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Shephard S, Dahlenburg K, Kilgour A. Drawing on lessons learnt in allied health & medicine: Exploring pain science in radiography practice. J Med Imaging Radiat Sci 2024; 55:101343. [PMID: 38016853 DOI: 10.1016/j.jmir.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 11/08/2023] [Indexed: 11/30/2023]
Affiliation(s)
- Sophie Shephard
- School of Allied Health, Exercise and Sports Sciences, Charles Sturt University, Wagga Wagga NSW 2678, Australia.
| | - Kate Dahlenburg
- Radiographer - Department of Medical Imaging, Logan Hospital, Meadowbrook, QLD 4131, Australia
| | - Andrew Kilgour
- Medical Radiations and Assistant Associate Dean, Medical Radiations, School of Health and Biomedical Sciences, RMIT University, PO Box 71, Bundoora VIC 3083, Australia
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2
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Sirén A, Turkia E, Nyman M, Hirvonen J. Accuracy of Intra-Axial Brain Tumor Characterization in the Emergency MRI Reports: A Retrospective Human Performance Benchmarking Pilot Study. Diagnostics (Basel) 2024; 14:1791. [PMID: 39202279 PMCID: PMC11353410 DOI: 10.3390/diagnostics14161791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 08/12/2024] [Accepted: 08/14/2024] [Indexed: 09/03/2024] Open
Abstract
Demand for emergency neuroimaging is increasing. Even magnetic resonance imaging (MRI) is often performed outside office hours, sometimes revealing more uncommon entities like brain tumors. The scientific literature studying artificial intelligence (AI) methods for classifying brain tumors on imaging is growing, but knowledge about the radiologist's performance on this task is surprisingly scarce. Our study aimed to tentatively fill this knowledge gap. We hypothesized that the radiologist could classify intra-axial brain tumors at the emergency department with clinically acceptable accuracy. We retrospectively examined emergency brain MRI reports from 2013 to 2021, the inclusion criteria being (1) emergency brain MRI, (2) no previously known intra-axial brain tumor, and (3) suspicion of an intra-axial brain tumor on emergency MRI report. The tumor type suggestion and the final clinical diagnosis were pooled into groups: (1) glial tumors, (2) metastasis, (3) lymphoma, and (4) other tumors. The final study sample included 150 patients, of which 108 had histopathological tumor type confirmation. Among the patients with histopathological tumor type confirmation, the accuracy of the MRI reports in classifying the tumor type was 0.86 for gliomas against other tumor types, 0.89 for metastases, and 0.99 for lymphomas. We found the result encouraging, given the prolific need for emergency imaging.
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Affiliation(s)
- Aapo Sirén
- Department of Radiology, Turku University Hospital, and University of Turku, Kiinamyllynkatu 4-8, 20520 Turku, Finland
| | - Elina Turkia
- Department of Radiology, Turku University Hospital, and University of Turku, Kiinamyllynkatu 4-8, 20520 Turku, Finland
| | - Mikko Nyman
- Department of Radiology, Turku University Hospital, and University of Turku, Kiinamyllynkatu 4-8, 20520 Turku, Finland
| | - Jussi Hirvonen
- Department of Radiology, Turku University Hospital, and University of Turku, Kiinamyllynkatu 4-8, 20520 Turku, Finland
- Medical Imaging Center, Department of Radiology, Tampere University Hospital, and Tampere University, 33520 Tampere, Finland
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Mehan WA, Shin D, Buch K. Multisystem factors contributing to redundant intracranial vascular imaging in the ED. Emerg Radiol 2024; 31:447-453. [PMID: 38769220 DOI: 10.1007/s10140-024-02240-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 05/02/2024] [Indexed: 05/22/2024]
Abstract
PURPOSE To evaluate the multisystem factors contributing to redundant neurovascular orders in the ED. METHODS This was an IRB-approved, retrospective study, performed at a single institution examining a 5-year history of redundant CTA/MRA head and neck (HN) exams performed in the ED for patients with no documented clinical change in mental status/neurological exam necessitating additional imaging. Factors contributing to redundant ordering including provider experience, synchronous order placement, and radiologist recommendations were examined. Additionally, the impact of duplicative imaging in terms of medical cost and ED length of stay was evaluated. RESULTS 250 patients met inclusion criteria with both CTA/MRA of the HN performed during a single ED encounter (total 500 exams). 190 (76%) redundant exams were not recommended by a radiologist and contributed to an added ED length of stay of 3.6 h on average. Provider experience was not a significant contributing factor. 60 (24%) of redundant exams were recommended by a radiologist and were most frequently CTAs needed to clarify an area of artifact/high-grade stenosis/occlusion on a primary MRA exam. CONCLUSION Evaluation of contributing factors to redundant CTA/MRA HN exams ordering has highlighted multiple associated factors including provider experience, recommendations by radiologists for clarification of MRA findings, as well as systems processes related to synchronous CTA/MRA order placement.
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Affiliation(s)
- William A Mehan
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA
| | - Donghoon Shin
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA
| | - Karen Buch
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.
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Herpe G, Van den Boom M, Najji R, Tasu JP, Beregi JP, Boyer L, Guillevin R. Associations between 24/7 workforce coverage, organizational challenges, and well-being of emergency radiologists: a national survey. Eur Radiol 2024:10.1007/s00330-024-10945-8. [PMID: 39012527 DOI: 10.1007/s00330-024-10945-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/02/2024] [Accepted: 06/10/2024] [Indexed: 07/17/2024]
Abstract
BACKGROUND The last decade has seen a surge in the demand for imaging exams in emergency radiology (ER), necessitating an evolution in organizational systems for departments offering round-the-clock care, while safeguarding patient care quality and physician well-being to prevent burnout. PURPOSE To develop a nationwide overview of ER organizations in France and identify structures that promote job satisfaction. MATERIAL AND METHODS Two surveys were sent to 709 radiological centers across France from March to June 2022, inquiring about organizational aspects and quality of life (QOL), incorporating four validated QOL questionnaires. The organization of each center was mapped, and correlations between respondent characteristics and mental health were analyzed using Pearson's and Wilcoxon tests. RESULTS A total of 284 centers answered the organizational survey, with a response rate of about 41.6%. Among them, there were 32 university hospitals, 208 general hospitals, 2 teaching army hospitals, and 42 private facilities. Of these, night-time operations showed 14% on-site coverage, 12% on-call from home, 69% utilized external teleradiology, and 4% used in-house teleradiology. These trends persisted over weekends and holidays. Regarding the quality of working life, academic, general, and private radiologists are more satisfied with their practice compared to trainees. Depersonalization, part of the three dimensions of burnout, was high in every class, at 60% (n = 210/350). CONCLUSION Outside of university hospitals, most radiology centers in France no longer have on-site radiologists during off hours. Residents are prone to lower job satisfaction and quality of life than more experienced radiologists. CLINICAL RELEVANCE STATEMENT The survey illustrates how French ER is structured, pointing out the escalating significance of teleradiology and noting that radiologists generally experience high job satisfaction while also confronting typical organizational challenges. KEY POINTS The need for continuous radiology coverage comes with unique logistical challenges, especially in ER. Night shifts show a significant reliance on teleradiology services, especially by external companies. Pay, shift patterns, and seniority affect the well-being of emergency radiologists, particularly the residents.
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Affiliation(s)
- Guillaume Herpe
- University Hospital Centre Poitiers, Radiology, Poitiers, Vienne, FR Laboratoire de Mathematiques et Applications Universite de Poitiers, DACTIM MIS TEAM, Chasseneuil, Nouvelle-Aquitaine, France.
| | | | - Rime Najji
- University Hospital Centre Poitiers, Radiology, Poitiers, Vienne, FR Laboratoire de Mathematiques et Applications Universite de Poitiers, DACTIM MIS TEAM, Chasseneuil, Nouvelle-Aquitaine, France
| | | | - Jean-Paul Beregi
- University Hospital Center of Nîmes, Radiology, Nîmes, Gard, France
| | - Louis Boyer
- University Hospital Center of Clermont-Ferrand, Radiology, Clermont-Ferrand, Puy de Dome, France
| | - Rémy Guillevin
- University Hospital Centre Poitiers, Radiology, Poitiers, Vienne, FR Laboratoire de Mathematiques et Applications Universite de Poitiers, DACTIM MIS TEAM, Chasseneuil, Nouvelle-Aquitaine, France
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Vimalesvaran K, Robert D, Kumar S, Kumar A, Narbone M, Dharmadhikari R, Harrison M, Ather S, Novak A, Grzeda M, Gooch J, Woznitza N, Hall M, Shuaib H, Lowe DJ. Assessing the effectiveness of artificial intelligence (AI) in prioritising CT head interpretation: study protocol for a stepped-wedge cluster randomised trial (ACCEPT-AI). BMJ Open 2024; 14:e078227. [PMID: 38885990 PMCID: PMC11184206 DOI: 10.1136/bmjopen-2023-078227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 04/30/2024] [Indexed: 06/20/2024] Open
Abstract
INTRODUCTION Diagnostic imaging is vital in emergency departments (EDs). Accessibility and reporting impacts ED workflow and patient care. With radiology workforce shortages, reporting capacity is limited, leading to image interpretation delays. Turnaround times for image reporting are an ED bottleneck. Artificial intelligence (AI) algorithms can improve productivity, efficiency and accuracy in diagnostic radiology, contingent on their clinical efficacy. This includes positively impacting patient care and improving clinical workflow. The ACCEPT-AI study will evaluate Qure.ai's qER software in identifying and prioritising patients with critical findings from AI analysis of non-contrast head CT (NCCT) scans. METHODS AND ANALYSIS This is a multicentre trial, spanning four diverse sites, over 13 months. It will include all individuals above the age of 18 years who present to the ED, referred for an NCCT. The project will be divided into three consecutive phases (pre-implementation, implementation and post-implementation of the qER solution) in a stepped-wedge design to control for adoption bias and adjust for time-based changes in the background patient characteristics. Pre-implementation involves baseline data for standard care to support the primary and secondary outcomes. The implementation phase includes staff training and qER solution threshold adjustments in detecting target abnormalities adjusted, if necessary. The post-implementation phase will introduce a notification (prioritised flag) in the radiology information system. The radiologist can choose to agree with the qER findings or ignore it according to their clinical judgement before writing and signing off the report. Non-qER processed scans will be handled as per standard care. ETHICS AND DISSEMINATION The study will be conducted in accordance with the principles of Good Clinical Practice. The protocol was approved by the Research Ethics Committee of East Midlands (Leicester Central), in May 2023 (REC (Research Ethics Committee) 23/EM/0108). Results will be published in peer-reviewed journals and disseminated in scientific findings (ClinicalTrials.gov: NCT06027411) TRIAL REGISTRATION NUMBER: NCT06027411.
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Affiliation(s)
- Kavitha Vimalesvaran
- Clinical Scientific Computing, Guy's and St Thomas' NHS Foundation Trust, London, UK
- King's College London, London, UK
| | | | | | | | | | | | - Mark Harrison
- Northumbria Healthcare NHS Foundation Trust, North Shields, UK
| | - Sarim Ather
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Alex Novak
- Emergency Medicine Research Oxford (EMROx), Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | | | | | - Nicholas Woznitza
- Department of Radiology, Homerton University Hospital NHS Foundation Trust, London, UK
- School of Allied & Public Health, Canterbury Christ Church University, Canterbury, UK
| | - Mark Hall
- NHS Greater Glasgow and Clyde, Glasgow, UK
| | - Haris Shuaib
- Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - David J Lowe
- Emergency Medicine, Queen Elizabeth University Hospital, Glasgow, UK
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Mineva G, Culleton E, Falusi T, Ryan D. Outcomes of abdominal pain among children presenting to the Emergency Department of a tertiary hospital in the Republic of Ireland before and during the COVID-19 pandemic. Ir J Med Sci 2024; 193:1033-1041. [PMID: 37851331 DOI: 10.1007/s11845-023-03547-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 10/03/2023] [Indexed: 10/19/2023]
Abstract
BACKGROUND Acute abdominal pain in paediatric patients is a common presentation to the Emergency Department (ED). The COVID-19 pandemic had a significant impact on the health care sector leading to a decline in hospital attendance. AIMS We compare the burden of paediatric abdominal pain 1 year before and after the start of the COVID-19 pandemic in an Irish ED. METHODS A retrospective cohort study was conducted in a tertiary hospital. Ethical approval was obtained. Data was collected from January 1 to June 30, 2019, and 2021. Patients' charts were accessed using Therefore® software. Key variables were extracted and summarised in Microsoft Excel tables. Univariate and multivariate data analysis were conducted in SPSS® software. RESULTS Six hundred sixty-one (2019) and 479 (2021) patient records were evaluated. There was a 28% reduction in case presentations during pandemic months. Age group, sex and attending discipline were similar for both years. Rates of imaging were significantly higher in 2021 (22.5% vs. 10.6%). Overall admission rate was higher in 2021 (37% vs. 25%, p < 0.001). Viral gastroenteritis decreased (13%) and non-specific diagnosis increased (46%) in 2021. Fewer children re-presented in 2021 (13%). CONCLUSIONS The COVID-19 pandemic had an impact on the presentation, investigations and admission rates of abdominal pain in the ED. Our study highlights the need for increased awareness of severe abdominal pain signs and symptoms in paediatric patients and importance for diagnostic accuracy. Improving patient flow through the ED and having clear guidelines for staff and parents can optimise clinical practice and improve patient outcomes.
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Affiliation(s)
- Gabriela Mineva
- University Hospital Limerick, St Nessan's Road, Dooradoyle, Co. Limerick, V94 F858, Ireland.
- School of Medicine, University of Limerick, Limerick, V94 T9PX, Ireland.
| | - Emma Culleton
- University Hospital Limerick, St Nessan's Road, Dooradoyle, Co. Limerick, V94 F858, Ireland
- School of Medicine, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Tolulope Falusi
- School of Medicine, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Damien Ryan
- School of Medicine, University of Limerick, Limerick, V94 T9PX, Ireland
- ALERT, Emergency Department, University Hospital Limerick, St. Nessan's Road, Limerick, Ireland
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Hogan S, Ward J, Sala E. The utility of the abdominal series in the emergency setting: a retrospective review. Int J Emerg Med 2024; 17:6. [PMID: 38178037 PMCID: PMC10768118 DOI: 10.1186/s12245-023-00580-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/25/2023] [Indexed: 01/06/2024] Open
Abstract
PURPOSE The abdominal series (AXR) remains a frequently ordered test in the emergency department (ED), despite existing literature questioning its utility. The aim of this study was to characterize the use of the AXR in the ED by quantifying how often it is ordered and the frequency of subsequent imaging. Additionally, a time estimate in ED associated with the AXR was quantified. We hypothesized that there would be a low clinical utility of the AXR, and long associated time period spent in the ED. METHODS A retrospective audit of AXRs performed in the ED from January to December 2019 was performed. The local picture archiving and communication system (PACS) and electronic medical record were used to collect the variables. RESULTS Of 701 AXRs, 438 (62.4%) were reported normal, and 263 (37.6%) were abnormal. A Chi Squared test showed that the two variables (abdominal series result and follow up imaging completion) were significantly related, with p < 0.001. However, the effect size was small (Nagelkerke R square = 0.022). The average time spent in the ED for these patients was 7.27 h, and the average time between the AXR being ordered and interpreted was 1.31 h. CONCLUSION The majority of AXRs were reported as normal. Our results showed that AXR had a statistically significant, but low clinically significant predictive ability on subsequent imaging ordering. This supports our hypothesis that the AXR is of low clinical utility with respect to the rate of ordering follow up imaging. The AXR also translated to a quantifiable time interval during the patient's stay in ED. Minimizing overuse of the AXR may result in a decrease in patient duration in the ED.
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Affiliation(s)
- Sarah Hogan
- Memorial University of Newfoundland, St. John's, NL, Canada.
| | - Joshua Ward
- Memorial University of Newfoundland, St. John's, NL, Canada
| | - Eric Sala
- Memorial University of Newfoundland, St. John's, NL, Canada
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Turkistani MH, Amer RR. Utilizing Triage Data for Medical Imaging Studies in the Emergency Department. Cureus 2023; 15:e41234. [PMID: 37529516 PMCID: PMC10387579 DOI: 10.7759/cureus.41234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2023] [Indexed: 08/03/2023] Open
Abstract
The use of radiological images is widespread in the emergency department (ED) as physicians commonly rely on them during initial evaluations to confirm diagnoses, contributing to prolonged waiting times. This study aimed to determine the relationship between commonly gathered triage data and the need for radiological imaging. Data were collected from electronic charts that contained routinely collected hospital data at the time of triage in the King Abdulaziz Medical City (KAMC) in Riyadh ED. The binary logistic regression results demonstrated a statistically significant relationship between age and radiological imaging ordered in the ED. Each one-unit increase in age corresponded to a 0.983-fold increase in the likelihood of ordering radiological imaging (odds ratio: 0.983, 95% confidence interval: 0.972-0.995, p = 0.004). In contrast, hypertension, diabetes, and heart failure were independent predictors of the need for radiological imaging in the ED (p >0.05). Patient data that are immediately available during ED triage can be used to predict the need for radiological imaging during ED visits. Such models can identify patients who may require radiological imaging during ED visits and expedite patient disposition.
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Affiliation(s)
| | - Roaa R Amer
- Emergency Department, King Abdulaziz Medical City, Riyadh, SAU
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Li HM, Liu SZ, Yeh LR, Lu NH, Wang LY. Letter to the editor: "Utilization of CT and MRI scanning in Taiwan, 2000-2017". Insights Imaging 2023; 14:83. [PMID: 37184567 PMCID: PMC10185717 DOI: 10.1186/s13244-023-01420-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/13/2023] [Indexed: 05/16/2023] Open
Affiliation(s)
- Hao-Ming Li
- Department of Public Health, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan City, 704, Taiwan.
- Department of Medical Imaging, E-Da Hospital, I-Shou University, No. 1, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan.
- Department of Medical Imaging and Radiological Sciences, College of Medicine, I-Shou University, No. 8, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan.
| | - Shi-Zuo Liu
- Department of Medical Imaging, E-Da Hospital, I-Shou University, No. 1, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan
| | - Lee-Ren Yeh
- Department of Medical Imaging, E-Da Hospital, I-Shou University, No. 1, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan
- Department of Medical Imaging and Radiological Sciences, College of Medicine, I-Shou University, No. 8, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan
- School of Medicine, College of Medicine, I-Shou University, No. 8, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan
| | - Nan-Han Lu
- Department of Medical Imaging, E-Da Hospital, I-Shou University, No. 1, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan
- School of Medicine, College of Medicine, I-Shou University, No. 8, Yida Road, Yanchao District, Kaohsiung City, 824, Taiwan
- Department of Pharmacy, Tajen University, No. 20, Weixin Rd., Yanpu Township, Pingtung County, 907, Taiwan
| | - Liang-Yi Wang
- Department of Public Health, College of Medicine, National Cheng Kung University, No. 138, Sheng Li Road, Tainan City, 704, Taiwan
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Rogan A, Sik A, Dickinson E, Patel V, Peckler B, McQuade D, Larsen PD. Diagnostic performance of S100B as a rule-out test for intracranial pathology in head-injured patients presenting to the emergency department who meet NICE Head Injury Guideline criteria for CT-head scan. Emerg Med J 2023; 40:159-166. [PMID: 36323496 DOI: 10.1136/emermed-2022-212549] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/27/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND Traumatic brain injury is a common ED presentation. CT-head utilisation is escalating, exacerbating resource pressure in the ED. The biomarker S100B could assist clinicians with CT-head decisions by excluding intracranial pathology. Diagnostic performance of S100B was assessed in patients meeting National Institute of Health and Clinical Excellence Head Injury Guideline (NICE HIG) criteria for CT-head within 6 and 24 hours of injury. METHODS This multicentre prospective observational study included adult patients presenting to the ED with head injuries between May 2020 and June 2021. Informed consent was obtained from patients meeting NICE HIG CT-head criteria. A venous blood sample was collected and serum was tested for S100B using a Cobas Elecsys-S100 module; >0.1 µg/mL was the threshold used to indicate a positive test. Intracranial pathology reported on CT-head scan by the duty radiologist was used as the reference standard to review diagnostic performance. RESULTS This study included 265 patients of whom 35 (13.2%) had positive CT-head findings. Within 6 hours of injury, sensitivity of S100B was 93.8% (95% CI 69.8% to 99.8%) and specificity was 30.8% (22.6% to 40.0%). Negative predictive value (NPV) was 97.3% (95% CI 84.2% to 99.6%) and area under the curve (AUC) was 0.73 (95% CI 0.61 to 0.85; p=0.003). Within 24 hours of injury, sensitivity was 82.9% (95% CI 66.4% to 93.44%) and specificity was 43.0% (95% CI 36.6% to 49.7%). NPV was 94.29% (95% CI 88.7% to 97.2%) and AUC was 0.65 (95% CI 0.56 to 0.74; p=0.046). Theoretically, use of S100B as a rule-out test would have reduced CT-head scans by 27.1% (95% CI 18.9% to 36.8%) within 6 hours and 37.4% (95% CI 32.0% to 47.2%) within 24 hours. The risk of missing a significant injury with this approach would have been 0.75% (95% CI 0.0% to 2.2%) within 6 hours and 2.3% (95% CI 0.5% to 4.1%) within 24 hours. CONCLUSION Within 6 hours of injury, S100B performed well as a diagnostic test to exclude significant intracranial pathology in low-risk patients presenting with head injury. In theory, if used in addition to NICE HIGs, CT-head rates could reduce by one-quarter with a potential miss rate of <1%.
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Affiliation(s)
- Alice Rogan
- Department of Surgery and Anaesthesia, University of Otago Wellington, Wellington, New Zealand .,Emergency Department, Wellington Regional Hospital, Newtown, New Zealand
| | - Annabelle Sik
- Department of Surgery and Anaesthesia, University of Otago Wellington, Wellington, New Zealand
| | - Emily Dickinson
- Emergency Department, Wellington Regional Hospital, Newtown, New Zealand
| | - Vimal Patel
- Emergency Department, Hutt Valley District Health Board, Lower Hutt, New Zealand
| | - Brad Peckler
- Emergency Department, Wellington Regional Hospital, Newtown, New Zealand
| | - David McQuade
- Department of Surgery and Anaesthesia, University of Otago Wellington, Wellington, New Zealand.,Emergency Department, Wellington Regional Hospital, Newtown, New Zealand
| | - Peter D Larsen
- Department of Surgery and Anaesthesia, University of Otago Wellington, Wellington, New Zealand
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Christensen EW, Liu CM, Duszak R, Hirsch JA, Swan TL, Rula EY. Association of State Share of Nonphysician Practitioners With Diagnostic Imaging Ordering Among Emergency Department Visits for Medicare Beneficiaries. JAMA Netw Open 2022; 5:e2241297. [PMID: 36355374 PMCID: PMC9650604 DOI: 10.1001/jamanetworkopen.2022.41297] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
IMPORTANCE The use of nonphysician practitioners (NPPs) in the emergency department (ED) continues to expand, yet little is known about associations between NPPs and ED imaging use. OBJECTIVE To investigate whether the state share of ED visits for which an NPP was the clinician of record is associated with imaging studies ordered, given that state NPP share is associated with state-level NPP scopes of practice. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study compared diagnostic imaging ordering patterns associated with ED visits based on 2005-2020 Medicare claims for a nationally representative 5% sample of fee-for-service beneficiaries. For all 50 states and the District of Columbia, the state NPP share of ED visits by year was used to represent state-specific practice patterns for NPPs and physicians and how those patterns have evolved over time. The analysis controlled for patient demographic characteristics, Charlson Comorbidity Index scores, ED visit severity, year, and principal diagnosis. EXPOSURES The share of ED visits in each state in each year (state share) for which an NPP was the evaluation and management clinician. MAIN OUTCOMES AND MEASURES The main outcomes were the number and modality of imaging studies associated with ED visits. Analyses were by logistic regression and generalized linear model with γ-distribution and log-link function. RESULTS Among 16 922 274 ED visits, 60.0% involved women, and patients' mean (SD) age was 70.3 (16.1) years. The share of all ED visits with an NPP as the clinician increased from 6.1% in 2005 to 16.6% in 2020. Compared with no NPPs, the presence of NPPs in the ED was associated with 5.3% (95% CI, 5.1%-5.5%) more imaging studies per ED visit, including a 3.4% (95% CI, 3.2%-3.5%) greater likelihood of any imaging order per ED visit and 2.2% (95% CI, 2.0%-2.3%) more imaging studies ordered per visit involving imaging. CONCLUSIONS AND RELEVANCE In this study, use of NPPs in the ED was associated with higher imaging use compared with the use of only physicians in the ED. Although expanded use of NPPs in the ED may improve patient access, the costs and radiation exposure associated with more imaging warrants additional study.
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Affiliation(s)
- Eric W. Christensen
- Harvey L. Neiman Health Policy Institute, Reston, Virginia
- Health Services Management, University of Minnesota, St Paul
| | - Chi-Mei Liu
- Harvey L. Neiman Health Policy Institute, Reston, Virginia
| | - Richard Duszak
- Department of Radiology, University of Mississippi Medical Center, Jackson
| | - Joshua A. Hirsch
- Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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Sahlander F, Bensing S, Falhammar H. Congenital adrenal hyperplasia is a very rare cause of adrenal incidentalomas in Sweden. Front Endocrinol (Lausanne) 2022; 13:1017303. [PMID: 36545328 PMCID: PMC9760763 DOI: 10.3389/fendo.2022.1017303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Undiagnosed congenital adrenal hyperplasia (CAH) can cause adrenal incidentalomas, but the frequency is unclear. OBJECTIVES This study aimed to investigate the prevalence of CAH in a population with adrenal incidentalomas and report the clinical characterization. MATERIAL AND METHODS This was a prospective study performed at a regional hospital from 2016 to 2021. Patients with adrenal incidentalomas were investigated with an adrenocorticotropic hormone (ACTH)-stimulation test in addition to hormonal workup. Serum cortisol and 17-hydroxyprogesterone (17OHP) were analyzed. Individuals with a basal or stimulated 17OHP ≥30 nmol/L were classified as suspicious non-classic CAH, and a CYP21A2-gene analysis was performed in these subjects. RESULTS In total, 320 individuals with adrenal incidentalomas were referred to the center, and of these individuals, an ACTH-stimulation test was performed in 222 (median age, 67 (24-87) years; 58.6% women; and 11.7% with bilateral lesions). None of the individuals presented a basal 17OHP ≥30 nmol/L, but there were 8 (3.6%) who did after ACTH stimulation. Four of these subjects (50%) presented bilateral lesions, and the tumor size was larger compared to that of the individuals with a stimulated 17OHP <30 nmol/L (median, 38 (19-66) vs. 19 (11-85) mm, p=0.001). A CYP21A2 variation (p.Val282Leu) was detected in one of the eight subjects with a stimulated 17OHP ≥30 nmol/L, i.e., the patient was a heterozygotic carrier. None of the eight subjects presented with cortisol insufficiency or clinical signs of hyperandrogenism. CONCLUSIONS The prevalence of non-classic CAH in an adrenal incidentaloma cohort was 3.6% based on stimulated 17OHP and 0% based on gene analysis. CAH should be considered in AI management in selected cases and confirmed by genetic analysis.
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Affiliation(s)
- Fredrik Sahlander
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Medicine, Falu Hospital, Falun, Sweden
- Center for Clinical Research Dalarna-Uppsala University, Falun, Sweden
- *Correspondence: Fredrik Sahlander,
| | - Sophie Bensing
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Endocrinology, Karolinska University Hospital, Stockholm, Sweden
| | - Henrik Falhammar
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Endocrinology, Karolinska University Hospital, Stockholm, Sweden
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13
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Kundisch A, Hönning A, Mutze S, Kreissl L, Spohn F, Lemcke J, Sitz M, Sparenberg P, Goelz L. Deep learning algorithm in detecting intracranial hemorrhages on emergency computed tomographies. PLoS One 2021; 16:e0260560. [PMID: 34843559 PMCID: PMC8629230 DOI: 10.1371/journal.pone.0260560] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/26/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Highly accurate detection of intracranial hemorrhages (ICH) on head computed tomography (HCT) scans can prove challenging at high-volume centers. This study aimed to determine the number of additional ICHs detected by an artificial intelligence (AI) algorithm and to evaluate reasons for erroneous results at a level I trauma center with teleradiology services. METHODS In a retrospective multi-center cohort study, consecutive emergency non-contrast HCT scans were analyzed by a commercially available ICH detection software (AIDOC, Tel Aviv, Israel). Discrepancies between AI analysis and initial radiology report (RR) were reviewed by a blinded neuroradiologist to determine the number of additional ICHs detected and evaluate reasons leading to errors. RESULTS 4946 HCT (05/2020-09/2020) from 18 hospitals were included in the analysis. 205 reports (4.1%) were classified as hemorrhages by both radiology report and AI. Out of a total of 162 (3.3%) discrepant reports, 62 were confirmed as hemorrhages by the reference neuroradiologist. 33 ICHs were identified exclusively via RRs. The AI algorithm detected an additional 29 instances of ICH, missed 12.4% of ICH and overcalled 1.9%; RRs missed 10.9% of ICHs and overcalled 0.2%. Many of the ICHs missed by the AI algorithm were located in the subarachnoid space (42.4%) and under the calvaria (48.5%). 85% of ICHs missed by RRs occurred outside of regular working-hours. Calcifications (39.3%), beam-hardening artifacts (18%), tumors (15.7%), and blood vessels (7.9%) were the most common reasons for AI overcalls. ICH size, image quality, and primary examiner experience were not found to be significantly associated with likelihood of incorrect AI results. CONCLUSION Complementing human expertise with AI resulted in a 12.2% increase in ICH detection. The AI algorithm overcalled 1.9% HCT. TRIAL REGISTRATION German Clinical Trials Register (DRKS-ID: DRKS00023593).
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Affiliation(s)
- Almut Kundisch
- Center for Emergency Training, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Alexander Hönning
- Center for Clinical Research, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Sven Mutze
- Department of Radiology and Neuroradiology, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany.,Institute for Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | - Lutz Kreissl
- Department of Radiology and Neuroradiology, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Frederik Spohn
- Department of Radiology and Neuroradiology, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Johannes Lemcke
- Department of Neurosurgery, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Maximilian Sitz
- Department of Neurosurgery, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Paul Sparenberg
- Department of Neurology, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Leonie Goelz
- Department of Radiology and Neuroradiology, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany.,Institute for Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
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14
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The effective and water-equivalent diameters as geometrical size functions for estimating CT dose in the thoracic, abdominal, and pelvic regions. POLISH JOURNAL OF MEDICAL PHYSICS AND ENGINEERING 2021. [DOI: 10.2478/pjmpe-2021-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract
Purpose: The aim of this work was to establish the relationships of patient size in terms of effective diameter (Deff) and water-equivalent diameter (Dw) with lateral (LAT) and anterior-posterior (AP) dimensions in order to predict the specific patient dose for thoracic, abdominal, and pelvic computed tomography (CT) examinations.
Methods: A total of 47 thoracic images, 79 abdominal images, and 50 pelvic images were analyzed in this study. The patient’s images were retrospectively collected from Dr. Kariadi and Kensaras Hospitals, Semarang, Indonesia. The slices measured were taken from the middle of the scan range. The calculations of patient sizes (LAT, AP, Deff, and Dw) were automatically performed by IndoseCT 20b software. Deff and Dw were plotted as functions of LAT, AP, and AP+LAT. In addition, Dw was plotted as a function of Deff.
Results: Strong correlations of Deff and Dw with LAT, AP, and AP+LAT were found. Stronger correlations were found in the Deff curves (R2 > 0.9) than in the Dw curves (R2 > 0.8). It was found that the average Deff was higher than the average Dw in the thoracic region, the average values were similar in the abdominal and pelvic regions.
Conclusion: The current study extended the study of the relationships between Deff and Dw and the basic geometric diameter LAT, AP, and AP+LAT beyond those previously reported by AAPM. We evaluated the relationships for three regions, i.e. thoracic, abdominal, and pelvic regions. Based on our findings, it was possible to estimate Deff and Dw from only the LAT or AP dimension.
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15
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Macri F, Niu BT, Erdelyi S, Mayo JR, Khosa F, Nicolaou S, Brubacher JR. Impact of 24/7 Onsite Emergency Radiology Staff Coverage on Emergency Department Workflow. Can Assoc Radiol J 2021; 73:249-258. [PMID: 34229465 DOI: 10.1177/08465371211023861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Assess the impact of 24/7/365 emergency trauma radiology (ETR) coverage on Emergency Department (ED) patient flow in an urban, quaternary-care teaching hospital. METHODS Patient ED visit and imaging information were extracted from the hospital patient care information system for 2008 to 2018. An interrupted time-series approach with a comparison group was used to study the impact of 24/7/365 ETR on average monthly ED length of stay (ED-LOS) and Emergency Physician to disposition time (EP-DISP). Linear regression models were fit with abrupt and permanent interrupts for 24/7/365 ETR, a coefficient for comparison series and a SARIMA error term; subgroup analyses were performed by patient arrival time, imaging type and chief complaint. RESULTS During the study period, there were 949,029 ED visits and 739,796 diagnostic tests. Following implementation of 24/7/365 coverage, we found a significant decrease in EP-DISP time for patients requiring only radiographs (-29 min;95%CI:-52,-6) and a significant increase in EP-DISP time for major trauma patients (46 min;95%CI:13,79). No significant change in patient throughput was observed during evening hours for any patient subgroup. For overnight patients, there was a reduction in EP-DISP for patients with symptoms consistent with stroke (-78 min;95%CI:-131,-24) and for high acuity patients who required imaging (-33 min;95%CI:-57,-10). Changes in ED-LOS followed a similar pattern. CONCLUSIONS At our institution, 24/7/365 in-house ETR staff radiology coverage was associated with improved ED flow for patients requiring only radiographs and for overnight stroke and high acuity patients. Major trauma patients spent more time in the ED, perhaps reflecting the required multidisciplinary management.
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Affiliation(s)
- Francesco Macri
- Department of Emergency and Trauma Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada.,Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Bonnie T Niu
- Department of Emergency and Trauma Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada.,Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Shannon Erdelyi
- Department of Emergency Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - John R Mayo
- Department of Emergency and Trauma Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada.,Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Faisal Khosa
- Department of Emergency and Trauma Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada.,Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Savvas Nicolaou
- Department of Emergency and Trauma Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada.,Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jeffrey R Brubacher
- Department of Emergency Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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Maxwell S, Ha NT, Bulsara MK, Doust J, Mcrobbie D, O'Leary P, Slavotinek J, Moorin R. Increasing use of CT requested by emergency department physicians in tertiary hospitals in Western Australia 2003-2015: an analysis of linked administrative data. BMJ Open 2021; 11:e043315. [PMID: 33664075 PMCID: PMC7934721 DOI: 10.1136/bmjopen-2020-043315] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE This study aimed to examine trends in number of CT scans requested by tertiary emergency department (ED) physicians in Western Australia (WA) from 2003 to 2015 across broad demographic and presentation characteristics, anatomical areas and presented symptoms. DESIGN An observational cross-sectional study over study period from 2003 to 2015. SETTING Linked administrative health service data at individual level from WA. PARTICIPANTS A total of 1 666 884 tertiary hospital ED presentations of people aged 18 years or older were included in this study MAIN OUTCOME MEASURE: Number of CT scans requested by tertiary ED physicians in an ED presentation. METHODS Poisson regression models were used to assess variation and trends in number of CT scans requested by ED physicians across demographic characteristics, clinical presentation characteristics and anatomical areas. RESULTS Over the entire study duration, 71 per 1000 ED episodes had a CT requested by tertiary ED physicians. Between 2003 and 2015, the rate of CT scanning almost doubled from 58 to 105 per 1000 ED presentations. After adjusted for all observed characteristics, the rate of CT scans showed a downward trend from 2009 to 2011 and subsequent increase. Males, older individuals, those attending ED as a result of pain, those with neurological symptoms or injury or with higher priority triage code were the most likely to have CT requested by tertiary ED physicians. CONCLUSIONS Noticeable changes in the number of CTs requested by tertiary ED physicians corresponded to the time frame of major health reforms happening within WA and nationally.
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Affiliation(s)
- Susannah Maxwell
- Health Economics and Data Analytics, Curtin University Bentley Campus, Perth, Western Australia, Australia
| | - Ninh Thi Ha
- Health Economics and Data Analytics, Curtin University Bentley Campus, Perth, Western Australia, Australia
| | - Max K Bulsara
- Institute for Health and Rehabilitation Research, University of Notre Dame, Fremantle, Western Australia, Australia
- Centre for Health Services Research, School of Population and Global Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Jenny Doust
- Centre for Longitudinal and Life Course Research, School of Public Health, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Donald Mcrobbie
- School of Physical Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Peter O'Leary
- Health Economics and Data Analytics, Curtin University Bentley Campus, Perth, Western Australia, Australia
- Obstetrics and Gynaecology Medical School, Faculty of Health and Medical Sciences, The University of Western Australia, Perth, Western Australia, Australia
- PathWest Laboratory Medicine, QE2 Medical Centre, Nedlands, Western Australia, Australia
| | - John Slavotinek
- Flinders Medical Centre, Bedford Park, South Australia, Australia
- College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
| | - Rachael Moorin
- Health Economics and Data Analytics, Curtin University Bentley Campus, Perth, Western Australia, Australia
- Centre for Health Services Research, School of Population and Global Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, Crawley, Western Australia, Australia
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Klein RP, Velan G, Young N, Shetty A, Moscova M. Quality use of diagnostic imaging in trauma, and the impact on emergency medical practice-a retrospective clinical audit. Emerg Radiol 2021; 28:761-770. [PMID: 33638062 DOI: 10.1007/s10140-021-01921-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/21/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE The current study aimed to evaluate the appropriateness of the decisions made to order diagnostic imaging for emergency trauma patients. METHODS A retrospective audit of 642 clinical decisions for 370 non-consecutive trauma cases was conducted at a level 1 adult trauma centre. Radiographs and computed tomography investigations were compared for compliance with the American College of Radiology/European Society of Radiology (ACR/ESR) imaging guidelines. The non-compliant imaging orders were evaluated for the following medical officer ranks: Junior Medical Officer (JMO), Senior Resident Medical Officer (SRMO), Emergency Medicine Registrar (EMR) and Consultants/Career Medical Officer (CMO). The time of imaging order (day/evening or night shift), whether the imaging led to conservative or surgical patient management, and whether the imaging order decisions led to a change in the clinical management of the patient were also considered. RESULTS Non-compliance with the ACR/ESR guidelines was low. At least half of non-compliant decisions made by each level of medical officer resulted in a change in patient management. In total, 11 (65%), 25 (53%), 12 (63%) and 11 (52%) of non-compliant imaging orders placed by JMOs, SRMOs, EMRs and Consultants, respectively, resulted in change of patient management. JMOs and SRMOs ordered a significantly higher proportion of non-compliant imaging studies for conservatively managed patients in comparison to surgically managed patients. CONCLUSION This study highlighted that most non-compliant imaging orders benefited the patient.
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Affiliation(s)
- Robert Peter Klein
- Faculty of Medicine & Health, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Gary Velan
- Faculty of Medicine & Health, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Noel Young
- Faculty of Medicine & Health, University of New South Wales, Sydney, NSW, 2052, Australia.,Department of Radiology, Westmead Hospital, Darcy Rd, Westmead, NSW, 2145, Australia
| | - Amith Shetty
- Department of Emergency Medicine, Westmead Hospital, Darcy Rd, Westmead, NSW, 2145, Australia
| | - Michelle Moscova
- Faculty of Medicine & Health, University of New South Wales, Sydney, NSW, 2052, Australia.
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18
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Schnelle MRT-Sequenzen für die akute neurologische Abklärung. Notf Rett Med 2020. [DOI: 10.1007/s10049-020-00803-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Boissady E, de La Comble A, Zhu X, Hespel AM. Artificial intelligence evaluating primary thoracic lesions has an overall lower error rate compared to veterinarians or veterinarians in conjunction with the artificial intelligence. Vet Radiol Ultrasound 2020; 61:619-627. [PMID: 32996208 DOI: 10.1111/vru.12912] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/30/2020] [Accepted: 07/12/2020] [Indexed: 12/11/2022] Open
Abstract
To date, deep learning technologies have provided powerful decision support systems to radiologists in human medicine. The aims of this retrospective, exploratory study were to develop and describe an artificial intelligence able to screen thoracic radiographs for primary thoracic lesions in feline and canine patients. Three deep learning networks using three different pretraining strategies to predict 15 types of primary thoracic lesions were created (including tracheal collapse, left atrial enlargement, alveolar pattern, pneumothorax, and pulmonary mass). Upon completion of pretraining, the algorithms were provided with over 22 000 thoracic veterinary radiographs for specific training. All radiographs had a report created by a board-certified veterinary radiologist used as the gold standard. The performances of all three networks were compared to one another. An additional 120 radiographs were then evaluated by three types of observers: the best performing network, veterinarians, and veterinarians aided by the network. The error rates for each of the observers was calculated as an overall and for the 15 labels and were compared using a McNemar's test. The overall error rate of the network was significantly better than the overall error rate of the veterinarians or the veterinarians aided by the network (10.7% vs 16.8% vs17.2%, P = .001). The network's error rate was significantly better to detect cardiac enlargement and for bronchial pattern. The current network only provides help in detecting various lesion types and does not provide a diagnosis. Based on its overall very good performance, this could be used as an aid to general practitioners while waiting for the radiologist's report.
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Affiliation(s)
| | | | - Xiaojuan Zhu
- Office of Information Technology, The University of Tennessee, Knoxville, Tennessee, USA
| | - Adrien-Maxence Hespel
- Department of Small Animal Clinical Science, University of Tennessee, Knoxville, Tennessee, USA
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Abstract
CLINICAL/METHODICAL ISSUE Neurological symptoms account for approximately 30% of emergency room (ER) visits. Clinical outcome often relies on a timely diagnosis and treatment initiation. Clinical imaging requirements are fast availability and high diagnostic value. STANDARD RADIOLOGICAL METHODS Availability and quality of magnetic resonance imaging (MRI) in emergency rooms outside of core hours are limited compared to computed tomography (CT). Common reasons are infrastructural accessibility (hospitals using outpatient radiology centers), a lack of experienced and qualified staff and high patient compliance requirements. However, in a neurological emergency setting, MRI may show relevant advantages over CT in certain areas, such as diagnosis of stroke. METHODOLOGICAL INNOVATIONS Advances in MRI technology have led to shorter exam times and robust motion reduction strategies. Common fast sequences and time reduction techniques for imaging of neurological emergencies are presented in this article. ACHIEVEMENTS Recommendations for specific sequences or techniques depend on the institute's MRI hardware and software components. If available, parallel imaging is highly recommended for imaging of neurological emergencies. PRACTICAL RECOMMENDATIONS Imaging of neurological emergencies requires fast, significant and motion insensitive standard acquisitions. Additional sequences should be acquired dependent on clinical and standard protocol imaging findings. An MRI emergency protocol is introduced for the most common neurologic emergencies including recommendations for fast MRI sequences and techniques for imaging time reduction.
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21
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Elchoufi D, Duszak R, Balthazar P, Hanna TN, Sadigh G. Increasing emergency department utilization of brain imaging in patients with primary brain cancer. Emerg Radiol 2020; 28:223-231. [PMID: 32803458 DOI: 10.1007/s10140-020-01836-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/03/2020] [Indexed: 12/16/2022]
Abstract
PURPOSE To study changing emergency department (ED) brain imaging utilization in patients with primary brain cancers. METHODS Using 2006-2014 data from the Nationwide Emergency Department Sample (NEDS), we identified all patients with primary brain cancers visiting EDs and evaluated trends of head CT and brain MRI utilization. Multivariable logistic regression analyses were used to determine patient- and hospital-specific factors associated with brain imaging utilization. RESULTS A weighted cohort of 40,862 ED visits were included (mean age 55; 54% male), increasing from 3932 in 2006 to 5625 in 2014 (+ 43%). A total of 14.4% underwent brain imaging, with 13.2% undergoing CT, 2.3% undergoing MRI, and 1.1% undergoing both modalities. Between 2006 and 2014, there was a 104% increase in the rate of ED brain imaging (from 9.7% in 2006 to 19.8% in 2014). Factors associated with higher utilization of ED brain imaging in adults were non-teaching hospital status and Midwest and Northeast hospital regions (compared with the West). In pediatric patients, higher utilization was associated with older age, higher median household income of patient's ZIP code, and visits in rural, non-teaching hospitals located in the Midwest, South, and Northeast (compared with the West). CONCLUSION In US patients with primary brain cancer, the number of ED visits increased annually, and the utilization of ED head imaging examinations doubled in a recent 9-year period. A variety of sociodemographic characteristics are associated with a higher likelihood of imaging in both adult and pediatric patients.
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Affiliation(s)
- Deema Elchoufi
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, Suite BG27, Atlanta, GA, 30322, USA
| | - Richard Duszak
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, Suite BG27, Atlanta, GA, 30322, USA
| | - Patricia Balthazar
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, Suite BG27, Atlanta, GA, 30322, USA
| | - Tarek N Hanna
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, Suite BG27, Atlanta, GA, 30322, USA
| | - Gelareh Sadigh
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, Suite BG27, Atlanta, GA, 30322, USA.
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Bhayana R, Wang CD, Menezes RJ, Bartlett ES, Choi J. Optimising after-hours workflow of computed tomography orders in the emergency department. BMJ Open Qual 2020; 9:bmjoq-2020-000969. [PMID: 32665302 PMCID: PMC7365424 DOI: 10.1136/bmjoq-2020-000969] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 06/08/2020] [Accepted: 06/17/2020] [Indexed: 12/30/2022] Open
Abstract
Ordering and protocolling CT scans after-hours from the emergency department (ED) at our institution previously required discussion between the ED physician and radiology resident, which led to workflow inefficiency. Our intervention consisted of creating an electronic list of CT requests that radiology residents would monitor. Radiology protocolled straightforward requests and contacted the ordering physician for more details when required. We aimed to improve workflow efficiency, increase provider satisfaction and reduce CT turnaround time without significantly affecting CT utilisation. Plan-do-study-act cycles were used to plan and evaluate the intervention. The intervention was initiated on weekday evenings and then expanded to weekend hours after an interim analysis. Qualitative outcomes were measured via electronic survey, and quantitative outcomes were collected from administrative data and analysed via control charts and other statistical methods. Survey response was high from ED physicians (76%, n=82/108) and radiology residents (79%, n=30/38). After the intervention, the majority of ED staff and radiology residents perceived improved workflow efficiency (96.3%, 73.3%), radiology residents noted a subjective decrease in disruptions (83.3%) and most ED staff felt that scans were performed more quickly (84.1%). Radiology residents received fewer pages per shift, adjusted for scan volume. There was a reduction in time from order entry to protocol on weekday shifts only, with no statistically significant effect on time from order entry to scan. Segmented regression analysis demonstrated a background increase in utilisation over time (0.7–2.0 CT/100 ED visits/year, p<0.0005), but the intervention itself did not contribute to an overall increase in CT utilisation. In conclusion, our intervention led to improved perceived workflow efficiency and reduced pages. Scans were protocoled more quickly on weekdays, but turnaround times were otherwise not significantly affected by the intervention. Background CT utilisation increased over time, but this increase was not attributable to our intervention.
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Affiliation(s)
- Rajesh Bhayana
- Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
| | - Chenhan D Wang
- Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
| | - Ravi J Menezes
- Department of Medical Imaging, University Health Network, Toronto, Ontario, Canada
| | - Eric S Bartlett
- Department of Medical Imaging, University Health Network, Toronto, Ontario, Canada
| | - Joseph Choi
- Emergency Medicine, University Health Network, Toronto, Ontario, Canada
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