Evaluation of microvessel density and vascular endothelial growth factor in colorectal carcinoma with 64-multidetector-row CT perfusion imaging.
- Author:
Shi-ting FENG
1
;
Can-hui SUN
;
Zi-ping LI
;
Huan-yi GUO
;
Zhen-peng PENG
;
Jian-wen HUANG
;
Quan-fei MENG
;
Ke-guo ZHENG
;
Da-sheng XU
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Aged; Colorectal Neoplasms; blood supply; diagnostic imaging; Female; Humans; Male; Microvessels; Middle Aged; Neovascularization, Pathologic; Tomography, Spiral Computed; methods; Vascular Endothelial Growth Factor A; metabolism; Young Adult
- From: Chinese Journal of Gastrointestinal Surgery 2008;11(6):537-541
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the correlation of 64-multidetector-row CT (64MDCT) perfusion imaging with microvessel density(MVD) and vascular endothelial growth factor(VEGF) in colorectal carcinoma.
METHODS64MDCT perfusion imaging was performed in 33 patients with pathologically verified colorectal carcinoma. Time-density curves (TDC) were created from the region of interest (ROI) drawn over the tumor, target artery and vein by 64MDCT with perfusion functional software. The individual perfusion maps generated were for blood flow (BF), blood volume (BV), mean transit time (MTT) and permeability-surface area product (PS). MVD and VEGF expression of surgical specimens were examined by immunohistochemical staining with anti-CD34, anti-VEGF monoclonal antibody. MVD and VEGF were compared among the different types of TDC in colorectal carcinoma. The correlation of CT perfusion parameters with MVD and VEGF was also examined.
RESULTSTDC of colorectal carcinoma was divided into five types according to their shapes. MVD in the colorectal carcinoma was 22.61+/-9.01. VEGF staining was found in 25 of 29 tumors (86.2%). The score of VEGF expression was 4.15+/-1.09. No significant differences of MVD and VEGF expression among TDC types were found (F=2.59, 1.11, P>0.05). There were also no correlations of MVD and VEGF expression with any dynamic CT parameters (P>0.05).
CONCLUSION64MDCT perfusion imaging, MVD and VEGF may reflect angiogenic activity, but no significant correlations are found among them.
