The earliest examples of canopic jars come from the 4th dynasty tomb of Queen Meresankh III at Giza, from the reign of Menkaure. The canopic chests which held the jars were cut from soft stone, or carved from the actual wall or floor of the tomb. However, from the 6th Dynasty, granite examples have been discovered in royal tombs which were sunk into pits in the floor at the southeast foot of the sarcophagus.
1. Bright spots: Kidney stones show up on ultrasound as bright echogenic foci (white spots) within the substance of the kidney. If the stones are larger than 3 or 4 mm there will be a darker area behind the stone representing an acoustical shadow.. Bright spots: Kidney stones show up on ultrasound as bright echogenic foci (white spots) within the substance of the kidney. If the stones are larger than 3 or 4 mm there will be a darker area behind the stone representing an acoustical shadow.
Typically the density of the spleen and liver are roughly equivalent. In steatosis, there is a difference between the density and brightness of the two organs, with the liver appearing darker. On ultrasound, fat is more echogenic (capable of reflecting sound waves). The combination of liver steatosis being dark on CT and bright on ultrasound is sometimes known as the flip flop sign.