Polyp Detection from Colorectum Images by Using Attentive YOLOv5

Background: High-quality colonoscopy is essential to prevent the occurrence of colorectal cancers. The data of colonoscopy are mainly stored in the form of images. Therefore, artificial intelligence-assisted colonoscopy based on medical images is not only a research hotspot, but also one of the effective auxiliary means to improve the detection rate of adenomas. This research has become the focus of medical institutions and scientific research departments and has important clinical and scientific research value. Methods: In this paper, we propose a YOLOv5 model based on a self-attention mechanism for polyp target detection. This method uses the idea of regression, using the entire image as the input of the network and directly returning the target frame of this position in multiple positions of the image. In the feature extraction process, an attention mechanism is added to enhance the contribution of information-rich feature channels and weaken the interference of useless channels; Results: The experimental results show that the method can accurately identify polyp images, especially for the small polyps and the polyps with inconspicuous contrasts, and the detection speed is greatly improved compared with the comparison algorithm. Conclusions: This study will be of great help in reducing the missed diagnosis of clinicians during endoscopy and treatment, and it is also of great significance to the development of clinicians’ clinical work.

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CONVERSION FACTOR FOR PREDICTING ADENOMA DETECTION RATE FROM POLYP DETECTION RATE VARY ACCORDING TO COLONOSCOPY INDICATION AND GENDER OF ENDOSCOPED INDIVIDUALS

10.1055/s-0038-1637214 ◽

2018 ◽

Author(s):

G Vojtechova ◽

S Suchanek ◽

O Ngo ◽

B Buckova ◽

T Grega ◽

...

Keyword(s):

Detection Rate ◽

Conversion Factor ◽

Adenoma Detection Rate ◽

Polyp Detection ◽

Polyp Detection Rate ◽

Adenoma Detection ◽

And Gender

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A117 PROPOFOL SEDATION DOES NOT IMPROVE MEASURES OF COLONOSCOPY QUALITY – FINDINGS FROM THE SOUTHWEST ONTARIO COLONOSCOPY COHORT

Journal of the Canadian Association of Gastroenterology ◽

10.1093/jcag/gwab002.115 ◽

2021 ◽

Vol 4 (Supplement_1) ◽

pp. 97-98

Author(s):

M Sey ◽

B Yan ◽

Z Hindi ◽

M Brahmania ◽

J C Gregor ◽

...

Keyword(s):

Detection Rate ◽

Conscious Sedation ◽

Intubation Rate ◽

Polyp Detection ◽

Cecal Intubation ◽

Propofol Sedation ◽

Serrated Polyp ◽

Polyp Detection Rate ◽

Cecal Intubation Rate ◽

Colonoscopy Quality

Abstract Background The use of propofol during colonoscopy has gained increased popularity due to deeper anesthesia compared to conscious sedation. Prior studies examining the use of propofol sedation during colonoscopy have primarily focused on anesthesia outcomes. Whether propofol sedation is associated with improvements in colonoscopy outcomes is uncertain. Aims The primary outcome was adenoma detection rate (ADR). Secondary outcomes were the detection of any adenoma (conventional adenoma, sessile serrated polyp, and traditional serrated adenoma), sessile serrated polyp detection rate, polyp detection rate, cecal intubation rate, and perforation rate. Methods The Southwest Ontario Colonoscopy cohort consists of all patients who underwent colonoscopy between April 2017 and Oct 2018 at 21 hospitals serving a large geographic area in Southwest Ontario. Procedures performed in patients less than 18 years of age or by endoscopist who perform <50 colonoscopies/year were excluded. Data were collected through a mandatory quality assurance form that was completed by the endoscopist after each procedure. Pathology reports were manually reviewed. Results A total of 46,634 colonoscopies were performed by 75 physicians (37.5% by gastroenterologists, 60% by general surgeons, 2.5% others) of which 16,408 (35.2%) received propofol and 30,226 (64.8%) received conscious sedation (e.g. combination of a benzodiazepine and a narcotic). Patients who received propofol were likely to have a screening indication (49.2% vs 45.5%, p<0.0001), not have a trainee endoscopist present and be performed at a non-academic centre (32.2% vs 44.6%, p<0.0001). Compared to conscious sedation, use of propofol was associated with a lower ADR (24.6% vs. 27.0%, p<0.0001) and detection of any adenoma (27.7% vs. 29.8%, p<0.0001); no difference was observed in the detection ofsessile serrated polyps (5.0% vs. 4.7%, p=0.26), polyp detection rate (41.2% vs 41.2%, p=0.978), cecal intubation rate (97.1% vs. 96.8%, p=0.15) or perforation rate (0.04% vs. 0.06%,p=0.45). On multi-variable analysis, the use of propofol was not significantly associated with any improvement in ADR (RR=0.90, 95% CI 0.74–1.10, p=0.30), detection of any adenoma (RR=0.93, 95% CI 0.75–1.14, p=0.47), sessile serrated polyp detection rate (RR=1.20, 95%CI 0.90–1.60, p=0.22), polyp detection rate (RR=1.00, 95% CI 0.90–1.11, p=0.99), or cecal intubation rate (RR=1.00, 95%CI 0.80–1.26, p=0.99). Conclusions The use of propofol sedation does not improve colonoscopy quality metrics. Funding Agencies None

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A113 ANNUAL COLONOSCOPY VOLUME IS NOT PREDICTIVE OF COLONOSCOPY QUALITY - FINDINGS FROM THE SOUTHWEST ONTARIO COLONOSCOPY COHORT

Journal of the Canadian Association of Gastroenterology ◽

10.1093/jcag/gwab002.111 ◽

2021 ◽

Vol 4 (Supplement_1) ◽

pp. 92-93

Author(s):

M Sey ◽

O Siddiqi ◽

C McDonald ◽

S cocco ◽

Z Hindi ◽

...

Keyword(s):

Predictive Value ◽

Detection Rate ◽

Primary Outcome ◽

Case Mix ◽

Operating Characteristics ◽

Polyp Detection ◽

Cecal Intubation ◽

Polyp Detection Rate ◽

Secondary Outcomes ◽

Colonoscopy Quality

Abstract Background Performing a minimum number of colonoscopies annually has been proposed by some jurisdictions as a requirement for maintaining privileges. However, this practice is supported by limited evidence. Aims The objective of this study was to determine if annual colonoscopy volume was associated with colonoscopy quality metrics. Methods A population-based study was performed using the Southwest Ontario Colonoscopy cohort, which consists of all adult patients who underwent colonoscopy between April 2017 and Oct 2018 at 21 academic and community hospitals within the health region. Data were collected through a mandatory quality assurance form completed after each procedure and pathology reports were manually reviewed. Physician annualized colonoscopy volumes were compared by correlation analysis to each quality-related outcome, by means of the area under the receiver operating characteristics curve (AUROC), and logistic regression. The prognostic value of colonoscopy volume was also adjusted for case-mix and potential confounders in separate regression analyses for each outcome. The primary outcome was ADR. Secondary outcomes were polyp detection rate (PDR), sessile serrated polyp detection rate (SSPDR), and cecal intubation. Results A total of 47,195 colonoscopies were performed by 75 physicians (37.5% by gastroenterologists, 60% by general surgeons, 2.5% others). There were no clear relationships between annual colonoscopy volumes and study outcomes. Colonoscopy volume was not associated with ADR (OR 1.03, 95% CI 0.96–1.10, p=0.48) and corresponded to an AUROC not significantly different from the null (AUROC 0.52, 95% CI 0.43–0.61, p=0.65). Multi-variable regression adjusting for case-mix also demonstrated no predictive value of annual colonoscopy volume for the primary outcome (OR 1.03, 95% CI 0.94–1.12, p=0.55). Similarly, analyses of secondary outcomes failed to find an association between colonoscopy volume and PDR, SSPDR, or cecal intubation (Table 1). Conclusions Annual colonoscopy volumes do not predict ADR, PDR, SSPDR, or cecal intubation rate. Results of unconditional and conditional approaches for examining the predictive value of annual colonoscopy volume for quality related outcomes. Funding Agencies None

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Mo1557 Physician's Fatigue Influences on Adenoma Detection Rate and Polyp Detection Rate

Gastrointestinal Endoscopy ◽

10.1016/j.gie.2011.03.856 ◽

2011 ◽

Vol 73 (4) ◽

pp. AB385-AB386

Author(s):

Dongil Park ◽

Young-Ho Kim ◽

Suck-Ho Lee ◽

Chang Kyun Lee ◽

Chang Soo Eun ◽

...

Keyword(s):

Detection Rate ◽

Adenoma Detection Rate ◽

Polyp Detection ◽

Polyp Detection Rate ◽

Adenoma Detection

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P.05.21 POLYP DETECTION RATE CANNOT BE RECOMMENDED AS A SURROGATE FOR ADENOMA DETECTION RATE: A SYSTEMATIC REVIEW

Digestive and Liver Disease ◽

10.1016/s1590-8658(18)30512-7 ◽

2018 ◽

Vol 50 (2) ◽

pp. e174-e175

Author(s):

F. Pigò ◽

H. Bertani ◽

F. Abate ◽

R.L. Conigliaro

Keyword(s):

Systematic Review ◽

Detection Rate ◽

Adenoma Detection Rate ◽

Polyp Detection ◽

Polyp Detection Rate ◽

Adenoma Detection

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772 THE RELATIONSHIP BETWEEN THE ENDOSCOPIC WITHDRAWAL TIME AND ADENOMA/POLYP DETECTION RATE IN INDIVIDUAL COLONIC SEGMENTS. A KASID MULTICENTER STUDY

Gastrointestinal Endoscopy ◽

10.1016/j.gie.2018.04.1300 ◽

2018 ◽

Vol 87 (6) ◽

pp. AB115

Author(s):

Yunho Jung ◽

Jeong Eun Shin ◽

Young-Eun Joo ◽

Hyun Gun Kim ◽

Jong Wook Kim ◽

...

Keyword(s):

Multicenter Study ◽

Detection Rate ◽

Polyp Detection ◽

Withdrawal Time ◽

Polyp Detection Rate ◽

The Relationship

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Analysis of motivation for acting subjects in diagnostics of occupational diseases

Hygiene and Sanitation ◽

10.47470/0016-9900-2020-99-11-1217-1221 ◽

2020 ◽

Vol 99 (11) ◽

pp. 1217-1221

Author(s):

Alexey D. Trubetskov

Keyword(s):

Occupational Health ◽

Conflict Of Interest ◽

Occupational Diseases ◽

Detection Rate ◽

Conflicts Of Interest ◽

Structured Interviews ◽

Financial Interest ◽

Medical Institutions ◽

Professional Longevity ◽

Detection And Diagnosis

Introduction. There is a shallow detection rate of occupational diseases in Russia. A large number of acting subjects are usually involved in the diagnosis of diseases. There is considered the current cooperation between the acting subjects responsible for diagnostics of occupational diseases in various modes. Material and methods. A search was conducted for data that described the main trends concerning conflict of interest in occupational health. Questionnaires and semi-structured interviews were conducted on issues related to the diagnosis of occupational diseases of specialists working in various branches of this field of medicine Results. The author performed the analysis of existing conflicts of interest in acting subjects in the detection and diagnosis of occupational diseases and established the most significant acting subjects. Among them the most pronounced conflicts of interest were shown to be determined by employers (as institutions, and specific managers and doctors performing examinations of workers in harmful conditions, and the managing stuff of these medical institutions, as well as by the employees themselves, who are subject to these examinations. When analyzing the motivation of acting subjects, the primary and financial interest was shown to have less significance than the secondary one. Mutual connectivity in the implementation of secondary interests adjudicates a persistent configuration, which determines both the low detection rate of occupational diseases, including at early stages, and lack of opportunities for prolonging professional longevity. The existence of a conflict of interest is not evil in itself. Still, its resolution is always associated with obtaining benefits, including the entire country’s level (saving the lives of the working population). Conclusion. To increase staff lifespan and work longevity through the analysis of all acting subjects, it is necessary to improve managing decisions to achieve the predominant primary interests. The study of the conflicts of interest can be an effective method of understanding and improving the health system in occupational health to preserve public health and increase the working population’s longevity.

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Analysis of cranial type characteristics in term infants: A multi-center study

10.21203/rs.3.rs-30813/v2 ◽

2020 ◽

Author(s):

Yang Wang ◽

Hu Bin ◽

Chen Jianping ◽

Shen Wenzhi ◽

Wang Chengju ◽

...

Keyword(s):

Detection Rate ◽

International Standards ◽

Reference Standard ◽

Cephalic Index ◽

Term Infants ◽

Detection Rates ◽

Medical Institutions ◽

Multi Center Study ◽

Developing Nervous System ◽

Center Study

Abstract Background: Positional head deformity (PHD) is defined as a change in the shape of an infant's skull due to an external force. In certain cases, it can lead to cosmetic deformities or even neurological issues due to its impact on the developing nervous system. Therefore, we conducted this study to investigate the incidence and characteristics of PHD in term infants in China and preliminarily establish a localized diagnostic reference standard. Methods: Overall, 4456 term infants from three medical institutions in Chongqing were and divided and analyzed according to their age. Cranial vault asymmetry (CVA) and cephalic index (CI) were calculated in all infants. The current international diagnostic criteria were used to understand PHD incidence and analyze the CVA and CI distribution. Results: According to the current international standards, the total detection rate of PHD in Chongqing’s term infants was 81.5%, with brachycephaly alone being the most frequent (39.4%), followed by brachycephaly with plagiocephaly (34.8%) and plagiocephaly alone (6.2%). The detection rates of dolichocephaly were low: alone, 0.9% and combined with plagiocephaly, 0.2%. According to age, plagiocephaly (44.5%) and brachycephaly (82.0%) were the most frequent in the 2-3-month group. The 75th/90th/97th and 3rd/10th/25th/75th/90th/97th percentiles of CVA and CIs were 0.4/0.7/1.0 and 76.4/78.8/82.3/91.1/94.6/99.2%, respectively. Conclusions: According to the current international standards, the PHD detection rate among term infants in Chongqing was high. Therefore, a new diagnostic standard for Chinese infants was proposed where CVA ≥0.4 cm indicates plagiocephaly, CI ≥91% indicates brachycephaly, and CI ≤82% indicates dolichocephaly.

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