scholarly journals Differentiating Experience From Cue Utilization in Radiological Assessments

2020 ◽  
pp. 001872082090257 ◽  
Author(s):  
Ann J. Carrigan ◽  
John Magnussen ◽  
Andrew Georgiou ◽  
Kim M. Curby ◽  
Thomas J. Palmeri ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Diagnostic Accuracy ◽  
Diagnostic Performance ◽  
Assessment Tool ◽  
Image Interpretation ◽  
Training Needs ◽  
Years Of Experience ◽  
Cue Utilization ◽  
Domain Specific

Objective This research was designed to examine the contribution of self-reported experience and cue utilization to diagnostic accuracy in the context of radiology. Background Within radiology, it is unclear how task-related experience contributes to the acquisition of associations between features with events in memory, or cues, and how they contribute to diagnostic performance. Method Data were collected from 18 trainees and 41 radiologists. The participants completed a radiology edition of the established cue utilization assessment tool EXPERTise 2.0, which provides a measure of cue utilization based on performance on a number of domain-specific tasks. The participants also completed a separate image interpretation task as an independent measure of diagnostic performance. Results Consistent with previous research, a k-means cluster analysis using the data from EXPERTise 2.0 delineated two groups, the pattern of centroids of which reflected higher and lower cue utilization. Controlling for years of experience, participants with higher cue utilization were more accurate on the image interpretation task compared to participants who demonstrated relatively lower cue utilization ( p = .01). Conclusion This study provides support for the role of cue utilization in assessments of radiology images among qualified radiologists. Importantly, it also demonstrates that cue utilization and self-reported years of experience as a radiologist make independent contributions to performance on the radiological diagnostic task. Application Task-related experience, including training, needs to be structured to ensure that learners have the opportunity to acquire feature–event relationships and internalize these associations in the form of cues in memory.

scholarly journals B-mode and Power Doppler Ultrasound in Adnexal Masses

2009 ◽  
Vol 3 (1) ◽  
pp. 31-40
Author(s):  
Silvia Ajossa ◽  
Anna Maria Paoletti ◽  
Nicoletta Garau ◽  
Valerio Mais ◽  
Bruno Piras ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Main Parameter ◽  
Diagnostic Performance ◽  
Color Doppler ◽  
Power Doppler ◽  
Power Doppler Ultrasound ◽  
Less Invasive Surgery ◽  
Adnexal Masses ◽  
Adnexal Pathology

Abstract Adnexal masses can be classified in ovarian, paraovarian or tubal. In the present review we analyzed the diagnostic performance of transvaginal ultrasonography in identifying simple ultrasonographic findings of benign adnexal pathology but also the role of color Doppler in the differential diagnoses between benign and malignant masses and in the preoperative triage. Because of many kinds of adnexal masses have usually a typical ultrasound appearance, the results of the studies present in literature showed a good and sufficient diagnostic accuracy. Unfortunately some cases with uncertain findings are present and in these cases the addition of color Doppler can be useful as demonstrated by several authors. Using the location of flow evaluated using color Doppler as main parameter a mass should be graded as malignant if flow is shown centrally within the excrescences or solid areas. The same approach should be used to triage the patients with adnexal masses to the most appropriate surgical approach with an increase of less invasive surgery.

scholarly journals Diagnostic performance of hematological discrimination indices to discriminate between βeta thalassemia trait and iron deficiency anemia and using cluster analysis: Introducing two new indices tested in Iranian population

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Mina Jahangiri ◽  
Fakher Rahim ◽  
Amal Saki Malehi
Keyword(s):  
Cluster Analysis ◽  
Iron Deficiency ◽  
Diagnostic Accuracy ◽  
Iron Deficiency Anemia ◽  
Diagnostic Performance ◽  
Microcytic Anemia ◽  
Deficiency Anemia ◽  
Thalassemia Trait ◽  
Accuracy Measures ◽  
Good Diagnostic Accuracy

AbstractAlthough the discrimination between β-thalassemia trait (βTT) and Iron deficiency anemia (IDA) is important clinically, but it is challenging and normally difficult; so if a patient with IDA is diagnosed as βTT, then it is deprived of iron therapy. This study purpose was to evaluate the 26 different discriminating indices diagnostic function in patients with microcytic anemia by using accuracy measures, and also recommending two distinct new discriminating indices as well. In this study, 907 patients were enrolled with the ages over 18-year-old with either βTT or IDA. Twenty-six discrimination indices diagnostic performance presented in earlier studies, and two new indices were introduced in this study (CRUISE index and index26) in order to evaluate the differential between βTT and IDA by using accuracy measures. 537 (59%) patients with βTT (299 (56%) women, and 238 (44%) men), and also 370 (41%) patients with IDA (293 (79%) women, and 77 (21%) men) were participated in this study for evaluating the 28 discrimination indices diagnostic performance. Two new introduced indices (CRUISE index and index26) have better performance than some discrimination indices. Indices with the amount of AUC higher than 0.8 had very appropriate diagnostic accuracy in discrimination between βTT and IDA, and also CRUISE index has good diagnostic accuracy, too. The present study was also the first cluster analysis application in order to identify the homogeneous subgroups of different indices with similar diagnostic function. In addition, new indices that offered in this study have presented a relatively closed diagnostic performance by using cluster analysis for the different indices described in earlier studies. Thus, we suggest the using of cluster analysis in order to determine differential indices with similar diagnostic performances.

Cue Utilization as an Objective Metric in Naturalistic Decision-Making

2020 ◽  
Vol 64 (1) ◽  
pp. 209-213
Author(s):  
Mark W. Wiggins
Keyword(s):  
Decision Making ◽  
New Technologies ◽  
Naturalistic Decision Making ◽  
Cue Utilization ◽  
Training Outcomes ◽  
Domain Specific ◽  
Wide Range ◽  
Robust Process ◽  
Selection Of

The utilization of cues is a process that underpins a wide range of naturalistic models of decision-making, often differentiating the performance of experts and non-experts. However, the domain-specific and idiosyncratic nature of cue utilization means that the existence of cues in memory, together with their application, has been difficult to assess. This paper explains a valid and reliable approach to the assessment of cue utilization that accounts for idiosyncrasy and confirms the role of cues in facilitating performance amongst skilled practitioners. It also enables comparative analyses between operators, thereby facilitating a more robust process for the selection of subject-matter experts, assessments of gaps in performance that might be explained by differences in cue utilization, especially following the introduction of new technologies, the evaluation of training outcomes against baseline performance, and the identification of changes in cue utilization that might be associated with absences or other workplace demands.

Measuring “Language Access Profiles” in Deaf and Hard-of-Hearing Children With the DHH Language Exposure Assessment Tool

2020 ◽  
pp. 1-25
Author(s):  
Matthew L. Hall ◽  
Stephanie De Anda
Keyword(s):  
Cluster Analysis ◽  
Exposure Assessment ◽  
Hard Of Hearing ◽  
Assessment Tool ◽  
Communication Mode ◽  
Developmental Potential ◽  
Language Access ◽  
Retest Reliability ◽  
Language Exposure ◽  
Test Retest Reliability

Purpose The purposes of this study were (a) to introduce “language access profiles” as a viable alternative construct to “communication mode” for describing experience with language input during early childhood for deaf and hard-of-hearing (DHH) children; (b) to describe the development of a new tool for measuring DHH children's language access profiles during infancy and toddlerhood; and (c) to evaluate the novelty, reliability, and validity of this tool. Method We adapted an existing retrospective parent report measure of early language experience (the Language Exposure Assessment Tool) to make it suitable for use with DHH populations. We administered the adapted instrument (DHH Language Exposure Assessment Tool [D-LEAT]) to the caregivers of 105 DHH children aged 12 years and younger. To measure convergent validity, we also administered another novel instrument: the Language Access Profile Tool. To measure test–retest reliability, half of the participants were interviewed again after 1 month. We identified groups of children with similar language access profiles by using hierarchical cluster analysis. Results The D-LEAT revealed DHH children's diverse experiences with access to language during infancy and toddlerhood. Cluster analysis groupings were markedly different from those derived from more traditional grouping rules (e.g., communication modes). Test–retest reliability was good, especially for the same-interviewer condition. Content, convergent, and face validity were strong. Conclusions To optimize DHH children's developmental potential, stakeholders who work at the individual and population levels would benefit from replacing communication mode with language access profiles. The D-LEAT is the first tool that aims to measure this novel construct. Despite limitations that future work aims to address, the present results demonstrate that the D-LEAT represents progress over the status quo.

Testing the sociometer: The role of self-esteem as a domain specific mediator

2007 ◽  
Author(s):  
P. S. Kavanagh ◽  
G. J. O. Fletcher ◽  
B. J. Ellis
Keyword(s):  
Self Esteem ◽  
Domain Specific

Experience of negative pressure wound therapy over sternal wound healing: A retrospective review

WCET Journal ◽  
2019 ◽  
Vol 39 (2) ◽  
pp. 9-18
Author(s):  
Wai Sze Ho ◽  
Wai Kuen Lee ◽  
Ka Kay Chan ◽  
Choi Ching Fong
Keyword(s):  
Wound Healing ◽  
Negative Pressure ◽  
Negative Pressure Wound Therapy ◽  
Assessment Tool ◽  
Wound Care ◽  
Wound Therapy ◽  
Treatment Pathways ◽  
Wound Assessment ◽  
One Year

Objectives The aim of this study was to retrospectively review the effectiveness of negative pressure wound therapy (NPWT) in sternal wound healing with the use of the validated Bates-Jensen Wound Assessment Tool (BWAT), and explore the role of NPWT over sternal wounds and future treatment pathways. Methods Data was gathered from patients' medical records and the institution's database clinical management system. Seventeen subjects, who had undergone cardiothoracic surgeries and subsequently consulted the wound care team in one year were reviewed. Fourteen of them were included in the analysis. Healing improvement of each sternal wound under continuous NPWT and continuous conventional dressings was studied. In total, 23 continuous NPWT and 13 conventional dressing episodes were analysed with the BWAT. Results Among conventional dressing episodes, sternal wound improvement was 2.5–3% over 10 days to 3.5 weeks, whereas 4–5% sternal healing was achieved in 5 days to 2 weeks with sternal wire presence. Better healing at 11% in 1 week by conventional dressing was attained after sternal wire removal. In NPWT episodes, 8–29%, 13–24%, and 15–46% of healing was observed in 2 weeks, 3.5 to 5 weeks and 6 to 7 weeks, respectively. Only 39% wound healing was acquired at the 13th week of NPWT in one subject. With sternal wire present, 6%–29% wound healing progress was achieved by NPWT in 1–4 weeks, and 16–23% wound improvement in 2 to 4.5 weeks by NWPT after further surgical debridement. After sternal wire removal, 6–34% sternal wound healing occurred by continuous NPWT for 1–2 weeks, and maximum healing at 46% after 2.5 weeks of NPWT were observed. Conclusions Better wound healing was achieved in the NPWT group in comparison to conventional dressings alone. However, suboptimal sternal wound healing by NPWT alone was observed. Removal of sternal wire may improve the effectiveness of NPWT. Successful tertiary closure after NPWT among subjects supports the important bridging role of NPWT in sternal wound healing. Factors causing stagnant sternal wound healing by NPWT alone are discussed.

Aversive Textures and Their Role in Food Rejection

2020 ◽  
Author(s):  
Robert Pellegrino ◽  
Curtis Luckett
Keyword(s):  
Cluster Analysis ◽  
Psychological Factors ◽  
Sensory Attributes ◽  
Prominent Feature ◽  
Large Vocabulary ◽  
Common Food ◽  
Sensory Attribute ◽  
Touch Sensitivity

Texture is a prominent feature in foods and consequently can be the reason a food is accepted or rejected. However, other sensory attributes, such as flavor/taste, aroma, sound and appearance may also lead to the rejection of food and motivations other than unpleasantness exist in unacceptance. To date, these motivations for food rejection have been studied in isolation and their relationships with psychological factors have not been tested. This study measured reasons people reject a food and probed into the specifics of texture rejection. A large U.S. sample (N=473) was asked to rate their motivations for rejecting a food, list foods that were disliked due to unpleasant sensory attributes, specify the unpleasant sensory attribute(s), and complete an assessment of general touch sensitivity. Results showed 94% of individuals reject a food due to its texture, a rate comparable to flavor-based rejection. Looking at the number of foods being rejected, flavor was the most common food attribute, followed by texture and then aroma. From a linguistic standpoint, aversive textures encompass a large vocabulary, larger than liked textures, and the same food may be rejected due to a single or combination of texture terms. Viscosity (e.g. slimy) and hardness (e.g. mushy) are the most common aversive texture types, but through cluster analysis subsets of individuals were identified that are more aversive to other textures. This study emphasizes the role of aversive textures in food rejection and provides many avenues for future investigations.

When Do Auditors Use Specialists' Work to Improve Problem Representations of and Judgments about Complex Estimates?

2017 ◽  
Vol 93 (4) ◽  
pp. 177-202 ◽  
Author(s):  
Emily E. Griffith
Keyword(s):  
Pattern Recognition ◽  
Situational Factors ◽  
Situational Factor ◽  
High Quality ◽  
Quality Audit ◽  
Domain Specific ◽  
Epistemic Motivation ◽  
Specific Expertise ◽  
Problem Representations

ABSTRACT Auditors are more likely to identify misstatements in complex estimates if they recognize problematic patterns among an estimate's underlying assumptions. Rich problem representations aid pattern recognition, but auditors likely have difficulty developing them given auditors' limited domain-specific expertise in this area. In two experiments, I predict and find that a relational cue in a specialist's work highlighting aggressive assumptions improves auditors' problem representations and subsequent judgments about estimates. However, this improvement only occurs when a situational factor (e.g., risk) increases auditors' epistemic motivation to incorporate the cue into their problem representations. These results suggest that auditors do not always respond to cues in specialists' work. More generally, this study highlights the role of situational factors in increasing auditors' epistemic motivation to develop rich problem representations, which contribute to high-quality audit judgments in this and other domains where pattern recognition is important.

scholarly journals Diagnostic Role of 18F-PSMA-1007 PET/CT in Prostate Cancer Staging: A Systematic Review

Diagnostics ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 552
Author(s):  
Salam Awenat ◽  
Arnoldo Piccardo ◽  
Patricia Carvoeiras ◽  
Giovanni Signore ◽  
Luca Giovanella ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Systematic Review ◽  
Diagnostic Accuracy ◽  
Metastatic Disease ◽  
Cancer Staging ◽  
Relevant Information ◽  
Cochrane Library ◽  
Number Of Patients ◽  
Pet Ct

Background: The use of prostate-specific membrane antigen (PSMA)-targeted agents for staging prostate cancer (PCa) patients using positron emission tomography/computed tomography (PET/CT) is increasing worldwide. We performed a systematic review on the role of 18F-PSMA-1007 PET/CT in PCa staging to provide evidence-based data in this setting. Methods: A comprehensive computer literature search of PubMed/MEDLINE and Cochrane Library databases for studies using 18F-PSMA-1007 PET/CT in PCa staging was performed until 31 December 2020. Eligible articles were selected and relevant information was extracted from the original articles by two authors independently. Results: Eight articles (369 patients) evaluating the role of 18F-PSMA-1007 PET/CT in PCa staging were selected. These studies were quite heterogeneous, but, overall, they demonstrated a good diagnostic accuracy of 18F-PSMA-1007 PET/CT in detecting PCa lesions at staging. Overall, higher primary PCa aggressiveness was associated with higher 18F-PSMA-1007 uptake. When compared with other radiological and scintigraphic imaging methods, 18F-PSMA-1007 PET/CT had superior sensitivity in detecting metastatic disease and the highest inter-reader agreement. 18F-PSMA-1007 PET/CT showed similar results in terms of diagnostic accuracy for PCa staging compared with PET/CT with other PSMA-targeted tracers. Dual imaging with multi-parametric magnetic resonance imaging and 18F-PSMA-1007 PET/CT may improve staging of primary PCa. Notably, 18F-PSMA-1007-PET/CT may detect metastatic disease in a significant number of patients with negative standard imaging. Conclusions: 18F-PSMA-1007 PET/CT demonstrated a good accuracy in PCa staging, with similar results compared with other PSMA-targeted radiopharmaceuticals. This method could substitute bone scintigraphy and conventional abdominal imaging for PCa staging. Prospective multicentric studies are needed to confirm these findings.

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