diff --git a/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalLiveView.kt b/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalLiveView.kt
index 8567545..b4415ef 100644
--- a/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalLiveView.kt
+++ b/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalLiveView.kt
@@ -81,6 +81,17 @@ fun ClinicalLiveView(appState: AppState) {
     // V4.1 wall detection — 채널별 ant/post peak 표시용 (사내 테스트 가시화 요청)
     val v41 = remember { com.medithings.vesiscan.walldetect.V41Detector() }
     var channelWalls by remember { mutableStateOf<List<Pair<Int, Int>?>>(List(6) { null }) }
+    // BV 실시간 표시 — cycle 마다 3 가지 method 병행 계산 (2026-07-15 사용자 요청).
+    //   V41 = SphereFit (Method C)
+    //   FRUSTUM = legacy analyzer walls + estimateBladderVolume6ch (Tanaka frustum)
+    //   METHOD_D = Method D walls + apply_cross + estimateBladderVolume6ch (임상 Python 1:1)
+    var bvV41 by remember { mutableStateOf<Double?>(null) }
+    var bvFrustum by remember { mutableStateOf<Double?>(null) }
+    var bvMethodD by remember { mutableStateOf<Double?>(null) }
+    // 사용자가 chip 으로 선택한 표시 method (GreenZoneConstants.bvMethod 와 동기).
+    var selectedBvMethod by remember {
+        mutableStateOf(com.medithings.vesiscan.managers.GreenZoneConstants.bvMethod)
+    }
 
     DisposableEffect(Unit) {
         bleManager.piezoCollector.onMultiChannelComplete = { channels ->
@@ -109,6 +120,24 @@ fun ClinicalLiveView(appState: AppState) {
                     val a = r?.antIdx; val p = r?.postIdx
                     if (a != null && p != null) Pair(a, p) else null
                 }
+                // BV[V41] = SphereFit 결과 (V4.1 detector 가 이미 계산).
+                bvV41 = result.summary.bvDispatch?.bvMl?.toDouble()
+                // BV[FRUSTUM] = V4.1 walls 를 frustum 알고리즘에 통과.
+                bvFrustum = com.medithings.vesiscan.managers.estimateBladderVolume6ch(channelWalls)
+                    ?.volumeMl?.takeIf { it.isFinite() && it > 0 }
+                // BV[METHOD_D] = MethodD walls (apply_cross=true) + frustum.
+                val signalsD = (0..5).map { ch ->
+                    channels.find { it.channel == ch }?.buffer?.let { buf ->
+                        DoubleArray(buf.size) { buf[it].toDouble() }
+                    } ?: DoubleArray(100)
+                }
+                val mdResults = com.medithings.vesiscan.walldetect.MethodDRunner
+                    .detectMultichannel(signalsD, applyCross = true)
+                val mdWalls: List<Pair<Int, Int>?> = mdResults.map { r ->
+                    r?.let { Pair(it.ant, it.post) }
+                }
+                bvMethodD = com.medithings.vesiscan.managers.estimateBladderVolume6ch(mdWalls)
+                    ?.volumeMl?.takeIf { it.isFinite() && it > 0 }
             }
         }
         bleManager.imuCollector.onComplete = { imuSamples ->
@@ -181,6 +210,59 @@ fun ClinicalLiveView(appState: AppState) {
 
         Spacer(modifier = Modifier.height(8.dp))
 
+        // ── BV 실시간 표시 + Method 선택 chip (2026-07-15) ──
+        //   6ch grid 아래에 세 method (V41/FRUSTUM/METHOD_D) 를 chip 으로 전환하며
+        //   선택된 method 의 BV 를 큼직하게 표시. session log 에는 저장 안 함 (표시 전용).
+        val bvByMethod = mapOf(
+            com.medithings.vesiscan.managers.BvMethod.V41 to bvV41,
+            com.medithings.vesiscan.managers.BvMethod.FRUSTUM to bvFrustum,
+            com.medithings.vesiscan.managers.BvMethod.METHOD_D to bvMethodD,
+        )
+        val currentBv = bvByMethod[selectedBvMethod]
+        Card(
+            modifier = Modifier.fillMaxWidth().padding(horizontal = 12.dp),
+            shape = RoundedCornerShape(10.dp),
+            colors = CardDefaults.cardColors(containerColor = MlCardBackground),
+        ) {
+            Column(modifier = Modifier.padding(horizontal = 12.dp, vertical = 10.dp)) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Text("BV", fontSize = 12.sp, color = MlSecondaryText,
+                        fontWeight = FontWeight.SemiBold)
+                    Spacer(modifier = Modifier.width(10.dp))
+                    Text(currentBv?.let { "${"%.1f".format(it)} mL" } ?: "— mL",
+                        fontSize = 26.sp, fontWeight = FontWeight.ExtraBold,
+                        color = MlPrimary)
+                    Spacer(modifier = Modifier.weight(1f))
+                    Text(selectedBvMethod.name, fontSize = 11.sp,
+                        color = MlSecondaryText, fontWeight = FontWeight.Medium)
+                }
+                Spacer(modifier = Modifier.height(6.dp))
+                // Method 전환 chip row — 클릭 시 GreenZoneConstants.bvMethod 도 동기 갱신.
+                Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+                    com.medithings.vesiscan.managers.BvMethod.values().forEach { m ->
+                        val selected = m == selectedBvMethod
+                        val bv = bvByMethod[m]
+                        FilterChip(
+                            selected = selected,
+                            onClick = {
+                                selectedBvMethod = m
+                                com.medithings.vesiscan.managers.GreenZoneConstants.bvMethod = m
+                            },
+                            label = {
+                                Text(
+                                    "${m.name}: ${bv?.let { "%.0f".format(it) } ?: "-"}",
+                                    fontSize = 11.sp,
+                                    fontWeight = if (selected) FontWeight.Bold else FontWeight.Normal,
+                                )
+                            },
+                        )
+                    }
+                }
+            }
+        }
+
+        Spacer(modifier = Modifier.height(8.dp))
+
         // ── IMU 정보 ──
         if (lastImu.isNotEmpty()) {
             val posture = remember(lastImu) { ImuAnalysis.estimatePosture(lastImu) }