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Wu Y, Shan D, Chen Q, Hu Y. Could the YEARS algorithm be applied to evaluate suspected pulmonary embolism in hospitalized women after cesarean section? Int J Gynaecol Obstet 2024; 167:374-382. [PMID: 38747718 DOI: 10.1002/ijgo.15573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/14/2024] [Accepted: 04/20/2024] [Indexed: 09/25/2024]
Abstract
OBJECTIVE To evaluate the effectiveness of the YEARS algorithm for excluding pulmonary embolism (PE) in hospitalized women after cesarean section. METHODS This retrospective study included postpartum women who gave birth by cesarean section and received computed tomography pulmonary angiography (CTPA) because of suspected PE in the obstetric department between 2015 and 2021. We used the YEARS algorithm in these women retrospectively and assessed its performance to evaluate whether the algorithm could be reliably applied in such cases. RESULTS In all, 225 women were included in the study, of whom 29 (12.9%) women were positive for PE according to the results of CTPA. Upon retrospective application of the YEARS algorithm, 188 (83.6%) women had no YEARS items, while 37 (16.4%) women had YEARS items. Combining the results with D-dimer levels revealed that only 12 (5.3%) women did not need to undergo CTPA, and none showed PE. CONCLUSION The YEARS algorithm could be applied to exclude PE in hospitalized women in the early post-cesarean period. However, the specificity of the YEARS algorithm was very low, and the D-dimer cut-off for ruling out PE in women after early cesarean section should be further studied and optimized.
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Affiliation(s)
- Yuxia Wu
- Department of Ultrasound, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
| | - Dan Shan
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
- Department of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qian Chen
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
- Department of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yayi Hu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
- Department of Gynaecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
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2
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da Silva LO, da Silva MCB, Ribeiro GAS, de Camargo TFO, dos Santos PV, Mendes GDS, de Paiva JPQ, Soares ADS, Reis MRDC, Loureiro RM, Calixto WP. Artificial intelligence-based pulmonary embolism classification: Development and validation using real-world data. PLoS One 2024; 19:e0305839. [PMID: 39167612 PMCID: PMC11338462 DOI: 10.1371/journal.pone.0305839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 06/05/2024] [Indexed: 08/23/2024] Open
Abstract
This paper presents an artificial intelligence-based classification model for the detection of pulmonary embolism in computed tomography angiography. The proposed model, developed from public data and validated on a large dataset from a tertiary hospital, uses a two-dimensional approach that integrates temporal series to classify each slice of the examination and make predictions at both slice and examination levels. The training process consists of two stages: first using a convolutional neural network InceptionResNet V2 and then a recurrent neural network long short-term memory model. This approach achieved an accuracy of 93% at the slice level and 77% at the examination level. External validation using a hospital dataset resulted in a precision of 86% for positive pulmonary embolism cases and 69% for negative pulmonary embolism cases. Notably, the model excels in excluding pulmonary embolism, achieving a precision of 73% and a recall of 82%, emphasizing its clinical value in reducing unnecessary interventions. In addition, the diverse demographic distribution in the validation dataset strengthens the model's generalizability. Overall, this model offers promising potential for accurate detection and exclusion of pulmonary embolism, potentially streamlining diagnosis and improving patient outcomes.
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Affiliation(s)
- Luan Oliveira da Silva
- Department of Radiology, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
- Institute of Informatics (INF), Federal University of Goias, Goiania, Brazil
| | | | | | - Thiago Fellipe Ortiz de Camargo
- Department of Radiology, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
- Electrical, Mechanical & Computer Engineering School, Federal University of Goias, Goiania, Brazil
| | - Paulo Victor dos Santos
- Department of Radiology, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
- Electrical, Mechanical & Computer Engineering School, Federal University of Goias, Goiania, Brazil
| | | | | | | | - Márcio Rodrigues da Cunha Reis
- Department of Radiology, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
- Technology Research and Development Center (GCITE), Federal Institute of Goias, Goias, Brazil
| | | | - Wesley Pacheco Calixto
- Electrical, Mechanical & Computer Engineering School, Federal University of Goias, Goiania, Brazil
- Technology Research and Development Center (GCITE), Federal Institute of Goias, Goias, Brazil
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3
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de Jong CMM, Kroft LJM, van Mens TE, Huisman MV, Stöger JL, Klok FA. Modern imaging of acute pulmonary embolism. Thromb Res 2024; 238:105-116. [PMID: 38703584 DOI: 10.1016/j.thromres.2024.04.016] [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: 11/24/2023] [Revised: 03/16/2024] [Accepted: 04/15/2024] [Indexed: 05/06/2024]
Abstract
The first-choice imaging test for visualization of thromboemboli in the pulmonary vasculature in patients with suspected acute pulmonary embolism (PE) is multidetector computed tomography pulmonary angiography (CTPA) - a readily available and widely used imaging technique. Through technological advancements over the past years, alternative imaging techniques for the diagnosis of PE have become available, whilst others are still under investigation. In particular, the evolution of artificial intelligence (AI) is expected to enable further innovation in diagnostic management of PE. In this narrative review, current CTPA techniques and the emerging technology photon-counting CT (PCCT), as well as other modern imaging techniques of acute PE are discussed, including CTPA with iodine maps based on subtraction or dual-energy acquisition, single-photon emission CT (SPECT), magnetic resonance angiography (MRA), and magnetic resonance direct thrombus imaging (MRDTI). Furthermore, potential applications of AI are discussed.
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Affiliation(s)
- C M M de Jong
- Department of Medicine - Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - L J M Kroft
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - T E van Mens
- Department of Medicine - Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - M V Huisman
- Department of Medicine - Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - J L Stöger
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - F A Klok
- Department of Medicine - Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands.
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Makowska A, Treumann T, Venturini S, Christ M. Pulmonary Embolism in Pregnancy: A Review for Clinical Practitioners. J Clin Med 2024; 13:2863. [PMID: 38792409 PMCID: PMC11121909 DOI: 10.3390/jcm13102863] [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: 03/26/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
Diagnostic and therapeutic decision-making in pregnancy with suspected pulmonary embolism (PE) is challenging. European and other international professional societies have proposed various recommendations that are ambiguous, probably due to the unavailability of randomized controlled trials. In the following sections, we discuss the supporting diagnostic steps and treatments. We suggest a standardized diagnostic work-up in pregnant patients presenting with symptoms of PE to make evidence-based diagnostic and therapeutic decisions. We strongly recommend that clinical decisions on treatment in pregnant patients with intermediate- or high-risk pulmonary embolism should include a multidisciplinary team approach involving emergency physicians, pulmonologists, angiologist, cardiologists, thoracic and/or cardiovascular surgeons, radiologists, and obstetricians to choose a tailored management option including an interventional treatment. It is important to be aware of the differences among guidelines and to assess each case individually, considering the specific views of the different specialties. This review summarizes key concepts of the diagnostics and acute management of pregnant women with suspected PE that are supportive for the clinician on duty.
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Affiliation(s)
- Agata Makowska
- Emergency Department, Cantonal Hospital Lucerne, 6000 Lucerne, Switzerland; (S.V.); (M.C.)
- Cardiology, Hospital Centre of Biel, 2501 Biel, Switzerland
| | - Thomas Treumann
- Radiology, Cantonal Hospital Lucerne, 6000 Lucerne, Switzerland;
| | - Stefan Venturini
- Emergency Department, Cantonal Hospital Lucerne, 6000 Lucerne, Switzerland; (S.V.); (M.C.)
| | - Michael Christ
- Emergency Department, Cantonal Hospital Lucerne, 6000 Lucerne, Switzerland; (S.V.); (M.C.)
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Bhangu G, Murray A, Qayyum A, Goumeniouk N, Goodacre S, Hunt BJ, Touhami O, Tester J, Rees M, Hammerschlag G, Pascoe D, Ronksley PE, King JA, Choi H, McDermott S, Le Gal G, Skeith L. Diagnostic strategies in postpartum individuals with suspected venous thromboembolism: A scoping review. Thromb Res 2024; 236:108-116. [PMID: 38422980 DOI: 10.1016/j.thromres.2024.02.012] [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: 12/19/2023] [Revised: 02/02/2024] [Accepted: 02/13/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND The risk of venous thromboembolism (VTE) is increased postpartum and contributes to important morbidity and mortality. While there have been advances in evaluating diagnostic algorithms for suspected VTE during pregnancy, there is limited data for postpartum individuals. OBJECTIVE We conducted a scoping review to describe and evaluate diagnostic strategies used to investigate suspected VTE in postpartum individuals. METHODS A comprehensive search strategy was conducted in Ovid MEDLINE, Embase and the Cochrane Central Register of Controlled Trials (January 1, 2000-September 30, 2022) to identify original articles that reported on diagnostic strategies in postpartum individuals with suspected VTE. We extracted demographics, clinical decision rules used, D-dimer and imaging completed, including test performance and VTE outcomes. RESULTS A total of 13 studies conducted across 11 countries with separate postpartum data were included for 759 individuals with suspected PE (n = 634) or DVT (n = 125), including unpublished data (n = 251). Among those with suspected PE, computed tomography pulmonary angiography was conducted more commonly (n = 522) than ventilation-perfusion scans (n = 69), with PE positivity rates that ranged from 4 %-27.6 % and 0-50 % across studies, respectively. Among 131 postpartum individuals with suspected PE who had a D-dimer measured, only 4.6 % (6/131) had a negative D-dimer test. For postpartum individuals with suspected DVT, the most common diagnostic test was compression ultrasonography (positivity rate 12.2 %-18.6 %). There were limited retrospective data evaluating the clinical decision rules. CONCLUSIONS There are heterogeneous approaches globally in the diagnosis of suspected postpartum VTE. Limited high-quality data available underscores the need for more robust evidence to inform clinical practice.
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Affiliation(s)
- Gurjeet Bhangu
- Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - Alistair Murray
- Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - Areeb Qayyum
- Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - Natasha Goumeniouk
- Department of Emergency Medicine, University of Calgary, Calgary, AB, Canada
| | - Steve Goodacre
- School of Health and Related Research, University of Sheffield, Sheffield, United Kingdom
| | - Beverley J Hunt
- Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Omar Touhami
- Gynecologic Oncology Division, Department of Obstetrics and Gynecology, Hôpital Charles-LeMoyne, Sherbrooke University, Quebec, Canada
| | - Jodie Tester
- Department of Respiratory Medicine and Sleep Disorders, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Megan Rees
- Department of Respiratory Medicine and Sleep Disorders, Royal Melbourne Hospital, Melbourne, Victoria, Australia; Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Gary Hammerschlag
- Department of Respiratory Medicine and Sleep Disorders, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Diane Pascoe
- Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia; Department of Radiology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Paul E Ronksley
- Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - James A King
- Centre for Health Informatics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Alberta SPOR Support Unit Data Platform, Alberta Health Services, Calgary, Alberta, Canada
| | - Hyun Choi
- Emergency Department, University Hospital Lewisham, London, United Kingdom
| | - Shaunagh McDermott
- Thoracic Imaging Division, Department of Radiology, Massachusetts General Hospital, Boston, MA, United States
| | - Gregoire Le Gal
- Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Leslie Skeith
- Department of Medicine, University of Calgary, Calgary, AB, Canada; Centre for Health Informatics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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Chatterton CG, Fouad LA, Kline JA. Patient counseling for pulmonary embolism requires an individualized approach. Res Pract Thromb Haemost 2024; 8:102407. [PMID: 38694838 PMCID: PMC11060943 DOI: 10.1016/j.rpth.2024.102407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 05/04/2024] Open
Affiliation(s)
- Carolyn G. Chatterton
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Lina A. Fouad
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Jeffrey A. Kline
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, Michigan, USA
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Mainprize JG, Yaffe MJ, Chawla T, Glanc P. Effects of ionizing radiation exposure during pregnancy. Abdom Radiol (NY) 2023; 48:1564-1578. [PMID: 36933026 PMCID: PMC10024285 DOI: 10.1007/s00261-023-03861-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 03/19/2023]
Abstract
PURPOSE To review the effects of ionizing radiation to the conceptus and the relationship to the timing of the exposure during pregnancy. To consider strategies that would mitigate potential harms associated with exposure to ionizing radiation during pregnancy. METHODS Data reported in the peer-reviewed literature on entrance KERMA received from specific radiological examinations were combined with published results from experiment or Monte Carlo modeling of tissue and organ doses per entrance KERMA to estimate total doses that could be received from specific procedures. Data reported in the peer-reviewed literature on dose mitigation strategies, best practices for shielding, consent, counseling and emerging technologies were reviewed. RESULTS For procedures utilizing ionizing radiation for which the conceptus is not included in the primary radiation beam, typical doses are well below the threshold for causing tissue reactions and the risk of induction of childhood cancer is low. For procedures that include the conceptus in the primary radiation field, longer fluoroscopic interventional procedures or multiphase/multiple exposures potentially could approach or exceed thresholds for tissue reactions and the risk of cancer induction must be weighed against the expected risk/benefit of performing (or not) the imaging examination. Gonadal shielding is no longer considered best practice. Emerging technologies such as whole-body DWI/MRI, dual-energy CT and ultralow dose studies are gaining importance for overall dose reduction strategies. CONCLUSION The ALARA principle, considering potential benefits and risks should be followed with respect to the use of ionizing radiation. Nevertheless, as Wieseler et al. (2010) state, "no examination should be withheld when an important clinical diagnosis is under consideration." Best practices require updates on current available technologies and guidelines.
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Affiliation(s)
- James G. Mainprize
- Physical Sciences Platform, Sunnybrook Research Institute, 2075 Bayview Ave., Rm S632/S657, Toronto, ON M4N 3M5 Canada
| | - Martin J. Yaffe
- Physical Sciences Platform, Sunnybrook Research Institute, 2075 Bayview Ave., Rm S632/S657, Toronto, ON M4N 3M5 Canada
- Departments of Medical Biophysics and Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Ave., Rm S657, Toronto, ON M4N 3M5 Canada
| | - Tanya Chawla
- Joint Department of Medical Imaging, Mount Sinai Hospital, University of Toronto, 600 University Avenue, Toronto, ON M5G 1X5 Canada
| | - Phyllis Glanc
- Departments Medical Imaging, Obstetrics & Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Rm MG 160, Toronto, ON M4N 3M5 Canada
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Elameer M, Harris MV, Cox J. Diagnosis of venous thromboembolism in pregnancy: a review of current guidelines. Clin Radiol 2022; 77:904-912. [PMID: 36123200 DOI: 10.1016/j.crad.2022.08.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 06/25/2022] [Accepted: 08/03/2022] [Indexed: 11/20/2022]
Abstract
Venous thromboembolic disease (VTE) is the leading cause of maternal death throughout the developed world. International and national guidance for the diagnosis and management of VTE in pregnancy is varied and limited, which can result in problems in clinical practice. The imaging challenges of VTE in the general population are challenging but become more complex in pregnancy due to the physiological changes in the circulatory system, which alter clinical judgment and test performance. As an additional factor, the relative radiation risks to the mother and fetus arising from diagnostic tests need to be assessed and communicated to the patient in a clear and understandable way. The purpose of this review is fourfold. We propose to review and summarise the current imaging guidelines available for this condition; critically review the evidence base within the current literature; address the issues of test performance of imaging examinations used for VTE in pregnancy; and address the question of radiation risk and how to communicate this information to patients.
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Affiliation(s)
- M Elameer
- Department of Neuroradiology, Royal Victoria Infirmary, Queen Victoria Road, Newcastle-upon-Tyne NE1 4LP, UK
| | - M V Harris
- Department of Radiology, Sunderland Royal Hospital, Kayll Road, Sunderland, SR4 7TP, UK
| | - J Cox
- Department of Radiology, Sunderland Royal Hospital, Kayll Road, Sunderland, SR4 7TP, UK.
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