Evidence map›Paper›PMID 41669488›Full record

ArticleQuantitative imaging in medicine and surgery2026

Stability of Codman Hakim programmable valve pressure settings during 0.23 T portable magnetic resonance imaging: a prospective observational study.

Long Zeng, Minghan Xie, Hongwei Zhu, Houminji Chen, Mohammed Mofatteh, Qingshan Xiao, Zelin Wu, Shizhong Zhang, Tao Xie, Yuting Xu and 1 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Quantitative imaging in medicine and surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Long Zeng *Neurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Minghan Xie *Neurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Hongwei Zhu *Neurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Houminji ChenNeurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Mohammed MofattehSchool of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK.
Qingshan XiaoNeurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Zelin WuNeurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Shizhong ZhangNeurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Tao XieNeurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Yuting XuNeurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Yanwu GuoNeurosurgery Center, Department of Functional Neurosurgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Patients with hydrocephalus require multiple cranial imaging sessions for visualization of the ventricles following the implantation of a ventriculoperitoneal shunt (VPS) valve. However, conventional imaging methods have certain limitations: high-field-strength magnetic resonance imaging (MRI) equipment can interfere with the pressure setting of a Codman Hakim programmable valve, while mobile computed tomography (CT) exposes patients and medical staff to radiation. Low-field-strength portable MRI (pMRI) offers a safer and more convenient method for the monitoring of patients with hydrocephalus after VPS surgery. This study aimed to evaluate the stability of valve pressure setting during 0.23 T pMRI and to assess the image quality in patients with hydrocephalus. Methods: This prospective observational study involved 20 patients with hydrocephalus admitted to Zhujiang Hospital of Southern Medical University between September 2022 and September 2023. Eligible patients had hydrocephalus confirmed by recent routine imaging (1.5 T/3 T MRI or CT) and had undergone implantation of a non-MR-resistant Codman Hakim programmable valve. Participants were then subjected to pMRI (0.23 T), before and after which the valve pressure settings were verified via X-ray. Pressure stability was analyzed with the Wilcoxon signed-rank test. Image quality was evaluated through comparison of the Evans index (EI) measured on pMRI with that on standard CT (performed within 24 hours) via intraclass correlation coefficients (ICCs) and Bland-Altman analysis. Results: In the Conclusions: The results indicate that 0.23T pMRI has minimal impact on the pressure setting of the Codman Hakim programmable valve. This study's findings support the safety and convenience of pMRI for VPS follow-up.

Indexed as

Codman Hakim programmable valvehydrocephalusLow-field strengthmagnetic resonance imaging (MRI)

Identifiers

PMID41669488
PMCPMC12883479

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.