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2021 Fiscal Year Final Research Report

Analysis of diaphragm morphogenesis in the human fetus using diffusion tensor imaging

Research Project

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Project/Area Number 20K22736
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0802:Biomedical structure and function and related fields
Research InstitutionKyoto University

Principal Investigator

Kanahashi Toru  京都大学, 医学研究科, 助教 (90875999)

Project Period (FY) 2020-09-11 – 2022-03-31
Keywordsヒト胎児 / 拡散テンソル画像 / 腹壁 / 横隔膜 / 形態形成
Outline of Final Research Achievements

This study aimed to analyze the fiber architecture of the developing diaphragm and rectus abdominis in the human fetus. Thirty-five human fetuses were analyzed using T1-weighted imaging (T1W) and diffusion tensor-magnetic resonance imaging (DTI) scans obtained using a 7-T MR system. The diaphragm and rectus abdominis were reconstructed using three-dimensional images based on T1W and DTI fiber tractography. We revealed qualitative changes in the muscular and tendon sites that comprise the diaphragm and rectus abdominis during embryonic and early-fetal periods. This study provides information on normal human diaphragm and rectus abdominis development for fetal medicine and could aid in the understanding of congenital anomalies in the future.

Free Research Field

胎児・新生児医学

Academic Significance and Societal Importance of the Research Achievements

ヒト胚子期から胎児期初期における胸壁や腹壁、横隔膜等の体の「隔たり」を構成する器官の筋線維や膠原線維がどのように発達していくのか、に関して詳細に解明されていない。近年、進歩を遂げている出生前の画像診断分野では、正常なヒト発生についての知見が求められている。当該部位で発生する先天異常(横隔膜ヘルニアや腹壁破裂等)の原因を明らかにするためにも、正常について理解することは重要である。従って、ヒト胎児期初期の横隔膜、腹壁の形態形成の特徴を明らかにした本知見は、正常な発生プロセスの解明に寄与し、さらに胎児診断学への応用や治療技術向上への貢献が期待される。

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Published: 2023-01-30  

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