Absorbing sac seen on a dog ultrasound scan at day 34 gestation

Here you see a scan image of Pyometra, it was an Accidental finding on ultrasound 6 weeks from mating, The scan was preformed to check for pregnancy but in this

Here you can see a sac that has been captured absorbing at day 34 of pregnancy, as you can see it looks the shape of a Doughnut, after a couple

Clear dog scan at 34 days gestation using the SIUI APOGEE 1000 Notice how clear the sacs can be seen on the video, Also i will include a still image