diff --git a/modules/nf-scil/segmentation/fastseg/tests/main.nf.test b/modules/nf-scil/segmentation/fastseg/tests/main.nf.test
index a081ce87..9114b5e9 100644
--- a/modules/nf-scil/segmentation/fastseg/tests/main.nf.test
+++ b/modules/nf-scil/segmentation/fastseg/tests/main.nf.test
@@ -20,7 +20,7 @@ nextflow_process {
             script "../../../../../subworkflows/nf-scil/load_test_data/main.nf"
             process {
                 """
-                input[0] = Channel.from( [ "heavy.zip" ] )
+                input[0] = Channel.from( [ "T1w.zip" ] )
                 input[1] = "test.load-test-data"
                 """
             }
@@ -34,7 +34,7 @@ nextflow_process {
                 input[0] = LOAD_DATA.out.test_data_directory.map{
                     test_data_directory -> [
                         [ id:'test', single_end:false ], // meta map
-                        file("\${test_data_directory}/anat/anat_image.nii.gz", checkIfExists: true,),
+                        file("\${test_data_directory}/T1w.nii.gz", checkIfExists: true,),
                         []
                     ]
                 }
@@ -45,7 +45,15 @@ nextflow_process {
         then {
             assertAll(
                 { assert process.success },
-                { assert snapshot(process.out).match() }
+                { assert snapshot(
+                    niftiMD5SUM(process.out.wm_mask.get(0).get(1)),
+                    niftiMD5SUM(process.out.gm_mask.get(0).get(1)),
+                    niftiMD5SUM(process.out.csf_mask.get(0).get(1)),
+                    niftiMD5SUM(process.out.wm_map.get(0).get(1)),
+                    niftiMD5SUM(process.out.gm_map.get(0).get(1)),
+                    niftiMD5SUM(process.out.csf_map.get(0).get(1)),
+                    process.out.versions
+                ).match() }
             )
         }
     }
@@ -56,8 +64,8 @@ nextflow_process {
                 input[0] = LOAD_DATA.out.test_data_directory.map{
                     test_data_directory -> [
                         [ id:'test', single_end:false ], // meta map
-                        file("\${test_data_directory}/anat/anat_image.nii.gz", checkIfExists: true,),
-                        file("\${test_data_directory}/anat/anat_mask.nii.gz", checkIfExists: true)
+                        file("\${test_data_directory}/T1w.nii.gz", checkIfExists: true,),
+                        file("\${test_data_directory}/T1w_mask.nii.gz", checkIfExists: true)
                     ]
                 }
                 """
@@ -67,7 +75,15 @@ nextflow_process {
         then {
             assertAll(
                 { assert process.success },
-                { assert snapshot(process.out).match() }
+                { assert snapshot(
+                    niftiMD5SUM(process.out.wm_mask.get(0).get(1)),
+                    niftiMD5SUM(process.out.gm_mask.get(0).get(1)),
+                    niftiMD5SUM(process.out.csf_mask.get(0).get(1)),
+                    niftiMD5SUM(process.out.wm_map.get(0).get(1)),
+                    niftiMD5SUM(process.out.gm_map.get(0).get(1)),
+                    niftiMD5SUM(process.out.csf_map.get(0).get(1)),
+                    process.out.versions
+                ).match() }
             )
         }
     }
diff --git a/modules/nf-scil/segmentation/fastseg/tests/main.nf.test.snap b/modules/nf-scil/segmentation/fastseg/tests/main.nf.test.snap
index 7ae441af..7778861a 100644
--- a/modules/nf-scil/segmentation/fastseg/tests/main.nf.test.snap
+++ b/modules/nf-scil/segmentation/fastseg/tests/main.nf.test.snap
@@ -1,252 +1,38 @@
 {
     "segmentation - fastseg - lesion": {
         "content": [
-            {
-                "0": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_wm.nii.gz:md5,2b2ced42fcf870d68ff44bf90d2701d4"
-                    ]
-                ],
-                "1": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_gm.nii.gz:md5,39396421c6d1d32ea7943a5ec7a49dce"
-                    ]
-                ],
-                "2": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_csf.nii.gz:md5,d0fbc088059f17faff38fbcd33257d27"
-                    ]
-                ],
-                "3": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_wm.nii.gz:md5,1d5a9655d4e3c832b14c83e9424b00fc"
-                    ]
-                ],
-                "4": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_gm.nii.gz:md5,f7e51eb14af645c687db5d2c6a4f5bf4"
-                    ]
-                ],
-                "5": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_csf.nii.gz:md5,9c14d8f70e69d641d9c214d0d52b3663"
-                    ]
-                ],
-                "6": [
-                    "versions.yml:md5,d42da2620c5aa82292375b0f9d8d7092"
-                ],
-                "csf_map": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_csf.nii.gz:md5,9c14d8f70e69d641d9c214d0d52b3663"
-                    ]
-                ],
-                "csf_mask": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_csf.nii.gz:md5,d0fbc088059f17faff38fbcd33257d27"
-                    ]
-                ],
-                "gm_map": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_gm.nii.gz:md5,f7e51eb14af645c687db5d2c6a4f5bf4"
-                    ]
-                ],
-                "gm_mask": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_gm.nii.gz:md5,39396421c6d1d32ea7943a5ec7a49dce"
-                    ]
-                ],
-                "versions": [
-                    "versions.yml:md5,d42da2620c5aa82292375b0f9d8d7092"
-                ],
-                "wm_map": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_wm.nii.gz:md5,1d5a9655d4e3c832b14c83e9424b00fc"
-                    ]
-                ],
-                "wm_mask": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_wm.nii.gz:md5,2b2ced42fcf870d68ff44bf90d2701d4"
-                    ]
-                ]
-            }
+            "test__mask_wm.nii.gz:md5:header,18e02970ee42367e0ee9f81b36cde160,data,e4d00ba5559d32119050e6afe77b627c",
+            "test__mask_gm.nii.gz:md5:header,cb2d88714675fc7d8c450de4db5227c6,data,d713974dbe87760182112e10f96a7f82",
+            "test__mask_csf.nii.gz:md5:header,cb2d88714675fc7d8c450de4db5227c6,data,29599fab55e3ee75318cef36563684a4",
+            "test__map_wm.nii.gz:md5:header,58dc3623694060dace951ba8073d5e01,data,62a268dbc74814d62ed9f9596b5a72e5",
+            "test__map_gm.nii.gz:md5:header,58dc3623694060dace951ba8073d5e01,data,420e7664f81a5899f7007f71c08f28d8",
+            "test__map_csf.nii.gz:md5:header,58dc3623694060dace951ba8073d5e01,data,2bde307c6dae36a5fc00eba7a2ca7933",
+            [
+                "versions.yml:md5,d42da2620c5aa82292375b0f9d8d7092"
+            ]
         ],
         "meta": {
-            "nf-test": "0.8.4",
-            "nextflow": "23.10.1"
+            "nf-test": "0.9.0-rc1",
+            "nextflow": "24.04.4"
         },
-        "timestamp": "2024-06-17T13:59:58.264241"
+        "timestamp": "2024-09-04T20:12:08.928978"
     },
     "segmentation - fastseg": {
         "content": [
-            {
-                "0": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_wm.nii.gz:md5,f849e268007a747714e342162f13f631"
-                    ]
-                ],
-                "1": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_gm.nii.gz:md5,39396421c6d1d32ea7943a5ec7a49dce"
-                    ]
-                ],
-                "2": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_csf.nii.gz:md5,d0fbc088059f17faff38fbcd33257d27"
-                    ]
-                ],
-                "3": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_wm.nii.gz:md5,1d5a9655d4e3c832b14c83e9424b00fc"
-                    ]
-                ],
-                "4": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_gm.nii.gz:md5,f7e51eb14af645c687db5d2c6a4f5bf4"
-                    ]
-                ],
-                "5": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_csf.nii.gz:md5,9c14d8f70e69d641d9c214d0d52b3663"
-                    ]
-                ],
-                "6": [
-                    "versions.yml:md5,d42da2620c5aa82292375b0f9d8d7092"
-                ],
-                "csf_map": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_csf.nii.gz:md5,9c14d8f70e69d641d9c214d0d52b3663"
-                    ]
-                ],
-                "csf_mask": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_csf.nii.gz:md5,d0fbc088059f17faff38fbcd33257d27"
-                    ]
-                ],
-                "gm_map": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_gm.nii.gz:md5,f7e51eb14af645c687db5d2c6a4f5bf4"
-                    ]
-                ],
-                "gm_mask": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_gm.nii.gz:md5,39396421c6d1d32ea7943a5ec7a49dce"
-                    ]
-                ],
-                "versions": [
-                    "versions.yml:md5,d42da2620c5aa82292375b0f9d8d7092"
-                ],
-                "wm_map": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__map_wm.nii.gz:md5,1d5a9655d4e3c832b14c83e9424b00fc"
-                    ]
-                ],
-                "wm_mask": [
-                    [
-                        {
-                            "id": "test",
-                            "single_end": false
-                        },
-                        "test__mask_wm.nii.gz:md5,f849e268007a747714e342162f13f631"
-                    ]
-                ]
-            }
+            "test__mask_wm.nii.gz:md5:header,cb2d88714675fc7d8c450de4db5227c6,data,08b5c8665f0a07c182eb63f045d01855",
+            "test__mask_gm.nii.gz:md5:header,cb2d88714675fc7d8c450de4db5227c6,data,d713974dbe87760182112e10f96a7f82",
+            "test__mask_csf.nii.gz:md5:header,cb2d88714675fc7d8c450de4db5227c6,data,29599fab55e3ee75318cef36563684a4",
+            "test__map_wm.nii.gz:md5:header,58dc3623694060dace951ba8073d5e01,data,62a268dbc74814d62ed9f9596b5a72e5",
+            "test__map_gm.nii.gz:md5:header,58dc3623694060dace951ba8073d5e01,data,420e7664f81a5899f7007f71c08f28d8",
+            "test__map_csf.nii.gz:md5:header,58dc3623694060dace951ba8073d5e01,data,2bde307c6dae36a5fc00eba7a2ca7933",
+            [
+                "versions.yml:md5,d42da2620c5aa82292375b0f9d8d7092"
+            ]
         ],
         "meta": {
-            "nf-test": "0.8.4",
-            "nextflow": "23.10.1"
+            "nf-test": "0.9.0-rc1",
+            "nextflow": "24.04.4"
         },
-        "timestamp": "2024-06-13T19:52:04.291343"
+        "timestamp": "2024-09-04T20:03:24.730234"
     }
 }
\ No newline at end of file
diff --git a/tests/config/test_data.json b/tests/config/test_data.json
index f52c60d8..b5201265 100644
--- a/tests/config/test_data.json
+++ b/tests/config/test_data.json
@@ -48,7 +48,7 @@
     "DWIss300-dir8.zip": "ef1335775c9fbf11452c71e01b097282",
     "DWIss1000-dir32.zip": "c72fd590a3f400278299a068eeffd1d0",
     "DWIss2000-dir60.zip": "9ad7ccb4e30b39c47f374018db2e6424",
-    "T1w.zip": "10e27bb2ddd4d01be968a93b2166096c",
+    "T1w.zip": "8e9cf2beec4595d407732152a19589f5",
     "dti.zip": "ba866c59fc4d984f626691a6b941fc32",
     "responses.zip": "1a5b862b91c72740bcce0431a1f9254a",
     "segmentation.zip": "ab51be6d142ad1a8e30ffb964447d010"