Yuko Otake1, Hidenori Kanazawa2, Hironori Takahashi3, Shigeki Matsubara3, Hideharu Sugimoto4. 1. Department of Radiology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan; Department of Radiology, Tochigi Medical Center Shimotsuga, 420-1 Kawasture Ohira, Tochigi, Tochigi, 329-4498, Japan. Electronic address: oh_yuko@jichi.ac.jp. 2. Department of Radiology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan; Department of Radiology, Haga Red Cross Hospital, 2461 Daimachi, Moka, Tochigi, 321-4306, Japan. 3. Department of Obstetrics and Gynecology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan. 4. Department of Radiology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
Abstract
OBJECTIVE: To determine the magnetic resonance imaging (MRI)-detectable morphology of the placental cotyledon, we proposed the first cotyledon appearance scores on MRI. Cotyledon appearance scores consist of two subscores: orthogonal and parallel cotyledon appearance scores. These represent cotyledon appearance orthogonal or parallel to the placental thickness, respectively. STUDY DESIGN: This retrospective study was approved by the institutional review board of our hospital. A total of 51 placentas were studied. Two MRI specialists independently evaluated the two cotyledon appearance subscores at various gestational ages. Scores were related to gestational age. RESULTS: Cotyledons were not evident in the 2nd trimester, but were identified in the 3rd trimester. Cotyledon appearance subscores increased according to gestational age, with subscores showing good inter-observer agreement. CONCLUSION: Cotyledon appearance scores determined that placental cotyledons became evident on MRI, suggesting that placental maturity progressed with gestational age. These placental MRI findings may serve as references for placental MRI to detect placental abnormalities.
OBJECTIVE: To determine the magnetic resonance imaging (MRI)-detectable morphology of the placental cotyledon, we proposed the first cotyledon appearance scores on MRI. Cotyledon appearance scores consist of two subscores: orthogonal and parallel cotyledon appearance scores. These represent cotyledon appearance orthogonal or parallel to the placental thickness, respectively. STUDY DESIGN: This retrospective study was approved by the institutional review board of our hospital. A total of 51 placentas were studied. Two MRI specialists independently evaluated the two cotyledon appearance subscores at various gestational ages. Scores were related to gestational age. RESULTS: Cotyledons were not evident in the 2nd trimester, but were identified in the 3rd trimester. Cotyledon appearance subscores increased according to gestational age, with subscores showing good inter-observer agreement. CONCLUSION: Cotyledon appearance scores determined that placental cotyledons became evident on MRI, suggesting that placental maturity progressed with gestational age. These placental MRI findings may serve as references for placental MRI to detect placental abnormalities.
Authors: Abdalla Ahmed Elamin; Mohammed Noah Mohammed Ahmed; Abubaker El Elhaj; Tarig Mahmoud Ahmed Hussien; Abdelrahim Awadelkarim Abdelrahman Mohamed; Hamza Mohamed; Saadeldin Ahmed Idris Journal: Int J Appl Basic Med Res Date: 2022-01-31