Evidence map›Paper›PMID 40120059›Full record

ArticleInsights into imaging2025

Insulinoma detection on low-dose pancreatic CT perfusion: comparing with conventional contrast-enhanced CT and MRI.

Shiwei Luo, Xilong Mei, Youlan Shang, Jiaqi Yao, Nuerbiya Keranmu, Shaqi He, Cheng Yu, Fei Tang, Cong Li, Wenhan Yang and 1 more

Abstract read
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Article in Insights into imaging, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Shiwei Luo *Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Xilong Mei *Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Youlan ShangDepartment of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Jiaqi YaoImaging Center, The Second Affiliated Hospital of Xinjiang Medical University, Urumuqi, China.
Nuerbiya KeranmuImaging Center, The Second Affiliated Hospital of Xinjiang Medical University, Urumuqi, China.
Shaqi HeDepartment of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Cheng YuDepartment of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Fei TangDepartment of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Cong LiDepartment of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Wenhan YangDepartment of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Jun LiuDepartment of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China. junliu123@csu.edu.cn.ORCID http://orcid.org/0000-0002-7851-6782

Funding

Clinical Research Center for Medical Imaging in Hunan Province 2020SK4001Fundamental Research Funds for the Central Universities of Central South University 2024ZZTS0880Graduate Innovation Project of Central South University 2023XQLH143Science and Technology Innovation Program of Hunan Province 2021RC4016Scientific research program of Hunan Provincial Health Commission 202209044797
6 · The paper itself

Abstract

objectivesTo evaluate the efficacy of low-dose pancreatic CT perfusion (pCTP) in detecting insulinomas in patients with recurrent hypoglycemia, and to compare its diagnostic performance with conventional contrast-enhanced CT (CECT) and MRI.

methodsThis study retrospectively collected 53 patients with recurrent hypoglycemia (28 with insulinomas; 25 without insulinomas). PCTP image analysis was conducted by two radiologists. Quantitative perfusion parameters of insulinomas vs. tumor-free pancreatic parenchyma were analyzed. For cases where both pCTP and CECT/MRI were performed, six radiologists blinded to the patients' diagnosis independently evaluated the pCTP and CECT/MRI to determine the presence and location of insulinoma. The diagnostic performance of insulinoma detection between pCTP and CECT/MRI was compared.

resultsFor patients who underwent both CECT and pCTP, the sensitivity (CECT 0.167-0.333 vs. pCTP 0.667-1.000) of tumor detection was higher for five of six radiologists on pCTP than on CECT. For patients who underwent both MRI and pCTP, four radiologists showed higher sensitivity (MRI 0.400-600 vs. pCTP 0.700-0.800) of tumor detection on pCTP than on MRI, while two radiologists showed slightly lower sensitivity (MRI 0.800, 1.000 vs. pCTP 0.700, 0.900) on pCTP. Among perfusion parameters, peak enhancement, blood flow, and mean transit time exhibited higher AUC than blood volume and time to peak.

conclusionPCTP demonstrated superior diagnostic performance in insulinoma detection among less-experienced radiologists compared to CECT and MRI, while more-experienced radiologists achieved marginally better results with MRI. These findings suggest pCTP's potential as a complementary imaging modality, particularly beneficial for junior radiologists in insulinoma detection. CRITICAL RELEVANCE STATEMENT: Pancreatic CT perfusion exhibited promising diagnostic performance in insulinoma detection, particularly among junior radiologists, demonstrating the potential to complement conventional imaging modalities and serve as a valuable clinical tool for the detection and localization of insulinoma. KEY POINTS: Accurate preoperative identification and localization of insulinomas is important for appropriate treatment. Peak enhancement, blood flow, and mean transit time outperformed blood volume and time to peak in insulinoma detection. Pancreatic CT perfusion has the potential to complement conventional imaging modalities for insulinoma detection.

Indexed as

Diagnostic imagingInsulinomasMagnetic resonance imagingPerfusion imagingTomography (X-ray computed)

Identifiers

PMID40120059
PMCPMC11929649

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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.