add DICOM metadata details modal

web_backend.py

@@ -17,6 +17,7 @@ from urllib.parse import parse_qs, quote, unquote, urlparse
 os.environ.setdefault("MPLCONFIGDIR", "/tmp/head_ct_morph_matplotlib")
 
 import pydicom
+from pydicom.multival import MultiValue
 from PIL import Image
 
 from generate_head_extension_video import generate_video
@@ -187,6 +188,103 @@ def make_library_slice_preview(item_id, index):
     }
 
 
+def dicom_value(ds, name, fallback="-"):
+    value = getattr(ds, name, fallback)
+    if value in [None, ""]:
+        return fallback
+    if isinstance(value, (list, tuple, MultiValue)):
+        return " / ".join(str(item) for item in value)
+    return str(value)
+
+
+def dicom_date(value):
+    value = str(value or "")
+    if len(value) == 8 and value.isdigit():
+        return f"{value[0:4]}-{value[4:6]}-{value[6:8]}"
+    return value or "-"
+
+
+def dicom_time(value):
+    value = str(value or "")
+    if len(value) >= 6 and value[:6].isdigit():
+        return f"{value[0:2]}:{value[2:4]}:{value[4:6]}"
+    return value or "-"
+
+
+def make_library_info(item_id):
+    item = find_library_item(item_id)
+    if not item:
+        raise RuntimeError("影像库中没有找到该数据。")
+
+    dicom_files = sorted_dicom_files(item["dicomPath"])
+    if not dicom_files:
+        raise RuntimeError("该影像数据没有可读取的 .dcm 文件。")
+
+    first = pydicom.dcmread(str(dicom_files[0]), stop_before_pixels=True, force=True)
+    last = pydicom.dcmread(str(dicom_files[-1]), stop_before_pixels=True, force=True)
+    pixel_spacing = dicom_value(first, "PixelSpacing")
+    matrix = f"{dicom_value(first, 'Columns')} x {dicom_value(first, 'Rows')}"
+    instance_range = f"{dicom_value(first, 'InstanceNumber')} - {dicom_value(last, 'InstanceNumber')}"
+
+    return {
+        "id": item["id"],
+        "patientId": item["patientId"],
+        "fileCount": len(dicom_files),
+        "groups": [
+            {
+                "title": "患者信息",
+                "items": [
+                    {"label": "患者姓名", "value": dicom_value(first, "PatientName")},
+                    {"label": "患者 ID", "value": dicom_value(first, "PatientID")},
+                    {"label": "性别", "value": dicom_value(first, "PatientSex")},
+                    {"label": "年龄", "value": dicom_value(first, "PatientAge")},
+                ],
+            },
+            {
+                "title": "检查信息",
+                "items": [
+                    {"label": "检查日期", "value": dicom_date(getattr(first, "StudyDate", ""))},
+                    {"label": "检查时间", "value": dicom_time(getattr(first, "StudyTime", ""))},
+                    {"label": "检查描述", "value": dicom_value(first, "StudyDescription")},
+                    {"label": "检查号", "value": dicom_value(first, "AccessionNumber")},
+                    {"label": "机构", "value": dicom_value(first, "InstitutionName")},
+                ],
+            },
+            {
+                "title": "序列信息",
+                "items": [
+                    {"label": "模态", "value": dicom_value(first, "Modality")},
+                    {"label": "部位", "value": dicom_value(first, "BodyPartExamined")},
+                    {"label": "序列描述", "value": dicom_value(first, "SeriesDescription")},
+                    {"label": "序列号", "value": dicom_value(first, "SeriesNumber")},
+                    {"label": "制造商", "value": dicom_value(first, "Manufacturer")},
+                ],
+            },
+            {
+                "title": "图像参数",
+                "items": [
+                    {"label": "切片数", "value": str(len(dicom_files))},
+                    {"label": "Instance 范围", "value": instance_range},
+                    {"label": "矩阵", "value": matrix},
+                    {"label": "像素间距", "value": pixel_spacing},
+                    {"label": "层厚", "value": dicom_value(first, "SliceThickness")},
+                    {"label": "层间距", "value": dicom_value(first, "SpacingBetweenSlices")},
+                    {"label": "卷积核", "value": dicom_value(first, "ConvolutionKernel")},
+                ],
+            },
+            {
+                "title": "扫描参数",
+                "items": [
+                    {"label": "KVP", "value": dicom_value(first, "KVP")},
+                    {"label": "管电流", "value": dicom_value(first, "XRayTubeCurrent")},
+                    {"label": "曝光时间", "value": dicom_value(first, "ExposureTime")},
+                    {"label": "重建直径", "value": dicom_value(first, "ReconstructionDiameter")},
+                ],
+            },
+        ],
+    }
+
+
 def parse_multipart(headers, body):
     content_type = headers.get("content-type", "")
     message = BytesParser(policy=default).parsebytes(
@@ -418,6 +516,12 @@ class Handler(BaseHTTPRequestHandler):
             self.send_json(make_library_slice_preview(item_id, index))
             return
 
+        if parsed.path == "/api/library/info":
+            params = parse_qs(parsed.query)
+            item_id = params.get("id", [""])[0]
+            self.send_json(make_library_info(item_id))
+            return
+
         if parsed.path == "/api/job":
             params = parse_qs(parsed.query)
             job_id = params.get("id", [""])[0]