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Theriogenology. 2016 Nov;86(8):1969-74. doi: 10.1016/j.theriogenology.2016.06.015. Epub 2016 Jun 23.

Use of magnetic resonance imaging to assess ovarian maturation in live Rhinogobio ventralis (Sauvage & Dabry de Thiersant, 1874).

Author information

1
Key Laboratory of Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, People's Republic of China; Faculty of Resources and Environmental Science, Hubei University, Wuhan, People's Republic of China; Regional Development and Environmental Response, Key Laboratory of Hubei Province, Wuhan, People's Republic of China. Electronic address: gali3721@gmail.com.
2
Department of Radiology, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
3
Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Connecticut, USA.
4
Key Laboratory of Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, People's Republic of China.

Abstract

The aim of this study is to evaluate the application of magnetic resonance imaging (MRI) to assess ovarian maturation in live female Rhinogobio ventralis (Sauvage & Dabry de Thiersant, 1874). The fish were randomly collected from the Jiangjin area of the Yangtze River between January and April 2014. Magnetic resonance imaging was performed using a 3.0 T clinical MRI scanner with a brain coil and two pulse sequences (IDEAL and 3D CUBE) were employed. Magnetic resonance and histologic images at different stages of ovarian maturation (I-IV) were acquired. An empirical equation (y = -0.1 + 1.56 × x) was derived by traditional method to describe the relationship between the gonadosomatic index (y) and the percentage volume of the ovary (x). A significant correlation (R(2) = 0.977, P < 0.01, N = 53) was found between measurements of the percentage volume of the ovary by MRI and traditional methods. The research findings suggested that MRI was a reliable, rapid, and noninvasive method to assess stages of ovarian maturity in female R. ventralis.

KEYWORDS:

Assessment; Magnetic resonance imaging; Ovarian maturation; Rhinogobio ventralis

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