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Glessgen CG, Boulougouri M, Vallée JP, Noble S, Platon A, Poletti PA, Paul JF, Deux JF. Artificial intelligence-based opportunistic detection of coronary artery stenosis on aortic computed tomography angiography in emergency department patients with acute chest pain. EUROPEAN HEART JOURNAL OPEN 2023; 3:oead088. [PMID: 37744954 PMCID: PMC10516619 DOI: 10.1093/ehjopen/oead088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/08/2023] [Accepted: 09/06/2023] [Indexed: 09/26/2023]
Abstract
Aims To evaluate a deep-learning model (DLM) for detecting coronary stenoses in emergency room patients with acute chest pain (ACP) explored with electrocardiogram-gated aortic computed tomography angiography (CTA) to rule out aortic dissection. Methods and results This retrospective study included 217 emergency room patients (41% female, mean age 67.2 years) presenting with ACP and evaluated by aortic CTA at our institution. Computed tomography angiography was assessed by two readers, who rated the coronary arteries as 1 (no stenosis), 2 (<50% stenosis), or 3 (≥50% stenosis). Computed tomography angiography was categorized as high quality (HQ), if all three main coronary arteries were analysable and low quality (LQ) otherwise. Curvilinear coronary images were rated by a DLM using the same system. Per-patient and per-vessel analyses were conducted. One hundred and twenty-one patients had HQ and 96 LQ CTA. Sensitivity, specificity, positive predictive value, negative predictive value (NPV), and accuracy of the DLM in patients with high-quality image for detecting ≥50% stenoses were 100, 62, 59, 100, and 75% at the patient level and 98, 79, 57, 99, and 84% at the vessel level, respectively. Sensitivity was lower (79%) for detecting ≥50% stenoses at the vessel level in patients with low-quality image. Diagnostic accuracy was 84% in both groups. All 12 patients with acute coronary syndrome (ACS) and stenoses by invasive coronary angiography (ICA) were rated 3 by the DLM. Conclusion A DLM demonstrated high NPV for significant coronary artery stenosis in patients with ACP. All patients with ACS and stenoses by ICA were identified by the DLM.
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Affiliation(s)
- Carl G Glessgen
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Marianthi Boulougouri
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Jean-Paul Vallée
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Stéphane Noble
- Department of Cardiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Alexandra Platon
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Pierre-Alexandre Poletti
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Jean-François Paul
- Department of Radiology, Cardiac Imaging, Institut Mutualiste Montsouris, Paris 75014, France
| | - Jean-François Deux
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
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2
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Budeanu RG, Broemmer C, Budeanu AR, Pop M. Comparing the Diagnostic Performance of ECG Gated versus Non-Gated CT Angiography in Ascending Aortic Dissection: A GRRAS Study. Tomography 2022; 8:2426-2434. [PMID: 36287800 PMCID: PMC9609484 DOI: 10.3390/tomography8050201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/17/2022] [Accepted: 09/26/2022] [Indexed: 11/27/2022] Open
Abstract
Rationale and Objective: Thoracic CT angiography (CTA) for ascending aortic dissection, a life-threatening emergency, is performed routinely without Electrocardiographic (ECG) gating, therefore allowing the apparition of a pulsation artefact. We aimed to evaluate and compare the diagnostic performance, the inter and intra-reporter agreement of ECG gated CTA and non-ECG gated CTA for detecting ascending aortic dissection, considering their training level. Our hypothesis is that ECG gated CTA has superior diagnostic accuracy for ascending aortic dissection compared to non-gated CTA. Materials and Methods: We collected data using 24 questions survey using clinically validated CT examinations. Sixty-six respondents (medical students, radiology residents, and consultants) blinded to the actual diagnosis independently evaluated the images pertaining to the presence of ascending aortic dissection. The reference standard was represented by clinical and imaging diagnosis. Inter-rater and inter-group concordance was evaluated; the agreement with reference tests was calculated and assessed as a function of reporters’ training level. Results: Reporters’ ascending aortic dissection assessment showed a better correlation with the reference standard in the ECG gated CTA. The inter-rater correlation was higher in the ECG gated CTA compared to non-ECG gated CTA. Observers’ confidence for diagnosing ascending aortic dissection was higher in the ECG gated CTA. Statistically significant differences (p < 0.05) were found between different training levels when assessing non-ECG gated examinations. Conclusions: ECG gated CTA shows a higher diagnostic performance for ascending aortic dissection than non-ECG gated CTA, regardless of the reporters’ training level.
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Affiliation(s)
| | - Christian Broemmer
- ME1 Department, “George Emil Palade” University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540142 Targu Mures, Romania
| | - Anamaria R. Budeanu
- Emergency County Hospital Târgu Mureș, 540136 Targu Mures, Romania
- Correspondence:
| | - Marian Pop
- ME1 Department, “George Emil Palade” University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540142 Targu Mures, Romania
- Radiology and Medical Imaging Department, Emergency Institute for Cardiovascular Disease and Heart Transplant of Targu Mures, 540136 Targu Mures, Romania
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Wu MY, Bang TJ, Restauri N, Chawla A, Khawaja RDA, Vargas D. Imaging Acute Aortic Syndromes. Semin Roentgenol 2022; 57:335-344. [DOI: 10.1053/j.ro.2022.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 11/11/2022]
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4
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Sherif M, Jhala H, Chetty G. Managing iatrogenic aortic dissection during primary percutaneous coronary intervention of the left main stem. J Card Surg 2022; 37:1402-1404. [PMID: 35172383 DOI: 10.1111/jocs.16337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 01/24/2022] [Indexed: 11/27/2022]
Abstract
Iatrogenic aortic dissection post primary percutaneous coronary intervention (PCI) is rare but yet a serious complication. In this report, we present a case of a 40-year-old lady who had an aortic dissection post PCI which was initially missed by the conventional contrast images and required a gated computerized tomography aortogram to confirm the diagnosis. The patient was managed with strict blood pressure control resulting in complete healing of the dissection after 72 hours of the management. The case illustrates the importance of selecting the correct imaging to make an accurate diagnosis when aortic dissection is suspected and outlines the importance of blood pressure control in treating iatrogenic aortic dissections.
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Affiliation(s)
- Mohamed Sherif
- Department of Cardiac Surgery, Leeds General Infirmary, Leeds, UK
| | - Hiral Jhala
- Department of Cardiothoracic, Northern General Hospital, Sheffield, UK
| | - Govind Chetty
- Department of Cardiothoracic, Northern General Hospital, Sheffield, UK
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5
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Otani T, Ichiba T, Kashiwa K, Naito H. Potential of unenhanced computed tomography as a screening tool for acute aortic syndromes. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2021; 10:967-975. [PMID: 34458899 DOI: 10.1093/ehjacc/zuab069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/20/2021] [Accepted: 08/05/2021] [Indexed: 01/16/2023]
Abstract
AIMS Contrast-enhanced computed tomography (CE-CT) is the gold standard for diagnosing acute aortic syndromes (AAS). Unenhanced computed tomography (unenhanced-CT) also provides specific findings for AAS; however, its diagnostic ability is not well discussed. This study aims to evaluate the potential of unenhanced-CT as an AAS screening tool. METHODS AND RESULTS We retrospectively examined AAS patients who visited our hospital between 2011 and 2021 to validate the diagnostic value of unenhanced-CT alone and along with the aortic dissection detection risk score (ADD-RS) plus D-dimer. Acute aortic syndrome was assessed as detectable using unenhanced-CT with any of the following findings: pericardial haemorrhage, high-attenuation haematoma, and displacement of intimal calcification or a flap. Of the 316 AAS cases, 292 (92%) were detectable with unenhanced-CT. Twenty-four (8%) cases undetectable with unenhanced-CT involved younger patients [median (interquartile range), 45 (42-51) years vs. 72 (63-80) years, P < 0.001] and patients more frequently complicated with a patent false lumen (79% vs. 42%, P < 0.001). Acute aortic syndrome-detection rate with unenhanced-CT increased with age, reaching 98% (276/282) in those ≥50 years of age and 100% (121/121) in those ≥75 years of age. With the ADD-RS plus D-dimer, there was only one AAS case undetectable with unenhanced-CT among patients ≥50 years of age, except for cases with the ADD-RS ≥1 plus D-dimer levels of ≥0.5 μg/mL. CONCLUSION Acute aortic syndromes in younger patients and patients with a patent false lumen could be misdiagnosed with unenhanced-CT alone. The combination of the ADD-RS plus D-dimer and unenhanced-CT could minimize AAS misdiagnosis while avoiding over-testing with CE-CT.
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Affiliation(s)
- Takayuki Otani
- Department of Emergency Medicine, Hiroshima City Hiroshima Citizens Hospital, 7-33 Motomachi, Naka-ku, Hiroshima City, Hiroshima 730-8518, Japan
| | - Toshihisa Ichiba
- Department of Emergency Medicine, Hiroshima City Hiroshima Citizens Hospital, 7-33 Motomachi, Naka-ku, Hiroshima City, Hiroshima 730-8518, Japan
| | - Kenichiro Kashiwa
- Department of Emergency Medicine, Hiroshima City Hiroshima Citizens Hospital, 7-33 Motomachi, Naka-ku, Hiroshima City, Hiroshima 730-8518, Japan
| | - Hiroshi Naito
- Department of Emergency Medicine, Hiroshima City Hiroshima Citizens Hospital, 7-33 Motomachi, Naka-ku, Hiroshima City, Hiroshima 730-8518, Japan
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6
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Patel VK, Fruauff A, Esses D, Lipsitz EC, Levsky JM, Haramati LB. Implementation of an aortic dissection CT protocol with clinical decision support aimed at decreasing radiation exposure by reducing routine abdominopelvic imaging. Clin Imaging 2020; 67:108-112. [PMID: 32559680 DOI: 10.1016/j.clinimag.2020.06.005] [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: 03/06/2020] [Revised: 05/19/2020] [Accepted: 06/01/2020] [Indexed: 10/24/2022]
Abstract
Patients suspected of having an acute aortic syndrome in the ED typically undergo CT of the chest/abdomen/pelvis. However, the overwhelming majority of these exams are negative. With the help of clinical decision support, we implemented a new radiologist monitored 'aortic dissection screening protocol' that forgoes routine abdominopelvic imaging in order to reduce radiation dose without compromising diagnostic accuracy. The purpose of the present study is to assess the performance of this protocol. A retrospective analysis was performed to study the effect of the dissection screening protocol on the diagnostic yield, radiation and contrast dose on a total of 835 ED patients who underwent CT scans for suspected aortic dissection over a 48-week study period immediately before and after implementation of the protocol. 3.4% (28/835) of examinations were positive for an acute aortic syndrome over the 48-week study period with no difference in positivity before and after implementation of the 'aortic dissection screening' protocol, 3.0% vs. 3.7%, respectively (p = 0.57). There was a 14.6% reduction in median radiation dose and a 16% decrease in contrast volume utilization for the total ED population who underwent CT for aortic dissection using any protocol in the period after implementation of the 'aortic dissection screening' protocol. Aortic dissection CT in the ED is negative in the overwhelming majority of cases. A monitored 'aortic dissection screening' protocol that initially images the chest only significantly reduced contrast and radiation dose without reducing diagnostic accuracy for ED patients who underwent CT for aortic dissection.
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Affiliation(s)
- Vishal K Patel
- Department of Radiology, Montefiore Medical Center, Bronx, NY 10467, United States; Albert Einstein College of Medicine, Bronx, NY 10467, United States.
| | - Alana Fruauff
- Albert Einstein College of Medicine, Bronx, NY 10467, United States
| | - David Esses
- Albert Einstein College of Medicine, Bronx, NY 10467, United States; Department of Emergency Medicine, Montefiore Medical Center, Bronx, NY 10467, United States
| | - Evan C Lipsitz
- Albert Einstein College of Medicine, Bronx, NY 10467, United States; Division of Vascular and Endovascular Surgery, Department of Cardiothoracic and Vascular Surgery, Montefiore Medical Center, Bronx, NY 10467, United States
| | - Jeffrey M Levsky
- Department of Radiology, Montefiore Medical Center, Bronx, NY 10467, United States; Albert Einstein College of Medicine, Bronx, NY 10467, United States; Department of Medicine, Montefiore Medical Center, Bronx, NY 10467, United States
| | - Linda B Haramati
- Department of Radiology, Montefiore Medical Center, Bronx, NY 10467, United States; Albert Einstein College of Medicine, Bronx, NY 10467, United States; Department of Medicine, Montefiore Medical Center, Bronx, NY 10467, United States
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7
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Bautz B, Schneider JI. High-Risk Chief Complaints I: Chest Pain-The Big Three (an Update). Emerg Med Clin North Am 2020; 38:453-498. [PMID: 32336336 DOI: 10.1016/j.emc.2020.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nontraumatic chest pain is a frequent concern of emergency department patients, with causes that range from benign to immediately life threatening. Identifying those patients who require immediate/urgent intervention remains challenging and is a high-risk area for emergency medicine physicians where incorrect or delayed diagnosis may lead to significant morbidity and mortality. This article focuses on the 3 most prevalent diagnoses associated with adverse outcomes in patients presenting with nontraumatic chest pain, acute coronary syndrome, thoracic aortic dissection, and pulmonary embolism. Important aspects of clinical evaluation, diagnostic testing, treatment, and disposition and other less common causes of lethal chest pain are also discussed.
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Affiliation(s)
- Benjamin Bautz
- Department of Emergency Medicine, Boston Medical Center, 1 Boston Medical Center Place, Boston, MA 02118, USA
| | - Jeffrey I Schneider
- Department of Emergency Medicine, Boston Medical Center, 1 Boston Medical Center Place, Boston, MA 02118, USA; Department of Emergency Medicine, Boston University School of Medicine, Boston, MA, USA.
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8
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Zhao H, Ma W, Wen D, Duan W, Zheng M. Computed tomography angiography findings predict the risk factors for preoperative acute ischaemic stroke in patients with acute type A aortic dissection. Eur J Cardiothorac Surg 2020; 57:912-919. [PMID: 31898735 DOI: 10.1093/ejcts/ezz351] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/30/2019] [Accepted: 11/01/2019] [Indexed: 12/11/2022] Open
Abstract
Abstract
OBJECTIVES
Acute ischaemic stroke (AIS) is a highly dreaded complication of acute type A aortic dissection (ATAAD). Knowledge about independent predictors of preoperative AIS in patients with ATAAD remains unclear. The aim of this study was to identify the risk factors for preoperative AIS in patients with ATAAD by computed tomography angiography (CTA) findings.
METHODS
Between October 2014 and March 2017, 281 (217 male; mean age, 50 years) patients with ATAAD underwent aortic CTA and diffusion-weighted magnetic resonance imaging of the brain was used to confirm the results. The clinical data and CTA findings were evaluated retrospectively. Patients were divided into 2 groups depending on the presence or absence of preoperative AIS.
RESULTS
Preoperative AIS was detected in 103 (36.7%) of the patients with ATAAD. Univariable analysis of the clinical characteristics and CTA findings revealed that age, aortic valve insufficiency (moderate or severe), the ratio of the diameter of the true lumen of the ascending aorta to the diameter of the involved ascending aorta, intimal flap plaque, dissection of the common carotid artery (CCA), the lower density of the unilateral internal carotid artery, the CCA originating from the false lumen and dissection of the subclavian artery were implicated in patients with ATAAD with AIS. Multivariable analysis further showed that aortic valve insufficiency (moderate or severe) [odds ratio (OR) 2.033, 95% confidence interval (CI) 1.052–3.931; P = 0.035], 2 CTA findings including the ratio of the diameters (OR 0.074, 95% CI 0.011–0.516; P = 0.009) and dissection of the CCA (OR 2.422, 95% CI 1.389–4.224; P = 0.002) were independent risk predictors for preoperative AIS in patients with ATAAD. The lower density in the false lumen, the same enhancement in the true and false lumen with re-entry and the stenosis of the true lumen without re-entry significantly increased the risk of preoperative AIS in CCA dissection.
CONCLUSIONS
Aortic valve insufficiency (moderate or severe), the ratio of the diameters of the true and false lumens and CCA dissection are independent predictors of preoperative AIS in patients with ATAAD. The specific carotid and aortic CTA findings may help to predict the risk factors for preoperative AIS in patients with ATAAD.
Clinical registration number
20120216-4.
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Affiliation(s)
- Hongliang Zhao
- Department of Radiology, Xijing Hospital, Fourth Military University, Xi’an, China
| | - Wanling Ma
- Department of Radiology, Xijing Hospital, Fourth Military University, Xi’an, China
| | - Didi Wen
- Department of Radiology, Xijing Hospital, Fourth Military University, Xi’an, China
| | - Weixun Duan
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military University, Xi’an, China
| | - Minwen Zheng
- Department of Radiology, Xijing Hospital, Fourth Military University, Xi’an, China
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9
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Protocol using wide-detector CT with single contrast injection for the aorta and coronary artery: variable helical pitch versus volume scan following helical scan. Int J Cardiovasc Imaging 2019; 35:1935-1942. [DOI: 10.1007/s10554-019-01640-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 05/27/2019] [Indexed: 10/26/2022]
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10
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Experimental Insight into the Hemodynamics and Perfusion of Radiological Contrast in Patent and Non-patent Aortic Dissection Models. Cardiovasc Eng Technol 2019; 10:314-328. [PMID: 30805874 DOI: 10.1007/s13239-019-00407-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 02/09/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE In a curved vessel such as the aortic arch, the velocity profile closer to the aortic root is normally skewed towards the inner curvature wall, while further downstream along the curve, the velocity profile becomes skewed towards the outer wall. In an aortic dissection (AD) disease, blood velocities in the true lumen (TL) and false lumen (FL) are hypothesized to depend on the proximity of the entry tear to the root of aortic arch. Faster velocity in the FL can lead to higher hemodynamic loading, and pose tearing risk. Furthermore, the luminal velocities control the perfusion rate of radiological contrast media during diagnostic imaging. The objective in this study is to investigate the effect of AD disease morphology and configuration on the blood velocity field in the TL and FL, and on the relative perfusion of radiological enhancement agents through the dissection. METHODS Eight in vitro models were studied, including patent and non-patent FL configurations. Particle image velocimetry (PIV) was used to quantify the AD velocity field, while laser-induced fluorescence (LIF) was implemented to visualize dynamical flow phenomena and to quantify the perfusion of injected dye, in mimicry of contrast-enhanced computed tomography (CT). RESULTS The location of the proximal entry tear along the aortic arch in a patent FL had a dramatic impact on whether the blood velocity was higher in the TL or FL. The luminal velocities were dependent on the entry/reentry tear size combination, with the smaller tear (whether distal or proximal) setting the upper limit on the maximal flow velocity in the FL. Upon merging near the distal reentry tear, the TL/FL velocity differential gave rise to the roll up and shedding of shear layer vortices that convected downstream in close proximity to the wall of the non-dissected aorta. In a non-patent FL, the flow velocity was practically null with all the blood passing through the TL. LIF imaging showed much slower perfusion of contrast dye in the FL compared to the TL. In a patent FL, however, dye had a comparable perfusion rate appearing around the same time as in the TL. CONCLUSIONS Blood velocities in the TL and FL were highly sensitive to the exact dissection configuration. Geometric case A1R, which had its proximal entry tear located further downstream along the aortic arch, and had its entry and reentry tears sufficiently sized, exhibited the highest FL flow velocity among the tested models, and it was also higher than in the TL, which suggest that this configuration had elevated hemodynamic loading and risk for tearing. In contrast-enhanced diagnostic imaging, a time-delayed acquisition protocol is recommended to improve the detection of suspected cases with a non-patent FL.
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Meng J, Mellnick VM, Monteiro S, Patlas MN. Acute Aortic Syndrome: Yield of Computed Tomography Angiography in Patients With Acute Chest Pain. Can Assoc Radiol J 2019; 70:23-28. [PMID: 30691558 DOI: 10.1016/j.carj.2018.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/07/2018] [Accepted: 10/08/2018] [Indexed: 01/12/2023] Open
Affiliation(s)
- Jane Meng
- Department of Radiology, McMaster University, Hamilton, Ontario, Canada
| | | | - Sandra Monteiro
- Department of Epidemiology & Biostatistics, McMaster University, Hamilton, Ontario, Canada
| | - Michael N Patlas
- Department of Radiology, McMaster University, Hamilton, Ontario, Canada.
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Burboa-Noriega L, Burboa-Noriega J, Cristancho-Rojas C, Criales-Vera S. Evaluación de las características de la disección aórtica en la población mexicana mediante angiotomografía computarizada. ARCHIVOS DE CARDIOLOGIA DE MEXICO 2018; 88:496-502. [DOI: 10.1016/j.acmx.2018.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 05/31/2018] [Accepted: 05/31/2018] [Indexed: 10/28/2022] Open
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Ultrasonography in Emergency Department; a Diagnostic Tool for Better Examination and Decision-Making. ADVANCED JOURNAL OF EMERGENCY MEDICINE 2017; 2:e7. [PMID: 31172070 PMCID: PMC6548109 DOI: 10.22114/ajem.v0i0.40] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Context: The aim of this study is to evaluate the applications of ultrasonography (US) as a diagnostic tool in emergency settings. Evidence acquisition: In the present review article, search engines and scientific databases of Google Scholar, Science Direct, PubMed, Medline, Scopus, and Cochrane were searched for the applications of US in emergencies. Finally, related articles which were published between 2000 and 2017, were selected and by reviewing them an attempt was made to evaluate various applications of US for examining and facilitating decision-making in emergency department (ED). Results: As a diagnostic tool, US can be of diagnostic help in emergency settings for the specialists and the treatment team regarding trauma, measuring intracranial pressure (ICP), hemothorax pneumothorax, abscess and its drainage, deep vein thrombosis (DVT), dyspnea, acute abdomen, appendicitis and biliary problems, renal colic and renal stones, shock, foreign object, bone fracture, peripheral nerve block, establishing central and peripheral venous access, lumbar puncture (LP), and confirmation of nasogastric tube (NGT) and endotracheal tube (ETT) placement. Conclusion: The results of this review study showed that US can be of help to EMPs as a diagnostic tool in a wide range of diseases and clinical conditions, which in turn can result in a decrease in the time needed for diagnosis and treatment, and therefore improve both the quality and quantity of the service provided in ED.
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15
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Whole-Body High-Pitch CT Angiography: Strategies to Reduce Radiation Dose and Contrast Volume. AJR Am J Roentgenol 2017; 209:1396-1403. [DOI: 10.2214/ajr.16.17695] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Stoicescu C, Vinereanu D, Kilic ID, Nasifov M, Goktekin O, Sawaya F, Millan-Iturbe O, Søndergaard L. How should I treat an iatrogenic type IIA DeBakey-Stanford aortic dissection during a percutaneous right coronary artery intervention? EUROINTERVENTION 2017; 13:e1124-e1128. [PMID: 29033388 DOI: 10.4244/eij-d-15-00226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Claudiu Stoicescu
- University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
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Yu Y, Fei A, Wu Z, Wang H, Pan S. Aortic intramural hemorrhage: A distinct disease entity with mystery. Intractable Rare Dis Res 2017; 6:87-94. [PMID: 28580207 PMCID: PMC5451753 DOI: 10.5582/irdr.2017.01011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aortic intramural hemorrhage (IMH) is one of the disease processes that comprise the spectrum of acute aortic syndrome (AAS) with clinical manifestations and a mortality rate similar to those of classic aortic dissection (AD). However, IMH should be considered as a distinct disease entity rather than a precursor to classic dissection because of differences in their pathology, etiology, natural history, and imaging findings. Multidetector computed tomography (CT) is recommended as the first-line diagnostic imaging modality for IMH, but transesophageal echocardiography (TEE) and magnetic resonance imaging (MRI) are also helpful. There is still debate over the appropriate treatment of IMH. Medical treatment of type B IMH appears effective and safe, while surgical treatment is recommended for type A IMH. Thoracic endovascular aortic repair (TEVAR) is a promising treatment for selected patients, and more clinical evidence needs to be assembled.
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Affiliation(s)
- Yun Yu
- Department of Emergency, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Surgery, The University of Tokyo Hospital, Tokyo, Japan
| | - Aihua Fei
- Department of Emergency, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zengbin Wu
- Department of Emergency, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hairong Wang
- Department of Emergency, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shuming Pan
- Department of Emergency, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
- Address correspondence to: Dr. Shuming Pan, Department of Emergency, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China. E-mail:
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ACR Appropriateness Criteria ® Pulsatile Abdominal Mass Suspected Abdominal Aortic Aneurysm. J Am Coll Radiol 2017; 14:S258-S265. [DOI: 10.1016/j.jacr.2017.01.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 01/19/2017] [Accepted: 01/23/2017] [Indexed: 11/20/2022]
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Goldschmiedt J, Levsky JM, Bellin EY, Mizrachi E, Esses D, Haramati LB. Prospective study of a non-restrictive decision rule for acute aortic syndrome. Am J Emerg Med 2017; 35:1309-1313. [PMID: 28427782 DOI: 10.1016/j.ajem.2017.04.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES To determine the impact of a non-restrictive clinical decision rule on CT utilization for Emergency Department patients suspected of having an acute aortic syndrome (AAS). METHODS We prospectively assessed the performance of a previously described, collaboratively designed, non-restrictive clinical decision rule for AAS. Emergency Department patients with suspected AAS were stratified into low and high-risk groups based on decision rule results, from July 2013-August 2014. Patients with acute trauma, prior AAS or aortic surgery were excluded. CT dose reduction protocols were concurrently implemented as a quality improvement measure. Bivariate analysis was performed to compare the prospective cohort with the historical derivation cohort for CT utilization rates, results of CT, AAS incidence and radiation exposure. The performance of the clinical decision rule was evaluated. RESULTS Compared with the historic cohort, the study cohort demonstrated a lower CT utilization rate [0.344% (427/124,093) versus 0.477% (1465/306,961), (p<0.001)], a trend toward higher CT diagnostic yield [4.4% (19/427) versus 2.7% (40/1465), (p=0.08)]. AAS incidence was similar [0.015% (19/124,093) versus 0.013% (40/306,961), (p=0.57)]. The mean effective radiation dose was markedly lower [12±5.5mSv versus 43±20mSv, (p<0.0001)]. The clinical decision rule correctly stratified only 56% (10/18) of patients with AAS as high-risk. CONCLUSIONS A non-restrictive, collaboratively designed, clinical decision rule for Emergency Department patients with suspected AAS performed poorly in risk-stratifying patients for AAS. However, its implementation was associated with a significant and safe decrease in CT utilization.
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Affiliation(s)
- Judah Goldschmiedt
- Department of Radiology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States
| | - Jeffrey M Levsky
- Department of Radiology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States; Department of Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States
| | - Eran Y Bellin
- Department of Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States; Department of Epidemiology, Population Health, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States
| | - Esther Mizrachi
- Department of Radiology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States; Department of Emergency Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States
| | - David Esses
- Department of Emergency Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States
| | - Linda B Haramati
- Department of Radiology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States; Department of Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY 10467, United States.
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20
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Lu D, Li CL, Lv WF, Ni M, Deng KX, Zhou CZ, Xiao JK, Zhang ZF, Zhang XM. Diagnostic value of multislice computerized tomography angiography for aortic dissection: A comparison with DSA. Exp Ther Med 2017; 13:405-412. [PMID: 28352308 PMCID: PMC5348692 DOI: 10.3892/etm.2016.3985] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 08/18/2016] [Indexed: 11/16/2022] Open
Abstract
The aim of the present study was to compare multislice computed tomography angiography (MSCTA) and digital subtraction angiography (DSA) in the diagnosis of aortic dissection. In total, 49 patients with aortic lesions received enhanced computed tomography scanning, and three-dimensional (3D) images were reconstructed by volume rendering (VR), maximum intensity projection (MIP), multiplanar reformation (MPR) and curved planar reconstruction (CPR). The display rate of the entry tear site, intimal flap, true and false lumen from each reconstruction method was calculated. For 30 patients with DeBakey type III aortic dissection, the entry tear site and size of the first intimal flap, aortic maximum diameter at the orifice of left subclavian artery (LSCA), distance between the first entry tear site and the orifice of LSCA, and maximum diameter of aortic true and false lumens were measured prior to implantation of endovascular covered stent-grafts. Data obtained by MSCTA and DSA were then compared. For the entry tear site, MPR, CPR and VR provided a display rate of 95.92, 95.92 and 18.37%, respectively, and the display rate of the intimal flap was 100% in the three methods. MIP did not directly display the entry tear site and intimal flap. For true and false lumens, MPR, CPR, and VR showed a display rate of 100%, while MIP only provided a display rate of 67.35%. When MSCTA was compared with DSA, there was a significant difference in the display of entry site number and position (P<0.05), whereas no significant difference was shown in the measurement of aortic maximum diameter at the orifice of LSCA and the maximum diameter of true and false lumens (P>0.05). In conclusion, among the 3D post-processing reconstruction methods of MSCTA used, MPR and CPR were optimal, followed by VR, and MIP. MSCTA may be the preferable imaging method to diagnose aortic dissection and evaluate treatment of endovascular-covered stent-grafting, preoperatively.
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Affiliation(s)
- Dong Lu
- Department of Interventional MRI, Shandong Provincial Medical Imaging Research Institute, Shandong University, Jinan, Shandong 250021, P.R. China; Department of Radiology, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
| | - Cheng-Li Li
- Department of Interventional MRI, Shandong Provincial Medical Imaging Research Institute, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Wei-Fu Lv
- Department of Radiology, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
| | - Ming Ni
- PET/CT Center, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
| | - Ke-Xue Deng
- Department of Radiology, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
| | - Chun-Ze Zhou
- Department of Radiology, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
| | - Jing-Kun Xiao
- Department of Radiology, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
| | - Zhen-Feng Zhang
- Department of Radiology, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
| | - Xing-Ming Zhang
- Department of Radiology, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230001, P.R. China
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Kumar DS, Bhat V, Gadabanahalli K, Kalyanpur A. Spectrum of Abdominal Aortic Disease in a Tertiary Health Care Setup: MDCT Based Observational Study. J Clin Diagn Res 2017; 10:TC24-TC29. [PMID: 28050476 DOI: 10.7860/jcdr/2016/21373.8928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 09/06/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Abdominal aortic disease is an important cause of clinical disability that requires early detection by imaging methods for prompt and effective management. Understanding regional disease pattern and prevalence has a bearing on healthcare management and resource planning. Non-invasive, conclusive imaging strategy plays an important role in the detection of disease. Multi-Detector Computed Tomography (MDCT) with its technological developments provides affordable, accurate and comprehensive imaging solution. AIM To evaluate regional demography of abdominal aortic disease spectrum detected using MDCT imaging data in a tertiary hospital. MATERIALS AND METHODS A descriptive study was conducted based on MDCT imaging data of patients who were investigated with clinical diagnosis of abdominal aortic disease, from March 2008-2010, over a period of 24 months. Patients were examined with the contrast-enhanced MDCT examination. Morphological diagnosis of the aortic disease was based on changes in relative aortic caliber, luminal irregularity, presence of wall calcification, dissection or thrombus and evidence of major branch occlusion. Patients were categorized into four groups based on imaging findings. MDCT information and associated clinical parameters were examined and correlated to management of patient. Descriptive statistical data, namely mean, standard deviation and frequency of disease were evaluated. RESULTS A total of 90 out of 210 patients (43%) were detected with the abdominal aortic abnormality defined by imaging criteria. Group I, comprising of patients with atherosclerosis -including those with complications, constituted 65.5% of the patients. Group II represented patients with aneurysms (45.5%). Group III, consisting of 32.2% of the patients, contained those with dissections. The rest of the patients, including patients with aorto-arteritis, were classified as group IV. Eight patients with aneurysm and one patient with aorto-arteritis were considered for surgical treatment. Ten patients with dissection underwent endovascular procedure. Rest of the patients was managed conservatively. CONCLUSION Aortic disease was observed in 43% of investigated patients. Atherosclerosis with and without aortic aneurysm constituted the largest group. MDCT provided comprehensive information about the lesion and associated complications. In view of the wider availability and desired imaging qualities, MDCT provided optimal information for diagnosis and management of aortic pathology. Majority of our patients (90%) were treated conservatively.
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Affiliation(s)
- Dg Santosh Kumar
- Consultant Radiologist, Narayana Health, Shaw Mazumdar Medical Center , Bengaluru, Karnataka, India
| | - Venkatraman Bhat
- Director of Imaging Services, Sr. Consultant, Department of Radiology, Narayana Health, Shaw Mazumdar Medical Center , Bengaluru, Karnataka, India
| | - Karthik Gadabanahalli
- Consultant Radiologist, Department of Radiology, Narayana Health, Teleradiology Solutions , Whitefield, Bengaluru, Karnataka, India
| | - Arjun Kalyanpur
- CEO, Teleradiology Solutions, Teleradiology Solutions , Whitefield, Bengaluru, Karnataka, India
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Qi Y, Ma X, Li G, Ma X, Wang Q, Yu D. Three-Dimensional Visualization and Imaging of the Entry Tear and Intimal Flap of Aortic Dissection Using CT Virtual Intravascular Endoscopy. PLoS One 2016; 11:e0164750. [PMID: 27760170 PMCID: PMC5070738 DOI: 10.1371/journal.pone.0164750] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 10/02/2016] [Indexed: 01/02/2023] Open
Abstract
AIMS Conventional computed tomography (CT) approaches provides limited visualization of the entire endoluminal changes of aortic dissection (AD), which is essential for its treatment. As an important supplement, three-dimensional CT virtual intravascular endoscopy (VIE) can show relevant details. This study aims to determine the value of VIE in displaying the entry tear and intimal flap of AD. METHODS AND RESULTS Among 127 consecutive symptomatic patients with suspected AD who underwent CT angiography (CTA), 84 subjects were confirmed to have AD and were included in the study. Conventional CT and VIE images were observed and evaluated. From the 92 entry tears revealed via conventional CT, 88 (95.7%) tears appeared on VIE with round (n = 26), slit-shaped (n = 9), or irregular (n = 53) shapes, whereas the intimal flaps were sheetlike (n = 34), tubular (n = 34), wavelike (n = 13), or irregular (n = 7) in shape. The VIE also showed the spatial relationship between the torn flap and adjacent structures. Among 58 entry tears with multiple-line type flap shown on conventional CT, 41 (70.7%) appeared with an irregular shape on VIE, whereas among 30 tears with single-line type flap, 17 (56.7%) appeared as round or slit-shaped on VIE. These results demonstrated a significant difference (P < 0.05). The poor display of tears on VIE was related to the low CT attenuation values in lumen or in neighboring artifacts (P < 0.01). CONCLUSION CT VIE presents the complete configurations and details of the intimal tears and flaps of AD better than conventional CT approaches. Accordingly, it should be recommended as a necessary assessment tool for endovascular therapy and as part of strategy planning in pre-surgical patients.
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Affiliation(s)
- Yafei Qi
- Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Xiaoyuan Ma
- Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Gang Li
- Radiology Department, Jiaotong Hospital of Shandong Province, Jinan, Shandong Province, China
| | - Xiangxing Ma
- Radiology Department, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Qing Wang
- Radiology Department, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Dexin Yu
- Radiology Department, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
- * E-mail:
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Haji-Momenian S, Rischall J, Okey N, Taffel M, Khati N, Zeman R. CT of suspected thoracic acute aortic injury in the emergency department: is routine abdominopelvic imaging worth the additional collective radiation dose? Emerg Radiol 2016; 24:13-20. [PMID: 27568394 DOI: 10.1007/s10140-016-1435-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 08/16/2016] [Indexed: 10/21/2022]
Abstract
This study aimed to determine the incidence of non-traumatic acute aortic injury (AAI) extending from the chest into the abdomen or pelvis in emergency department (ED) patients with acute aortic syndrome (AAS), to estimate the effective dose of the abdominopelvic portion of these CT exams, and to compare the number needed to screen (NNS) with the collective population radiation dose of imaging those stations. All patients (n = 238) presenting to the ED with AAS between March 2014 and June 2015 who were imaged per CT AAI protocol (noncontrast and contrast-enhanced CT angiography of the chest, abdomen, and pelvis) were retrospectively identified in this IRB-approved HIPAA-compliant study. The Stanford classification for positive cases of AAI was further subclassified based on chest, abdominal, or pelvic involvement. The dose length product (DLP) of each exam was used to estimate the dose of the abdominal and pelvic stations and the collective effective dose for the population. There were five cases of aortic dissection (AD) and two of intramural hematoma (IMH), with an AAI incidence of 2.9/100. Three cases of AAI were confined to the chest. Two cases of AAI were confined to the chest and abdomen, and two cases involved the chest, abdomen, and pelvis. There was only one case of AAI involving the ascending aorta that extended into the abdomen or pelvis. The number needed to screen to identify (a) AAI extending from the chest into the abdomen or pelvis was 59.5 and (b) Stanford A AAI extending into the abdomen or pelvis was 238. The estimated mean effective dose for the abdominopelvic stations were unenhanced abdomen 2.3 mSv, unenhanced pelvis 3.3 mSv, abdominal CTA 2.5 mSv, and pelvic CTA 3.6 mSv. The collective effective doses to the abdomen and pelvis with unenhanced CT and CTA in 59.5 patients and 238 patients were 761.6 and 3046.4 mSv, respectively. While the estimated mean effective dose for imaging of the abdominopelvic stations are low, the collective effective dose should also be considered. It may be beneficial to modify or omit routine unenhanced CT and/or CTA of the abdomen/pelvis in this patient population in the absence of abdominal symptoms, and image the abdomen and pelvis in positive thoracic cases only.
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Affiliation(s)
- Shawn Haji-Momenian
- Department of Radiology, The George Washington University Medical Faculty Associates, George Washington University Hospital, 900 23rd St NW, Washington, DC, 20037, USA.
| | - Jonathan Rischall
- The George Washington University School of Medicine, 2300 I St NW, Washington, DC, 20052, USA
| | - Neil Okey
- The George Washington University School of Medicine, 2300 I St NW, Washington, DC, 20052, USA
| | - Myles Taffel
- Department of Radiology, The George Washington University Medical Faculty Associates, George Washington University Hospital, 900 23rd St NW, Washington, DC, 20037, USA
| | - Nadia Khati
- Department of Radiology, The George Washington University Medical Faculty Associates, George Washington University Hospital, 900 23rd St NW, Washington, DC, 20037, USA
| | - Robert Zeman
- Department of Radiology, The George Washington University Medical Faculty Associates, George Washington University Hospital, 900 23rd St NW, Washington, DC, 20037, USA
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25
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Valente T, Rossi G, Lassandro F, Rea G, Marino M, Muto M, Molino A, Scaglione M. MDCT evaluation of acute aortic syndrome (AAS). Br J Radiol 2016; 89:20150825. [PMID: 27033344 DOI: 10.1259/bjr.20150825] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Non-traumatic acute thoracic aortic syndromes (AAS) describe a spectrum of life-threatening aortic pathologies with significant implications on diagnosis, therapy and management. There is a common pathway for the various manifestations of AAS that eventually leads to a breakdown of the aortic intima and media. Improvements in biology and health policy and diffusion of technology into the community resulted in an associated decrease in mortality and morbidity related to aortic therapeutic interventions. Hybrid procedures, branched and fenestrated endografts, and percutaneous aortic valves have emerged as potent and viable alternatives to traditional surgeries. In this context, current state-of-the art multidetector CT (MDCT) is actually the gold standard in the emergency setting because of its intrinsic diagnostic value. Management of acute aortic disease has changed with the increasing realization that endovascular therapies may offer distinct advantages in these situations. This article provides a summary of AAS, focusing especially on the MDCT technique, typical and atypical findings and common pitfalls of AAS, as well as recent concepts regarding the subtypes of AAS, consisting of aortic dissection, intramural haematoma, penetrating atherosclerotic ulcer and unstable aortic aneurysm or contained aortic rupture. MDCT findings will be related to pathophysiology, timing and management options to achieve a definite and timely diagnostic and therapeutic definition. In the present article, we review the aetiology, pathophysiology, clinical presentation, outcomes and therapeutic approaches to acute aortic syndromes.
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Affiliation(s)
- Tullio Valente
- 1 Department of Diagnostic Imaging, Section of General Radiology, Azienda Ospedali dei Colli, Naples, Italy
| | - Giovanni Rossi
- 1 Department of Diagnostic Imaging, Section of General Radiology, Azienda Ospedali dei Colli, Naples, Italy
| | - Francesco Lassandro
- 1 Department of Diagnostic Imaging, Section of General Radiology, Azienda Ospedali dei Colli, Naples, Italy
| | - Gaetano Rea
- 1 Department of Diagnostic Imaging, Section of General Radiology, Azienda Ospedali dei Colli, Naples, Italy
| | - Maurizio Marino
- 1 Department of Diagnostic Imaging, Section of General Radiology, Azienda Ospedali dei Colli, Naples, Italy
| | - Maurizio Muto
- 1 Department of Diagnostic Imaging, Section of General Radiology, Azienda Ospedali dei Colli, Naples, Italy
| | - Antonio Molino
- 2 Department of Pneumology, Section of Respiratory Diseases, University of Naples Federico II c/o Monaldi Hospital, Naples, Italy
| | - Mariano Scaglione
- 3 Department of Diagnostic Imaging, Presidio Ospedaliero "Pineta Grande", Caserta, Italy.,4 Department of Radiology, Darent Valley Hospital, Darfford, UK
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Ciccone MM, Dentamaro I, Masi F, Carbonara S, Ricci G. Advances in the diagnosis of acute aortic syndromes: Role of imaging techniques. Vasc Med 2016; 21:239-50. [DOI: 10.1177/1358863x16631419] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Aortic diseases include a wide range of pathological conditions: aortic aneurysms, pseudoaneurysms, acute aortic syndromes, atherosclerotic and inflammatory conditions, genetic diseases and congenital anomalies. Acute aortic syndromes have acute onset and may be life-threatening. They include aortic dissection, intramural haematoma, penetrating aortic ulcer and traumatic aortic injury. Pain is the common denominator to all acute aortic syndromes. Pain occurs regardless of age, gender and other associated clinical conditions. In this review, we deal with the main findings in the clinical setting and the most recent indications for diagnostic imaging, which are aimed to start an appropriate treatment and improve the short- and long-term prognosis of these patients.
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Affiliation(s)
- Marco Matteo Ciccone
- Cardiovascular Diseases Section, Department of Emergency and Organ Transplantation (DETO), University of Bari, Bari, Italy
| | - Ilaria Dentamaro
- Cardiovascular Diseases Section, Department of Emergency and Organ Transplantation (DETO), University of Bari, Bari, Italy
| | - Filippo Masi
- Cardiovascular Diseases Section, Department of Emergency and Organ Transplantation (DETO), University of Bari, Bari, Italy
| | - Santa Carbonara
- Cardiovascular Diseases Section, Department of Emergency and Organ Transplantation (DETO), University of Bari, Bari, Italy
| | - Gabriella Ricci
- Cardiovascular Diseases Section, Department of Emergency and Organ Transplantation (DETO), University of Bari, Bari, Italy
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Use of multi-detector CT angiography in identification and classification of aorto-iliac diseases; clinical and surgical application. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2016. [DOI: 10.1016/j.ejrnm.2015.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Vardhanabhuti V, Nicol E, Morgan-Hughes G, Roobottom CA, Roditi G, Hamilton MCK, Bull RK, Pugliese F, Williams MC, Stirrup J, Padley S, Taylor A, Davies LC, Bury R, Harden S. Recommendations for accurate CT diagnosis of suspected acute aortic syndrome (AAS)--on behalf of the British Society of Cardiovascular Imaging (BSCI)/British Society of Cardiovascular CT (BSCCT). Br J Radiol 2016; 89:20150705. [PMID: 26916280 PMCID: PMC4985448 DOI: 10.1259/bjr.20150705] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Accurate and timely assessment of suspected acute aortic syndrome is crucial in this life-threatening condition. Imaging with CT plays a central role in the diagnosis to allow expedited management. Diagnosis can be made using locally available expertise with optimized scanning parameters, making full use of recent advances in CT technology. Each imaging centre must optimize their protocols to allow accurate diagnosis, to optimize radiation dose and in particular to reduce the risk of false-positive diagnosis that may simulate disease. This document outlines the principles for the acquisition of motion-free imaging of the aorta in this context.
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Affiliation(s)
- Varut Vardhanabhuti
- 1 Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth, UK.,2 Department of Diagnostic Radiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
| | - Edward Nicol
- 3 Radiology Department, Royal Brompton Hospital, London, UK
| | | | - Carl A Roobottom
- 1 Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth, UK.,5 Department of Radiology, Derriford Hospital, Plymouth, UK
| | - Giles Roditi
- 6 Department of Radiology, Glasgow Royal Infirmary, Glasgow, UK
| | | | - Russell K Bull
- 8 Department of Radiology, Royal Bournemouth Hospital, Bournemouth, UK
| | - Franchesca Pugliese
- 9 Centre for Advanced Cardiovascular Imaging, NIHR Cardiovascular Biomedical Research Unit, Barts and The London School of Medicine & Barts Health NHS Trust, London, UK
| | - Michelle C Williams
- 10 University of Edinburgh/British Heart Foundation Centre for Cardiovascular Science, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - James Stirrup
- 3 Radiology Department, Royal Brompton Hospital, London, UK
| | - Simon Padley
- 3 Radiology Department, Royal Brompton Hospital, London, UK
| | - Andrew Taylor
- 11 Cardiothoracic Unit, Great Ormond Street Hospital for Children, London, UK
| | - L Ceri Davies
- 9 Centre for Advanced Cardiovascular Imaging, NIHR Cardiovascular Biomedical Research Unit, Barts and The London School of Medicine & Barts Health NHS Trust, London, UK
| | - Roger Bury
- 12 Radiology Department, Blackpool Teaching Hospitals, Blackpool, UK
| | - Stephen Harden
- 13 Department of Cardiothoracic Radiology, University Hospital Southampton NHS Trust, Southampton, UK
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Gu G, Wan F, Xue Y, Cheng W, Zheng H, Zhao Y, Fan F, Han YI, Tong C, Yao C. Lumican as a novel potential clinical indicator for acute aortic dissection: A comparative study, based on multi-slice computed tomography angiography. Exp Ther Med 2016; 11:923-928. [PMID: 26998013 DOI: 10.3892/etm.2016.3020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 09/18/2015] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to investigate the association between serum lumican levels and acute aortic dissection (AAD) severity. A total of 82 patients with chest or back pain and 30 healthy volunteers were recruited. Among the patients, there were 70 cases of AAD and 12 cases of intramural hematoma (IMH). AAD severity was determined using multi-slice computed tomography angiography (MSCTA). Serum was collected from the patients upon admission, and lumican levels were detected using an enzyme-linked immunosorbent assay. In addition, correlation analyses were conducted between lumican levels and AAD severity by designing a 'SCORE X, RANGE Y' system to measure the number of affected vital arteries and vertical range of false lumen, based on the MSCTA. Lumican levels differed significantly among the AAD patients (2.32±4.29 ng/ml), IMH patients (0.72±0.32 ng/ml) and healthy volunteers (0.85±0.53 ng/ml; P=0.003). In the AAD patients presenting within 12-72 h of symptom onset, the Spearman's rho correlation coefficient between lumican and SCORE or RANGE was 0.373 (P=0.046) and 0.468 (P=0.010), respectively. The present results suggest that lumican may be a potential marker for aiding the diagnosis and screening for AAD, and may be used to predict the severity of AAD.
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Affiliation(s)
- Guorong Gu
- Department of Emergency, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Fang Wan
- Shanghai Medical Imaging Institute, Shanghai 200032, P.R. China; Department of Sports Medicine and Arthroscopy Surgery, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China
| | - Yuan Xue
- Department of Emergency, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Weizhong Cheng
- Shanghai Medical Imaging Institute, Shanghai 200032, P.R. China
| | - Haiyin Zheng
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Yun Zhao
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Fan Fan
- Department of Emergency, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Y I Han
- Department of Emergency, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Chaoyang Tong
- Department of Emergency, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Chenling Yao
- Department of Emergency, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
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Manlove W, Raptis CA, Bhalla S. Pitfalls in computed tomography of the aorta. Semin Roentgenol 2015; 50:229-34. [PMID: 26002244 DOI: 10.1053/j.ro.2015.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Whitney Manlove
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO
| | - Constantine A Raptis
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO
| | - Sanjeev Bhalla
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO.
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Thoracic Endovascular Aortic Repair for the Treatment of Aortic Dissection: Post-operative Imaging, Complications and Secondary Interventions. Cardiovasc Intervent Radiol 2015; 38:1391-404. [DOI: 10.1007/s00270-015-1072-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 01/18/2015] [Indexed: 10/23/2022]
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Multimodality Imaging of Diseases of the Thoracic Aorta in Adults: From the American Society of Echocardiography and the European Association of Cardiovascular Imaging. J Am Soc Echocardiogr 2015; 28:119-82. [DOI: 10.1016/j.echo.2014.11.015] [Citation(s) in RCA: 409] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Diercks DB, Promes SB, Schuur JD, Shah K, Valente JH, Cantrill SV, Cantrill SV, Brown MD, Burton JH, Diercks DB, Gemme SR, Gerardo CJ, Godwin SA, Hahn SA, Haukoos JS, Huff JS, Lo BM, Mace SE, Moon MD, Nazarian DJ, Promes SB, Shah K, Shih RD, Silvers SM, Smith MD, Tomaszewski CA, Valente JH, Wolf SJ, O'Connor RE, Whitson RR. Clinical Policy: Critical Issues in the Evaluation and Management of Adult Patients With Suspected Acute Nontraumatic Thoracic Aortic Dissection. Ann Emerg Med 2015; 65:32-42.e12. [DOI: 10.1016/j.annemergmed.2014.11.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hama Y, Koga M, Tokunaga K, Takizawa H, Miyashita K, Iba Y, Toyoda K. Carotid Ultrasonography Can Identify Stroke Patients Ineligible for Intravenous Thrombolysis Therapy due to Acute Aortic Dissection. J Neuroimaging 2014; 25:671-3. [DOI: 10.1111/jon.12186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 06/19/2014] [Accepted: 08/17/2014] [Indexed: 01/12/2023] Open
Affiliation(s)
- Yuka Hama
- Department of Cerebrovascular Medicine; National Cerebral and Cardiovascular Center; Osaka Suita Japan
| | - Masatoshi Koga
- Division of Stroke Care Unit; National Cerebral and Cardiovascular Center; Osaka Suita Japan
| | - Keisuke Tokunaga
- Department of Cerebrovascular Medicine; National Cerebral and Cardiovascular Center; Osaka Suita Japan
| | - Hotake Takizawa
- Department of Neurology; National Cerebral and Cardiovascular Center; Osaka Suita Japan
| | - Kotaro Miyashita
- Department of Neurology; National Cerebral and Cardiovascular Center; Osaka Suita Japan
| | - Yutaka Iba
- Department of Cardiovascular Surgery; National Cerebral and Cardiovascular Center; Osaka Suita Japan
| | - Kazunori Toyoda
- Department of Cerebrovascular Medicine; National Cerebral and Cardiovascular Center; Osaka Suita Japan
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Can the Unenhanced Phase Be Eliminated From Dual-Phase CT Angiography for Chest Pain? Implications for Diagnostic Accuracy in Acute Aortic Intramural Hematoma. AJR Am J Roentgenol 2014; 203:1171-80. [PMID: 25415694 DOI: 10.2214/ajr.13.11915] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Kidoh M, Nakaura T, Nakamura S, Namimoto T, Nozaki T, Sakaino N, Harada K, Yamashita Y. Contrast material and radiation dose reduction strategy for triple-rule-out cardiac CT angiography: feasibility study of non-ECG-gated low kVp scan of the whole chest following coronary CT angiography. Acta Radiol 2014; 55:1186-96. [PMID: 24311703 DOI: 10.1177/0284185113514886] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Dedicated coronary computed tomography (CT) scan has been proven to be an accurate diagnostic modality in evaluating coronary artery disease. A second phase scan starting immediately after the coronary CT scan might enable visualization of the different vascular territories of the entire chest. PURPOSE To investigate the feasibility of a contrast material and radiation dose reduction triple-rule-out (TRO) CT angiography (CTA) protocol with serial non-ECG-gated low kVp scan of the whole chest, which utilizes a recirculated contrast agent. MATERIAL AND METHODS Thirty patients were scanned with the new TRO-CTA protocol; after the coronary scan with retrospective ECG-gating, non-ECG-gated whole-chest CTA was performed at 80 kVp to evaluate aortic arch (AAr) and pulmonary trunk (PT). Another 30 patients were scanned by our conventional TRO-CTA protocol at 120 kVp with retrospective ECG-gating. We compared the estimated effective dose (ED), contrast material (CM) dose, contrast-to-noise ratio (CNR) of the ascending aorta (AAo), and the rate of patients who could achieve adequate attenuation of the AAr and PT between the two protocols. RESULTS The total ED of the new TRO-CTA protocol was 29.6% lower than that of the conventional protocol (P < 0.01). The amount of CM used for the new TRO-CTA protocol was significantly lower than in the conventional protocol (60.1 ± 9.6 mL vs. 91.8 ± 22.6 mL, P < 0.01). The CNR of the AAo was 30.2% higher with the new TRO-CTA protocol than with the conventional protocol (P < 0.01). There was no significant difference in the success rate of adequate attenuation of the AAr and PT between the two protocols (P > 0.05). CONCLUSION The new TRO-CTA protocol can reduce the total dose of radiation and the contrast dose and yield adequate vascular enhancement compared with the conventional protocol.
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Affiliation(s)
- Masafumi Kidoh
- Diagnostic Radiology, Amakusa Medical Center, Kumamoto, Japan
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takeshi Nakaura
- Diagnostic Radiology, Amakusa Medical Center, Kumamoto, Japan
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shinichi Nakamura
- Diagnostic Radiology, Amakusa Medical Center, Kumamoto, Japan
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Tomohiro Namimoto
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | | | | | - Kazunori Harada
- Department of Surgery, Amakusa Medical Center, Kumamoto, Japan
| | - Yasuyuki Yamashita
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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Kinner S, Eggebrecht H, Maderwald S, Barkhausen J, Ladd SC, Quick HH, Hunold P, Vogt FM. Dynamic MR angiography in acute aortic dissection. J Magn Reson Imaging 2014; 42:505-14. [PMID: 25430957 DOI: 10.1002/jmri.24788] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 10/14/2014] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND To evaluate the benefit (additional flow information), image quality, and diagnostic accuracy of a dynamic magnetic resonance angiography (MRA) combining high spatial and temporal resolution for the preinterventional assessment of acute aortic dissection. METHODS Nineteen patients (12 men, 7 women; aged 32-78 years) with acute aortic dissection underwent contrast-enhanced four-dimensional (4D) MRA and 3D conventional high-resolution MRA (3D MRA) within one examination on a 1.5 Tesla MR system. Both MRA datasets for each patient were evaluated and compared for image quality and visualization of vascular details on a 5-point scale (5 = excellent image quality, 1 = nondiagnostic image quality). In addition, presence and relevance of additional hemodynamic information (flow direction and organ perfusion delay) gained by dynamic MRA were assessed. RESULTS Conventional 3D MRA provided significantly higher values for image quality of the aorta and aortic side branches compared with dynamic MRA (aorta: 4.3 versus 3.3; P = 0.006 side branches: 4.2 versus 3.3; P = 0.02). However, in 10 of the 19 patients (53%) the additionally available information on flow dynamics due to dynamic MRA (e.g., delayed perfusion of parenchymal organs) led to a change in therapy planning and realization. CONCLUSION Dynamic MRA is a technique that combines functional flow and morphological information. Thus, the combination of 3D and dynamic MRA provides all requested information for treatment planning in patients suffering from acute aortic dissection.
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Affiliation(s)
- Sonja Kinner
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany
| | | | - Stefan Maderwald
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany
| | - Jörg Barkhausen
- Clinic for Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck / Germany
| | - Susanne C Ladd
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany
| | - Harald H Quick
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany
| | - Peter Hunold
- Clinic for Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck / Germany
| | - Florian M Vogt
- Clinic for Radiology and Nuclear Medicine, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck / Germany
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Patel M, Patel S, Moskowitz C, Chen B. Complex thoracic aortic dissection. West J Emerg Med 2014; 15:667-8. [PMID: 25247040 PMCID: PMC4162726 DOI: 10.5811/westjem.2014.7.22843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 07/07/2014] [Indexed: 11/21/2022] Open
Affiliation(s)
- Mihir Patel
- Yale School of Medicine, St. Mary's Hospital, Department of Medicine, Waterbury, Connecticut
| | - Samir Patel
- Northside Medical Center, Department of Medicine, Youngstown, Ohio
| | - Craig Moskowitz
- Yale School of Medicine, St. Mary's Hospital, Department of Medicine, Waterbury, Connecticut
| | - Brandon Chen
- Yale School of Medicine, St. Mary's Hospital, Department of Medicine, Waterbury, Connecticut
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Kupeli S. Risks and diagnosis of coronary artery disease in Hodgkin lymphoma survivors. World J Cardiol 2014; 6:555-561. [PMID: 25068016 PMCID: PMC4110604 DOI: 10.4330/wjc.v6.i7.555] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 05/14/2014] [Indexed: 02/06/2023] Open
Abstract
Higher mortality rates are reported because of cardiovascular diseases in individuals living in industrialized areas of the World. In cancer patients, cardiotoxic chemotherapeutic agents and/or mediastinal radiotherapy are additional risk factors for the development of coronary artery disease. An improved survival rate for patients with Hodgkin lymphoma was reported in recent decades. Determining and handling the long-term effects of cancer treatment have become more important nowadays, parallel to the good results reached in survival rates. Mediastinal radiotherapy and cardiotoxic chemotherapeutic agents are routinely used to treat Hodgkin lymphoma but are commonly associated with a variety of cardiovascular complications. Drugs used in cancer treatment and radiotherapy may cause deleterious effects on contractile capacity and conduction system of the heart. Approximately ten years after the completion of all therapies, the cardiovascular disease risk peaks in patients who survived from Hodgkin lymphoma. The value of coronary computed tomography angiography as a diagnostic tool in determining coronary artery disease as early as possible is underlined in this review, in patients who are in remission and carry the risk of coronary artery disease probably because of chemo/radiotherapy used in their treatment. Survivors of Hodgkin lymphoma especially treated with combined chemoradiotherapy at younger ages are candidates for coronary computed tomography angiography.
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Goldberg JB, Kim JB, Sundt TM. Current understandings and approach to the management of aortic intramural hematomas. Semin Thorac Cardiovasc Surg 2014; 26:123-31. [PMID: 25441003 DOI: 10.1053/j.semtcvs.2014.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2014] [Indexed: 01/20/2023]
Abstract
Intramural hematoma is the most enigmatic of the 3 lethal entities comprising acute aortic syndrome. Despite being identified almost 100 years ago, there is considerable controversy surrounding the definition, etiology, management, and the very existence of intramural hematoma. The following review outlines these controversies and discusses their effect on management strategies.
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Affiliation(s)
- Joshua B Goldberg
- Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Joon Bum Kim
- Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Thoralf M Sundt
- Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
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Rubin GD, Leipsic J, Joseph Schoepf U, Fleischmann D, Napel S. CT angiography after 20 years: a transformation in cardiovascular disease characterization continues to advance. Radiology 2014; 271:633-52. [PMID: 24848958 DOI: 10.1148/radiol.14132232] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Through a marriage of spiral computed tomography (CT) and graphical volumetric image processing, CT angiography was born 20 years ago. Fueled by a series of technical innovations in CT and image processing, over the next 5-15 years, CT angiography toppled conventional angiography, the undisputed diagnostic reference standard for vascular disease for the prior 70 years, as the preferred modality for the diagnosis and characterization of most cardiovascular abnormalities. This review recounts the evolution of CT angiography from its development and early challenges to a maturing modality that has provided unique insights into cardiovascular disease characterization and management. Selected clinical challenges, which include acute aortic syndromes, peripheral vascular disease, aortic stent-graft and transcatheter aortic valve assessment, and coronary artery disease, are presented as contrasting examples of how CT angiography is changing our approach to cardiovascular disease diagnosis and management. Finally, the recently introduced capabilities for multispectral imaging, tissue perfusion imaging, and radiation dose reduction through iterative reconstruction are explored with consideration toward the continued refinement and advancement of CT angiography.
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Affiliation(s)
- Geoffrey D Rubin
- From the Duke Clinical Research Institute, 2400 Pratt St, Box 17969, Durham, NC 27715 (G.D.R.); Department of Medical Imaging and Division of Cardiology, University of British Columbia, Vancouver, BC, Canada (J.L.); Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S.); and Department of Radiology, Stanford University School of Medicine, Stanford, Calif (D.F., S.N.)
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Kruse MJ, Fishman EK, Zimmerman SL. Characterization of Aortic Dissection: What the Radiologist Needs to Know. CURRENT CARDIOVASCULAR IMAGING REPORTS 2014. [DOI: 10.1007/s12410-014-9273-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Christensen JD, Seaman DM, Lungren MP, Hurwitz LM, Boll DT. Assessment of vascular contrast and wall motion of the aortic root and ascending aorta on MDCT angiography: dual-source high-pitch vs non-gated single-source acquisition schemes. Eur Radiol 2014; 24:990-7. [PMID: 24573567 DOI: 10.1007/s00330-014-3120-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/31/2014] [Accepted: 02/10/2014] [Indexed: 12/18/2022]
Abstract
OBJECTIVES This retrospective study assessed whether dual-source high-pitch computed tomographic angiography (CTA) offered advantages over single-source standard-pitch techniques in the evaluation of the ascending aorta. METHODS Twenty patients who received both thoracic dual-source high-pitch and single-source standard-pitch CTAs within 1 year were assessed. Dual-source CTAs were performed; standard-pitch imaging used dose-modulated 120 kVp/150 mAs and 0.8 pitch compared with high-pitch protocols employing dose-modulated 120 kVp/250 mAs and 2.4 target pitch. Radiation dose was documented. Contrast-to-noise ratios (CNRs) at sinuses of the Valsalva (CNRValsalva) and ascending aorta (CNRAorta) were calculated. Dose/CNR for each technique was compared with paired t-tests. Motion at aortic valve, aortic root and ascending aorta were assessed with four-point scales and Mann-Whitney U tests; longitudinal extension of motion was compared with paired t-tests. RESULTS Significantly lower motion scores for high-pitch, compared with standard-pitch acquisitions for aortic annulus, 0 vs. 2, aortic root, 0 vs. 3, and ascending aorta, 0 vs. 2, were achieved. Significantly reduced longitudinal extension of motion at aortic root, 4.9 mm vs 15.7 mm, and ascending aorta, 4.9 mm vs 21.6 mm, was observed. Contrast was not impacted: CNRValsalva, 45.6 vs 46.3, and CNRAorta, 45.3 vs 47.1. CTDIvol was significantly decreased for high-pitch acquisitions, 13.9 mGy vs 15.8 mGy. CONCLUSIONS Dual-source high-pitch CTAs significantly decreased motion artefact without negatively impacting vascular contrast and radiation dose. KEY POINTS • Dual-source high-pitch CTA significantly decreased motion artefact of the ascending aorta. • Dual-source high-pitch CTA did not negatively impact on vascular contrast. • Dual-source high-pitch CTA significantly decreased radiation dose compared with single-source standard-pitch acquisitions.
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Affiliation(s)
- Jared D Christensen
- Department of Radiology, Duke University Medical Center, Durham, NC, 27710, USA
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Kurabayashi M, Okishige K, Ueshima D, Yoshimura K, Shimura T, Suzuki H, Mitsutoshi A, Aoyagi H, Otani Y, Isobe M. Diagnostic Utility of Unenhanced Computed Tomography for Acute Aortic Syndrome. Circ J 2014; 78:1928-34. [DOI: 10.1253/circj.cj-14-0198] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Kaoru Okishige
- Division of Cardiology, Yokohama City Minato Red Cross Hospital
| | - Daisuke Ueshima
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University
| | | | - Tsukasa Shimura
- Division of Cardiology, Yokohama City Minato Red Cross Hospital
| | | | | | - Hideshi Aoyagi
- Division of Cardiology, Yokohama City Minato Red Cross Hospital
| | - Yoichi Otani
- Division of Radiology, Yokohama City Minato Red Cross Hospital
| | - Mitsuaki Isobe
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University
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Nagra K, Coulden R, McMurtry MS. A type A aortic dissection missed by non-cardiac gated contrast-enhanced computed tomography due to an aortic root dissection flap masquerading as an aortic valve apparatus: a case report. J Med Case Rep 2013; 7:285. [PMID: 24377648 PMCID: PMC3883470 DOI: 10.1186/1752-1947-7-285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 11/12/2013] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Though computed tomographic angiography has very high sensitivity and specificity to diagnose acute aortic dissection, false-negative studies can occur and secondary tests may be required to make the diagnosis. CASE PRESENTATION We report the case of a 57-year-old Caucasian man with a typical presentation for acute type A aortic dissection in whom the initial non-cardiac gated computed tomographic angiogram was negative, leading to a delay in surgical management. Transesophageal echocardiography and post hoc 3D reconstruction of the original computed tomographic scan revealed a dissection flap confined to the aortic root, immediately superior to the sinuses of Valsalva and masquerading as part of the aortic valve apparatus. CONCLUSION This case demonstrates that false-negative computed tomographic angiograms taken to rule out type A aortic dissection can occur and that secondary imaging tests, such as echocardiography, should be performed in cases in which the pre-test probability of aortic dissection is high. Cardiac gating of computed tomographic angiograms to exclude aortic dissection may enhance diagnostic accuracy.
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Affiliation(s)
| | | | - Michael Sean McMurtry
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, 2C2 WMHSC, 8440 112th Street, Edmonton, AB T6G 2B7, Canada.
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The role of aortic wall CT attenuation measurements for the diagnosis of acute aortic syndromes. Eur J Radiol 2013; 82:2392-8. [DOI: 10.1016/j.ejrad.2013.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/26/2013] [Accepted: 09/08/2013] [Indexed: 10/26/2022]
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Gardner JB, Fruauff AM, Bhalla S, Katz DS. Computed tomography of nontraumatic thoracoabdominal aortic emergencies. Semin Roentgenol 2013; 49:143-56. [PMID: 24836490 DOI: 10.1053/j.ro.2013.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Alana M Fruauff
- Department of Radiology, Winthrop-University Hospital, Mineola, NY
| | - Sanjeev Bhalla
- Mallinckrodt Institute of Radiology, Washington University, St. Louis, MO
| | - Douglas S Katz
- Department of Radiology, Winthrop-University Hospital, Mineola, NY.
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Sakamoto S, Taniguchi N, Nakajima S, Takahashi A. Diagnostic value of nonenhanced multidetector computed tomography for ruling out acute aortic dissection in patients presenting with chest or back pain. Int J Cardiol 2013; 168:734-8. [PMID: 23089285 DOI: 10.1016/j.ijcard.2012.09.219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2012] [Revised: 09/12/2012] [Accepted: 09/29/2012] [Indexed: 11/26/2022]
Abstract
BACKGROUND Multidetector computed tomography (MDCT) is widely used for diagnosing acute aortic dissection (AAD). However, the diagnostic value of nonenhanced MDCT for AAD remains unknown. We evaluated the usefulness of nonenhanced 64-slice MDCT for ruling out AAD in patients presenting with chest or back pain. METHODS Of 107 patients with clinical suspicion of AAD who underwent MDCT, AAD was confirmed in 47 and ruled out in 60. Nonenhanced MDCT data of all patients were retrospectively assessed by 2 independent observers unaware of clinical information and contrast-enhanced MDCT data. The diagnostic performance of nonenhanced MDCT parameters to detect AAD was calculated. RESULTS AND CONCLUSION Among the parameters, positive intimal flap, defined as the clear presence of a high-density membrane-like structure in the aorta on serial axial images, had a sensitivity of 87%, a specificity of 100%, a positive predictive value (PPV) of 100%, and a negative predictive value (NPV) of 91%, respectively. The addition of equivocal intimal flap, defined as the ambiguous presence of a high-density membrane-like structure in the aorta on at least one axial image, increased both the sensitivity and NPV to 96%. Furthermore, the combination of intimal flap (positive+equivocal or positive alone) and high-density area in the aorta showed the highest sensitivity (98%) and NPV (98%). Combination of the nonenhanced MDCT parameters intimal flap and high-density area in the aorta provides excellent sensitivity and NPV, suggesting that nonenhanced MDCT is an effective modality for ruling out AAD in patients with chest or back pain.
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Affiliation(s)
- Shingo Sakamoto
- Department of Cardiovascular Medicine, Sakurakai Takahashi Hospital, Hyogo, Japan.
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Lovy AJ, Bellin E, Levsky JM, Esses D, Haramati LB. Preliminary development of a clinical decision rule for acute aortic syndromes. Am J Emerg Med 2013; 31:1546-50. [PMID: 24055476 DOI: 10.1016/j.ajem.2013.06.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 06/07/2013] [Accepted: 06/22/2013] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE Patients with suspected acute aortic syndromes (AAS) often undergo computed tomography (CT) with negative results. We sought clinical and diagnostic criteria to identify low-risk patients, an initial step in developing a clinical decision rule. METHODS We retrospectively identified all adults presenting to our emergency department (ED) from January 1, 2006, to August 1, 2010, who underwent CT angiography for suspected AAS without prior trauma or AAS. A total of 1465 patients met inclusion criteria; a retrospective case-controlled review (ratio 1:4) was conducted. Cases were diagnosed with aortic dissection, intramural hematoma, penetrating atherosclerotic ulcer, or ruptured aneurysm. RESULTS Of the patients who underwent CT, 2.7% (40/1465) had an AAS; 2 additional cases were diagnosed after admission (ED miss rate, 5% [2/42]). Patients with AAS were significantly older than controls (66 vs 59 years; P = .008). Risk factors included abnormal chest radiograph (sensitivity, 79% [26/33]; specificity, 82% [113/137]) and acute chest pain (sensitivity, 83% [29/35]; specificity, 71% [111/157]). None of the 19 patients with resolved pain upon ED presentation had AAS. These data support a 2-step rule: first screen for ongoing pain; if present, screen for acute chest pain or an abnormal chest radiograph. This approach achieves a 54% (84/155) reduction in CT usage with a sensitivity for AAS of 96% (95% confidence interval, 89%-100%), negative predictive value of 99.8% (99.4%-100%), and a false-negative rate of 1.7% (1/84). CONCLUSIONS Our results demonstrate a need to safely identify patients at low risk for AAS who can forgo CT. We developed a preliminary 2-step clinical decision rule, which requires validation.
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Affiliation(s)
- Andrew J Lovy
- Mount Sinai Medical Center, Department of Orthopedics, New York, NY
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