class_docstr: PAR/REC header
class_docstr_tok: ["PAR\/REC","header"]
docstr: Echo train length of the recording
docstr_tok: ["Echo","train","length","of","the","recording"]
code: def get_echo_train_length(self):
      """Echo train length of the recording"""
      return self.general_info["epi_factor"]
  
imports: import re
  import warnings
  from collections import OrderedDict
  from copy import deepcopy
  from io import StringIO
  from locale import getpreferredencoding
  import numpy
  from .affines import apply_affine, dot_reduce, from_matvec
  from .eulerangles import euler2mat
  from .fileslice import fileslice, strided_scalar
  from .nifti1 import unit_codes
  from .openers import ImageOpener
  from .spatialimages import SpatialHeader, SpatialImage
  from .volumeutils import Recoder, array_from_file
label_desc: Use image node_id 7 for calling the PARRECHeader obj's underlying member method code with example usage: obj.get_echo_train_length() and returns: self