First, let's get a bit of the jargon down. The playing surface in curling is called the sheet. Sheet dimensions can vary, but they're usually around 150 feet long by about 15 feet wide. The sheet is covered with tiny droplets of water that become ice and cause the stones to curl, or deviate from a straight path.
RE: FDG Uptake Explanation - PET SCAN. uptake is the amount of radioactive sugar that the cells are using for metabolism. It is possible to have a positive area on PET that is not cancer. Thats why its important to compare one scan to the next to see if there are changes.
RE: FDG Uptake Explanation - PET SCAN. The PET is used to detect rapid cell metabolism which could indicate metastatic disease. Your mom has a LN with uptake, but has not changed in size. The lesions in the vertebral bodies have no uptake and have not changed. This indicates no change since the last PET which is good.