From e4cc044219e4887910d0af19fd95ef026a05e3d7 Mon Sep 17 00:00:00 2001
From: he <109787524@qq.com>
Date: Fri, 19 Sep 2025 15:56:05 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9?=
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---
 .../Service/ReadingCalculate/PCWG3CalculateService.cs    | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs
index 5905518d8..ced5c5a11 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/PCWG3CalculateService.cs
@@ -1313,7 +1313,14 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                         // V3与V2的间隔 >= 6周
 
                         // 按上面条件写三个if看着清晰点
-                        if (lastNewLesionsCount + lastBTN - lastTwoBTN >= 2)
+
+                        var lastBtnSubMin = lastBTN - lastTwoBTN;
+                        if (lastBtnSubMin < 0)
+                        {
+                            lastBtnSubMin = 0;
+                        }
+
+                        if (lastNewLesionsCount + lastBtnSubMin >= 2)
                         {
                             if (thisNewBoneLesionsCount + btnValue + thisNewLesionsCount >= 2)
                             {