diff --git a/input/fsh/capabilitystatements/CapabilityStatement-1x.fsh b/input/fsh/capabilitystatements/CapabilityStatement-1x.fsh
index bdad913..32d5b73 100644
--- a/input/fsh/capabilitystatements/CapabilityStatement-1x.fsh
+++ b/input/fsh/capabilitystatements/CapabilityStatement-1x.fsh
@@ -186,7 +186,6 @@ Usage: #definition
 * insert SupportSearchParam(radionuclide-total-dose, https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/SearchParameter/mii-sp-bildgebung-imaging-study-series-radionuclide-total-dose, #quantity, #SHALL)
 * insert SupportSearchParam(radionuclide-half-life, https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/SearchParameter/mii-sp-bildgebung-imaging-study-series-radionuclide-half-life, #quantity, #SHALL)
 * insert SupportSearchParam(series-type, https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/SearchParameter/mii-sp-bildgebung-imaging-study-series-series-type, #string, #SHALL)
-* insert SupportSearchParam(energy-window-mean, https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/SearchParameter/mii-sp-bildgebung-imaging-study-series-energy-window-mean, #quantity, #SHALL)
 //Extension Contrast
 * insert SupportSearchParam(contrast-bolus, https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/SearchParameter/mii-sp-bildgebung-imaging-study-series-contrast-bolus, #token, #SHALL)
 * insert SupportSearchParam(contrast-bolus-details, https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/SearchParameter/mii-sp-bildgebung-imaging-study-series-contrast-bolus-details, #reference, #SHALL)
diff --git a/input/fsh/extensions/Extension-Modality-NM.fsh b/input/fsh/extensions/Extension-Modality-NM.fsh
index ead3639..e80f9dd 100644
--- a/input/fsh/extensions/Extension-Modality-NM.fsh
+++ b/input/fsh/extensions/Extension-Modality-NM.fsh
@@ -42,8 +42,4 @@ Description: "Die Extension ermöglicht es die Ressourcen und Machbarkeitsanalys
 * extension[radionuclideHalfLife].value[x] only SimpleQuantity
 * extension[radionuclideHalfLife].valueQuantity.unit = "Seconds" 
 * extension[radionuclideHalfLife].valueQuantity.system = "http://unitsofmeasure.org"
-* extension[radionuclideHalfLife].valueQuantity.code = #s
-* extension[energyWindowMean].value[x] only SimpleQuantity
-* extension[energyWindowMean].valueQuantity.unit = "kiloelectronvolt"
-* extension[energyWindowMean].valueQuantity.system = "http://unitsofmeasure.org"
-* extension[energyWindowMean].valueQuantity.code = #keV
+* extension[radionuclideHalfLife].valueQuantity.code = #s
\ No newline at end of file
diff --git a/input/fsh/searchparameters/SearchParameter.fsh b/input/fsh/searchparameters/SearchParameter.fsh
index 2ddfdd7..c7151ef 100644
--- a/input/fsh/searchparameters/SearchParameter.fsh
+++ b/input/fsh/searchparameters/SearchParameter.fsh
@@ -700,27 +700,6 @@ Usage: #definition
 * modifier[+] = #exact
 * modifier[+] = #missing
 
-Instance: mii-sp-bildgebung-imaging-study-series-energy-window-mean
-InstanceOf: SearchParameter
-Usage: #definition
-* url = "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/SearchParameter/mii-sp-bildgebung-imaging-study-series-energy-window-mean"
-* insert SP_Publisher
-* insert Version
-* name = "MII_SP_Bildgebung_Imaging_Study_Series_Energy_Window_Mean"
-* status = #active
-* experimental = false
-* date = "2024-08-30"
-* description = "Suchparameter für ImagingStudy.series.extension.energyWindowMean"
-* code = #energy-window-mean
-* base = #ImagingStudy
-* type = #quantity
-* expression = "ImagingStudy.series.extension('https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-nm').extension('energyWindowMean').value"
-* comparator[+] = #eq 
-* comparator[+] = #gt 
-* comparator[+] = #lt
-* comparator[+] = #ge 
-* comparator[+] = #le
-
 Instance: mii-sp-bildgebung-imaging-study-series-contrast-bolus
 InstanceOf: SearchParameter
 Usage: #definition