From f2b77d2a4a43094913cd16bbfed3c6ba02d84a5a Mon Sep 17 00:00:00 2001
From: dannyrb <danny.ri.brown@gmail.com>
Date: Tue, 16 Jun 2020 00:43:04 -0400
Subject: [PATCH] fix missing import

---
 extensions/dicom-sr/src/OHIFCornerstoneSRViewport.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/dicom-sr/src/OHIFCornerstoneSRViewport.js b/extensions/dicom-sr/src/OHIFCornerstoneSRViewport.js
index 84d5a0b1f..b20e4c6ff 100644
--- a/extensions/dicom-sr/src/OHIFCornerstoneSRViewport.js
+++ b/extensions/dicom-sr/src/OHIFCornerstoneSRViewport.js
@@ -1,4 +1,4 @@
-import React, { useEffect, useState } from 'react';
+import React, { useCallback, useEffect, useState } from 'react';
 import PropTypes from 'prop-types';
 import cornerstoneTools from 'cornerstone-tools';
 import cornerstone from 'cornerstone-core';