X-Cel X-Ray Corporation

X-cel X-ray Corporation

X-Ray and Specialty Instruments, Inc.

X-ray Capillary Optics AB

X-Ray Cassette Repair Co. Inc.

X-Ray Industries, Inc.

X-Ray Manufacturing & Supply, Inc.

X-Ray Optical System, Inc.

X-ray Optical Systems, Inc.

X-Ray Research GmbH

X-Ray Slider, Ltd.

X-Ray Technologies Pty Ltd

X-Ray Technologies PTY Ltd.

X-Ray Technologies Pty, Ltd.

X-Ray Technologies Pty. LTD

X-Ray Technologies, Inc.

X-Scan Imaging Corporation

X-Technologies Inc.

X-Technologies, Ltd.

X-Tek Systems Limited