EXHIBIT 21



|                                           |  |                                
|------------------------------------------ |  | -------------------------------
|Name                                       |  | Jurisdiction of Incorporation  
|Analogic Limited                           |  | Massachusetts                  
|                                           | 
|ANALOGIC FOREIGN SALES CORPORATION         |  | U.S. Virgin Islands            
|                                           | 
|Analogic Holding Luxembourg S.a.r.l.       |  | Luxembourg                     
|                                           | 
|ANALOGIC SECURITIES CORPORATION            |  | Massachusetts                  
|                                           | 
|ANADVENTURE II CORPORATION                 |  | Massachusetts                  
|                                           | 
|ANADVENTURE 3 CORPORATION                  |  | Massachusetts                  
|                                           | 
|ANADVENTURE DELAWARE, INC.                 |  | Delaware                       
|                                           | 
|ANATEL COMMUNICATIONS CORPORATION          |  | Massachusetts                  
|                                           | 
|ANEXA Corporation                          |  | Massachusetts                  
|                                           | 
|Anexa Financial Services, Inc.             |  | Massachusetts                  
|                                           | 
|ANRAD CORPORATION                          |  | Province of Nova Scotia, Canada
|                                           | 
|B-K Medical Holding ApS                    |  | Denmark                        
|                                           | 
|B-K Medical ApS                            |  | Denmark                        
|                                           | 
|B-K Medical AB                             |  | Sweden                         
|                                           | 
|B-K Medical (Asia) Pte. Ltd.               |  | Singapore                      
|                                           | 
|B-K Medical Benelux NV/SA                  |  | Belgium                        
|                                           | 
|B-K Medical Medizinische Systeme GmbH      |  | Germany                        
|                                           | 
|B-K Medicale S.r.L                         |  | Italy                          
|                                           | 
|B-K Medical Systems, Inc.                  |  | Massachusetts                  
|                                           | 
|B-K Medical (China) Limited                |  | Hong Kong                      
|                                           | 
|FTNI Inc.                                  |  | Province of Quebec, Canada     
|                                           | 
|International Security Systems Corporation |  | Massachusetts                  
|                                           | 
|SKY COMPUTERS, INC.                        |  | Massachusetts                  
|                                           | 
|SKY Computers (Europe) Ltd.                |  | England                        
|                                           | 
|Sound Technology, Inc.                     |  | Pennsylvania