get attribute accessor only for specific method in laravel

I want to modify some values of my query result for API call. here's my query

public function modules()
{
    Module::select('id','name','image')->get()->toJson();
}

so I want to modify image value, add full path to it. I added accessor

public function getImageAttribute($image)
{
    return asset($image);
}

and it works fine, but the problem is now it will be affecting this column every time i try to retrieve it. is there way to use this accessor(getImageAttribute) only for modules method?

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