Update app.py

app.py

@@ -133,7 +133,6 @@ class DicomAnalyzer:
         except Exception as e:
             print(f"Error loading DICOM file: {str(e)}")
             return None, f"Error loading DICOM file: {str(e)}"
-
     def normalize_image(self, image):
         try:
             normalized = cv2.normalize(
@@ -187,6 +186,7 @@ class DicomAnalyzer:
         except Exception as e:
             print(f"Error handling keyboard input: {str(e)}")
             return self.display_image
+
     def update_display(self):
         try:
             if self.original_display is None:
@@ -319,6 +319,35 @@ class DicomAnalyzer:
         except Exception as e:
             print(f"Error analyzing ROI: {str(e)}")
             return self.display_image, f"Error analyzing ROI: {str(e)}"
+    def add_formulas_to_template(self, ws, row_pair, col_group, red_font):
+        """
+        Inserts SNR (first row) and CNR (second row) formulas with IFERROR.
+        """
+        try:
+            base_col = col_group[1]  # Mean column
+            std_col = col_group[2]   # StdDev column
+            
+            row1, row2 = row_pair
+            
+            # SNR formula
+            formula1 = f"=IFERROR({base_col}{row1}/{std_col}{row1},\"\")"
+            formula_col = get_column_letter(column_index_from_string(col_group[-1]) + 1)
+            cell1 = ws[f"{formula_col}{row1}"]
+            cell1.value = formula1
+            cell1.font = red_font
+            cell1.alignment = openpyxl.styles.Alignment(horizontal='center')
+            
+            # CNR formula
+            formula2 = f"=IFERROR(({base_col}{row1}-{base_col}{row2})/{std_col}{row2},\"\")"
+            cell2 = ws[f"{formula_col}{row2}"]
+            cell2.value = formula2
+            cell2.font = red_font
+            cell2.alignment = openpyxl.styles.Alignment(horizontal='center')
+            
+            logger.debug(f"Added formulas for rows {row1},{row2} in column {formula_col}")
+        except Exception as e:
+            logger.error(f"Error adding formulas: {str(e)}")
+
     def save_formatted_results(self, output_path):
         try:
             if not self.results:
@@ -396,7 +425,6 @@ class DicomAnalyzer:
                         cell = ws[f"{col}{row}"]
                         if cell.value is not None:
                             cell.alignment = center_alignment
-
             # StdDev Averages
             current_row = 32
             stddev_header = ws.cell(row=current_row, column=1, value="StdDev Averages")
@@ -753,4 +781,4 @@ if __name__ == "__main__":
         print(f"Error launching application: {str(e)}")
         logger.error(f"Error launching application: {str(e)}")
         logger.error(traceback.format_exc())
-        raise e
+        raise e