def get_sequence_item(self, value: SQValueType) -> "Dataset":
"""Return a sequence item for the JSON dict `value`.
Parameters
----------
value : dict or None
The sequence item from the JSON entry.
Returns
-------
dataset_class
The decoded dataset item.
Raises
------
KeyError
If the "vr" key is missing for a contained element
"""
from pydicom import DataElement
from pydicom.dataelem import empty_value_for_VR
ds = self.dataset_class()
value = {} if value is None else value
for key, val in value.items():
if 'vr' not in val:
raise KeyError(f"Data element '{self.tag}' must have key 'vr'")
vr = val['vr']
unique_value_keys = tuple(set(val.keys()) & set(JSON_VALUE_KEYS))
if not unique_value_keys:
# data element with no value
elem = DataElement(tag=int(key, 16),
value=empty_value_for_VR(vr),
VR=vr)
else:
value_key = unique_value_keys[0]
elem = DataElement.from_json(self.dataset_class, key, vr,
val[value_key], value_key,
self.bulk_data_element_handler)
ds.add(elem)
return ds
def get_sequence_item(self, value):
"""Return a sequence item for the JSON dict `value`.
Parameters
----------
value : dict or None
The sequence item from the JSON entry.
Returns
-------
dataset_class
The decoded dataset item.
Raises
------
KeyError
If the "vr" key is missing for a contained element
"""
ds = self.dataset_class()
if value:
for key, val in value.items():
if 'vr' not in val:
fmt = 'Data element "{}" must have key "vr".'
raise KeyError(fmt.format(self.tag))
vr = val['vr']
unique_value_keys = tuple(
set(val.keys()) & set(JSON_VALUE_KEYS))
from pydicom import DataElement
from pydicom.dataelem import empty_value_for_VR
if not unique_value_keys:
# data element with no value
elem = DataElement(tag=int(key, 16),
value=empty_value_for_VR(vr),
VR=vr)
else:
value_key = unique_value_keys[0]
elem = DataElement.from_json(self.dataset_class, key, vr,
val[value_key], value_key)
ds.add(elem)
return ds