CQDSA in Evaluation of Prognosis After EVAR

NCT02016131 | Completed

• 1 other identifier: CQDSA_EVAR
• Study Type: observational
• Target: 49
• Locations: 1 country
• Sites: 1

Brief Summary

Re-hospitalization or re-intervention is sometimes necessary to treat type I and type III endoleaks after EVAR for its persistent increasing of pressure in aneurysm lumen. Color-coded quantitative digital subtraction angiography (CQDSA) provides an easy and quick way to post-process the traditional digital subtraction angiography (DSA) which converts the peak time of the maximal contrast medium intensity into a single polychromatic image. With the help of CQDSA, a quantitative evaluation of the endoleak hemodynamics and a risk analysis of the type I or type III endoleak could be performed during the EVAR procedure. This approach may offer an objective assessment of the needs for immediate re-intervention, conservative therapy or treatment endpoint in the future.

Conditions

Endoleak; Aortic Aneurysm, Abdominal

Keywords

endoleak; EVAR; AAA; CQDSA

Outcome Measures

Primary Outcomes (4)

• Time-versus-ROI contrast intensity graph.

  The graph contains one endoleak ROI flow curve and one reference aortic flow curve (Ref). The x-axis shows time from 0 second to the maximum frame time of the image. The y-axis shows the sum of pixel intensities, namely total contrast, representing the contrast concentration within the ROI.

  15 seconds

• ROI Peak/Ref Peak

  It is the ratio of intensity peak between the endoleak and the reference in the aorta.

  15 seconds

• ROI TTP (Time to peak)

  Peak time of ROI in the vicinity of endoleak entry

  15 seconds

• ROI AUC/Ref AUC

  Area under curve (AUC) is calculated through Time-versus-ROI contrast intensity graph. The parameter here is the ratio of ROI AUC in endoleak to the reference.

  15 seconds

Study Arms (2)

none endoleak events

Patients who have no further endoleaks related adverse events including aneurysm enlargement and rupture or persistent endoleaks.

Endoleak events

Patients who undergo endoleaks related adverse events or persistent endoleaks during follow up.

Eligibility Criteria

• Age: 18 Years - 90 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients who present type I endoleak after EVAR for AAA.

You may qualify if:

• Patients who present type I or/and type III endoleak after EVAR for AAA and complete at least 3 months' follow up.

You may not qualify if:

• Patients who
• undergo surgeries which involve the segment covered by EVAR;
• present connective tissue disease, such as Marfan's Syndrome or vasculitis.
• present abdominal aortic dissection.
• present AAA rupture.
• die from non aneurysm-reltated reasons or are lost during follow up.

Sponsors & Collaborators

• Shanghai Zhongshan Hospital: lead
• Siemens Ltd., China, Shanghai, China.: collaborator

Study Sites (1)

Zhongshan Hospital

Shanghai, 200032, China

Location

Related Publications (19)

• Lederle FA, Johnson GR, Wilson SE, Chute EP, Littooy FN, Bandyk D, Krupski WC, Barone GW, Acher CW, Ballard DJ. Prevalence and associations of abdominal aortic aneurysm detected through screening. Aneurysm Detection and Management (ADAM) Veterans Affairs Cooperative Study Group. Ann Intern Med. 1997 Mar 15;126(6):441-9. doi: 10.7326/0003-4819-126-6-199703150-00004.

  PMID: 9072929 BACKGROUND

• Thompson AR, Cooper JA, Ashton HA, Hafez H. Growth rates of small abdominal aortic aneurysms correlate with clinical events. Br J Surg. 2010 Jan;97(1):37-44. doi: 10.1002/bjs.6779.

  PMID: 20013940 BACKGROUND

• Brady AR, Thompson SG, Fowkes FG, Greenhalgh RM, Powell JT; UK Small Aneurysm Trial Participants. Abdominal aortic aneurysm expansion: risk factors and time intervals for surveillance. Circulation. 2004 Jul 6;110(1):16-21. doi: 10.1161/01.CIR.0000133279.07468.9F. Epub 2004 Jun 21.

  PMID: 15210603 BACKGROUND

• Reed WW, Hallett JW Jr, Damiano MA, Ballard DJ. Learning from the last ultrasound. A population-based study of patients with abdominal aortic aneurysm. Arch Intern Med. 1997 Oct 13;157(18):2064-8. doi: 10.1001/archinte.157.18.2064.

  PMID: 9382661 BACKGROUND

• Scott RA, Ashton HA, Lamparelli MJ, Harris GJ, Stevens JW. A 14-year experience with 6 cm as a criterion for surgical treatment of abdominal aortic aneurysm. Br J Surg. 1999 Oct;86(10):1317-21. doi: 10.1046/j.1365-2168.1999.01227.x.

  PMID: 10540141 BACKGROUND

• Scott RA, Wilson NM, Ashton HA, Kay DN. Is surgery necessary for abdominal aortic aneurysm less than 6 cm in diameter? Lancet. 1993 Dec 4;342(8884):1395-6. doi: 10.1016/0140-6736(93)92756-j.

  PMID: 7901685 BACKGROUND

• Mortality results for randomised controlled trial of early elective surgery or ultrasonographic surveillance for small abdominal aortic aneurysms. The UK Small Aneurysm Trial Participants. Lancet. 1998 Nov 21;352(9141):1649-55.

  PMID: 9853436 BACKGROUND

• Lederle FA, Wilson SE, Johnson GR, Reinke DB, Littooy FN, Acher CW, Ballard DJ, Messina LM, Gordon IL, Chute EP, Krupski WC, Busuttil SJ, Barone GW, Sparks S, Graham LM, Rapp JH, Makaroun MS, Moneta GL, Cambria RA, Makhoul RG, Eton D, Ansel HJ, Freischlag JA, Bandyk D; Aneurysm Detection and Management Veterans Affairs Cooperative Study Group. Immediate repair compared with surveillance of small abdominal aortic aneurysms. N Engl J Med. 2002 May 9;346(19):1437-44. doi: 10.1056/NEJMoa012573.

  PMID: 12000813 BACKGROUND

• Moll FL, Powell JT, Fraedrich G, Verzini F, Haulon S, Waltham M, van Herwaarden JA, Holt PJ, van Keulen JW, Rantner B, Schlosser FJ, Setacci F, Ricco JB; European Society for Vascular Surgery. Management of abdominal aortic aneurysms clinical practice guidelines of the European society for vascular surgery. Eur J Vasc Endovasc Surg. 2011 Jan;41 Suppl 1:S1-S58. doi: 10.1016/j.ejvs.2010.09.011. No abstract available.

  PMID: 21215940 BACKGROUND

• Jens S, Marquering HA, Koelemay MJ, Reekers JA. Perfusion angiography of the foot in patients with critical limb ischemia: description of the technique. Cardiovasc Intervent Radiol. 2015 Feb;38(1):201-5. doi: 10.1007/s00270-014-1036-5. Epub 2014 Dec 13.

  PMID: 25501266 BACKGROUND

• Benndorf G. Color-coded digital subtraction angiography: the end of a monochromatic era? AJNR Am J Neuroradiol. 2010 May;31(5):925-7. doi: 10.3174/ajnr.A2077. Epub 2010 Apr 15. No abstract available.

  PMID: 20395396 BACKGROUND

• Mehndiratta A, Knopp MV, Zechmann CM, Owsijewitsch M, von Tengg-Kobligk H, Zamecnik P, Kauczor HU, Choyke PL, Giesel FL. Comparison of diagnostic quality and accuracy in color-coded versus gray-scale DCE-MR imaging display. Int J Comput Assist Radiol Surg. 2009 Sep;4(5):457-62. doi: 10.1007/s11548-009-0356-4. Epub 2009 Jun 4.

  PMID: 20033528 BACKGROUND

• Tenjin H, Asakura F, Nakahara Y, Matsumoto K, Matsuo T, Urano F, Ueda S. Evaluation of intraaneurysmal blood velocity by time-density curve analysis and digital subtraction angiography. AJNR Am J Neuroradiol. 1998 Aug;19(7):1303-7.

  PMID: 9726473 BACKGROUND

• Strother CM, Bender F, Deuerling-Zheng Y, Royalty K, Pulfer KA, Baumgart J, Zellerhoff M, Aagaard-Kienitz B, Niemann DB, Lindstrom ML. Parametric color coding of digital subtraction angiography. AJNR Am J Neuroradiol. 2010 May;31(5):919-24. doi: 10.3174/ajnr.A2020. Epub 2010 Feb 18.

  PMID: 20167651 BACKGROUND

• Khanafer KM, Bull JL, Upchurch GR Jr, Berguer R. Turbulence significantly increases pressure and fluid shear stress in an aortic aneurysm model under resting and exercise flow conditions. Ann Vasc Surg. 2007 Jan;21(1):67-74. doi: 10.1016/j.avsg.2006.10.009.

  PMID: 17349339 BACKGROUND

• Hunter GJ, Hunter JV, Brown NJ. Parametric imaging using digital subtraction angiography. Br J Radiol. 1986 Jan;59(697):7-11. doi: 10.1259/0007-1285-59-697-7.

  PMID: 3512003 BACKGROUND

• Veith FJ, Baum RA, Ohki T, Amor M, Adiseshiah M, Blankensteijn JD, Buth J, Chuter TA, Fairman RM, Gilling-Smith G, Harris PL, Hodgson KJ, Hopkinson BR, Ivancev K, Katzen BT, Lawrence-Brown M, Meier GH, Malina M, Makaroun MS, Parodi JC, Richter GM, Rubin GD, Stelter WJ, White GH, White RA, Wisselink W, Zarins CK. Nature and significance of endoleaks and endotension: summary of opinions expressed at an international conference. J Vasc Surg. 2002 May;35(5):1029-35. doi: 10.1067/mva.2002.123095.

  PMID: 12021724 BACKGROUND

• Hinnen JW, Koning OH, van Bockel JH, Hamming JF. Aneurysm sac pressure after EVAR: the role of endoleak. Eur J Vasc Endovasc Surg. 2007 Oct;34(4):432-41; discussion 442-3. doi: 10.1016/j.ejvs.2007.05.022. Epub 2007 Aug 1.

  PMID: 17669670 BACKGROUND

• Zhou M, Su Z, Shi Z, Fu W, Meng X, Wang Y, Guo B, Huang K. Application of color-coded quantitative digital subtraction angiography in predicting the outcomes of immediate type I and type III endoleaks. J Vasc Surg. 2017 Sep;66(3):760-767. doi: 10.1016/j.jvs.2016.11.048. Epub 2017 Feb 16.

  PMID: 28216350 DERIVED

MeSH Terms

Conditions

Endoleak; Aortic Aneurysm, Abdominal

Condition Hierarchy (Ancestors)

Aneurysm; Vascular Diseases; Cardiovascular Diseases; Postoperative Hemorrhage; Hemorrhage; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Postoperative Complications; Aortic Aneurysm; Aortic Diseases

Study Officials

• Weiguo Fu, MD

  Shanghai Zhongshan Hospital

  STUDY CHAIR

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate Prof.

Study Record Dates

• First Submitted: December 14, 2013
• First Posted: December 19, 2013
• Study Start: January 1, 2012
• Primary Completion: September 1, 2014
• Study Completion: March 1, 2015
• Last Updated: August 21, 2025

Record last verified: 2015-05

Locations

CN (1)