def fit_model():
input_data = mdt.load_input_data(
os.path.realpath(args.dwi),
os.path.realpath(args.protocol),
os.path.realpath(args.mask),
gradient_deviations=args.gradient_deviations,
noise_std=noise_std,
extra_protocol=get_extra_protocol(args.extra_protocol,
os.path.realpath('')))
optimizer_options = {}
if args.patience is not None:
optimizer_options['patience'] = args.patience
mdt.fit_model(args.model,
input_data,
output_folder,
method=args.method,
optimizer_options=optimizer_options,
recalculate=args.recalculate,
only_recalculate_last=args.only_recalculate_last,
cl_device_ind=args.cl_device_ind,
double_precision=args.double_precision,
tmp_results_dir=tmp_results_dir,
use_cascaded_inits=args.use_cascaded_inits)
def run(self, args, extra_args):
input_data = mdt.load_input_data(os.path.realpath(args.dwi),
os.path.realpath(args.protocol),
os.path.realpath(args.mask))
with mdt.with_logging_to_debug():
noise_std = mdt.estimate_noise_std(input_data)
print(noise_std)
def build_input_data(self):
return mdt.load_input_data(
self.dwi,
self.protocol,
self.mask,
noise_std=self.noise_std,
gradient_deviations=self.gradient_deviations,
extra_protocol=self.extra_protocol)
def _run_b1k_b2k_analysis(cls):
pjoin = mdt.make_path_joiner(
os.path.join(cls._tmp_dir, cls._tmp_dir_subdir, 'b1k_b2k'))
input_data = mdt.load_input_data(
pjoin('b1k_b2k_example_slices_24_38'), pjoin('b1k_b2k.prtcl'),
pjoin('b1k_b2k_example_slices_24_38_mask'))
for model_name in ['BallStick_r1', 'Tensor', 'NODDI']:
mdt.fit_model(model_name, input_data,
pjoin('output', 'b1k_b2k_example_slices_24_38_mask'))
def run(self, args, extra_args):
input_data = mdt.load_input_data(os.path.realpath(args.dwi),
os.path.realpath(args.protocol),
os.path.realpath(args.mask))
estimator = None
if args.estimator:
estimator = mdt.load_component('noise_std_estimators',
args.estimator)
with mdt.with_logging_to_debug():
noise_std = mdt.estimate_noise_std(input_data, estimator=estimator)
print(noise_std)
def _run_b6k_analysis(cls):
pjoin = mdt.make_path_joiner(
os.path.join(cls._tmp_dir, cls._tmp_dir_subdir,
'multishell_b6k_max'))
input_data = mdt.load_input_data(
pjoin('multishell_b6k_max_example_slices_24_38'),
pjoin('multishell_b6k_max.prtcl'),
pjoin('multishell_b6k_max_example_slices_24_38_mask'))
for model_name in ['CHARMED_r1', 'CHARMED_r2', 'CHARMED_r3']:
mdt.fit_model(
model_name, input_data,
pjoin('output',
'multishell_b6k_max_example_slices_24_38_mask'))
def fit_model():
mdt.fit_model(args.model,
mdt.load_input_data(
os.path.realpath(args.dwi),
os.path.realpath(args.protocol),
os.path.realpath(args.mask),
gradient_deviations=args.gradient_deviations,
noise_std=noise_std,
extra_protocol=get_extra_protocol(
args.extra_protocol, os.path.realpath(''))),
output_folder,
recalculate=args.recalculate,
only_recalculate_last=args.only_recalculate_last,
cl_device_ind=args.cl_device_ind,
double_precision=args.double_precision,
tmp_results_dir=tmp_results_dir)
def fit_model():
mdt.fit_model(args.model,
mdt.load_input_data(
os.path.realpath(args.dwi),
os.path.realpath(args.protocol),
os.path.realpath(args.mask),
gradient_deviations=args.gradient_deviations,
noise_std=noise_std,
protocol_maps=get_protocol_maps(
args.protocol_maps, os.path.realpath(''))),
output_folder,
recalculate=args.recalculate,
only_recalculate_last=args.only_recalculate_last,
cl_device_ind=args.cl_device_ind,
double_precision=args.double_precision,
cascade_subdir=args.cascade_subdir,
tmp_results_dir=tmp_results_dir,
save_user_script_info=None)
def CHARMED(dwi, mask):
import mdt
import os
import nibabel as nib
from mdt.configuration import SetGeneralOptimizer
protocol = '/media/amr/HDD/Work/October_Acquistion/MDT_multishell_protocol.prtcl'
model = 'CHARMED_r2 (Cascade|fixed)'
algorithm = 'Levenberg-Marquardt'
patience = 100
output_folder = os.getcwd()
input_data = mdt.load_input_data(dwi,
protocol,
mask,
noise_std=5,
gradient_deviations=None,
extra_protocol={})
with mdt.config_context(
SetGeneralOptimizer(algorithm, settings={'patience': patience})):
mdt.fit_model(model,
input_data,
output_folder,
recalculate=True,
only_recalculate_last=True,
double_precision=False,
cl_device_ind=[0])
os.chdir('CHARMED_r2')
CHARMED_FA = os.path.abspath('Tensor.FA.nii.gz')
CHARMED_MD = os.path.abspath('Tensor.MD.nii.gz')
CHARMED_AD = os.path.abspath('Tensor.AD.nii.gz')
CHARMED_RD = os.path.abspath('Tensor.RD.nii.gz')
CHARMED_FR = os.path.abspath('FR.nii.gz')
#I assumed that CHARMEDRestricted0.d to be the intra-axonal diffusvity
CHARMED_IAD = os.path.abspath('CHARMEDRestricted0.d.nii.gz')
return CHARMED_FA, CHARMED_MD, CHARMED_AD, CHARMED_RD, CHARMED_FR, CHARMED_IAD
if model_name.startswith('CHARMED'):
model_specific_protocols = ['hcp_mgh_1003']
for protocol_name in model_specific_protocols:
for snr in noise_snrs:
print('Going to process', trial_ind, model_name, protocol_name,
snr)
noise_std = simulations_unweighted_signal_height / snr
current_pjoin = pjoin.create_extended(protocol_name,
model_name)
input_data = mdt.load_input_data(
current_pjoin('noisy_signals_{}.nii'.format(snr)),
pjoin(protocol_name + '.prtcl'),
current_pjoin('mask.nii'),
noise_std=noise_std)
fit_results = mdt.fit_model(
model_name + ' (Cascade)', input_data,
current_pjoin('output', str(snr), str(trial_ind)))
with mdt.config_context('''
processing_strategies:
sampling:
max_nmr_voxels: 5000
'''):
mdt.sample_model(
model_name,
input_data,
os.chdir(experiment_dir + '/' + sub)
#location/directory containing all the data for this study/subject
#load data
if mdt_model == "NODDI_test":
mask_file = "data_brain_mask.nii.gz"
# generate scheme file from the bvals/bvecs
protocol = mdt.create_protocol(bvecs='data.bvec',
bvals='data.bval',
out_file=experiment_dir + '/' + sub +
'/data.prtcl')
mdt_dir = opj(experiment_dir, sub, mdt_model)
if not os.path.exists(mdt_dir):
os.mkdir(mdt_dir)
input_data = mdt.load_input_data('data.nii.gz', 'data.prtcl',
'data_brain_mask.nii.gz')
test = mdt.get_optimization_inits('NODDI', input_data, 'output')
mdt.fit_model('NODDI', input_data, 'output')
if mdt_model == "ActiveAx":
mask_file = "data_brain_mask.nii.gz"
protocol = mdt.create_protocol(bvecs='data.bvec',
bvals='data.bval',
out_file=experiment_dir + '/' + sub +
'/data.prtcl')
mdt_dir = opj(experiment_dir, sub, mdt_model)
if not os.path.exists(mdt_dir):
os.mkdir(mdt_dir)
