Handling for GE presscsi and probe-s sequences. (#63)

* Tweaks to DICOM error handling and directory input

* Add handling of presscsi and probe-s sequences.

* Update changelog.

CHANGELOG.md

@@ -1,5 +1,9 @@
 This document contains the Spec2nii release history in reverse chronological order.
 
+0.6.3 (Monday 6th February 2023)
+--------------------------------
+- Added handling for GE presscsi and probe-s sequences.
+
 0.6.2 (Sunday 5th February 2023)
 ----------------------------------
 - Handle HYPER references in SPAR/SDAT pipeline

spec2nii/GE/ge_pfile.py

@@ -91,7 +91,7 @@ def _process_svs_pfile(pfile):
     '''
     psd = pfile.hdr.rhi_psdname.decode('utf-8').lower()
 
-    if psd == 'probe-p':
+    if psd in ('probe-p', 'probe-s'):
         data, meta, dwelltime, fname_suffix = _process_probe_p(pfile)
     elif psd in ('oslaser', 'slaser_cni'):
         data, meta, dwelltime, fname_suffix = _process_oslaser(pfile)
@@ -206,9 +206,10 @@ def _process_mrsi_pfile(pfile):
     '''
     psd = pfile.hdr.rhi_psdname.decode('utf-8').lower()
 
-    if psd not in ('probe-p', 'probe-sl', 'slaser_cni'):
+    known_formats = ('probe-p', 'probe-sl', 'slaser_cni', 'presscsi')
+    if psd not in known_formats:
         raise UnsupportedPulseSequenceError(
-            f'Unrecognised sequence {psd}, psdname must be "probe-p", "probe-sl", or "slaser_cni".')
+            f"Unrecognised sequence {psd}, psdname must be in: {','.join(known_formats)}.")
 
     warn('The interpretation of pfile CSI data is poorly tested; rotations or transpositions of the'
          ' CSI grid could be present. Spec2nii currently lacks a complete set of CSI test data.'

spec2nii/GE/ge_read_pfile.py

@@ -178,7 +178,7 @@ def get_mapper(self):
 
         psd = self.hdr.rhi_psdname.decode('utf-8').lower()
 
-        if psd == 'probe-p':
+        if psd in ('probe-p', 'probe-s'):
             mapper = PfileMapper
         elif psd in ('oslaser', 'slaser_cni'):
             mapper = PfileMapperSlaser