RATIONALE AND OBJECTIVES: To determine the capacity of color and spectral Doppler ultrasonography (US) to quantify angiogenesis in vivo and to characterize low-resistance intratumor blood flow. METHODS: Thirty-two tumors, xenografted into mice, were studied with Doppler US. The number of intratumor vessels visualized with color Doppler US was compared with the density of microvessels and the number of vessels >100 microm determined by histologic examination. The resistance index and the peak systolic velocities were evaluated. RESULTS: The number of intratumor vessels visualized by color Doppler US was correlated with the number of vessels >100 microm (P<0.001) determined histologically. When vessel density was >30, intratumor vessels were always detected by color Dopper US. The resistance index and peak systolic velocities were significantly lower in intratumor than in peritumor vessels. CONCLUSIONS: Color Doppler US evaluated tumor angiogenesis accurately. Spectral analysis confirmed the low resistance of intratumor blood flow.
RATIONALE AND OBJECTIVES: To determine the capacity of color and spectral Doppler ultrasonography (US) to quantify angiogenesis in vivo and to characterize low-resistance intratumor blood flow. METHODS: Thirty-two tumors, xenografted into mice, were studied with Doppler US. The number of intratumor vessels visualized with color Doppler US was compared with the density of microvessels and the number of vessels >100 microm determined by histologic examination. The resistance index and the peak systolic velocities were evaluated. RESULTS: The number of intratumor vessels visualized by color Doppler US was correlated with the number of vessels >100 microm (P<0.001) determined histologically. When vessel density was >30, intratumor vessels were always detected by color Dopper US. The resistance index and peak systolic velocities were significantly lower in intratumor than in peritumor vessels. CONCLUSIONS: Color Doppler US evaluated tumor angiogenesis accurately. Spectral analysis confirmed the low resistance of intratumor blood flow.
Authors: Armanda De Marchi; Elena Maria Brach del Prever; Alessandra Linari; Simona Pozza; Lucia Verga; Ugo Albertini; Marco Forni; Gian Carlo Gino; Alessandro Comandone; Adalberto Maria Brach del Prever; Raimondo Piana; Carlo Faletti Journal: Eur Radiol Date: 2010-06-27 Impact factor: 5.315
Authors: G Maconi; G M Sampietro; A Russo; S Bollani; M Cristaldi; F Parente; F Dottorini; G Bianchi Porro Journal: Gut Date: 2002-04 Impact factor: 23.059
Authors: Andrea S Doria; Raffi Karshafian; Rahim Moineddin; Arun Mohanta; Anguo Zhong; Maria Mendes; Kenneth Pritzker; Roland Jong; Peter Burns Journal: Pediatr Radiol Date: 2006-10-19
Authors: Songfeng Han; Johannes Johansson; Miguel Mireles; Ashley R Proctor; Michael D Hoffman; Joseph B Vella; Danielle S W Benoit; Turgut Durduran; Regine Choe Journal: Biomed Opt Express Date: 2015-06-26 Impact factor: 3.732