version description donor_id tissue_id execution_datetime protocols_io_doi operator operator_email pi pi_email assay_category assay_type acquisition_instrument_vendor acquisition_instrument_model single_file_export_format max_x_width_value max_x_width_unit max_y_height_value max_y_height_unit roi_description roi_id resolution_x_value resolution_x_unit resolution_y_value resolution_y_unit resolution_z_value resolution_z_unit pixel_size_z_value pixel_size_z_unit number_of_images frequency_value frequency_unit coil field_strength_value field_strength_unit scanning_sequence sequence_variant echo_time repetition_time flip_angle echo_train_length acquisition_matrix_size_in_frequency_encoding_direction acquisition_matrix_size_in_phase_encoding_direction number_of_image_rows number_of_image_columns number_of_averages contributors_path data_path 1 clinical_imaging MRI um / mm um / mm nm / um / mm nm / um / mm nm / um / mm nm / um / mm Hz / kHz / MHz Tesla spin echo / inversion recovery / gradient echo / echo planar / research mode segmented k-space / magnetization transfer contrast / steady state / time reversed steady state / spoiled / magnetization prepared / oversampling phase / no sequence variant