Officials at the American College of Radiology (ACR) are highly concerned by Cruise's revelation that he purchased the device to track his child's progress, and they're warning him that he could be breaking the law if he's carrying out the scans himself.
DR CAROL M RUMACK, of the ACR Ultrasound Commission, says, "This is a patient safety issue. Untrained people, even if they have the financial means, should not buy, or be allowed to buy and operate, ultrasound machines which are, in fact, medical devices and should not be used without a medical indication.
"Images of the foetus are an opportunity to diagnose problems before birth that may require treatment. These images should be obtained by certified technologists under the supervision of physicians properly trained in ultrasound...
"The ACR is concerned that Tom Cruise has been badly advised regarding the use and potential abuse of ultrasound. There are many abnormalities that may be missed by the untrained eye. Also, if it is not medically necessary, the use of ultrasound raises unnecessary physical risk to the foetus."