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  1. Article ; Online: Beyond the

    Hammer, Mark M / Raptis, Constantine A

    AJR. American journal of roentgenology

    2023  

    Language English
    Publishing date 2023-08-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 82076-3
    ISSN 1546-3141 ; 0361-803X ; 0092-5381
    ISSN (online) 1546-3141
    ISSN 0361-803X ; 0092-5381
    DOI 10.2214/AJR.23.30091
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Intramural Hematoma and Focal Intimal Disruption: The Importance of Communication.

    Raptis, Constantine A / Braverman, Alan C

    Radiology

    2021  Volume 301, Issue 2, Page(s) 320–321

    MeSH term(s) Aneurysm, Dissecting ; Communication ; Hematoma/diagnostic imaging ; Humans
    Language English
    Publishing date 2021-08-10
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 80324-8
    ISSN 1527-1315 ; 0033-8419
    ISSN (online) 1527-1315
    ISSN 0033-8419
    DOI 10.1148/radiol.2021211564
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: COVID-19 and Pulmonary Thromboembolism.

    Hammer, Mark M / Raptis, Constantine A

    Radiology

    2021  Volume 299, Issue 2, Page(s) E252

    MeSH term(s) Anticoagulants ; COVID-19 ; Humans ; Pulmonary Embolism/diagnostic imaging ; SARS-CoV-2 ; Venous Thrombosis
    Chemical Substances Anticoagulants
    Language English
    Publishing date 2021-03-09
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 80324-8
    ISSN 1527-1315 ; 0033-8419
    ISSN (online) 1527-1315
    ISSN 0033-8419
    DOI 10.1148/radiol.2021204709
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Subclavian Artery: Anatomic Review and Imaging Evaluation of Abnormalities.

    Robb, Caroline L / Bhalla, Sanjeev / Raptis, Constantine A

    Radiographics : a review publication of the Radiological Society of North America, Inc

    2022  Volume 42, Issue 7, Page(s) 2149–2165

    Abstract: The subclavian artery is an important structure that may be overlooked at CT of the chest and neck, in part because of its anatomic location at the periphery of the field of view but also because the clinical indication for CT examinations infrequently ... ...

    Abstract The subclavian artery is an important structure that may be overlooked at CT of the chest and neck, in part because of its anatomic location at the periphery of the field of view but also because the clinical indication for CT examinations infrequently directs attention specifically to evaluation of the subclavian artery. As with all arteries, the subclavian artery has the potential to be involved in a variety of abnormalities, including pseudoaneurysms, dissections, stenosis or thrombosis, and vasculopathies. In addition, the subclavian artery can be secondarily involved as a collateral pathway because of an abnormality elsewhere. The subclavian artery may also be involved in surgical procedures to supply blood to other sites in the body or as an arterial access site. In these cases, recognizing the postsurgical appearance of the subclavian artery has become increasingly complex because of the use of the artery in an increasing number of procedures. Recognizing expected postoperative changes remains important to avoid mistaking them for abnormalities. The authors describe the imaging appearance of the normal anatomy of the subclavian artery and its anatomic variants, related abnormalities, and important postsurgical considerations.
    MeSH term(s) Humans ; Subclavian Artery/surgery ; Aneurysm, False ; Thorax
    Language English
    Publishing date 2022-09-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 603172-9
    ISSN 1527-1323 ; 0271-5333
    ISSN (online) 1527-1323
    ISSN 0271-5333
    DOI 10.1148/rg.220064
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: COVID-19 in the Radiology Literature: A Look Back.

    Hammer, Mark M / Raptis, Constantine A / Henry, Travis S / Bhalla, Sanjeev

    Radiology. Cardiothoracic imaging

    2022  Volume 4, Issue 4, Page(s) e220102

    Language English
    Publishing date 2022-07-14
    Publishing country United States
    Document type Editorial
    ISSN 2638-6135
    ISSN (online) 2638-6135
    DOI 10.1148/ryct.220102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Emergent Magnetic Resonance Angiography for Evaluation of the Thoracoabdominal and Peripheral Vasculature.

    Ludwig, Daniel R / Raptis, Constantine A / Bhalla, Sanjeev

    Magnetic resonance imaging clinics of North America

    2022  Volume 30, Issue 3, Page(s) 465–477

    Abstract: Thoracoabdominal and peripheral vasculature pathologies include a variety of severe and life threatening conditions that may be encountered in the emergent setting. Computed tomography angiography (CTA) is the first-line modality for imaging of the ... ...

    Abstract Thoracoabdominal and peripheral vasculature pathologies include a variety of severe and life threatening conditions that may be encountered in the emergent setting. Computed tomography angiography (CTA) is the first-line modality for imaging of the vasculature in this context, but magnetic resonance angiography (MRA) also plays an important and emerging role in the evaluation of carefully selected patients. Intravenous (IV) iodinated contrast is necessary for CTA, although MRA is most useful in patients who cannot receive IV iodinated contrast for reasons including prior severe allergic-like reaction to iodinated contrast, poor IV access, or severe renal insufficiency. Gadolinium-based contrast agents are administered for MRA when possible, as they generally improve the diagnostic quality and shorten the duration of the exam. In most clinical situations, however, noncontrast MRA is sufficient to obtain a diagnostic evaluation. In this review, we discuss the key strengths and limitations of MRA performed in the emergent setting, highlighting the role of MRA in the diagnosis of acute aortic syndromes, aortitis, aortic aneurysm, pulmonary embolism, and peripheral vascular disease.
    MeSH term(s) Contrast Media ; Humans ; Magnetic Resonance Angiography/methods ; Magnetic Resonance Imaging/methods ; Tomography, X-Ray Computed
    Chemical Substances Contrast Media
    Language English
    Publishing date 2022-08-22
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1196851-5
    ISSN 1557-9786 ; 1064-9689
    ISSN (online) 1557-9786
    ISSN 1064-9689
    DOI 10.1016/j.mric.2022.04.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Perspectives on the Evolution of Diagnosis and Management of Acute Pulmonary Embolism.

    Raptis, Constantine A / Steinbrecher, Kacie L / Marquis, Kaitlin M

    Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes

    2021  Volume 73, Issue 1, Page(s) 17–18

    MeSH term(s) Acute Disease ; Diagnostic Imaging/methods ; Humans ; Pulmonary Artery/diagnostic imaging ; Pulmonary Artery/surgery ; Pulmonary Embolism/diagnostic imaging ; Pulmonary Embolism/surgery ; Pulmonary Embolism/therapy ; Thrombectomy/methods
    Language English
    Publishing date 2021-07-27
    Publishing country United States
    Document type Editorial
    ZDB-ID 418190-6
    ISSN 1488-2361 ; 0846-5371 ; 0008-2902
    ISSN (online) 1488-2361
    ISSN 0846-5371 ; 0008-2902
    DOI 10.1177/08465371211026530
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    Zs.A 299: Show issues Location:
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  8. Article ; Online: Evaluation and Utilization of Flow Artifacts at CT.

    Robb, Caroline L / Marquis, Kaitlin M / Steinbrecher, Kacie L / Hammer, Mark M / Henry, Travis / Bhalla, Sanjeev / Raptis, Constantine A

    Radiographics : a review publication of the Radiological Society of North America, Inc

    2024  Volume 44, Issue 5, Page(s) e230134

    Abstract: Flow artifacts are commonly encountered at contrast-enhanced CT and can be difficult to discern from true pathologic conditions. Therefore, radiologists must be comfortable distinguishing flow artifacts from true pathologic conditions. This is of ... ...

    Abstract Flow artifacts are commonly encountered at contrast-enhanced CT and can be difficult to discern from true pathologic conditions. Therefore, radiologists must be comfortable distinguishing flow artifacts from true pathologic conditions. This is of particular importance when evaluating the pulmonary arteries and aorta, as a flow artifact may be mistaken for a pulmonary embolism or dissection flap. Understanding the mechanics of flow artifacts and how these artifacts are created can help radiologists in several ways. First, this knowledge can help radiologists appreciate how the imaging characteristics of flow artifacts differ from true pathologic conditions. This information can also help radiologists better recognize the clinical conditions that predispose patients to flow artifacts, such as pneumonia, chronic lung damage, and altered cardiac output. By understanding when flow artifacts may be confounding the interpretation of an examination, radiologists can then know when to pursue other troubleshooting methods to assist with the diagnosis. In these circumstances, the radiologist can consider several troubleshooting methods, including adjusting the imaging protocols, recommending when additional imaging may be helpful, and suggesting which imaging study would be the most beneficial. Finally, flow artifacts can also be used as a diagnostic tool when evaluating the vascular anatomy, examples of which include the characterization of shunts, venous collaterals, intimomedial flaps, and alternative patterns of blood flow, as seen in extracorporeal membrane oxygenation circuits.
    MeSH term(s) Artifacts ; Humans ; Tomography, X-Ray Computed/methods ; Contrast Media ; Pulmonary Artery/diagnostic imaging ; Pulmonary Embolism/diagnostic imaging
    Chemical Substances Contrast Media
    Language English
    Publishing date 2024-03-25
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 603172-9
    ISSN 1527-1323 ; 0271-5333
    ISSN (online) 1527-1323
    ISSN 0271-5333
    DOI 10.1148/rg.230134
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Reply to "Critical Review of the Literature on Chest CT and Coronavirus Disease (COVID-19): Data Adjustment".

    Raptis, Constantine A / Hammer, Mark M / Henry, Travis S

    AJR. American journal of roentgenology

    2020  Volume 215, Issue 2, Page(s) W28

    MeSH term(s) Betacoronavirus ; COVID-19 ; Coronavirus ; Coronavirus Infections ; Humans ; Pandemics ; Pneumonia, Viral ; Research Design ; SARS-CoV-2 ; Tomography, X-Ray Computed
    Keywords covid19
    Language English
    Publishing date 2020-06-01
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 82076-3
    ISSN 1546-3141 ; 0361-803X ; 0092-5381
    ISSN (online) 1546-3141
    ISSN 0361-803X ; 0092-5381
    DOI 10.2214/AJR.20.23564
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Chest Computed Tomography for Detection of Coronavirus Disease 2019 (COVID-19): Don't Rush the Science.

    Hope, Michael D / Raptis, Constantine A / Henry, Travis S

    Annals of internal medicine

    2020  Volume 173, Issue 2, Page(s) 147–148

    MeSH term(s) Betacoronavirus ; COVID-19 ; Coronavirus Infections/diagnostic imaging ; Diagnosis, Differential ; Humans ; Infection Control/methods ; Pandemics ; Peer Review, Research ; Periodicals as Topic ; Pneumonia, Viral/diagnostic imaging ; Radiography, Thoracic ; Reverse Transcriptase Polymerase Chain Reaction ; SARS-CoV-2 ; Tomography, X-Ray Computed
    Keywords covid19
    Language English
    Publishing date 2020-04-08
    Publishing country United States
    Document type Editorial
    ZDB-ID 336-0
    ISSN 1539-3704 ; 0003-4819
    ISSN (online) 1539-3704
    ISSN 0003-4819
    DOI 10.7326/M20-1382
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