diff --git a/models/sql/models/baseDicom.model.js b/models/sql/models/baseDicom.model.js
new file mode 100644
index 00000000..19243f84
--- /dev/null
+++ b/models/sql/models/baseDicom.model.js
@@ -0,0 +1,27 @@
+const { raccoonConfig } = require("@root/config-class");
+const { Model } = require("sequelize");
+
+let Common;
+if (raccoonConfig.dicomDimseConfig.enableDimse) {
+    require("@models/DICOM/dcm4che/java-instance");
+    Common = require("@java-wrapper/org/github/chinlinlee/dcm777/net/common/Common").Common;
+}
+class BaseDicomModel extends Model {
+    async getAttributes() {
+        let obj = this.toJSON();
+        let jsonStr = JSON.stringify(obj.json);
+        return await Common.getAttributesFromJsonString(jsonStr);
+    }
+
+    async incrementDeleteStatus() {
+        let deleteStatus = this.getDataValue("deleteStatus");
+        this.setDataValue("deleteStatus", deleteStatus + 1);
+        await this.save();
+    }
+
+    toDicomJson() {
+        return this.json;
+    }
+};
+
+module.exports.BaseDicomModel = BaseDicomModel;
\ No newline at end of file
diff --git a/models/sql/models/instance.model.js b/models/sql/models/instance.model.js
index 251bf99f..11711d46 100644
--- a/models/sql/models/instance.model.js
+++ b/models/sql/models/instance.model.js
@@ -9,19 +9,9 @@ const { dictionary } = require("@models/DICOM/dicom-tags-dic");
 const { getStoreDicomFullPath } = require("@models/mongodb/service");
 const { logger } = require("@root/utils/logs/log");
 const { raccoonConfig } = require("@root/config-class");
+const { BaseDicomModel } = require("./baseDicom.model");
 
-let Common;
-if (raccoonConfig.dicomDimseConfig.enableDimse) {
-    require("@models/DICOM/dcm4che/java-instance");
-    Common = require("@java-wrapper/org/github/chinlinlee/dcm777/net/common/Common").Common;
-}
-
-class InstanceModel extends Model {
-    async incrementDeleteStatus() {
-        let deleteStatus = this.getDataValue("deleteStatus");
-        this.setDataValue("deleteStatus", deleteStatus + 1);
-        await this.save();
-    }
+class InstanceModel extends BaseDicomModel {
 
     async deleteInstance() {
         let instancePath = this.getDataValue("instancePath");
@@ -247,11 +237,4 @@ InstanceModel.getInstanceOfMedianIndex = async function (query) {
     return instance;
 };
 
-InstanceModel.prototype.getAttributes = async function () {
-    let seriesObj = this.toJSON();
-
-    let jsonStr = JSON.stringify(seriesObj.json);
-    return await Common.getAttributesFromJsonString(jsonStr);
-};
-
 module.exports.InstanceModel = InstanceModel;
diff --git a/models/sql/models/patient.model.js b/models/sql/models/patient.model.js
index 32bb66c5..a6d54bc2 100644
--- a/models/sql/models/patient.model.js
+++ b/models/sql/models/patient.model.js
@@ -3,14 +3,9 @@ const sequelizeInstance = require("@models/sql/instance");
 const { vrTypeMapping } = require("../vrTypeMapping");
 const { PatientQueryBuilder } = require("@root/api-sql/dicom-web/controller/QIDO-RS/service/patientQueryBuilder");
 const { raccoonConfig } = require("@root/config-class");
+const { BaseDicomModel } = require("./baseDicom.model");
 
-let Common;
-if (raccoonConfig.dicomDimseConfig.enableDimse) {
-    require("@models/DICOM/dcm4che/java-instance");
-    Common = require("@java-wrapper/org/github/chinlinlee/dcm777/net/common/Common").Common;
-}
-
-class PatientModel extends Model { 
+class PatientModel extends BaseDicomModel { 
     static async updateOrCreatePatient(patient) {
         /** @type {PatientModel | null} */
         const { PatientPersistentObject } = require("../po/patient.po");
@@ -19,16 +14,6 @@ class PatientModel extends Model {
 
         return bringPatient;
     }
-
-    async incrementDeleteStatus() {
-        let deleteStatus = this.getDataValue("deleteStatus");
-        this.setDataValue("deleteStatus", deleteStatus + 1);
-        await this.save();
-    }
-
-    toDicomJson() {
-        return this.json;
-    }
 };
 
 PatientModel.init({
@@ -95,11 +80,4 @@ PatientModel.getDicomJson = async function (queryOptions) {
     }));
 };
 
-PatientModel.prototype.getAttributes = async function () {
-    let patientObj = this.toJSON();
-
-    let jsonStr = JSON.stringify(patientObj.json);
-    return await Common.getAttributesFromJsonString(jsonStr);
-};
-
 module.exports.PatientModel = PatientModel;
diff --git a/models/sql/models/series.model.js b/models/sql/models/series.model.js
index fcb74252..406d0424 100644
--- a/models/sql/models/series.model.js
+++ b/models/sql/models/series.model.js
@@ -9,24 +9,13 @@ const { dictionary } = require("@models/DICOM/dicom-tags-dic");
 const { getStoreDicomFullPathGroup } = require("@models/mongodb/service");
 const { logger } = require("@root/utils/logs/log");
 const { raccoonConfig } = require("@root/config-class");
+const { BaseDicomModel } = require("./baseDicom.model");
 
-let Common;
-if (raccoonConfig.dicomDimseConfig.enableDimse) {
-    require("@models/DICOM/dcm4che/java-instance");
-    Common = require("@java-wrapper/org/github/chinlinlee/dcm777/net/common/Common").Common;
-}
-
-class SeriesModel extends Model {
+class SeriesModel extends BaseDicomModel {
     getSeriesPath() {
         return this.getDataValue("seriesPath");
     }
 
-    async incrementDeleteStatus() {
-        let deleteStatus = this.getDataValue("deleteStatus");
-        this.setDataValue("deleteStatus", deleteStatus + 1);
-        await this.save();
-    }
-
     async deleteSeriesFolder() {
         let seriesPath = this.getDataValue("seriesPath");
         logger.warn("Permanently delete series folder: " + seriesPath);
@@ -175,11 +164,4 @@ SeriesModel.getPathGroupOfInstances = async function(iParam) {
     }
 };
 
-SeriesModel.prototype.getAttributes = async function () {
-    let seriesObj = this.toJSON();
-
-    let jsonStr = JSON.stringify(seriesObj.json);
-    return await Common.getAttributesFromJsonString(jsonStr);
-};
-
 module.exports.SeriesModel = SeriesModel;
diff --git a/models/sql/models/study.model.js b/models/sql/models/study.model.js
index 62c623d1..1478f0dd 100644
--- a/models/sql/models/study.model.js
+++ b/models/sql/models/study.model.js
@@ -11,14 +11,9 @@ const { dictionary } = require("@models/DICOM/dicom-tags-dic");
 const { getStoreDicomFullPathGroup } = require("@models/mongodb/service");
 const { logger } = require("@root/utils/logs/log");
 const { raccoonConfig } = require("@root/config-class");
+const { BaseDicomModel } = require("./baseDicom.model");
 
-let Common;
-if (raccoonConfig.dicomDimseConfig.enableDimse) {
-    require("@models/DICOM/dcm4che/java-instance");
-    Common = require("@java-wrapper/org/github/chinlinlee/dcm777/net/common/Common").Common;
-}
-
-class StudyModel extends Model {
+class StudyModel extends BaseDicomModel {
     async getNumberOfStudyRelatedSeries() {
         let count = await SeriesModel.count({
             where: {
@@ -37,12 +32,6 @@ class StudyModel extends Model {
         return count;
     }
 
-    async incrementDeleteStatus() {
-        let deleteStatus = this.getDataValue("deleteStatus");
-        this.setDataValue("deleteStatus", deleteStatus + 1);
-        await this.save();
-    }
-
     async deleteStudyFolder() {
         let studyPath = this.getDataValue("studyPath");
         logger.warn("Permanently delete study folder: " + studyPath);
@@ -218,11 +207,4 @@ StudyModel.getPathGroupOfInstances = async function (iParam) {
     }
 };
 
-StudyModel.prototype.getAttributes = async function () {
-    let studyObj = this.toJSON();
-
-    let jsonStr = JSON.stringify(studyObj.json);
-    return await Common.getAttributesFromJsonString(jsonStr);
-};
-
 module.exports.StudyModel = StudyModel;