Evidence map›Paper›PMID 33956177›Full record

ArticleEuropean radiology2021

Encephaloduroarteriosynangiosis (EDAS) treatment of moyamoya syndrome: evaluation by computed tomography perfusion imaging.

Xiang Guo, Xuexia Yuan, Lingyun Gao, Yueqin Chen, Hao Yu, Weijian Chen, Yunjun Yang, Zhen Chong, Zhanguo Sun, Feng Jin and 1 more

Abstract read
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In one paragraph

Article in European radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
3.4field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 28 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 1 country.

Xiang GuoDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China.
Xuexia YuanDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China.
Lingyun GaoDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China.
Yueqin ChenDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China.
Hao YuDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China.
Weijian ChenDepartment of Medical Imaging, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
Yunjun YangDepartment of Medical Imaging, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
Zhen ChongDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China.
Zhanguo SunDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China.
Feng JinDepartment of Neurosurgery, The Affiliated Hospital of Jining Medical University, Jining, China.
Deguo LiuDepartment of Radiology, The Affiliated Hospital of Jining Medical University, Jining, China. sdjnliudeguo@163.com.ORCID http://orcid.org/0000-0001-6677-1500
Affiliated Hospital of Jining Medical University · CNWenzhou Medical University · CN

Funding

Jining Key Research and Development Program No. 2017SMNS012Shandong Provincial Development Program of Medical Science and Technology No. 2016WS0185
6 · The paper itself

Abstract

objectiveTo explore the value of computed tomography perfusion (CTP) imaging for evaluating the efficacy of encephaloduroarteriosynangiosis (EDAS) treatment of moyamoya syndrome (MMS).

methodsForty-three patients with MMS (48 hemispheres) who received EDAS treatment were examined using CTP and DSA before and after surgery. CTP of the ipsilateral cortex, contralateral mirror area, and pons region were measured, and the relative cerebral blood flow (rCBF) and volume (rCBV), mean transit time (rMTT), and time-to-peak (rTTP) were calculated. Based on postoperative DSA, 48 hemispheres were apportioned to two groups based on rich (grades 2, 3) or poor (grades 0, 1) collateral vessel formation, and the pre- and post-operative differences in perfusion changes were compared. The association between clinical outcome, CTP, and the degree of DSA collateral vessels was explored.

resultsrCBF and rMTT significantly improved in both the poor and rich collateral vessel formation groups (n = 21 and 27, respectively), while rTTP significantly improved only in the latter. Postoperative CTP improved in the rich and the grade 1 collateral vessel groups (p < 0.01). The clinical improvement was consistent with the improvement of CTP (p = 0.07), but less consistent with the degree of collateral angiogenesis (p = 0.003).

conclusionCTP can quantitatively evaluate the improvement of brain tissue perfusion in the operated area after EDAS. Brain tissue perfusion in operated areas improved regardless of postoperative rich or poor collateral vessel formation observed via DSA. A significant improvement in rTTP in the operated area may indicate the formation of abundant collateral vessels. KEY POINTS: • CTP showed that brain tissue perfusion in the operated area after EDAS improved regardless of rich or poor collateral vessel formation observed via DSA. • Significant improvement of rTTP in the operated area may indicate the formation of abundant collateral vessels.

Indexed as

Cerebral RevascularizationMoyamoya DiseaseCerebrovascular CirculationHumansPerfusion ImagingTomography, X-Ray ComputedAngiographyCerebral revascularizationMoyamoya syndromePerfusion imaging

Identifiers

PMID33956177
OpenAlexW3158662379

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.