Cross Sectional ◽  
Urea Level ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation ◽  
Significant Difference ◽  
The Difference ◽  
Cross Sectional Design

ABSTRACT Serum using is preferred for urea level because it does not use anticoagulants which can interfere with activity and  reaction to the results. The tubes that are widely used to collect blood into serum are  vacutainer serum separator and  vacutainer plain.This researche aims to determine the degree of agreement s between vacutainer serum separator and vacutainer plain usage on serum urea level result.This research was cross sectional design and hold on October 2020 with subject were taken from  thirty blood samples of health analyst students which taken randomly and had no history of disease or kidney function disorder. Each student was taken 6 ml of blood drawn using a venoject with each vacutainer containing 3 ml, so we had 60 data. The data were analyzed by descriptively and inferentially using the Interclass Correlation Coefficient (ICC) statistical test. From the descriptive analysis, the difference in mean levels was 0.35 mg/dL and the ICC statistical test resulted in a degree of agreement 0.745. The data were analyzed by descriptively and inferentially using the Interclass Correlation Coefficient (ICC) statistical test. From the descriptive analysis, the difference in mean levels was 0.35 mg/dL and the ICC statistical test resulted in a degree of agreement was 0.745. The calculation of the average working time between the vacutainer serum separator and the vacutainer plain was 4 minutes 38 seconds and 35 minutes 58 seconds. The analysis concluded that the vacutainer serum separator and the vacutainer plain could be used as an alternative of blood collecting tubes for urea level testing which proved to be no significant difference in the results from this research. Keywords : Urea level,  Vacutainer Serum Separator,  Vacutainer Plain

scholarly journals Hubungan Efikasi Diri dengan Kemampuan Orientasi Mobilitas Siswa Tunanetra SLB A YKAB Surakarta

2021 ◽  
Vol 5 (2) ◽  
pp. 112-120
Author(s):  
Ersa Mayori ◽  
Munawir Yusuf ◽  
Subagya Subagya
Keyword(s):  
Correlation Coefficient ◽  
Expert Judgement ◽  
Interclass Correlation Coefficient ◽  
Interclass Correlation

Penelitian ini bertujuan untuk mengetahui hubungan antara efikasi diri dengan kemampuan orientasi mobilitas siswa tunanetra di SLB A YKAB Surakarta. Penelitian ini adalah penelitian kuantitatif dengan desain korelasional. Subjek dalam penelitian ini adalah seluruh siswa tunanetra SLB A YKAB Surakarta. Penentuan subjek pada penelitian ini dilakukan dengan teknik purposif sampling. Teknik pengumpulan data dalam penelitian ini dengan menggunakan angket efikasi diri dan tes kinerja kemampuan orientasi mobilitas. Penelitian ini menggunakan teknik uji validitas isi oleh para ahli (expert judgement) sebagai validator yang selanjutnya dihitung menggunakan Aiken’s V. Pada uji reliabilitasnya menggunakan Interclass Correlation Coefficient dengan bantuan SPSS 26. Teknik analisis data yang digunakan pada penelitian ini adalah analisis korelasi Sperman Rank. Hasil uji korelasi dalam penelitian ini menunjukkan nilai koefisien korelasi sebesar 0,654 dengan nilai rtabel 0,591, sehingga rhitung ? rtabel untuk taraf signifikansi 0,05. Berdasarkan hasil penelitian dan analisis data yang telah dilakukan, dapat disimpulkan bahwa terdapat hubungan positif yang signifikan antara efikasi diri dengan kemampuan orientasi mobilias siswa tunanetra SLB A YKAB Surakarta

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