问题
I'm using pydicom 1.0.0a1, downloaded from here, When I run the following code:
ds=pydicom.read_file('./DR/abnormal/abc.dcm',force=True)
ds.pixel_array
this error occurs:
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-6-d4e81d303439> in <module>()
7 ds=pydicom.read_file('./DR/abnormal/abc.dcm',force=True)
8
----> 9 ds.pixel_array
10
/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/dataset.pyc in __getattr__(self, name)
501 if tag is None: # `name` isn't a DICOM element keyword
502 # Try the base class attribute getter (fix for issue 332)
--> 503 return super(Dataset, self).__getattribute__(name)
504 tag = Tag(tag)
505 if tag not in self: # DICOM DataElement not in the Dataset
/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/dataset.pyc in pixel_array(self)
1064 The Pixel Data (7FE0,0010) as a NumPy ndarray.
1065 """
-> 1066 return self._get_pixel_array()
1067
1068 # Format strings spec'd according to python string formatting options
/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/dataset.pyc in _get_pixel_array(self)
1042 elif self._pixel_id != id(self.PixelData):
1043 already_have = False
-> 1044 if not already_have and not self._is_uncompressed_transfer_syntax():
1045 try:
1046 # print("Pixel Data is compressed")
/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/dataset.pyc in _is_uncompressed_transfer_syntax(self)
662 """Return True if the TransferSyntaxUID is a compressed syntax."""
663 # FIXME uses file_meta here, should really only be thus for FileDataset
--> 664 return self.file_meta.TransferSyntaxUID in NotCompressedPixelTransferSyntaxes
665
666 def __ne__(self, other):
/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/dataset.pyc in __getattr__(self, name)
505 if tag not in self: # DICOM DataElement not in the Dataset
506 # Try the base class attribute getter (fix for issue 332)
--> 507 return super(Dataset, self).__getattribute__(name)
508 else:
509 return self[tag].value
AttributeError: 'Dataset' object has no attribute 'TransferSyntaxUID'
I read the google group post , and I changed the filereader.py file to the posted file, and I got this error:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/__init__.py", line 41, in read_file
from pydicom.dicomio import read_file
File "/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/dicomio.py", line 3, in <module>
from pydicom.filereader import read_file, read_dicomdir
File "/Applications/anaconda/lib/python2.7/site-packages/pydicom-1.0.0a1-py2.7.egg/pydicom/filereader.py", line 35, in <module>
from pydicom.datadict import dictionaryVR
ImportError: cannot import name dictionaryVR
Does anybody know how to solve this problem?
回答1:
You should set the TransferSyntaxUID after reading the file before trying to get the pixel_array.
import pydicom.uid
ds=pydicom.read_file('./DR/abnormal/abc.dcm',force=True)
ds.file_meta.TransferSyntaxUID = pydicom.uid.ImplicitVRLittleEndian # or whatever is the correct transfer syntax for the file
ds.pixel_array
The correction from the post you referenced was done before some changes in the code to harmonize some naming, so the error is thrown because the current master uses dictionary_VR rather than dictionaryVR. Setting the transfer syntax in user code as above avoids that problem.
来源：https://stackoverflow.com/questions/44492420/pydicom-dataset-object-has-no-attribute-transfersyntaxuid