US 12,144,673 B2
Fetal growth restriction inspection apparatus
Katsuhiko Hino, Sendai (JP)
Appl. No. 17/774,960
Filed by Katsuhiko Hino, Sendai (JP)
PCT Filed Nov. 7, 2019, PCT No. PCT/JP2019/043638
§ 371(c)(1), (2) Date May 6, 2022,
PCT Pub. No. WO2021/090434, PCT Pub. Date May 14, 2021.
Prior Publication US 2022/0386986 A1, Dec. 8, 2022
Int. Cl. A61B 8/06 (2006.01); A61B 8/08 (2006.01)
CPC A61B 8/06 (2013.01) [A61B 8/488 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An inspection apparatus comprising:
a measurement apparatus that measures an inner diameter and a blood flow velocity of an artery extending from a fetus to a placenta of a pregnant woman;
a calculation apparatus that calculates a Reynolds number based on the inner diameter and the blood flow velocity of the artery measured by the measurement apparatus;
an input apparatus that inputs a pregnancy week number of the pregnant woman;
a determination apparatus that determines, based on the pregnancy week number and the Reynolds number, whether or not the fetus is developing a fetal growth restriction, which is termed as FGR;
the determination apparatus determines that the fetus may be developing FGR in a case that the Reynolds number is less than a first threshold value at the inputted pregnancy week number; and
the first threshold value is set to 1200 for greater than or equal to 20 weeks of pregnancy and less than 30 weeks, and set to 1800 for greater than or equal to 30 weeks of pregnancy.