This standard specifies X-ray water phantoms (hereinafter referred to as fathoms), which correspond to the human chest and abdomen, respectively, as X-ray absorbers and X-ray scatterers used for adjusting, testing, and X-ray measurements of X-ray equipment or related equipment. ).
JIS Z 4915:1974 history
1974JIS Z 4915:1974 X-ray water phantom for chest and abdomen