PMID- 34877044
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220429
IS  - 2229-5097 (Print)
IS  - 2152-7806 (Electronic)
IS  - 2152-7806 (Linking)
VI  - 12
DP  - 2021
TI  - Hyperintense posterior cerebral artery sign in patients with reversible cerebral 
      vasoconstriction syndrome.
PG  - 558
LID - 10.25259/SNI_1023_2021 [doi]
LID - 558
AB  - BACKGROUND: This study investigated hyperintense vessel signs (HVS) on 
      fluid-attenuated inversion recovery imaging in the P1-2 portions of posterior 
      cerebral arteries (PCAs) as a "hyperintense PCA sign" and HVS of cortical 
      arteries. We retrospectively examined whether these signs would be useful in 
      diagnosing reversible cerebral vasoconstriction syndrome (RCVS) in the acute 
      phase. METHODS: Eighty patients with RCVS who underwent initial magnetic 
      resonance imaging (MRI) within 7 days of onset were included in this study. HVS 
      and related clinical factors were examined. RESULTS: On initial MRI of RCVS 
      patients, hyperintense PCA sign and HVS of cortical arteries were seen in 21 
      cases (26%) and 38 cases (48%), respectively. In patients showing hyperintense 
      PCA sign, vasoconstriction of the A2-3 portion was a significant clinical factor. 
      Conversely, vasoconstriction of the M1 and P1 portions and the presence of white 
      matter hyperintensity on initial and chronic-stage MRI were significantly 
      associated with the presence of HVS in cortical arteries. CONCLUSION: Because 
      rich collateral flow exists around PCAs, the frequency of hyperintense PCA sign 
      is not high. However, hyperintense PCA sign findings in patients with suspected 
      RCVS offer credible evidence of extreme flow decreases due to vasoconstriction in 
      peripheral PCAs and other arteries associated with the collateral circulation of 
      PCAs. Conversely, HVS in cortical arteries tend to reflect slow antegrade 
      circulation due to vasoconstriction of peripheral vessel and major trunks. Both 
      signs appear useful for auxiliary diagnosis of acute-phase RCVS.
CI  - Copyright: (c) 2021 Surgical Neurology International.
FAU - Imai, Masaaki
AU  - Imai M
AD  - Department of Neurosurgery, Tokai University Hachioji Hospital, Ishikawa Machi, 
      Hachioji, Tokyo, Japan.
FAU - Shimoda, Masami
AU  - Shimoda M
AD  - Department of Neurosurgery, Tokai University Hachioji Hospital, Ishikawa Machi, 
      Hachioji, Tokyo, Japan.
FAU - Oda, Shinri
AU  - Oda S
AD  - Department of Neurosurgery, Tokai University Hachioji Hospital, Ishikawa Machi, 
      Hachioji, Tokyo, Japan.
FAU - Hoshikawa, Kaori
AU  - Hoshikawa K
AD  - Department of Neurosurgery, Tokai University Hachioji Hospital, Ishikawa Machi, 
      Hachioji, Tokyo, Japan.
FAU - Osada, Takahiro
AU  - Osada T
AD  - Department of Neurosurgery, Tokai University Hachioji Hospital, Ishikawa Machi, 
      Hachioji, Tokyo, Japan.
FAU - Aoki, Rie
AU  - Aoki R
AD  - Department of Neurosurgery, Tokai University Hachioji Hospital, Ishikawa Machi, 
      Hachioji, Tokyo, Japan.
FAU - Sunaga, Azusa
AU  - Sunaga A
AD  - Department of Neurosurgery, Tokai University Hachioji Hospital, Ishikawa Machi, 
      Hachioji, Tokyo, Japan.
LA  - eng
PT  - Journal Article
DEP - 20211116
PL  - United States
TA  - Surg Neurol Int
JT  - Surgical neurology international
JID - 101535836
PMC - PMC8645486
OTO - NOTNLM
OT  - Fluid-attenuated inversion recovery
OT  - Hyperintense vessel sign
OT  - Posterior cerebral artery
OT  - Reversible cerebral vasoconstriction syndrome
COIS- There are no conflicts of interest.
EDAT- 2021/12/09 06:00
MHDA- 2021/12/09 06:01
PMCR- 2021/11/16
CRDT- 2021/12/08 06:30
PHST- 2021/10/08 00:00 [received]
PHST- 2021/11/03 00:00 [accepted]
PHST- 2021/12/08 06:30 [entrez]
PHST- 2021/12/09 06:00 [pubmed]
PHST- 2021/12/09 06:01 [medline]
PHST- 2021/11/16 00:00 [pmc-release]
AID - 10.25259/SNI_1023_2021 [pii]
AID - 10.25259/SNI_1023_2021 [doi]
PST - epublish
SO  - Surg Neurol Int. 2021 Nov 16;12:558. doi: 10.25259/SNI_1023_2021. eCollection 
      2021.