what's for to add meta_dict when invoking LoadImaged ?

[luxunxiansheng]

Hi, there,
Once invoking Loadimaged , besides the original metatensor item, one more dict item "postfix_meta_dict" is appended to the orignal dict data sturcutre . what's the purpose ? when will that meta_dict be used? should I care it in my code ?

thanks

[wyli]

Hi, that was developed before the metatensor API, it exists only for backward compatibility for monai <=0.9, Loadimaged(image_only=True, ...) will remove the additional key.

[luxunxiansheng]

One more question: The meta info will be used in the transformations which follow the LoadImaged ? or only the affine is used in the following transformations?