Gadolinium-phthalein Complexone as a Contrast Agent for Hepatobiliary MR Imaging
Yasutaka Kawamura, Keigo Endo, Mitsuru Koizumi, Yuji Watanabe, Tsuneo Saga, Junji Konishi, Kazuko Horiuchi, Akira Yokoyama
Abstract
Yasutaka Kawamura, Keigo Endo, Mitsuru Koizumi, Yuji Watanabe, Tsuneo Saga, Junji Konishi, Kazuko Horiuchi, Akira Yokoyama
Abstract
Gadolinium-phthalein complexone (Gd-PC) was developed as a hepatobiliary magnetic resonance (MR) contrast agent. Phthalein complexone is one of the iminodiacetic acid derivatives and a structural analogue of bromosulfophthalein. Gadolinium-PC substantially enhanced signal intensity of normal functioning livers on T1-weighted MR images. Contrast enhancement of rabbit liver and gradual accumulation of high intensity bile in the gallbladder were observed after intravenous injection of 0.05 and 0.1 mmol/kg Gd-PC. However, 0.1 mmol/kg of Gd-DTPA caused little effect on liver MR.
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Gadolinium-phthalein complexone (Gd-PC) was developed as a hepatobiliary magnetic resonance (MR) contrast agent. Phthalein complexone is one of the iminodiacetic acid derivatives and a structural analogue of bromosulfophthalein. Gadolinium-PC substantially enhanced signal intensity of normal functioning livers on T1-weighted MR images. Contrast enhancement of rabbit liver and gradual accumulation of high intensity bile in the gallbladder were observed after intravenous injection of 0.05 and 0.1 mmol/kg Gd-PC. However, 0.1 mmol/kg of Gd-DTPA caused little effect on liver MR.
Key concepts: Gadolinium, Medicine, Magnetic resonance imaging, Gadolinium DTPA, Iminodiacetic acid, MRI contrast agent, Gallbladder, Contrast (vision)