diff --git a/app/src/main/java/com/example/medilightv2android/managers/PiezoEchoAnalyzer.kt b/app/src/main/java/com/example/medilightv2android/managers/PiezoEchoAnalyzer.kt
index 406c2a1..70b4d0f 100644
--- a/app/src/main/java/com/example/medilightv2android/managers/PiezoEchoAnalyzer.kt
+++ b/app/src/main/java/com/example/medilightv2android/managers/PiezoEchoAnalyzer.kt
@@ -321,7 +321,7 @@ class PiezoEchoAnalyzer private constructor() {
         return max(q25, median - 0.5 * iqr)
     }
 
-    var useAdaptiveThreshold: Boolean = true
+    var useAdaptiveThreshold: Boolean = false
 
     /** 단일 1D 채널 → urine region 탐지 */
     fun detectLowEcho(raw: DoubleArray, denoised: DoubleArray): LowEchoResult? {