Publications
116 results found
Rafii-Tari H, Payne CJ, Riga C, et al., 2012, Assessment of Navigation Cues with Proximal Force Sensing during Endovascular Catheterization., MICCAI (2), Publisher: Springer, Pages: 560-567
Lee SL, Riga C, Crowie L, et al., 2011, An instantiability index for intra-operative tracking of 3D anatomy and interventional devices, Pages: 49-56, ISSN: 0302-9743
The tracking of tissue deformation, imaging probes and surgical instruments is an integral part of intra-operative surgical guidance. While the recent introduction of shape instantiation provides a systematic framework for tracking 3D anatomy in real-time, deviations to the desired imaging location can affect the accuracy of the predicted shape. To examine the sensitivity of the prescribed image planes to such errors, we introduce in this paper a new Instantiability Index for providing the intrinsic level of robustness while using such scan planes for the tracking of anatomy and interventional devices. Optimisation of the Index is applied to 3D anatomical reconstruction and the localisation of an intraoperative imaging device. Results are shown on detailed phantom experiments for both real-time 3D shape instantiation and imaging catheter tracking. © 2011 Springer-Verlag.
Riga CV, Bicknell CD, Sidhu R, et al., 2011, Advanced Catheter Technology: Is This the Answer to Overcoming the Long Learning Curve in Complex Endovascular Procedures, EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY, Vol: 42, Pages: 531-538, ISSN: 1078-5884
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- Citations: 27
Riga CV, McWilliams RG, Cheshire NJW, 2011, In situ fenestrations for the aortic arch and visceral segment: advances and challenges., Perspect Vasc Surg Endovasc Ther, Vol: 23, Pages: 161-165
The management of complex aortic pathologies remains a major challenge particularly in the emergency setting. Bespoke fenestrated and branch stent graft technology has shown encouraging short- and mid-term results in selected patients. Despite tremendous technological advances in this field however, factors such as the inherent delay in device manufacturing, anatomical and technical challenges, high degree of planning, and cost hinder the wider applications of minimally invasive endovascular therapy. In situ fenestration of aortic stent grafts is an attractive alternative that eliminates the need for preoperative custom tailoring with the potential to widen the therapeutic options available and to offer a bailout option after inadvertent side branch occlusion. This article summarizes the principles of this technique and discusses its current applications.
Cochennec F, Riga CV, Allaire E, et al., 2011, Contemporary management of splanchnic andrenal artery aneurysms: results of endovascular compared with open surgery fromtwo European vascular centers., Eur J Vasc Endovasc Surg., Vol: 42, Pages: 340-346
Riga CV, Bicknell CD, Hamady MS, et al., 2011, Evaluation of robotic endovascular catheters for arch vessel cannulation, JOURNAL OF VASCULAR SURGERY, Vol: 54, Pages: 799-809, ISSN: 0741-5214
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- Citations: 68
Riga CV, Bicknell CD, Hamady MS, et al., 2011, Robotically-steerable catheters and their role in the visceral aortic segment, JOURNAL OF CARDIOVASCULAR SURGERY, Vol: 52, Pages: 353-362, ISSN: 0021-9509
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- Citations: 6
Albayati MA, Gohel MS, Patel SR, et al., 2011, Identification of Patient Safety Improvement Targets in Successful Vascular and Endovascular Procedures: Analysis of 251 hours of Complex Arterial Surgery, EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY, Vol: 41, Pages: 795-802, ISSN: 1078-5884
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- Citations: 30
Antoniou GA, Riga CV, Mayer EK, et al., 2011, Clinical applications of robotic technology in vascular and endovascular surgery, JOURNAL OF VASCULAR SURGERY, Vol: 53, Pages: 493-499, ISSN: 0741-5214
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- Citations: 96
Cochennec F, Riga C, Cheshire N, 2011, Hybrid Procedures for Thoraco-Abdominal Aortic Aneurysm The St Mary's Hospital Experience, THORACO-ABDOMINAL AORTA: SURGICAL AND ANESTHETIC MANAGEMENT, Editors: Chiesa, Melissano, Zangrillo, Publisher: SPRINGER, Pages: 441-450, ISBN: 978-88-470-1856-3
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- Citations: 2
Lee S-L, Riga C, Crowie L, et al., 2011, An Instantiability Index for Intra-operative Tracking of 3D Anatomy and Interventional Devices, 14th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI 2011), Publisher: SPRINGER-VERLAG BERLIN, Pages: 49-+, ISSN: 0302-9743
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- Citations: 4
Riga CV, Bicknell CD, Cheshire NJW, 2010, Hybrid and endovascular therapy for extensive thoracoabdominal aortic disease, JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY, Vol: 140, Pages: S168-S170, ISSN: 0022-5223
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- Citations: 1
Cheng Z, Tan FPP, Riga CV, et al., 2010, Analysis of Flow Patterns in a Patient-Specific Aortic Dissection Model, JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, Vol: 132, ISSN: 0148-0731
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- Citations: 97
Riga CV, Cheshire NJW, Hamady MS, et al., 2010, The role of robotic endovascular catheters in fenestrated stent grafting, JOURNAL OF VASCULAR SURGERY, Vol: 51, Pages: 810-820, ISSN: 0741-5214
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- Citations: 59
Riga C, Vazir A, Bourke T, et al., 2010, Are cardiology investigations needed for asymptomatic patients undergoing vascular surgery?, 44th Annual Scientific Meeting of the Vascular-Society-of-Great-Britain-and-Ireland, Publisher: WILEY-BLACKWELL, Pages: 8-8, ISSN: 0007-1323
Harvey KL, Riga CV, O'Connor M, et al., 2010, A rare case of aortic dissection and primary hyperaldosteronism, EJVES Extra, Vol: 20, ISSN: 1533-3167
Introduction: Rare case of a 39-year-old presenting with the triad of aortic dissection, hypertension and aldosterone-secreting adrenal tumour. Report: We discuss his management, in the acute setting and long term. Discussion: Hyperaldosteronism is increasingly recognised as a secondary cause of hypertension and is associated with higher cardiovascular complication rates than would be expected due to hypertension alone. We discuss management of a young hypertensive patient presenting with acute aortic dissection as implemented at a tertiary referral centre for Vascular Surgery. We consider the possibility that hyperaldosteronism may represent a risk factor for aortic dissection independent of elevated blood pressure. © 2010 European Society for Vascular Surgery. Published by Elsevier Ltd.
De Marco AN, Riga CV, Hamady M, et al., 2010, Robotic and navigational technologies in endovascular surgery, Vascular Disease Management, Vol: 7, ISSN: 1553-8036
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- Citations: 3
Albayati M, Riga CV, Vats A, et al., 2010, Defining the error landscape in vascular and endovascular surgery: targets for intervention and patient safety, Electronic Poster of Distinction in Association-of-Surgeons-of-Great-Britain-and-Ireland-International-Surgical-Congress, Publisher: WILEY-BLACKWELL, Pages: 17-17, ISSN: 0007-1323
Riga CV, Bicknell CD, Di Marco A, et al., 2010, NAVIGATION & ROBOTIC TECHNIQUES IN ENDOVASCULAR SURGERY, CONTROVERSIES AND UPDATES IN VASCULAR SURGERY 2010, Editors: Becquemin, Alimi, Gerard, Publisher: EDIZIONI MINERVA MEDICA, Pages: 144-149, ISBN: 978-88-7711-663-5
Bicknell CD, Riga CV, Wolfe JHN, 2009, Prevention of Paraplegia during Thoracoabdominal Aortic Aneurysm Repair, EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY, Vol: 37, Pages: 654-660, ISSN: 1078-5884
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- Citations: 57
Riga CV, Bicknell CD, Wallace D, et al., 2009, Robot-Assisted Antegrade In-Situ Fenestrated Stent Grafting, CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY, Vol: 32, Pages: 522-524, ISSN: 0174-1551
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- Citations: 50
Riga C, Bicknell C, Cheshire N, et al., 2009, Initial clinical application of arobotically steerable catheter system in endovascular aneurysm repair, J Endovasc Ther, Vol: 16, Pages: 149-153
Bicknell CD, Cheshire NJ, Riga CV, et al., 2009, Treatment of complex aneurysmal disease with fenestrated and branchedstent grafts., Eur J Vasc Endovasc Surg, Vol: 37, Pages: 175-181
Riga C, Bicknell C, Jenkins M, et al., 2009, Coil embolization of an aneurysmaltype B dissection persistent false lumen after visceral hybrid repair, J Vasc Interv Radiol, Vol: 20, Pages: 130-132
Bicknell C, Riga C, Mireskandari M, et al., 2008, Use of a molding balloon to facilitate introduction of guiding catheters in fenestrated stent-graft procedures., J Endovasc Ther, Vol: 15, Pages: 514-517
PURPOSE: To present a technique that addresses the problem of passing guiding catheters through a stent-graft fenestration and into the target orifice over the wire within the visceral vessel when the fenestration is remote from the top cap. TECHNIQUE: A compliant molding balloon is introduced into the main body of the stent-graft and inflated above the fenestration to fill the redundant space in the proximal stent-graft to prevent upward angulation and subsequent displacement of the wire from the target vessel when a less flexible catheter is passed. CONCLUSION: This technique is useful in cases with tortuous and complex anatomy and may reduce overall procedure times.
Riga C, Bicknell C, Jindal R, et al., 2008, Endovascular stenting of peripheral infected aneurysms: a temporary measure or a definitive solution in high-risk patients., Cardiovasc Intervent Radiol, Vol: 31, Pages: 1228-1235
The purpose of this study was to demonstrate the use of endovascular technology in the management of peripheral infected aneurysms in high-risk patients as a temporary measure or definitive solution. Five cases underwent successful endovascular stenting of infected aneurysms of the subclavian, femoral, and carotid arteries. All these patients were at high risk for open surgery. Covered stents were placed by percutaneous approach under local anesthesia in all patients. Postoperatively, antibiotics were continued for 3 months. A literature review using the Medline database was also undertaken, and all the relevant papers on endovascular management of peripheral infected aneurysms were taken into account. Stent deployment was successful in all patients. One patient died of mediastinal sepsis and another from type A aortic dissection 5 weeks later. Two patients required drainage of the infected hematoma. Three patients did well at a median follow-up of 1 year, with no evidence of sepsis. A review of the literature shows promising early and midterm results. Most early reports were of single cases, reflecting the low incidence of peripheral infected aneurysms. We conclude that further development of endoluminal techniques and long-term follow-up to establish the durability of stenting could potentially lead to a decrease in the high morbidity and mortality rates associated with infected aneurysmal disease in this high-risk group of patients.
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