FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * CADWELL MARVIN S   2. Issuer Name and Ticker or Trading Symbol RADIOLOGIX INC [RGX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O RADIOLOGIX, INC. 3600 JP MORGAN, CHASE TOWER 2200 ROSS AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 11/15/2006 (Street) DALLAS, TX 75201 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value $.0001 11/15/2006   D   8,000 D (1) 0 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Director Stock Option

$ 13.05

11/15/2006

D

30,000

(2)

(4)

Common Stock, par value $.0001

30,000

(4)

0

D

Director Stock Option

$ 4.69

11/15/2006

D

50,000

(3)

(4)

Common Stock, par value $.0001

50,000

(4)

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CADWELL MARVIN S C/O RADIOLOGIX, INC. 3600 JP MORGAN CHASE TOWER 2200 ROSS AVENUE DALLAS, TX 75201	X

Signatures

/s/ Marvin S. Cadwell		11/17/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Disposed of pursuant to the Agreement and Plan of Merger, dated as of July 6, 2006 (the "Merger Agreement"), by and among Radiologix, Inc. ("Radiologix") and Primedex Health Systems, Inc. ("Primedex") in exchange for a one for one exchange of Radiologix Common Stock for Primedex Common Stock and a cash payment of $14,320, or $1.79 per share.
(2)	This option became exercisable as to 10,000 shares upon optionee's completion of one year of service as a director on June 10, 2003, and thereafter became exercisable as to 833 shares per month for 24 months.
(3)	This option becomes exercisable as to 30,000 shares upon optionee's completion of one year of service as Chairman of the Board on December 3, 2003, and thereafter as to 833 shares per month for 24 months.
(4)	Immediately prior to the effective time of the merger, pursuant to the Merger Agreement, these options were accelerated, vested, or otherwise awarded and subsequently cancelled without any exchange of Radiologix Common Stock for Primedex Common Stock or cash payment.

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