def _is_mri_subject(subject, subjects_dir=None):
    subjects_dir = get_subjects_dir(subjects_dir, raise_error=True)

    fname = head_bem_fname.format(subjects_dir=subjects_dir, subject=subject)
    if not os.path.exists(fname):
        return False

    return True
Deletes this PTR record from its device.
dataset/ETHPy150Open mne-tools/mne-python/mne/coreg.py/_is_mri_subject--crossover with--dataset/ETHPy150Open rackspace/pyrax/pyrax/clouddns.py/CloudDNSPTRRecord.delete