diff --git a/libsrc/Helper.cpp b/libsrc/Helper.cpp
index f2ee32f2..3f8ff136 100644
--- a/libsrc/Helper.cpp
+++ b/libsrc/Helper.cpp
@@ -103,9 +103,32 @@ namespace dcmqi {
 
 
   string Helper::floatToStrScientific(float f) {
+    string formatted_f;
+    /*    
+     - mantissa sign (1)
+     - mantissa leading number (1)
+     - dot (1)
+     - mantissa after the dot (8)
+     - E (1)
+     - exponent sign (1)
+     - exponent (2 OR 3 (Win))
+    */
+
+    ostringstream sstream;
+    sstream << setprecision(8) << scientific << f;
+    formatted_f = sstream.str();
+        
+    // somehow this was resulting in more than 16 characters in local tests and on CI
+    /*
     ostringstream sstream;
-    sstream << scientific << f;
-    return sstream.str();
+    sstream.imbue(std::locale::classic());
+    sstream << setprecision(14) << f;
+    formatted_f = sstream.str();
+    cout << "Formatted float: " << formatted_f << endl;
+    cout << "Size: " << formatted_f.size() << endl;
+    */
+
+    return formatted_f;
   }
 
   void Helper::checkValidityOfFirstSrcImage(DcmSegmentation *segdoc) {
diff --git a/libsrc/ImageSEGConverter.cpp b/libsrc/ImageSEGConverter.cpp
index 1371d708..237ed2e3 100644
--- a/libsrc/ImageSEGConverter.cpp
+++ b/libsrc/ImageSEGConverter.cpp
@@ -80,15 +80,14 @@ namespace dcmqi {
     {
       FGPixelMeasures *pixmsr = new FGPixelMeasures();
 
-      ShortImageType::SpacingType labelSpacing = segmentations[0]->GetSpacing();
+      ShortImageType::SpacingType labelSpacing = segmentations[0]->GetSpacing();      
       ostringstream spacingSStream;
-      spacingSStream << scientific << labelSpacing[0] << "\\" << labelSpacing[1];
+      spacingSStream << Helper::floatToStrScientific(labelSpacing[0]) << "\\" << Helper::floatToStrScientific(labelSpacing[1]);
       CHECK_COND(pixmsr->setPixelSpacing(spacingSStream.str().c_str()));
 
-      spacingSStream.clear(); spacingSStream.str("");
-      spacingSStream << scientific << labelSpacing[2];
-      CHECK_COND(pixmsr->setSpacingBetweenSlices(spacingSStream.str().c_str()));
-      CHECK_COND(pixmsr->setSliceThickness(spacingSStream.str().c_str()));
+      string sliceThicknessStr = Helper::floatToStrScientific(labelSpacing[2]);
+      CHECK_COND(pixmsr->setSpacingBetweenSlices(sliceThicknessStr.c_str()));
+      CHECK_COND(pixmsr->setSliceThickness(sliceThicknessStr.c_str()));
       CHECK_COND(segdoc->addForAllFrames(*pixmsr));
       delete pixmsr;
     }
diff --git a/libsrc/ParaMapConverter.cpp b/libsrc/ParaMapConverter.cpp
index f1acd235..32b06809 100644
--- a/libsrc/ParaMapConverter.cpp
+++ b/libsrc/ParaMapConverter.cpp
@@ -4,6 +4,7 @@
 #include <itkCastImageFilter.h>
 
 // DCMQI includes
+#include "dcmqi/Helper.h"
 #include "dcmqi/ParaMapConverter.h"
 #include "dcmqi/ImageSEGConverter.h"
 
@@ -77,15 +78,14 @@ namespace dcmqi {
     {
       FGPixelMeasures *pixmsr = new FGPixelMeasures();
 
-      FloatImageType::SpacingType labelSpacing = parametricMapImage->GetSpacing();
+      FloatImageType::SpacingType pmSpacing = parametricMapImage->GetSpacing();
       ostringstream spacingSStream;
-      spacingSStream << scientific << labelSpacing[0] << "\\" << labelSpacing[1];
+      spacingSStream << Helper::floatToStrScientific(pmSpacing[0]) << "\\" << Helper::floatToStrScientific(pmSpacing[1]);
       CHECK_COND(pixmsr->setPixelSpacing(spacingSStream.str().c_str()));
 
-      spacingSStream.clear(); spacingSStream.str("");
-      spacingSStream << scientific << labelSpacing[2];
-      CHECK_COND(pixmsr->setSpacingBetweenSlices(spacingSStream.str().c_str()));
-      CHECK_COND(pixmsr->setSliceThickness(spacingSStream.str().c_str()));
+      string sliceThicknessStr = Helper::floatToStrScientific(pmSpacing[2]);
+      CHECK_COND(pixmsr->setSpacingBetweenSlices(sliceThicknessStr.c_str()));
+      CHECK_COND(pixmsr->setSliceThickness(sliceThicknessStr.c_str()));
       CHECK_COND(pMapDoc->addForAllFrames(*pixmsr));
     }
 
@@ -252,7 +252,7 @@ namespace dcmqi {
       slice2derimg = getSliceMapForSegmentation2DerivationImage(dcmDatasets, cast->GetOutput());
       cout << "Mapping from the ITK image slices to the DICOM instances in the input list" << endl;
       for(size_t i=0;i<slice2derimg.size();i++){
-        cout << "  Slice " << i << ": ";
+        //cout << "  Slice " << i << ": ";
         for(size_t j=0;j<slice2derimg[i].size();j++){
           cout << slice2derimg[i][j] << " ";
           hasDerivationImages = true;
@@ -399,7 +399,7 @@ namespace dcmqi {
         DPMParametricMapIOD::FramesType frames = pMapDoc->getFrames();
         result = OFget<DPMParametricMapIOD::Frames<FloatPixelType> >(&frames)->addFrame(&*data.begin(), frameSize, perFrameFGs);
 
-        cout << "Frame " << sliceNumber << " added" << endl;
+        //cout << "Frame " << sliceNumber << " added" << endl;
       }
 
       // remove derivation image FG from the per-frame FGs, only if applicable!