def __initialized(self):
try:
header = read_file(self.__filename, defer_size=None, stop_before_pixels=True)
except InvalidDicomError:
self.__isDicom = False
return
try:
#find the manufacturer
self.__manufacturer = 'UNKNOWN'
if 'Manufacturer' in header:
for manufacturer in manufacturers:
if manufacturer in header.Manufacturer:
self.__manufacturer = manufacturer
self.__patientName = util.slugify(header.PatientName)
self.__seriesDescription = util.slugify(header.SeriesDescription)
self.__seriesNumber = header.SeriesNumber
self.__instanceNumber = header.InstanceNumber
self.__echoTime = header.EchoTime
self.__isDicom = True
except AttributeError as a:
if "EchoTime" in a.message:
try:
self.__echoTime = header[Tag((0x2001, 0x1025))].value
self.__isDicom = True
except KeyError as k:
self.__isDicom = False
else:
self.__isDicom = False
if self.isSiemens():
#inherith Siemens ascconv properties
Ascconv.__init__(self, self.__filename)
bandwidthPerPixelPhaseEncodeTag = Tag((0x0019, 0x1028))
try:
if header.has_key(bandwidthPerPixelPhaseEncodeTag):
val = header[bandwidthPerPixelPhaseEncodeTag].value
try:
self.__bandwidthPerPixelPhaseEncode = float(val)
except ValueError:
# some data have wrong VR in dicom, try to unpack
self.__bandwidthPerPixelPhaseEncode = struct.unpack('d', val)[0]
self.__echoSpacing = 1/(self.__bandwidthPerPixelPhaseEncode* self.getEpiFactor()) *1000.0 * \
self.getPatFactor() * self.getPhaseResolution() * \
self.getPhaseOversampling()
except (KeyError, IndexError, TypeError, ValueError):
self.__echoSpacing = None
def __initialized(self):
try:
header = read_file(self.__filename, defer_size=None, stop_before_pixels=True, force=True)
except InvalidDicomError:
self.__isDicom = False
return
try:
# find the manufacturer
self.__manufacturer = 'UNKNOWN'
if 'Manufacturer' in header:
for manufacturer in manufacturers:
if manufacturer in header.Manufacturer:
self.__manufacturer = manufacturer
self.__patientName = util.slugify(header.PatientName)
self.__seriesDescription = util.slugify(header.SeriesDescription)
self.__seriesNumber = header.SeriesNumber
self.__instanceNumber = header.InstanceNumber
self.__mrModel = header.ManufacturerModelName
self.__magneticFieldStrength = header.MagneticFieldStrength
self.__studyUID = header.StudyInstanceUID
self.__tr = float(header.RepetitionTime) # TR Repetition Time
self.__te = float(header.EchoTime) # TE Echo Time
self.__flipAngle = float(header.FlipAngle) # Flip Angle
self.__matrixSize = [value for value in header.AcquisitionMatrix if value != 0] # Matrix Size
self.__voxelSize = map(float, [header.PixelSpacing[0], # Voxel size
header.PixelSpacing[1],
header.SliceThickness])
self.__fov = self.__matrixSize[0] * self.__voxelSize[0] # Compute FOV
self.__isDicom = True
except AttributeError as a:
if "EchoTime" in a.message:
try:
self.__te = header[Tag((0x2001, 0x1025))].value
self.__isDicom = True
except KeyError as k:
self.__isDicom = False
else:
self.__isDicom = False
if self.isSiemens():
if 'DIFFUSION' and 'MOSAIC' in header.ImageType: # If Diffusion Acquistion
self.__SequenceName = 'Diffusion'
elif 'DIFFUSION' in header.ImageType: # If b0 Acquistion
self.__SequenceName = 'b0'
elif 'M' and 'NORM' in header.ImageType: # If T1 Acquisition
self.__SequenceName = 'Structural T1'
self.__ti = float(header.InversionTime)
elif 'P' in header.ImageType: # If Phase acquisition
self.__SequenceName = 'Phase'
else: # If Magnitude acquisition
self.__SequenceName = 'Magnitude'
# inherith Siemens ascconv properties
Ascconv.__init__(self, self.__filename)
bandwidthPerPixelPhaseEncodeTag = Tag((0x0019, 0x1028))
try:
if header.has_key(bandwidthPerPixelPhaseEncodeTag):
val = header[bandwidthPerPixelPhaseEncodeTag].value
try:
self.__bandwidthPerPixelPhaseEncode = float(val)
except ValueError:
# some data have wrong VR in dicomparser, try to unpack
self.__bandwidthPerPixelPhaseEncode = struct.unpack('d', val)[0]
self.__echoSpacing = 1 / (self.__bandwidthPerPixelPhaseEncode * self.getEpiFactor()) * 1000.0 * \
self.getPatFactor() * self.getPhaseResolution() * \
self.getPhaseOversampling()
except (KeyError, IndexError, TypeError, ValueError):
self.__echoSpacing = None
def __initialized(self):
try:
header = read_file(self.__filename,
defer_size=None,
stop_before_pixels=True,
force=True)
except InvalidDicomError:
self.__isDicom = False
return
try:
# find the manufacturer
self.__manufacturer = 'UNKNOWN'
if 'Manufacturer' in header:
for manufacturer in manufacturers:
if manufacturer in header.Manufacturer:
self.__manufacturer = manufacturer
self.__patientName = util.slugify(header.PatientName)
self.__seriesDescription = util.slugify(header.SeriesDescription)
self.__seriesNumber = header.SeriesNumber
self.__instanceNumber = header.InstanceNumber
self.__mrModel = header.ManufacturerModelName
self.__magneticFieldStrength = header.MagneticFieldStrength
self.__studyUID = header.StudyInstanceUID
self.__tr = float(header.RepetitionTime) # TR Repetition Time
self.__te = float(header.EchoTime) # TE Echo Time
self.__flipAngle = float(header.FlipAngle) # Flip Angle
self.__matrixSize = [
value for value in header.AcquisitionMatrix if value != 0
] # Matrix Size
self.__voxelSize = map(
float,
[
header.PixelSpacing[0], # Voxel size
header.PixelSpacing[1],
header.SliceThickness
])
self.__fov = self.__matrixSize[0] * self.__voxelSize[
0] # Compute FOV
self.__isDicom = True
except AttributeError as a:
if "EchoTime" in a.message:
try:
self.__te = header[Tag((0x2001, 0x1025))].value
self.__isDicom = True
except KeyError as k:
self.__isDicom = False
else:
self.__isDicom = False
if self.isSiemens():
if 'DIFFUSION' and 'MOSAIC' in header.ImageType: # If Diffusion Acquistion
self.__SequenceName = 'Diffusion'
elif 'DIFFUSION' in header.ImageType: # If b0 Acquistion
self.__SequenceName = 'b0'
elif 'M' and 'NORM' in header.ImageType: # If T1 Acquisition
self.__SequenceName = 'Structural T1'
self.__ti = float(header.InversionTime)
elif 'P' in header.ImageType: # If Phase acquisition
self.__SequenceName = 'Phase'
else: # If Magnitude acquisition
self.__SequenceName = 'Magnitude'
# inherith Siemens ascconv properties
Ascconv.__init__(self, self.__filename)
bandwidthPerPixelPhaseEncodeTag = Tag((0x0019, 0x1028))
try:
if header.has_key(bandwidthPerPixelPhaseEncodeTag):
val = header[bandwidthPerPixelPhaseEncodeTag].value
try:
self.__bandwidthPerPixelPhaseEncode = float(val)
except ValueError:
# some data have wrong VR in dicomparser, try to unpack
self.__bandwidthPerPixelPhaseEncode = struct.unpack(
'd', val)[0]
self.__echoSpacing = 1 / (self.__bandwidthPerPixelPhaseEncode * self.getEpiFactor()) * 1000.0 * \
self.getPatFactor() * self.getPhaseResolution() * \
self.getPhaseOversampling()
except (KeyError, IndexError, TypeError, ValueError):
self.__echoSpacing = None
