Study backs towel restraint for conscious rabbit CT

A newly published retrospective multicenter study is putting a simple handling technique under the imaging spotlight: the “bunny burrito” towel wrap for CT scans in conscious rabbits. In Veterinary Radiology & Ultrasound, Hung-Ting Liu and co-authors report that the restraint method performed well as an alternative to plexiglass chamber restraint, with significantly less motion artifact and better image quality in some scenarios, while avoiding anesthesia-related complications in the cases reviewed. (eurekamag.com)

The paper lands in a clinical environment where conscious CT in rabbits is already established, especially in exotic and rabbit-focused practice. Prior published work has shown that many rabbits can undergo diagnostic-quality CT without anesthesia, including studies of middle ear disease and ocular imaging, often using physical restraint or a plexiglass tube system. More broadly, rabbit imaging and neuroscience literature has long noted that rabbits can tolerate restraint better than many small mammals, which has supported awake imaging models in other settings as well. (pubmed.ncbi.nlm.nih.gov)

That context matters because the alternative, while often necessary, is not trivial. Rabbit anesthesia remains a higher-risk proposition than anesthesia in dogs and cats. A large UK prospective study estimated anesthesia- and sedation-related mortality in rabbits at 1.39% overall within 48 hours, with higher risk in sick animals, while a later retrospective study of pet rabbits reported an actual mortality rate of 4.8% and frequent peri-anesthetic gastrointestinal complications. A more recent multicenter study published in 2025 again described rabbit anesthesia as carrying higher morbidity and mortality than in more conventional companion animal species. (pubmed.ncbi.nlm.nih.gov)

Against that backdrop, the new study’s appeal is straightforward: if a towel-wrap restraint can produce cleaner images than a plexiglass chamber in some cases, clinics may have another option between chamber restraint and sedation. The source abstract describes significantly lower motion artifacts and better image quality in specific contexts, suggesting the technique may be especially useful where subtle movement can compromise interpretation. The method also builds on standard rabbit handling practice. Veterinary and husbandry references have long described towel wrapping as a recognized restraint approach, although they also stress that physical restraint must be careful and well executed to avoid stress or injury. (eurekamag.com)

Direct third-party reaction to this specific paper appears limited so far, but the broader industry view is consistent: there is growing interest in conscious CT for rabbit patients. Conference material from exotic imaging specialists has described increasing demand for conscious CT in clinical rabbit practice, particularly because it can identify disease while reducing anesthesia exposure in debilitated patients. Separate rabbit CT studies have also explored conscious contrast-enhanced scanning and disease-specific applications, reinforcing that non-anesthetized imaging is moving from niche technique toward a more established workflow in selected cases. (orbi.uliege.be)

Why it matters: For veterinary teams, this study is less about novelty than about validation. Many clinicians already use towel restraint in exams and minor procedures, but comparative data can help support protocol decisions, staff training, and conversations with pet parents. If the bunny burrito technique proves reproducible across centers, it may be especially valuable for rabbits that are poor anesthesia candidates, for practices without immediate access to advanced anesthesia support, or for CT indications where positioning demands are manageable without sedation. It also highlights an operational point: better conscious restraint is not only a welfare question, but an image quality and throughput question. (eurekamag.com)

There are still important caveats. The study was retrospective and observational, based on the abstracted source information, so it likely cannot fully control for case selection, operator experience, scanner protocols, or which body regions were most amenable to towel restraint. And even if the method reduces the need for anesthesia in some rabbits, it will not replace sedation or general anesthesia for every indication, every temperament, or every required positioning setup. In other words, this is probably best viewed as an additional tool rather than a universal substitute. (eurekamag.com)

What to watch: The next step is prospective work that breaks outcomes down by anatomy scanned, scan duration, patient temperament, and staff experience, and that compares towel restraint not just with plexiglass chambers, but with sedation protocols tailored to preserve diagnostic quality in thoracic and other motion-sensitive studies. (pmc.ncbi.nlm.nih.gov)