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Rajvinder Singh
University of Adelaide
RadiologyEndoscopyEndoscopic mucosal resectionGeneral surgeryMedicine
202Publications
27H-index
3,104Citations
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Publications 202
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Detection of early gastrointestinal tract malignancy can be challenging on white light endoscopy especially as lesions can be subtle and inconspicuous. With the advent of electronic chromoendoscopy technologies, lesions which have already been detected can be quickly and “conveniently” characterised. This review will discuss some of the indications and modern applications of chromoendoscopy in various conditions including Barrett’s oesophagus, oesophageal squamous cell carcinoma, early gastric c...
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Anomaly detection methods generally target the learning of a normal image distribution (i.e., inliers showing healthy cases) and during testing, samples relatively far from the learned distribution are classified as anomalies (i.e., outliers showing disease cases). These approaches tend to be sensitive to outliers that lie relatively close to inliers (e.g., a colonoscopy image with a small polyp). In this paper, we address the inappropriate sensitivity to outliers by also learning from inliers. ...
#1Sergei VoskoH-Index: 1
#2Neal ShahidiH-Index: 13
Last. Alan C. MossH-Index: 40
view all 15 authors...
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#1Iddo Bar-Yishay (Westmead Hospital)H-Index: 1
#2Neal Shahidi (UBC: University of British Columbia)H-Index: 13
Last. Alan C. MossH-Index: 40
view all 15 authors...
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#1David J. Tate (USYD: University of Sydney)H-Index: 9
#2Mayenaaz Sidhu (USYD: University of Sydney)H-Index: 5
Last. Michael J. Bourke (USYD: University of Sydney)H-Index: 39
view all 14 authors...
Abstract Background and Aims Residual or recurrent adenoma (RRA) is the major limitation of piecemeal endoscopic mucosal resection (p-EMR) for large colonic laterally spreading lesions (LSLs) ≥ 20 mm. En bloc EMR (e-EMR) has been shown to achieve low rates of RRA but specific procedural and long-term outcomes are unknown. Our aim was to compare long-term outcomes of size-matched LSLs stratified by whether they were resected e-EMR or p-EMR. Methods Data from a prospective tertiary referral multic...
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#1Leonardo Zorron Cheng Tao Pu (University of Adelaide)H-Index: 7
#2Khizar Rana (University of Adelaide)
Last. Yoshiki Hirooka (Fujita Health University)H-Index: 3
view all 13 authors...
Current data shows there are differences in factors associated with colorectal neoplasia based on geographical location and cultural settings. There are no studies focusing on the association between environmental factors and colorectal polyps in Australia. The aim of this study was to prospectively evaluate the association of various factors with different colorectal neoplasia histology. We utilized a simplified one-page questionnaire for patients undergoing colonoscopy for information on age; ...
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#1Leonardo Zorron Cheng Tao Pu (University of Adelaide)H-Index: 7
#2Keng Hoong Chiam (Lyell McEwin Hospital)
Last. Rajvinder Singh (University of Adelaide)H-Index: 27
view all 16 authors...
Abstract Background and Aims Surveillance postendoscopic resection (post-ER) currently warrants biopsies from the resection site scar in most cases, although clinical practice is variable. A classification with standard criteria for scars has not yet been established. We aimed to create and validate a novel classification for post-ER scars by using specific criteria based on advanced imaging. Methods Key endoscopic features for scars with and without recurrence were color respectively as (1) dar...
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#1Keng Hoong Chiam (Lyell McEwin Hospital)
#2Seon Ho Shin (Lyell McEwin Hospital)
Last. Rajvinder Singh (University of Adelaide)H-Index: 27
view all 6 authors...
Recent advances in endoscopic imaging of the esophagus have revolutionized the diagnostic capability for detecting premalignant changes and early esophageal malignancy. In this article, we review the practical application of narrow-band imaging focusing on diseases of the esophagus, including Barrett's esophagus, adenocarcinoma, and squamous cell carcinoma.
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#1Yuyuan Liu (University of Adelaide)H-Index: 1
#2Yu Tian (University of Adelaide)H-Index: 1
Last. Gustavo Carneiro (University of Adelaide)H-Index: 35
view all 7 authors...
The automatic detection of frames containing polyps from a colonoscopy video sequence is an important first step for a fully automated colonoscopy analysis tool. Typically, such detection system is built using a large annotated data set of frames with and without polyps, which is expensive to be obtained. In this paper, we introduce a new system that detects frames containing polyps as anomalies from a distribution of frames from exams that do not contain any polyps. The system is trained using ...
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#1Leonardo Zorron Cheng Tao Pu (University of Adelaide)H-Index: 7
#2Gabriel Maicas (University of Adelaide)H-Index: 5
Last. Alastair D. Burt (University of Adelaide)H-Index: 62
view all 13 authors...
Abstract Background and Aims Endoscopy guidelines recommend adhering to policies such as resect-and-discard only if optical biopsy is accurate. However, accuracy in predicting histology can vary greatly. Computer-aided diagnosis (CAD) for characterization of colorectal lesions may help with this issue. In this study, a CAD software developed at the University of Adelaide (Australia) including serrated polyp differentiation was validated with Japanese images on narrow-band imaging (NBI) and blue-...
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