class_docstr: Class returns a list of Ecat images, with one image(hdr/data) per frame
class_docstr_tok: ["Class","returns","a","list","of","Ecat","images",",","with","one","image","(","hdr\/data",")","per","frame"]
docstr: returns 4X4 affine
docstr_tok: ["returns","4X4","affine"]
code: def get_frame_affine(self, frame):
      """returns 4X4 affine"""
      return self._subheader.get_frame_affine(frame=frame)
  
imports: import warnings
  from numbers import Integral
  import numpy
  from .arraywriters import make_array_writer
  from .fileslice import canonical_slicers, predict_shape, slice2outax
  from .spatialimages import SpatialHeader, SpatialImage
  from .volumeutils import array_from_file, make_dt_codes, native_code, swapped_code
  from .wrapstruct import WrapStruct
label_desc: Use image node_id 3 for calling the EcatImage obj's underlying member method code with example usage: obj.get_frame_affine(frame) and returns: self