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Abstract #4656

The Signal Intensity of Anterior and Posterior Lobe of Pituitary and Thyroid Gland in Preterm and Term Infants

Sayo Otani1, Yasutaka Fushimi1, Satoshi Nakajima1, Yusuke Yokota1, Sonoko Oshima1, Azusa Sakurama1, Krishna Pandu Wicaksono1, Tomohisa Okada2, and Kaori Togashi1
1Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, 2Human Brain Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan

We have evaluated the signal and the volume of anterior pituitary, posterior pituitary and thyroid gland in preterm and term infants on MRI by using 3D T1-PETRA sequence. Our study showed that the intensity of anterior pituitary was positively correlated with gestational age (GA), negatively correlated with chronological age (CA). We showed the intensity of posterior pituitary was also positively correlated with GA, negatively correlated with CA. We also demonstrated that the intensity of thyroid was positively correlated with GA, negatively correlated with CA. Our results may have relation to the maturity of hypothalamic-pituitary-thyroid (HPT) axis.

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