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As Low As Reasonably Achievable Radiation Dose

Because the Carestream Dental CS 9300-C system allows technicians to target a precise area for exposure, our patients are exposed to significantly less radiation. The system combines speed, image quality and precision placement to dramatically reduce the occasional need for retakes.

By using less radiation dose than conventional CT scans, our 3D system better helps us adhere to the ALARA Principle – or, “As Low As Reasonably Achievable ” – which we follow to ensure we take every precaution to minimize patient exposure to radiation when obtaining the diagnostic images needed for treatment planning.

The Carestream Dental CS 9300-C’s selectable fields of view, resolutions, and scan times confine radiation to the region of interest to ensure a safer exam for your patients. As a result, the system delivers a fraction of the dose of conventional multi-detector CT (MDCT) systems.1,2 For example, MDCT systems typically deliver dose levels between 0.8 mSv and 2.0 mSv for sinus and temporal bone exams using standard protocols.3,4,5,6

The Carestream Dental CS 9300-C’s half-scan protocols (all fields of view except 17×13.5cm) also promote considerable dose sparing of the anterior region—including the eyes—when compared to full-scan protocols commonly used in MDCT and other cone beam CT systems.1 The system’s ability to minimize radiation dose is particularly important when examining children and adults who require multiple CT scans.




1 Xu J, Reh D,Carey J, Mahesh M, Siewerdsen JH. Technical assessment of a cone beam CT scanner for otolaryngology imaging: image quality, dose and technique protocols. Med. Phys. Accepted for publication, July 2012.

2 J. B. Ludlow, University of North Carolina, June 2011.

3 Ludlow JB, Ivanovic M. Comparative dosimetry of dental CBCT devices and 64-slice CT for oral and maxillofacial radiology. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008;106:106-114.

4 Niu Y, Wang Z, Liu Y, Liu Z, Hao V. Radiation dose to the lens using different temporal bone CT scanning protocols. Amer J Neuroradiol 2010;31:2:226-229.

5 Mettler FA, Wiest PW, Locken JA, Kelsey CA. CT scanning: patterns of use and dose. J Radiol Prot 2000;20:4:353-359.

6 Huda W, Chamberlain CC, Rosenbaum AE, Garrisi W. Radiation doses to infants and adults undergoing head CT examinations. Med Phys 2001;28:3:393-399.

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