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Diagnostic Performance of Pointwise Encoding Time Reduction with Radial Acquisition Subtraction-based MR Angiography in the Follow-up of Intracranial Aneurysms after Clipping

Authors
 Inyoung Kim  ;  Sung Jun Ahn  ;  Mina Park  ;  Bio Joo  ;  Junhyung Kim  ;  Sang Hyun Suh 
Citation
 CLINICAL NEURORADIOLOGY, Vol.34(3) : 597-603, 2024-09 
Journal Title
CLINICAL NEURORADIOLOGY
ISSN
 1869-1439 
Issue Date
2024-09
MeSH
Aged ; Angiography, Digital Subtraction* / methods ; Artifacts ; Cerebral Angiography / methods ; Female ; Humans ; Intracranial Aneurysm* / diagnostic imaging ; Intracranial Aneurysm* / surgery ; Magnetic Resonance Angiography* / methods ; Male ; Middle Aged ; Retrospective Studies ; Surgical Instruments
Keywords
Aneurysm ; Clipping ; Follow-up ; PETRA-MRA
Abstract
Purpose: While follow-up assessment of clipped aneurysms (CAs) using magnetic resonance angiography (MRA) can be challenging due to susceptibility artifacts, a novel MRA sequence pointwise encoding time reduction with radial acquisition (PETRA) subtraction-based MRA, has been developed to reduce these artifacts. The aim of the study was to validate the diagnostic performance of PETRA-MRA by comparing it with digital subtraction angiography (DSA) as a reference for follow-up of CAs using a 3T MR scanner.

Methods: Patients with clipping who underwent both PETRA-MRA and DSA between September 2019 and December 2021 were retrospectively included. Two neuroradiologists independently reviewed with the reconstructed images of PETRA-MRA to assess the visibility of the arteries around the clips and aneurysm recurrence or remnants of CA using a 3-point scale. The diagnostic accuracy of PETRA-MRA was evaluated in comparison to DSA.

Results: The study included 34 patients (28 females, mean age 59 ± 9.6 years) with 48 CAs. The PETRA-MRA allowed visualization of the parent vessels around the clips in 98% of cases, compared to 39% with time-of-flight (TOF) MRA (p < 0.0001). The DSA confirmed 14 (29.2%) residual or recurrent aneurysms. The PETRA-MRA demonstrated a high accuracy, specificity, positive predictive value, and negative predictive value of 99.2%, 100%, 100%, and 97.8%, respectively, while the sensitivity was 66.7%.

Conclusion: This retrospective study demonstrates that PETRA-MRA provides excellent visibility of adjacent vessels near clips and has a high diagnostic accuracy in detecting aneurysm remnants or recurrences in CAs. Further prospective studies are warranted to establish its utility as a reliable alternative for follow-up after clipping.
Full Text
https://link.springer.com/article/10.1007/s00062-024-01399-y
DOI
38456913
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Junhyung(김준형) ORCID logo https://orcid.org/0000-0002-8908-978X
Park, Mina(박미나) ORCID logo https://orcid.org/0000-0002-2005-7560
Suh, Sang Hyun(서상현) ORCID logo https://orcid.org/0000-0002-7098-4901
Ahn, Sung Jun(안성준) ORCID logo https://orcid.org/0000-0003-0075-2432
Joo, Bio(주비오) ORCID logo https://orcid.org/0000-0001-7460-1421
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/200462
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