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WBC Analysis Through Image Processing
Christine D. Bandalan,Randy G. Alegre,Angelie C. Allego,Paolo Francisco E. Alonso,Daniel L. Balagosa,Rodrigo C. Talingting Jr 대한전자공학회 2010 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
This study aims to develop a simple, cost effective and efficient neutrophil, lymphocyte and monocyte counter using image processing techniques. To achieve this, a microscope, with a CCD camera mounted on it, is interfaced with the system. The camera provides the live feed from the microscope which is the source of still images that are subjected to the software for assessment. OpenCV library is used in the image processing techniques. The process has two main modules ? cell detection and cell matching. In cell detection, the region of interest (ROI) is extracted and undergoes image matching by means of histogram method. Matching module is subdivided into three ? neutrophil matching, lymphocyte matching and monocyte matching. The result of the matching process is the classification of the detected cell which can be neutrophil, lymphocyte, monocyte or unclassified. Additionally, the total number of neutrophils, lymphocytes and monocytes including unclassified cells found per image and on all images are given.
Validation of low anterior resection syndrome score in Brazil with Portuguese
Buzatti Kelly C.L.R.,Petroianu Andy,Laurberg Søren,Silva Rodrigo G.,Rodrigues Beatriz D.S.,Christensen Peter,Lacerda-Filho Antonio,Juul Therese 대한대장항문학회 2023 Annals of Coloproctolgy Vol.39 No.5
Purpose: This study was performed to investigate the convergent validity, discriminative validity, and reliability of the Brazilian version of the low anterior resection syndrome (LARS) score in a population with low educational and socioeconomic levels. Methods: The LARS score was translated into the Portuguese language by forward- and back-translation procedures. In total, 127 patients from a public hospital in Brazil completed the questionnaires. The convergent validity was tested by comparing the LARS score with the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core Module 30 (QLQ-C30) and with patients’ self-reported quality of life. For the discriminative validity, we tested the ability of the score to differentiate among subgroups of patients regarding neoadjuvant radiotherapy, type of surgery, and tumor distance from the anal verge. The test-retest reliability was investigated in a subgroup of 36 patients who responded to the survey twice in 2 weeks. Results: The LARS score demonstrated a strong correlation with 5 of 6 items from the EORTC QLQ-C30 (P<0.05) and good concordance with patients’ self-reported quality of life (95.3%), confirming the convergent validity. The score was able to discriminate between subgroups of patients with different clinical characteristics related to LARS (P<0.001). The agreement between the test and retest showed that 86.1% of the patients remained in the same LARS category, and there was no significant difference between the LARS score numerical values (P=0.80), indicating good reliability overall. Conclusion: The Brazilian version of the LARS score is a valid and reliable instrument to assess postoperative bowel function in a population with low educational and socioeconomic levels.