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MIRIAD converter to BIDS #1290

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Implementation of a BIDS converter for the MIRIAD cohort.

@MatthieuJoulot
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MatthieuJoulot commented Sep 9, 2024

Status right now:

  • Very quick and very dirty (ofc not tested, ofc not documented)
  • converts the database
  • Does not take into account any clinical data (even though it takes a clinical_data directory in input)
  • does not pass tests

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Thanks for the work @MatthieuJoulot ! I made a few... lots of comments actually ^^'. Tell me if you need clarification.

return value
raise ValueError(
f"BIDS MIRIAD subject ID {value} is not properly formatted. "
"Expecting a 'sub-MIRIAD' format."
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Suggested change
"Expecting a 'sub-MIRIAD' format."
"Expecting a 'sub-MIRIADXXX' format."

@@ -319,6 +321,29 @@ def from_original_study_id(cls, study_id: str) -> str:
def to_original_study_id(self) -> str:
return str(self.replace("sub-", ""))

class MIRIADBIDSSubjectID(BIDSSubjectID):
"""Implementation for MIRIAD of the BIDSSubjectIDClass, allowing to go from the source id MIRIAD###
to a bids id sub-MIRAD### and reciprocally."""
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Suggested change
to a bids id sub-MIRAD### and reciprocally."""
to a bids id sub-MIRIAD### and reciprocally."""

return f"sub-{study_id}"
raise ValueError(
f"Raw MIRIAD subject ID {study_id} is not properly formatted. "
"Expecting a 'Y' format."
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Suggested change
"Expecting a 'Y' format."
"Expecting a 'MIRIADXXX' format."

Comment on lines 12 to 14
input_dir = 'your_input_directory' # Where the original data is located
output_dir = 'your_output_directory' # Where the BIDS data will be written
csv_file = 'metadata.csv' # Metadata CSV file to store extracted information
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Suggested change
input_dir = 'your_input_directory' # Where the original data is located
output_dir = 'your_output_directory' # Where the BIDS data will be written
csv_file = 'metadata.csv' # Metadata CSV file to store extracted information

You can directly use the paths given to the convert function :

  • input_dir < > path_to_dataset
  • output_dir < > bids_dir

And if you use 'metadata.csv' only once I would not define a variable specifically for this, you can use it as is inside convert

subjects (Optional[UserProvidedPath], optional): _description_. Defaults to None.
n_procs (Optional[int], optional): _description_. Defaults to 1.
"""
from clinica.iotools.converters.miriad_to_bids.miriad_to_bids_utils import create_bids_structure
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Suggested change
from clinica.iotools.converters.miriad_to_bids.miriad_to_bids_utils import create_bids_structure
from clinica.iotools.converters.miriad_to_bids.miriad_to_bids_utils import create_bids_structure
from ..utils import validate_input_path
path_to_dataset = validate_input_path(path_to_dataset)
bids_dir = validate_input_path(bids_dir, check_exist=False)
if n_procs != 1:
cprint(
f"{get_converter_name(StudyName.MIRIAD)} converter does not support multiprocessing yet. n_procs set to 1.",
lvl="warning",
)
if not subjects:
#todo

First step there would be to check the inputs of the convert function :

  • your paths : the function given here verify existence go the path if needed and return a Path object, so we are sure we get always the same type of objects when it comes to user-given paths.
  • optional parameters : n_procs is not implemented (and I doubt you want to) so we just warn the user if she/he tries to use it. Should be the same for subjects 😁

Makes me wonder though, you do not plan on using any clinical data as an input ?

input_file = os.path.join(root, file)

# Create BIDS structure and move the file
create_bids_structure(subject_id, session, cohort, diagnosis, gender, input_file, path_to_dataset, bids_dir, path_to_clinical)
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Suggested change
create_bids_structure(subject_id, session, cohort, diagnosis, gender, input_file, path_to_dataset, bids_dir, path_to_clinical)
create_bids_structure(subject_id, session, file_path, bids_dir)

Comment on lines 60 to 61
bids_filename = f"sub-{subject_id}_ses-{session}_T1w.nii.gz"
output_file = os.path.join(f"sub-{subject_id}", f"ses-{session}", 'anat', bids_filename)
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Suggested change
bids_filename = f"sub-{subject_id}_ses-{session}_T1w.nii.gz"
output_file = os.path.join(f"sub-{subject_id}", f"ses-{session}", 'anat', bids_filename)
output_file = f"sub-MIRIAD{subject_id}/ses-{session}/anat/sub-MIRIAD{subject_id}_ses-{session}_T1w.nii.gz"

parts = file.split('_')

# Extract information from filename
cohort = parts[0] # miriad
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Suggested change
cohort = parts[0] # miriad

If it is always the same as I assumed above in my regex you do not need to retrieve the info anymore

# Write the extracted information to CSV
bids_filename = f"sub-{subject_id}_ses-{session}_T1w.nii.gz"
output_file = os.path.join(f"sub-{subject_id}", f"ses-{session}", 'anat', bids_filename)
csvwriter.writerow([cohort, subject_id, diagnosis, gender, session, input_file, output_file])
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Do you want the "subject_id" to be MIRIADXXX or XXX ?

)

@classmethod
def from_original_study_id(cls, study_id: str) -> str:
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As written you should have ids of 3 digits always (so there would need to be a padding if it can be 1 or 2). Though I don't think you are using that class for now

@NicolasGensollen NicolasGensollen added this to the v0.10.0 milestone Sep 10, 2024
@MatthieuJoulot
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Alright clinical data have been added

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3 participants