Digital motion X-ray

Digital motion X-ray

(Digital Motion X-Ray: Non-fluoroscopic) Conventional radiography is now used for the recording of motion studies. This method does not employ the use of fluoroscopy that has been the most common use of X-rays but rather uses conventional X-rays. The manner of recording a motion study is to couple an X-ray system with a digital computer and a detection system that records images in real time.

Example: The A2D2, Inc. Model 1713 is a digital system that is capable of recording static images or a dynamic sequence.

Static images are recorded in a 5,000 by 4,000 pixel array with 14 bit capacity. These images are stored in the computer memory for recording and/or playback. Dynamic studies are recorded in real time at a rate of 30 frames per second with resolution of 1990 by 1200 pixels. Typically, one second of data recording is required for a complete motion study at 30 frames per second. Sophisticated software is used to automatically record the study and then to cause it to playback in a bi-directional format.

Patient radiation dose is minimal over the one second time frame. Typical radiation dose is approximately 2 mSv for this one second period. Any form of joint motion can be recorded and analyzed.

(DMX: Fluoroscopic) is a video-based fluoroscopy system. DMX is the next evolution of static X-ray which is coupled with digital and optic technology, allowing clinicians to view the spine and extremity articulations in real-time motion at 30 exposures per second. The procedure is performed with the patient standing and actively moving in a weight bearing position within the system. DMX allows clinicians to evaluate all 22 major ligaments of the cervical spine with up to 2,700 X-ray images. The DMX is used to find ligament damage that static films and MRI miss. The DMX is well founded X-ray based on sound scientific principles.

(Motion X-Ray)

1. Bill O'Neill inventor of and leader in non-fluoroscopic digital motion x-ray technology.

(DMX)

1. Hino H, Abumi K, Kanayama M, Kaneda K. Dynamic Motion analysis of normal and unstable cervical spines using cineradiography. An in vivo study. Spine, 1999 Jan 15;24(2): 163-8.

2. Motomochi M, et al., Diagnosis of Abnormal Spine Motion with Cineradiography. No Shinkei Geka. 1978 Nov; 6(11): 1077-82.

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