sure can be tracked by patients via personal electronic health record platforms such as Google Health and Microsoft HealthVault.

2.5.6 California Legislation

California became the first state in the United States to regulate CT scans.15 The law dictates that facilities with CT systems capable of calculating and displaying radiation dose index document the dose index of each CT exam within the patient’s radiology exam report. (The deadline for meeting the requirement is July 2012.) The law also requires that a medical physicist verify annually the dose index for each protocol and that any reported errors are communicated to patients and physicians. (The law does not set a limit as to what the dose indices should be.) For the purposes of this bill, the radiation dose that should be recorded is defined as any metrics such as CTDIvol and DLP or a dose unit as recommended by the American Association of Physicists in Medicine (AAPM).16 This legislation was enacted in response to multiple events where patients were exposed to excessive radiation by diagnostic CT scanners, with the intent to prevent such events.17


15 Florida, New York, and Texas are also considering similar legislation (Schmidt, 2012).

16 AAPM is a member society concerned with the topics of medical physics, radiation oncology, and imaging physics with a primary goal of identifying and implementing improvements in patient safety for the medical use of radiation in imaging and radiation therapy.

17 See:

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