Abbreviated brain imaging related datas

hello, how to know non-abbreviated version of the following variables.

“summary_bg_k”: 149.4512750541718,
“summary_bg_mad”: 4.677135944366455,
“summary_bg_mean”: 30.14252281188965,
“summary_bg_median”: 22.649646759033203,
“summary_bg_n”: 38299.0,
“summary_bg_p05”: 18.37184867858887,
“summary_bg_p95”: 61.68020095825194,
“summary_bg_stdv”: 32.53798294067383,
“summary_fg_k”: 2.1932780320311887,
“summary_fg_mad”: 131.74026489257812,
“summary_fg_mean”: 727.1019287109375,
“summary_fg_median”: 724.23388671875,
“summary_fg_n”: 18174.0,
“summary_fg_p05”: 508.63769989013673,
“summary_fg_p95”: 956.189306640625,
“summary_fg_stdv”: 148.0261993408203,

"aor": 0.00701138888888889,
  "aqi": 0.005955933472222222,
  "dvars_nstd": 23.007580395070427,
  "dvars_std": 1.1485372228169015,
  "dvars_vstd": 1.0361464481690144,
  "efc": 0.5408143153614009,
  "fber": 927.7630004882812,
  "fd_mean": 0.14585455102041878,
  "fd_num": 9,
  "fd_perc": 12.5,
  "fwhm_avg": 2.353655708001202,
  "fwhm_x": 2.207999473571903,
  "fwhm_y": 2.5238251504317017,
  "fwhm_z": 2.3291425,
  "gcor": 0.03116925557454427,
  "gsr_x": -0.0032458396162837744,
  "gsr_y": 0.025950945913791656,
  "metadata": {
    "EchoTime": 0.035,
    "FlipAngle": 90,
    "MagneticFieldStrength": 3,
    "Manufacturer": "Siemens",
    "ManufacturersModelName": "Magnetom Trio",
    "PulseSequenceType": "single-shot echo-planar",
    "RepetitionTime": 2.2,
    "TaskName": "Functional localizer",
    "md5sum": "cc2d8f76a984d32e8a5d960177c11c63",
    "modality": "bold",
    "run_id": "01",
    "settings": {
      "exclude_index": 0,
      "fd_thres": 0.2,
      "hmc_fsl": false
    },
    "software": "mriqc",
    "subject_id": "ds205s07",
    "task_id": "functionallocalizer",
    "version": "0+unknown"
  },
  "size_t": 72,
  "size_x": 53,
  "size_y": 53,
  "size_z": 27,
  "snr": 4.8924714994375265,
  "spacing_tr": 2.200000047683716,
  "spacing_x": 4.000000953674316,
  "spacing_y": 3.999999761581421,
  "spacing_z": 4.0,
  "summary_bg_k": 149.4512750541718,
  "summary_bg_mad": 4.677135944366455,
  "summary_bg_mean": 30.14252281188965,
  "summary_bg_median": 22.649646759033203,
  "summary_bg_n": 38299.0,
  "summary_bg_p05": 18.37184867858887,
  "summary_bg_p95": 61.68020095825194,
  "summary_bg_stdv": 32.53798294067383,
  "summary_fg_k": 2.1932780320311887,
  "summary_fg_mad": 131.74026489257812,
  "summary_fg_mean": 727.1019287109375,
  "summary_fg_median": 724.23388671875,
  "summary_fg_n": 18174.0,
  "summary_fg_p05": 508.63769989013673,
  "summary_fg_p95": 956.189306640625,
  "summary_fg_stdv": 148.0261993408203,
  "tsnr": 62.616355895996094