Objective To explore the clinical application of blood perfusion quantitatively by contrastenhanced ultrasonography(CEUS) to grade cerebral gliomas during operation. Methods Thirty-one patients with cerebral gliomas were examined by CEUS with Sonoliver software during operation. Maximum intensity (IMAX), time to peak (TTP), rising time (RT) and mean transit time(mTT) of the regions of interest (ROIs) of normal brain tissue and high- and low-grade gliomas were respectively determined and comparatively analyzed. Results Fifteen high-grade gliomas and sixteen low-grade gliomas were postoperatively confirmed by pathologic results. The administration of contrast agent led to higher echo enhancement in cerebral gliomas than normal brain tissues in all cases. The TTP of high- and low-grade gliomas were significantly shorter than that of normal cerebral tissues ( P ＜0.05) ,and the mTT was longer than that of normal brain tissue( P ＜0. 05). There was significant differences of IMAX and TTP between high- and low-grade gliomas(P ＜0.05), but there was no significant difference of RT and mTT between the two groups ( P ＞0.05). Conclusions CEUS with quantitative analysis software on blood perfusion of the tumors can provide valuable information to grade cerebral gliomas.

The potential embryotoxicity, developmental toxicity and teratogenic effects of (3 or 8)-(l-methoxyethyl)-8 (or3)-hydroxyethyl-deuteroporphyrin (PsD-044) were investigated in Sprague-Dawley rats with the conventional teratological method in vivo. According to the recommending clinical dosage, PsD-044 was administered intravenously at 20, 10 and 5mg/kg, as compared to the negative control with saline and the positive control with sodium pentachlorophenolate, respectively on the 10th day of the gestation. Eighty-one pregnant rats and 803 fetuses were examined. The results suggest that the maternal toxicity, embryotoxicity and teratogenic effects of PsD-044 were not found, however, the malformation induced by known teratogen was as high as 14.1%.