論文

査読有り 国際誌
2020年12月21日

Utility of Noncontrast Magnetic Resonance Angiography for Aneurysm Follow-Up and Detection of Endoleaks after Endovascular Aortic Repair.

Korean journal of radiology
  • Hiroshi Kawada
  • Satoshi Goshima
  • Kota Sakurai
  • Yoshifumi Noda
  • Kimihiro Kajita
  • Yukichi Tanahashi
  • Nobuyuki Kawai
  • Narihiro Ishida
  • Katsuya Shimabukuro
  • Kiyoshi Doi
  • Masayuki Matsuo
  • 全て表示

22
4
開始ページ
513
終了ページ
524
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3348/kjr.2020.0001

OBJECTIVE: To assess the noncontrast two-dimensional single-shot balanced turbo-field-echo magnetic resonance angiography (b-TFE MRA) features of the abdominal aortic aneurysm (AAA) status following endovascular aneurysm repair (EVAR) and evaluate to detect endoleaks (ELs). MATERIALS AND METHODS: We examined four aortic stent-grafts in a phantom study to assess the degree of metallic artifacts. We enrolled 46 EVAR-treated patients with AAA and/or common iliac artery aneurysm who underwent both computed tomography angiography (CTA) and b-TFE MRA after EVAR. Vascular measurements on CTA and b-TFE MRA were compared, and signal intensity ratios (SIRs) of the aneurysmal sac were correlated with the size changes in the AAA after EVAR (AAA prognoses). Furthermore, we examined six feasible b-TFE MRA features for the assessment of ELs. RESULTS: There were robust intermodality (r = 0.92-0.99) correlations and interobserver (intraclass correlation coefficient = 0.97-0.99) agreement. No significant differences were noted between SIRs and aneurysm prognoses. Moreover, "mottled high-intensity" and "creeping high-intensity with the low-band rim" were recognized as significant imaging findings suspicious for the presence of ELs (p < 0.001), whereas "no signal black spot" and "layered high-intensity area" were determined as significant for the absence of ELs (p < 0.03). Based on the two positive features, sensitivity, specificity, and accuracy for the detection of ELs were 77.3%, 91.7%, and 84.8%, respectively. Furthermore, the k values (0.40-0.88) displayed moderate-to-almost perfect agreement. CONCLUSION: Noncontrast MRA could be a promising imaging modality for ascertaining patient follow-up after EVAR.

リンク情報
DOI
https://doi.org/10.3348/kjr.2020.0001
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/33543842
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8005350
ID情報
  • DOI : 10.3348/kjr.2020.0001
  • PubMed ID : 33543842
  • PubMed Central 記事ID : PMC8005350

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