UNITED STATES
                  SECURITIES AND EXCHANGE COMMISSION
                        WASHINGTON, D.C. 20549
                                   
                             SCHEDULE 13G
                                   
                                   
               UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                   
                          (Amendment No. __)
                                   
                                   
                          DIGIRAD CORPORATION
                          -------------------
                           (Name of Issuer)
                                   
               Common Stock, $0.0001 par value per share
               -----------------------------------------
                    (Title of Class of Securities)
                                   
                               253827109
                               ----------
                            (CUSIP Number)
                                   
                           December 31, 2006
                           -----------------
        (Date of Event Which Requires Filing of This Statement)
                                   
          Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:

          [x]  Rule 13d-1(b)

          [ ]  Rule 13d-1(c)

          [ ]  Rule 13d-1(d)


          *The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to the 
subject class of securities, and for any subsequent amendment containing
information which would alter the disclosures provided in a prior cover
page.

          The information required in the remainder of this cover page
shall not be deemed to be "filed" for the purpose of Section 18 of the
Securities Exchange Act of 1934 ("Act") or otherwise subject to the
liabilities of that section of the Act but shall be subject to all
other provisions of the Act (however, see the Notes).



<PAGE>
CUSIP 253827109             SCHEDULE 13G               Page 2 of 6 Pages

 1    Name of Reporting Person         WENTWORTH, HAUSER & VIOLICH, INC.
      
      IRS Identification No. of Above Person
      
 2    Check the Appropriate Box if a member of a Group          (a)  [ ]
      
                                                                (b)  [ ]
 3    SEC USE ONLY
      
 4    Citizenship or Place of Organization     Washington, United States
      
   NUMBER OF        5    Sole Voting Power                             0
     SHARES              
  BENEFICIALLY      6    Shared Voting Power                   1,024,000
 OWNED BY EACH
   REPORTING        7    Sole Dispositive Power                        0
  PERSON WITH
                    8    Shared Dispositive Power              1,024,000
                    
  9    Aggregate Amount Beneficially Owned by Each Reporting
       Person                                                  1,024,000
       
 10    Check Box if the Aggregate Amount in Row (9) Excludes Certain
       Shares                                                        [ ]
       
 11    Percent of Class Represented by Amount in Row 9              5.5%
       
 12    Type of Reporting Person                                       IA
       


<PAGE>
CUSIP 253827109             SCHEDULE 13G               Page 3 of 6 Pages

Item 1(a).     Name of Issuer.

               Digirad Corporation

Item 1(b).     Address of Issuer's Principal Executive Offices.
          
               13950 Stowe Drive
               Poway, CA 92064
          
Item 2(a).     Name of Person Filing.
          
               Wentworth, Hauser & Violich, Inc. ("Wentworth")
          
Item 2(b).     Address of Principal Business Office or, if none,
               Residence.
          
               353 Sacramento Street, Suite 600
               San Francisco, CA  94111
          
Item 2(c).     Citizenship.
          
               Washington, United States
          
Item 2(d).     Title of Class of Securities.

               Common Stock, $0.0001 par value per share

Item 2(e).     CUSIP Number.
          
               253827109

Item 3.        Type of Reporting Person.
          
               If this statement is filed pursuant to Rule 13d-1(b) or
               Rule 13d-2(b) or (c), check whether the person filing
               is a:
          
               (a)  [ ] Broker or dealer registered under section 15 of
               the Exchange Act.
          
               (b)  [ ] Bank as defined in section 3(a)(6) of the
               Exchange Act.
          
               (c)  [ ] Insurance company as defined in section 3(a)(19)
               of the Exchange Act.
             
               (d)  [ ] Investment company registered under section 8 of
               the Investment Company Act of 1940.
             
               (e)  [x] An investment adviser in accordance with Rule
               13d-1(b)(1)(ii)(E);
             


<PAGE>
CUSIP 253827109             SCHEDULE 13G               Page 4 of 6 Pages

               (f)  [ ] An employee benefit plan or endowment fund in
               accordance with Rule 13d-1(b)(1)(ii)(F);
             
               (g)  [ ] A parent holding company or control person in
               accordance with Rule 13d-1(b)(1)(ii)(G);
             
               (h)  [ ] A savings association as defined in Section
               3(b) of the Federal Deposit Insurance Act;
             
               (i)  [ ] A church plan that is excluded from the
               definition of an investment company under section
               3(c)(14) of the Investment Company Act of 1940;
             
               (j)  [ ] Group, in accordance with Rule
               13d-1(b)(1)(ii)(J).
             
Item 4.        Ownership.

               Reference is hereby made to Items 5-9 and 11 of page 2 of
this Schedule 13G (this "Schedule"), which Items are incorporated by
reference herein.

               Under the definition of "beneficial ownership" in Rule
13d-3 under the Securities Exchange Act of 1934, it is also possible
that the individual directors, executive officers, and/or shareholders
of Wentworth might be deemed the "beneficial owners" of some or all of
the securities to which this Schedule relates in that they might be
deemed to share the power to direct the voting or disposition of such
securities.  Neither the filing of this Schedule nor any of its contents
shall be deemed to constitute an admission that any of such individuals
is, for any purpose, the beneficial owner of any of the securities to
which this Schedule relates, and such beneficial ownership is expressly
disclaimed.

               The calculation of percentage of beneficial ownership in
item 11 of page 2 was derived from the Issuer's Form 10-Q filed with the
Securities and Exchange Commission on October 31, 2006, in which the
Issuer stated that the number of shares of its Common Stock, $0.0001 par
value per share outstanding, as of October 24, 2006 was 18,785,864.

Item 5.        Ownership of Five Percent or Less of a Class.

               Not applicable.


<PAGE>
CUSIP 253827109             SCHEDULE 13G               Page 5 of 6 Pages

Item 6.        Ownership of More Than Five Percent on Behalf of Another
               Person.
          
               Wentworth is deemed to be the beneficial owner of the
number of securities reflected in Items 5-9 and 11 of page 2 of this
Schedule pursuant to separate arrangements whereby Wentworth acts as
investment adviser to certain persons.  Each person for whom the
reporting person acts as investment adviser has the right to receive or
the power to direct the receipt of dividends from, or the proceeds from
the sale of, the securities purchased or held pursuant to such
arrangements.

Item 7.        Identification and Classification of the Subsidiary Which
               Acquired the Security Being Reported on by the Parent
               Holding Company.
          
               Not applicable.
          
Item 8.        Identification and Classification of Members of the
               Group.
          
               Not applicable.

Item 9.        Notice of Dissolution of Group.
          
               Not applicable.

Item 10.       Certification.
          
               By signing below I certify that, to the best of my
knowledge and belief, the securities referred to above were acquired and
are held in the ordinary course of business and were not acquired and
are not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were not
acquired and are not held in connection with or as a participant in any
transaction having that purpose or effect.


<PAGE>
CUSIP 253827109             SCHEDULE 13G               Page 6 of 6 Pages

                                   
                                   
                               Signature
                                   
               After reasonable inquiry and to the best of my knowledge
and belief, I certify that the information set forth in this statement
is true, complete and correct.


                                 WENTWORTH, HAUSER & VIOLICH, INC.
                                 
                                 
                                 
                                 By:/s/ Bradford Hall
                                    ------------------------------------
                                    Bradford Hall, Chief Compliance
                                    Officer
                                 
                                 
                                 
                              
DATED:  February 7, 2007