diff --git a/Modules/Filtering/LabelMap/test/itkStatisticsLabelMapFilterGTest.cxx b/Modules/Filtering/LabelMap/test/itkStatisticsLabelMapFilterGTest.cxx
index 5726b41a5e0..b7a75ad40da 100644
--- a/Modules/Filtering/LabelMap/test/itkStatisticsLabelMapFilterGTest.cxx
+++ b/Modules/Filtering/LabelMap/test/itkStatisticsLabelMapFilterGTest.cxx
@@ -162,6 +162,7 @@ class StatisticsLabelMapFixture : public ::testing::Test
 TEST_F(StatisticsLabelMapFixture, 2D_zero)
 {
   using Utils = FixtureUtilities<2, unsigned char>;
+  using namespace itk::GTest::TypedefsAndConstructors::Dimension2;
 
   auto image = Utils::CreateImage();
   auto labelImage = Utils ::CreateLabelImage();
@@ -190,21 +191,22 @@ TEST_F(StatisticsLabelMapFixture, 2D_zero)
 TEST_F(StatisticsLabelMapFixture, 2D_ones_with_outliers)
 {
   using Utils = FixtureUtilities<2, signed short>;
+  using namespace itk::GTest::TypedefsAndConstructors::Dimension2;
 
   auto             image = Utils::CreateImage();
   Utils::PixelType value = 1;
   image->FillBuffer(value);
 
   // Test with outliers outside the label.
-  image->SetPixel({ 0, 0 }, 32000);
-  image->SetPixel({ 0, 1 }, -32000);
+  image->SetPixel(IndexType{ 0, 0 }, 32000);
+  image->SetPixel(IndexType{ 0, 1 }, -32000);
 
 
   auto                  labelImage = Utils ::CreateLabelImage();
   Utils::LabelPixelType label = 1;
   labelImage->FillBuffer(label);
-  labelImage->SetPixel({ 0, 0 }, 0);
-  labelImage->SetPixel({ 0, 1 }, 0);
+  labelImage->SetPixel(IndexType{ 0, 0 }, 0);
+  labelImage->SetPixel(IndexType{ 0, 1 }, 0);
 
   Utils::LabelObjectType::ConstPointer labelObject = Utils::ComputeLabelObject(labelImage, image, label, 1 << 16);
 
@@ -225,21 +227,22 @@ TEST_F(StatisticsLabelMapFixture, 2D_ones_with_outliers)
 TEST_F(StatisticsLabelMapFixture, 2D_rand_with_outliers)
 {
   using Utils = FixtureUtilities<2, signed short>;
+  using namespace itk::GTest::TypedefsAndConstructors::Dimension2;
 
   auto image = Utils::CreateImageRandom(500, 0);
   auto labelImage = Utils ::CreateLabelImage();
 
   // Test with outliers outside the label.
-  image->SetPixel({ 0, 0 }, 32000);
-  image->SetPixel({ 0, 1 }, -2000);
+  image->SetPixel(IndexType{ 0, 0 }, 32000);
+  image->SetPixel(IndexType{ 0, 1 }, -2000);
   // Set min/max in label
-  image->SetPixel({ 0, 2 }, 0);
-  image->SetPixel({ 0, 3 }, 500);
+  image->SetPixel(IndexType{ 0, 2 }, 0);
+  image->SetPixel(IndexType{ 0, 3 }, 500);
 
   Utils::LabelPixelType label = 1;
   labelImage->FillBuffer(label);
-  labelImage->SetPixel({ 0, 0 }, 0);
-  labelImage->SetPixel({ 0, 1 }, 0);
+  labelImage->SetPixel(IndexType{ 0, 0 }, 0);
+  labelImage->SetPixel(IndexType{ 0, 1 }, 0);
 
 
   Utils::LabelObjectType::ConstPointer labelObject = Utils::ComputeLabelObject(labelImage, image, label, 1 << 16);
@@ -259,21 +262,22 @@ TEST_F(StatisticsLabelMapFixture, 2D_rand_with_outliers)
 TEST_F(StatisticsLabelMapFixture, 2D_even)
 {
   using Utils = FixtureUtilities<2, unsigned char>;
+  using namespace itk::GTest::TypedefsAndConstructors::Dimension2;
 
   auto image = Utils::CreateImage();
   auto labelImage = Utils ::CreateLabelImage();
 
   // Set label with two elements far apart, the median should be average
-  image->SetPixel({ 0, 0 }, 10);
-  image->SetPixel({ 0, 1 }, 100);
-  image->SetPixel({ 0, 2 }, 1);
-  image->SetPixel({ 0, 3 }, 200);
+  image->SetPixel(IndexType{ 0, 0 }, 10);
+  image->SetPixel(IndexType{ 0, 1 }, 100);
+  image->SetPixel(IndexType{ 0, 2 }, 1);
+  image->SetPixel(IndexType{ 0, 3 }, 200);
 
   Utils::LabelPixelType label = 1;
-  labelImage->SetPixel({ 0, 0 }, label);
-  labelImage->SetPixel({ 0, 1 }, label);
-  labelImage->SetPixel({ 0, 2 }, label);
-  labelImage->SetPixel({ 0, 3 }, label);
+  labelImage->SetPixel(IndexType{ 0, 0 }, label);
+  labelImage->SetPixel(IndexType{ 0, 1 }, label);
+  labelImage->SetPixel(IndexType{ 0, 2 }, label);
+  labelImage->SetPixel(IndexType{ 0, 3 }, label);
 
 
   Utils::LabelObjectType::ConstPointer labelObject = Utils::ComputeLabelObject(labelImage, image, label, 1 << 8);
@@ -296,19 +300,20 @@ TEST_F(StatisticsLabelMapFixture, 2D_even)
 TEST_F(StatisticsLabelMapFixture, 2D_three)
 {
   using Utils = FixtureUtilities<2, unsigned char>;
+  using namespace itk::GTest::TypedefsAndConstructors::Dimension2;
 
   auto image = Utils::CreateImage();
   auto labelImage = Utils ::CreateLabelImage();
 
   // Set label with two elements far apart, the median should be average
-  image->SetPixel({ 0, 0 }, 1);
-  image->SetPixel({ 0, 1 }, 3);
-  image->SetPixel({ 0, 2 }, 10);
+  image->SetPixel(IndexType{ 0, 0 }, 1);
+  image->SetPixel(IndexType{ 0, 1 }, 3);
+  image->SetPixel(IndexType{ 0, 2 }, 10);
 
   Utils::LabelPixelType label = 1;
-  labelImage->SetPixel({ 0, 0 }, label);
-  labelImage->SetPixel({ 0, 1 }, label);
-  labelImage->SetPixel({ 0, 2 }, label);
+  labelImage->SetPixel(IndexType{ 0, 0 }, label);
+  labelImage->SetPixel(IndexType{ 0, 1 }, label);
+  labelImage->SetPixel(IndexType{ 0, 2 }, label);
 
 
   Utils::LabelObjectType::ConstPointer labelObject = Utils::ComputeLabelObject(labelImage, image, label, 1 << 8);