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Volume 8 Issue 3 - Australasian Society for Ultrasound in Medicine

Volume 8 Issue 3 - Australasian Society for Ultrasound in Medicine

Volume 8 Issue 3 - Australasian Society for Ultrasound in Medicine

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SOCIAL SCREENINGDraft of a letter sent from the President ofASUM to health departments, learned collegesand other medical and health organisationsI am writ<strong>in</strong>g to you on behalf of the <strong>Australasian</strong> <strong>Society</strong> of<strong>Ultrasound</strong> <strong>in</strong> Medic<strong>in</strong>e regard<strong>in</strong>g non medical 4D scann<strong>in</strong>gof babies. ASUM is a peak body <strong>in</strong> ultrasound whose purposeis to promote excellence and safe practise <strong>in</strong> ultrasound. Ourmembership is comprised of Medical Imag<strong>in</strong>g Specialists(ma<strong>in</strong>ly Obstetricians and Radiologists), Scientists <strong>in</strong>volved<strong>in</strong> the field, and technical personnel.Follow<strong>in</strong>g similar trends <strong>in</strong> the United States, recentlyseveral entrepreneurial groups have begun sett<strong>in</strong>g up bus<strong>in</strong>esseswhose sole purpose is the non medical scann<strong>in</strong>g ofbabies <strong>in</strong> utero to obta<strong>in</strong> 3D photographs and 4D video. Thereis no <strong>in</strong>volvement of qualified medical or technical personnelto our knowledge. We understand cl<strong>in</strong>ics have been established<strong>in</strong> Adelaide and Melbourne, and undoubtedly more willfollow <strong>in</strong> other cities.The establishment of these cl<strong>in</strong>ics causes considerableconcern to ASUM. It has been an established policy of ourss<strong>in</strong>ce ultrasound scann<strong>in</strong>g began, to keep fetal exposureto ultrasound as low as possible. Although no significant illaffects of ultrasound have yet been demonstrated, we feel wewould not be discharg<strong>in</strong>g our ethical responsibilities by notlimit<strong>in</strong>g exposure. Clearly these cl<strong>in</strong>ics who are scann<strong>in</strong>g <strong>for</strong>what could only be described as social reasons, contravenethis policy.Of greater concern however, is the very real probabilitythat patients will become confused as to what constitutes amedical scan and a non medical scan. The general populationmay <strong>in</strong> some circumstances believe they have had an ultrasoundscan of their baby and that all is satisfactory, confus<strong>in</strong>gthis with a medical scan which actually looks at the developmentof the fetus. In addition, should abnormalities be found,the circumstances <strong>for</strong> the delivery of this news would be suboptimal,potentially disturb<strong>in</strong>g, and probably quite unsafe.It is likely the Department of Health will see they have littlerole <strong>in</strong> this area as they will not be claimed upon <strong>for</strong> fund<strong>in</strong>g<strong>in</strong> any way. They have <strong>in</strong>dicated that they are not particularly<strong>in</strong>terested by these developments.We are writ<strong>in</strong>g to request your consideration of this matter.We believe that if your members become <strong>in</strong>volved <strong>in</strong> thisstyle of practise then they would be act<strong>in</strong>g unethically byblurr<strong>in</strong>g the boundaries between medical imag<strong>in</strong>g and nonmedical photography. We suggest it would be appropriate <strong>for</strong>your board to censure any of your members who may become<strong>in</strong>volved <strong>in</strong> this practise.We would appreciate you discuss<strong>in</strong>g this and <strong>for</strong>mulat<strong>in</strong>gan op<strong>in</strong>ion. We believe we should renounce the development ofthese cl<strong>in</strong>ics, and should proceed with lobby<strong>in</strong>g the Department ofHealth to legislate aga<strong>in</strong>st the existence of such cl<strong>in</strong>ics. Attachedis a draft statement outl<strong>in</strong><strong>in</strong>g our concerns.We look <strong>for</strong>ward to hear<strong>in</strong>g from you <strong>in</strong> the near future. Ifthere are any aspects to this matter or the statement youwould like to discuss, please do not hesitate to contact me.Dr David RogersPresident ASUMTo the EditorNon-medical applications of ultrasoundThe prudent use of medical ultrasound as advocated byASUM and other ultrasound societies usually refers to ‘medically<strong>in</strong>dicated’ procedures, i.e., those where an improveddiagnostic outcome is expected from the procedure. The useof diagnostic imag<strong>in</strong>g technology simply to view the fetus <strong>for</strong>demonstration purposes or to obta<strong>in</strong> a personal photograph orvideo does not constitute a medical use, <strong>in</strong> its strictest sense.In response to <strong>in</strong>creas<strong>in</strong>g commercial <strong>in</strong>terest <strong>in</strong> market<strong>in</strong>gnon-diagnostic ‘keepsake’ videos and photos, the AmericanInstitute of <strong>Ultrasound</strong> <strong>in</strong> Medic<strong>in</strong>e (AIUM) issued cautionarystatements aga<strong>in</strong>st what it describes as the non-medical use ofdiagnostic ultrasound (AIUM website).The FDA Centre <strong>for</strong> Devices and Radiological Healthhas also been quite outspoken, threaten<strong>in</strong>g regulatory actionaga<strong>in</strong>st the practice of commercial imag<strong>in</strong>g of fetuses <strong>for</strong>‘keepsake’ videos (FDA 2000). The FDA notified the medicalcommunity <strong>in</strong> the USA <strong>in</strong> 1994 regard<strong>in</strong>g its concerns aboutthe misuse of diagnostic ultrasound equipment and sought todiscourage their patients from hav<strong>in</strong>g sonograms <strong>for</strong> so-called‘non-medical’ reasons. The published FDA rationale states:‘Although there is no evidence that these physical effects canharm the fetus, public health experts, cl<strong>in</strong>icians and <strong>in</strong>dustryagree that casual exposure to ultrasound, especially dur<strong>in</strong>gpregnancy, should be avoided. Viewed <strong>in</strong> this light, expos<strong>in</strong>gthe fetus to ultrasound with no anticipation of medical benefitis not justified.’ (FDA 2000).The British Medical <strong>Ultrasound</strong> <strong>Society</strong> has publishedguidel<strong>in</strong>es that permit the use of non-medical ultrasound,but only under conditions that significantly limit the ultrasoundoutput (BMUS 2000) and, hence reduce the risk tothe patient <strong>in</strong> the absence of known benefit. The BMUSdef<strong>in</strong>es non-diagnostic use of ultrasound equipment as that<strong>in</strong>clud<strong>in</strong>g repeated scans <strong>for</strong> operator tra<strong>in</strong><strong>in</strong>g, equipmentdemonstration us<strong>in</strong>g normal subjects, and the productionof souvenir pictures or videos of a fetus. The BMUSguidel<strong>in</strong>es <strong>for</strong> non-diagnostic uses of diagnostic ultrasoundprovide upper limits to the thermal <strong>in</strong>dex (TI < 0.5) andmechanical <strong>in</strong>dex (MI < 0.3). These are somewhat restrictivebut were chosen to provide a lower degree of risk <strong>for</strong>procedures where there is no obvious cl<strong>in</strong>ical benefit. Notethat the FDA limits output on equipment (<strong>for</strong> use <strong>in</strong> theUSA) with an output display to MI < 1.9 <strong>for</strong> all exam<strong>in</strong>ationsexcept ophthalmic where MI < 0.23 applies. There isno limit on TI, but <strong>in</strong>tensity (spatial peak temporal average)is limited to a maximum of 720 mW/cm2.It is a matter of debate whether, or not, live scann<strong>in</strong>g maybe construed simply as an exercise <strong>in</strong> market<strong>in</strong>g the diagnosticability of a particular piece of ultrasound equipment.Stan BarnettChairman ASUM Safety CommitteeReferencesAIUM website. www.aium.org/stmts.htm#Prudent UseBMUS. British Medical <strong>Ultrasound</strong> <strong>Society</strong>, Guidel<strong>in</strong>es <strong>for</strong> the safe useof diagnostic ultrasound equipment. BMUS Bullet<strong>in</strong> 2000; 8: 30–33.FDA CDRH. Centre <strong>for</strong> Devices and Radiological Health Consumerupdate on fetal keepsake videos. June 2000. www.fda.gov/cdrh/consumer/fetalvideos.htm36 ASUM <strong>Ultrasound</strong> Bullet<strong>in</strong> 2005 August; 8 (3)

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