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 add_preset(self, classname, name, idx=None):
"""
Adds a new preset instance to the playlist. Classname must be a currently loaded
preset class. Name must be unique. If idx is specified, the preset will be inserted
at the position idx, else it will be appended to the end of the playlist.
"""
if classname not in list(self.available_pattern_classes.keys()):
log.error("Tried to add nonexistent preset class %s" % classname)
return False
if self.preset_name_exists(name):
log.error("Tried to add a preset that already exists: %s" % name)
return False
inst = self.available_pattern_classes[classname][1](self._app,
slugify(name))
inst.set_name(name)
inst.save()
inst._reset()
if idx is not None:
self._playlist.insert(idx, inst)
else:
self._playlist.append(inst)
if self.active_preset == self.next_preset:
self.update_next_preset()
self.changed()
return True
def add_existing_preset(self, name):
# TODO: Should we support multiple instances of the same preset on a playlist?
for p in self._playlist:
if p.name() == name:
log.error("Cannot add a preset to the same playlist twice!")
return False
slug = slugify(name)
preset_data = {}
preset_path = os.path.join(os.getcwd(), "data", "presets",
"".join([slug, ".json"]))
try:
with open(preset_path, "r") as f:
preset_data = json.load(f)
except:
log.error("Could not load preset %s" % name)
return False
self._playlist.append(self.get_preset_from_json_data(
preset_data, slug))
if self.active_preset == self.next_preset:
self.update_next_preset()
self.changed()
return True
def add_preset(self, classname, name, idx=None):
"""
Adds a new preset instance to the playlist. Classname must be a currently loaded
preset class. Name must be unique. If idx is specified, the preset will be inserted
at the position idx, else it will be appended to the end of the playlist.
"""
if classname not in self.available_pattern_classes.keys():
log.error("Tried to add nonexistent preset class %s" % classname)
return False
if self.preset_name_exists(name):
log.error("Tried to add a preset that already exists: %s" % name)
return False
inst = self.available_pattern_classes[classname][1](self._app, slugify(name))
inst.set_name(name)
inst.save()
inst._reset()
if idx is not None:
self._playlist.insert(idx, inst)
else:
self._playlist.append(inst)
if self.active_preset == self.next_preset:
self.update_next_preset()
self.changed()
return True
def add_existing_preset(self, name):
# TODO: Should we support multiple instances of the same preset on a playlist?
for p in self._playlist:
if p.name() == name:
log.error("Cannot add a preset to the same playlist twice!")
return False
slug = slugify(name)
preset_data = {}
preset_path = os.path.join(os.getcwd(), "data", "presets", "".join([slug, ".json"]))
try:
with open(preset_path, "r") as f:
preset_data = json.load(f)
except:
log.error("Could not load preset %s" % name)
return False
self._playlist.append(self.get_preset_from_json_data(preset_data, slug))
if self.active_preset == self.next_preset:
self.update_next_preset()
self.changed()
return True
def put(self):
# auto-populate artist_slug
self.artist_slug = slugify(self.artist)
# Delete the cached artist, tag lists whenever created/updated
memcache.delete('artist_list')
memcache.delete('tag_list')
key = super(Song, self).put()
return key
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 set_name(self, name):
self._instance_name = name
self._instance_slug = slugify(name)
self.filename = os.path.join(os.getcwd(), "data", "presets",
"".join([self._instance_slug, ".json"]))
self.save()
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
