Document Detail


Non-contrast MR imaging for detecting endoleak after abdominal endovascular aortic repair.
MedLine Citation:
PMID:  22588711     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Our aim was to investigate the possibility of ruling out endoleak after endovascular aortic repair (EVAR) of abdominal aortic aneurysm (AAA) using non-contrast MRI. Twenty-three patients (20 males, aged 73 ± 8 years) with an EVAR-treated AAA underwent 1.5-T MRI using axial, coronal and sagittal oblique true-FISP sequences. Two blinded and independent readers with 4 (R1) and 2 (R2) years of experience evaluated these images considering an area of even less than 5 mm in diameter with a signal intensity higher than that of normal muscles visible in the excluded aneurysmal sac as a sign of potential endoleak. The final assessment, mainly based on MR angiography and previous examinations, served as reference standard. Out of 23 patients, 13 (57 %) were negative for endoleak at final assessment, while the remaining 10 (43 %) were positive, with the following type distribution: Ia (n = 4), Ib (n = 2), II (n = 3), and III (n = 1). Sensitivity was 10/10 (100 %; CI 95 % 69-100 %), specificity 7/13 (54 %; 25-81 %), accuracy 17/23 (74 %; 52-90 %), PPV 10/16 (63 %; 35-85 %) and NPV 7/7 (100 %; 59-100 %) for R1; 9/10 (90 %; 56-100 %), 8/13 (62 %; 32-86 %), 17/23 (74 %; 52-90 %), 9/14 (64 %; 35-87 %), and 8/9 (89 %; 52-100 %) for R2, respectively. Inter-reader Cohen κ was 0.810. A negative non-contrast true-FISP MR study can be used to rule out endoleak after EVAR of AAA. This hypothesis may contribute to the reduction of ionizing radiation exposure and contrast material administration for monitoring patients with an EVAR-treated AAA.
Authors:
Elda C Resta; Francesco Secchi; Antonello Giardino; Veronica G Nardella; Giovanni Di Leo; Nicola Flor; Francesco Sardanelli
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-16
Journal Detail:
Title:  The international journal of cardiovascular imaging     Volume:  -     ISSN:  1875-8312     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100969716     Medline TA:  Int J Cardiovasc Imaging     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Scuola di Specializzazione in Radiodiagnostica, Università degli Studi di Milano, Via Festa del Perdono 7, 20122, Milan, Italy.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Validation of the Head and Neck Patient Symptom Checklist as a nutrition impact symptom assessment t...
Next Document:  Novel computed tomography indexes of left atrial appendage stasis.