Y Yan, D She, J Hong, D Jiang, H Huang, Y Wang, W Huang, X Zhao, H Jiang, D Cao
{"title":"胸背根节：与平衡快场回声（B_FFE）相比，T2快场回声（T2 FFE）显示正常解剖和病理结果，神经鞘信号增加与休息组织快速获取松弛增强成像（SHINKEI）。","authors":"Y Yan, D She, J Hong, D Jiang, H Huang, Y Wang, W Huang, X Zhao, H Jiang, D Cao","doi":"10.1016/j.crad.2025.107020","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>To evaluate the clinical feasibility of magnetic resonance neurography (MRN) in detecting thoracic dorsal root ganglia (DRG).</p><p><strong>Materials and methods: </strong>Fifty-three healthy volunteers (23 males and 30 females; mean age, age range, 20-70 years) and eleven zoster-associated pain (ZAP) patients (6 males and 5 females; age range, 56-86 years) were enrolled for MRN scan. Balanced fast field echo (B_FFE), T2 fast field echo (T2 FFE), and signal increased with inked rest-tissue rapid acquisition of relaxation enhancement imaging (SHINKEI) sequences were compared for thoracic DRG imaging. The visualisation effect for the thoracic nerve root and overall image quality were scored on a 5-point Likert scale. The agreement was assessed by intraclass correlation coefficient (ICC) analysis. The contrast ratio, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) between DRG and perineural tissues were quantitatively evaluated in three sequences. Morphological changes of DRG on MRN images were evaluated in 11 patients.</p><p><strong>Results: </strong>All nerve visualisation scores of three sequences showed moderate to good agreement (ICC values > 0.75). T2 FFE images demonstrated the best visualisation scores of the thoracic spinal nerve among three sequences (all P < 0.001). The mean contrast ratio and SNR of DRG on T2 FFE images were higher than B_FFE and SHINKEI in both healthy volunteers and ZAP patients, respectively (most P < 0.001). B_FFE images showed highest CNR of DRG (all P < 0.001). Of the 11 patients, abnormalities of affected DRG were detected in 8 patients by T2 FFE sequence (72.7%), which was higher than B_FFE (4/11, 36.4%) and SHINKEI (5/11, 45.5%).</p><p><strong>Conclusion: </strong>Compared with B_FFE and SHINKEI, the T2 FFE sequence feasibly depicts the normal morphology and abnormalities of thoracic DRG.</p>","PeriodicalId":10695,"journal":{"name":"Clinical radiology","volume":"89 ","pages":"107020"},"PeriodicalIF":1.9000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thoracic dorsal root ganglia: visualisation of normal anatomy and pathological findings by T2 fast field echo (T2 FFE) compared with balanced fast field echo (B_FFE) and nerve-sheath signal increased with inked rest-tissue rapid acquisition of relaxation enhancement imaging (SHINKEI).\",\"authors\":\"Y Yan, D She, J Hong, D Jiang, H Huang, Y Wang, W Huang, X Zhao, H Jiang, D Cao\",\"doi\":\"10.1016/j.crad.2025.107020\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Aim: </strong>To evaluate the clinical feasibility of magnetic resonance neurography (MRN) in detecting thoracic dorsal root ganglia (DRG).</p><p><strong>Materials and methods: </strong>Fifty-three healthy volunteers (23 males and 30 females; mean age, age range, 20-70 years) and eleven zoster-associated pain (ZAP) patients (6 males and 5 females; age range, 56-86 years) were enrolled for MRN scan. Balanced fast field echo (B_FFE), T2 fast field echo (T2 FFE), and signal increased with inked rest-tissue rapid acquisition of relaxation enhancement imaging (SHINKEI) sequences were compared for thoracic DRG imaging. The visualisation effect for the thoracic nerve root and overall image quality were scored on a 5-point Likert scale. The agreement was assessed by intraclass correlation coefficient (ICC) analysis. The contrast ratio, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) between DRG and perineural tissues were quantitatively evaluated in three sequences. Morphological changes of DRG on MRN images were evaluated in 11 patients.</p><p><strong>Results: </strong>All nerve visualisation scores of three sequences showed moderate to good agreement (ICC values > 0.75). T2 FFE images demonstrated the best visualisation scores of the thoracic spinal nerve among three sequences (all P < 0.001). The mean contrast ratio and SNR of DRG on T2 FFE images were higher than B_FFE and SHINKEI in both healthy volunteers and ZAP patients, respectively (most P < 0.001). B_FFE images showed highest CNR of DRG (all P < 0.001). Of the 11 patients, abnormalities of affected DRG were detected in 8 patients by T2 FFE sequence (72.7%), which was higher than B_FFE (4/11, 36.4%) and SHINKEI (5/11, 45.5%).</p><p><strong>Conclusion: </strong>Compared with B_FFE and SHINKEI, the T2 FFE sequence feasibly depicts the normal morphology and abnormalities of thoracic DRG.</p>\",\"PeriodicalId\":10695,\"journal\":{\"name\":\"Clinical radiology\",\"volume\":\"89 \",\"pages\":\"107020\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2025-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Clinical radiology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1016/j.crad.2025.107020\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/7/15 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Clinical radiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.crad.2025.107020","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/7/15 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING","Score":null,"Total":0}
Thoracic dorsal root ganglia: visualisation of normal anatomy and pathological findings by T2 fast field echo (T2 FFE) compared with balanced fast field echo (B_FFE) and nerve-sheath signal increased with inked rest-tissue rapid acquisition of relaxation enhancement imaging (SHINKEI).
Aim: To evaluate the clinical feasibility of magnetic resonance neurography (MRN) in detecting thoracic dorsal root ganglia (DRG).
Materials and methods: Fifty-three healthy volunteers (23 males and 30 females; mean age, age range, 20-70 years) and eleven zoster-associated pain (ZAP) patients (6 males and 5 females; age range, 56-86 years) were enrolled for MRN scan. Balanced fast field echo (B_FFE), T2 fast field echo (T2 FFE), and signal increased with inked rest-tissue rapid acquisition of relaxation enhancement imaging (SHINKEI) sequences were compared for thoracic DRG imaging. The visualisation effect for the thoracic nerve root and overall image quality were scored on a 5-point Likert scale. The agreement was assessed by intraclass correlation coefficient (ICC) analysis. The contrast ratio, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) between DRG and perineural tissues were quantitatively evaluated in three sequences. Morphological changes of DRG on MRN images were evaluated in 11 patients.
Results: All nerve visualisation scores of three sequences showed moderate to good agreement (ICC values > 0.75). T2 FFE images demonstrated the best visualisation scores of the thoracic spinal nerve among three sequences (all P < 0.001). The mean contrast ratio and SNR of DRG on T2 FFE images were higher than B_FFE and SHINKEI in both healthy volunteers and ZAP patients, respectively (most P < 0.001). B_FFE images showed highest CNR of DRG (all P < 0.001). Of the 11 patients, abnormalities of affected DRG were detected in 8 patients by T2 FFE sequence (72.7%), which was higher than B_FFE (4/11, 36.4%) and SHINKEI (5/11, 45.5%).
Conclusion: Compared with B_FFE and SHINKEI, the T2 FFE sequence feasibly depicts the normal morphology and abnormalities of thoracic DRG.
期刊介绍：
Clinical Radiology is published by Elsevier on behalf of The Royal College of Radiologists. Clinical Radiology is an International Journal bringing you original research, editorials and review articles on all aspects of diagnostic imaging, including:
• Computed tomography
• Magnetic resonance imaging
• Ultrasonography
• Digital radiology
• Interventional radiology
• Radiography
• Nuclear medicine
Papers on radiological protection, quality assurance, audit in radiology and matters relating to radiological training and education are also included. In addition, each issue contains correspondence, book reviews and notices of forthcoming events.
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