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Evaluation of tumour vascular distribution and function using immunohistochemistry and BOLD fMRI with carbogen inhalation.
Xu, J; Chen, A; Xiao, J; Jiang, Z; Tian, Y; Tang, Q; Cao, P; Dai, Y; Krainik, A; Shen, J.
Afiliación
  • Xu J; Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
  • Chen A; Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
  • Xiao J; Department of Radiology, The Central Hospital of Wuhan, Wuhan, China.
  • Jiang Z; Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China. Electronic address: j102@163.com.
  • Tian Y; Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China; Suzhou Key Laboratory for Radiation Oncology, Suzhou, China.
  • Tang Q; Department of Radiology, Wuxi People's Hospital, Wuxi, China.
  • Cao P; Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
  • Dai Y; Magnetic Resonance Imaging Institute for Biomedical Research, Wayne State University, Detroit, MI, USA.
  • Krainik A; Department of Neuroradiology and MRI, CHU Grenoble-IFR1, Grenoble, France.
  • Shen J; Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
Clin Radiol ; 71(12): 1255-1262, 2016 Dec.
Article en En | MEDLINE | ID: mdl-27170218
AIM: To evaluate oxygenation changes in rat subcutaneous C6 gliomas using blood-oxygen-level dependent (BOLD) functional magnetic resonance imaging (fMRI) combined with non-haemodynamic response function (non-HRF) analysis. MATERIALS AND METHODS: BOLD fMRI were performed during carbogen inhalation in 20 Wistar rats bearing gliomas. Statistical maps of spatial oxygenation changes were computed by a dedicated non-HRF analysis algorithm. Three types of regions of interest (ROIs) were defined: (1) maximum re-oxygenation zone (ROImax), (2) re-oxygenation zones that were less than the maximum re-oxygenation (ROInon-max), and (3) zones without significant re-oxygenation (ROInone). The values of percent BOLD signal change (PSC), percent enhancement (ΔSI), and significant re-oxygenation (T) were extracted from each ROI. Tumours were sectioned for histology using the fMRI scan orientation and were stained with haematoxylin and eosin and CD105. The number of microvessels (MVN) in each ROI was counted. Differences and correlations among the values for T, PSC, ΔSI, and MVN were determined. RESULTS: After carbogen inhalation, the PSC significantly increased in the ROImax areas (p<0.01) located in the tumour parenchyma. No changes occurred in any of the ROInone areas (20/20). Some changes occurred in a minority of the ROInon-max areas (3/60) corresponding to tumour necrosis. MVN and PSC (R=0.59, p=0.01) were significantly correlated in the ROImax areas. In the ROInon-max areas, MVN was significantly correlated with PSC (R=0.55, p=0.00) and ΔSI (R=0.37, p=0.00). CONCLUSIONS: Statistical maps obtained via BOLD fMRI with non-HRF analysis can assess the re-oxygenation of gliomas.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Fármacos Sensibilizantes a Radiaciones / Neoplasias Encefálicas / Dióxido de Carbono / Imagen por Resonancia Magnética / Glioma / Hipoxia Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: Clin Radiol Año: 2016 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Fármacos Sensibilizantes a Radiaciones / Neoplasias Encefálicas / Dióxido de Carbono / Imagen por Resonancia Magnética / Glioma / Hipoxia Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: Clin Radiol Año: 2016 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido