Bij de recente research rapporten op cavalierhealth.org las ik het volgende, dat ik graag onder de aandacht wil brengen;
Bij een mens wordt gehoorbescherming toegepast tijdens de MRI. Dit zou ook bij honden moeten!
Bijv. De fok Cavaliers ondergaan vaak vóór 2 1/2 jaar een MRI en dan ook nog eens op 2 1/2 jarige leeftijd. Ook Cavaliers met verschijnselen van Chiari-achtige Malformatie en Syringomyelie worden gediagnosticeerd d.m.v. een MRI. Vele Cavaliers hebben na de MRI gehoorverlies en verminderde functie van het slakkenhuis (cochlear).
Standaard zouden de oren van een hond beschermd moeten worden tijdens het nemen van een MRI.
Bij de Cavalier is het naar mijn mening zeer belangrijk om rekening te houden met de gevoeligheid van het hoofdje door de Chiari-achtige Malformatie en Syringomyelie.
November 2013: Univ. of Glasgow thesis reports MRI noise causes hearing loss and reduced
cochlear function in dogs. In a 2013 Master of Science (Research) thesis at the University of Glasgow, Rebecca Elisabeth Venn reports that all of 36 dogs (including four cavalier King Charles spaniels) which underwent MRI scans, experienced reduced cochlear function and more than half of the 36 dogs had hearing loss using Distortion Product Otoacoustic Emissions (DPOAE) testing. Ms. Venn noted that the post-MRI testing was not repeated weeks after the MRIs, so it is not known if the hearing loss was temporary or permanent. She also noted that evidence from human MRI noise exposure suggests that the hearing loss is temporary. She recommends that "all dogs having MRI studies performed should have ear protection as a standard precautionary measure."
Geplakt uit <http://www.cavalierhealth.org/syringomyelia.htm>
Evaluation of MR safety of a set of canine ear defenders (MuttMuffs®) at 1 T. Martin A. Baker. Radiography. Nov. 2013;19
(4):339-342. Quote: "Previous studies have indicated that loud noise produced during MR scanning is hazardous for human patients. Although loud noise can also be harmful to canine patients in MRI, ear protection is not routinely provided. The purpose of this study was to test the safety of a set of commercially available canine ear defenders (MuttMuffs®) during MRI scanning at 1 T. ... The dogs were all of the same breed (Cavalier King Charles Spaniel), with half having been provided with the ear defenders and half which had not. ... A metal fastening ring was removed and replaced with a plastic washer prior to testing. Torque, translation, heating and artifact production were tested. No torque, translation, or excessive heating were detected. No artifacts were observed. Clinical use demonstrated additional benefits of improved immobilisation of the dog, with no effect on signal-to-noise ratio. Results from this study indicate that following replacement of the metal ring with one made of plastic, these canine ear defenders are suitable for use at 1 T. The author recommends the use of ear defenders during canine MRI scans in order to reduce the risk of hearing damage, reduce the dose needed for anaesthetic maintenance and reduce the need for repeated MRI sequences due to movement of the dog."
Geplakt uit <http://www.cavalierhealth.org/sm-mri-screeningprotocol.htm>


Reageren














