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  1. Artikel ; Online: 3D dissimilar-siamese-u-net for hyperdense Middle cerebral artery sign segmentation.

    You, Jia / Yu, Philip L H / Tsang, Anderson C O / Tsui, Eva L H / Woo, Pauline P S / Lui, Carrie S M / Leung, Gilberto K K / Mahboobani, Neeraj / Chu, Chi-Yeung / Chong, Wing-Ho / Poon, Wai-Lun

    Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society

    2021  Band 90, Seite(n) 101898

    Abstract: The hyperdense middle cerebral artery sign (HMCAS) representing a thromboembolus has been declared as a vital CT finding for intravascular thrombus in the diagnosis of acute ischemia stroke. Early recognition of HMCAS can assist in patient triage and ... ...

    Abstract The hyperdense middle cerebral artery sign (HMCAS) representing a thromboembolus has been declared as a vital CT finding for intravascular thrombus in the diagnosis of acute ischemia stroke. Early recognition of HMCAS can assist in patient triage and subsequent thrombolysis or thrombectomy treatment. A total of 624 annotated head non-contrast-enhanced CT (NCCT) image scans were retrospectively collected from multiple public hospitals in Hong Kong. In this study, we present a deep Dissimilar-Siamese-U-Net (DSU-Net) that is able to precisely segment the lesions by integrating Siamese and U-Net architectures. The proposed framework consists of twin sub-networks that allow inputs of left and right hemispheres in head NCCT images separately. The proposed Dissimilar block fully explores the feature representation of the differences between the bilateral hemispheres. Ablation studies were carried out to validate the performance of various components of the proposed DSU-Net. Our findings reveal that the proposed DSU-Net provides a novel approach for HMCAS automatic segmentation and it outperforms the baseline U-Net and many state-of-the-art models for clinical practice.
    Mesh-Begriff(e) Humans ; Middle Cerebral Artery ; Retrospective Studies ; Stroke/diagnostic imaging ; Tomography, X-Ray Computed ; Triage
    Sprache Englisch
    Erscheinungsdatum 2021-03-14
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 639451-6
    ISSN 1879-0771 ; 0895-6111
    ISSN (online) 1879-0771
    ISSN 0895-6111
    DOI 10.1016/j.compmedimag.2021.101898
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

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    Verfügbar in ZB MED Köln/Königswinter

    Zs.A 1323: Hefte anzeigen Standort:
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    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
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  2. Artikel: Treatment of Intracranial Aneurysms with Flow Re-direction Endoluminal Device - A Single Centre Experience with Short-term Follow-up Results.

    Mahboobani, Neeraj Ramesh / Chong, Wing Ho / Lam, Samuel Siu Kei / Siu, Jimmy Chi Wai / Tan, Chong Boon / Wong, Yiu Chung

    Neurointervention

    2017  Band 12, Heft 1, Seite(n) 11–19

    Abstract: Purpose: A flow diverter (FD) is an effective treatment option for intracranial aneurysms. The Flow Re-direction Endoluminal Device (FRED) is a relatively new flow diverter with a unique dual-layer design. We report our experience and short-term results ...

    Abstract Purpose: A flow diverter (FD) is an effective treatment option for intracranial aneurysms. The Flow Re-direction Endoluminal Device (FRED) is a relatively new flow diverter with a unique dual-layer design. We report our experience and short-term results with the FRED.
    Materials and methods: We did a retrospective review of all consecutive cases in which the FRED was used to treat intracranial aneurysms at a single institution from March 2014 till December 2015. Clinical parameters, aneurysm characteristics, technical results and short-term outcomes were reviewed.
    Results: Eleven intracranial aneurysms were treated with the FRED in 11 patients. The technical device deployment success rate was 100%. Immediate reduction in intra-aneurysmal flow after deployment was noted in 10 cases. The aneurysm occlusion rate at 6 months was 75%. There was 1 complication of in-stent thrombosis immediately after deployment. There was no side branch occlusion, delayed aneurysm rupture, stroke, or intraparenchymal haemorrhage. There was no neurological deficit, morbidity, or mortality.
    Conclusion: The FRED is a new FD. It has shown to be safe and effective in our series. The unique dual-layer design of the device renders it to have technical advantages over other FDs. The 6-month aneurysm occlusion rate and complication profile of FRED are similar to other FDs.
    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2017-03-06
    Erscheinungsland Korea (South)
    Dokumenttyp Journal Article
    ZDB-ID 2639823-0
    ISSN 2233-6273 ; 2093-9043
    ISSN (online) 2233-6273
    ISSN 2093-9043
    DOI 10.5469/neuroint.2017.12.1.11
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Early Enlargement of Aneurysmal Sac and Separation of EndoBags of Nellix Endovascular Aneurysm Sealing System as Signs of Increased Risk of Later Aneurysm Rupture.

    Cheng, Lik Fai / Cheung, Kwok Fai / Chan, Kwong Man / Ma, Johnny Ka Fai / Luk, Wing Hang / Chan, Micah Chi King / Ng, Carol Wing Kei / Mahboobani, Neeraj Ramesh / Ng, Wai Kin / Wong, Ting

    Cardiovascular and interventional radiology

    2016  Band 39, Heft 11, Seite(n) 1654–1657

    Abstract: Nellix Endovascular Aneurysm Sealing (EVAS) system is a new concept and technology of abdominal aortic aneurysm (AAA) repair. Elective EVAS using Nellix device was performed for a 83-year-old man with AAA. 2-month post-EVAS CTA surveillance demonstrated ... ...

    Abstract Nellix Endovascular Aneurysm Sealing (EVAS) system is a new concept and technology of abdominal aortic aneurysm (AAA) repair. Elective EVAS using Nellix device was performed for a 83-year-old man with AAA. 2-month post-EVAS CTA surveillance demonstrated mild enlargement of aneurysmal sac and separation of the EndoBags, but without detectable endoleak. The patient developed sudden AAA rupture with retroperitoneal hematoma at about 4 months after EVAS. We postulated that early enlargement of aneurysmal sac and separation of EndoBags of Nellix devices after EVAS, even without detectable endoleak, might indicate significant aneurysmal wall weakening with increased risk of later AAA rupture. To the best of the authors' knowledge, this was the first reported case of aortic rupture after EVAS without detectable endoleak during and after the procedure.
    Mesh-Begriff(e) Aged, 80 and over ; Aorta, Abdominal/diagnostic imaging ; Aorta, Abdominal/surgery ; Aortic Aneurysm, Abdominal/diagnostic imaging ; Aortic Aneurysm, Abdominal/surgery ; Aortic Rupture/diagnostic imaging ; Aortic Rupture/surgery ; Aortography/methods ; Endovascular Procedures/instrumentation ; Humans ; Male ; Postoperative Complications/surgery ; Prosthesis Failure ; Risk ; Stents ; Time ; Tomography, X-Ray Computed/methods ; Treatment Outcome
    Sprache Englisch
    Erscheinungsdatum 2016-11
    Erscheinungsland United States
    Dokumenttyp Case Reports ; Journal Article
    ZDB-ID 603082-8
    ISSN 1432-086X ; 0342-7196 ; 0174-1551
    ISSN (online) 1432-086X
    ISSN 0342-7196 ; 0174-1551
    DOI 10.1007/s00270-016-1416-0
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

    Zusatzmaterialien

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    Verfügbar in ZB MED Köln/Königswinter

    Zs.A 1378: Hefte anzeigen Standort:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Über subito bestellen

    Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.

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