Feature | Computed Tomography (CT) | May 04, 2018

Black Rhinoceros at Brookfield Zoo Undergoes Portable CT Scan

First-ever CT scan of a rhinoceros used to find root cause of life-threatening nasal blockage

Black Rhinoceros at Brookfield Zoo Undergoes Portable CT Scan

Layla the rhinoceros was given what is believed to be the first-ever CT scan of an eastern black rhinoceros at Brookfield Zoo on April 19, 2018. The scanner — a portable, battery-powered, 32-slice Samsung BodyTom — was brought into Layla's habitat. Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros Sedated

Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros Sedated

Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros Sedated

Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros Sedated

Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros Sedated

Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros Sedated

Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros Sedated

Image courtesy of Kelly Tone/Chicago Zoological Society

 Layla Rhinoceros in CT scan

Image courtesy of Kelly Tone/Chicago Zoological Society

 Rhinoceros CT Scan

Image courtesy of Chicago Zoological Society

 Rhinoceros CT Scan

Image courtesy of Chicago Zoological Society

 Rhinoceros CT Scan

Image courtesy of Chicago Zoological Society

 Rhinoceros CT Scan

Image courtesy of Chicago Zoological Society

 Rhinoceros CT Scan

Image courtesy of Chicago Zoological Society

 Rhinoceros CT Scan

Image courtesy of Chicago Zoological Society

 Rhinoceros CT Scan

Image courtesy of Chicago Zoological Society

May 4, 2018 — On April 19, 2018, Layla, a 7½ -year-old, 2,300-pound eastern black rhinoceros who lives at Brookfield Zoo, underwent what is believed to be the first computed tomography (CT) scan ever performed on this species. The scan was necessary to help Chicago Zoological Society (CZS) veterinarians determine the next steps for treating a known obstruction in Layla’s nasal passageway.

Layla was too large to move inside the zoo's animal hospital, where the zoo's CT scanner is located, so staff brought a CT scanner to Layla’s habitat instead. NeuroLogica, a subsidiary of Samsung Electronics, donated the use of its BodyTom battery-powered, portable, 32-slice CT scanner, for the procedure. The process of moving Layla to and from the machine was extraordinarily delicate and required the presence and precision of a team of nearly 40 zoo staff. Technicians from NeuroLogica and Sound Technologies donated their services to set up and operate the CT machine.

“The CT scan provided diagnostic results that we could not have otherwise obtained,” said Dr. Michael Adkesson, vice president of clinical medicine for CZS, which manages Brookfield Zoo. “This procedure is an example of our commitment to providing the animals in our care with the most advanced medical treatment available. More importantly, though, the CT scan on Layla has provided us an unparalleled look inside of her skull. The images we obtained will guide our future treatment plan.”

Layla began experiencing difficulty breathing in December 2017 and was diagnosed with obstructive sinusitis. Rhinos are obligate nasal breathers, meaning it is difficult for them to breathe comfortably through their mouth for long periods. Any sort of nasal obstruction can therefore become dangerous, and after failing to respond to standard medical treatments, Layla underwent bilateral sinusotomy surgery at the zoo in Brookfield, Ill., on Jan. 29, 2018. Veterinarians were able to identify a bacterial infection in her nasal passageway.

For the surgery in January, CZS staff brought in Drs. Anthony Blikslager and Mathew Gerard, board-certified veterinary surgeons from North Carolina State University, College of Veterinary Medicine, to assist with the procedure. The two surgeons, who have extensive knowledge related to rhinoceroses’ skull and sinuses, have been working on developing surgical methods to help treat rhinos in Africa that have had their horns cut off by poachers. This surgery significantly improved Layla’s comfort levels and allowed staff to begin treating her infection. Over the past two months, Layla has been anesthetized on a weekly basis for intravenous antibiotic therapy and to continue debulking, or removing, infected tissue through two surgical holes created to access her sinuses.

However, despite her progress, the initial surgery was unable to identify the source or extent of the problem, and it was determined advanced imaging was needed to complete treatment. On April 19, staff got their answers — the images obtained on the CT scan have revealed abnormal tissue associated with the root of one of Layla’s upper molars. The growth of this tissue is causing the obstruction in her nasal passages and sinuses.

Rhinoceros CT Scan Brookfield Zoo

Image courtesy of Chicago Zoological Society

To prepare for the CT scan procedure, the Chicago Zoological Society’s carpenters constructed a custom-made platform. After being anesthetized and stabilized, Layla was carefully slid onto the platform and a front-end loader was used to gently move her onto the zoo's large surgical table. Animal care specialists and grounds staff then carefully moved the table to the portable CT scanner set up in the Pachyderm House. The flawless procedure was possible, in part, due to several practice runs staff had performed using 2,300 pounds of concrete to simulate Layla's weight.

Animal care staff monitored Layla closely following the procedure. She currently is comfortable in an area behind the scenes, while veterinarians are developing a plan to surgically remove the remaining abnormal tissue and to provide subsequent treatment for Layla.

For more information: www.brookfieldzoo.org

 

Related Content

Video Plus Brochure Helps Patients Make Lung Cancer Scan Decision

Image courtesy of the American Thoracic Society

News | Lung Cancer | April 19, 2019
A short video describing the potential benefits and risks of low-dose computed tomography (CT) screening for lung...
FDA Clears GE's Deep Learning Image Reconstruction Engine
Technology | Computed Tomography (CT) | April 19, 2019
GE Healthcare has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) of its Deep Learning Image...
Videos | RSNA | April 03, 2019
ITN Editor Dave Fornell takes a tour of some of the most interesting new medical imaging technologies displa
Johns Hopkins Medicine First in U.S. to Install Canon Medical's Aquilion Precision
News | Computed Tomography (CT) | March 26, 2019
March 26, 2019 — Johns Hopkins Medicine now has access to the first...
At #ACC.19, Siemens unveiled a version of its go.Top platform optimized for cardiovascular imaging. The newly packaged scanner can generate the data needed to do CT-based FFR (fractional flow reserve).

At #ACC.19, Siemens unveiled a version of its go.Top platform optimized for cardiovascular imaging. The newly packaged scanner can generate the data needed to do CT-based FFR (fractional flow reserve). Photo by Greg Freiherr

Feature | Cardiac Imaging | March 22, 2019 | By Greg Freiherr
Reflecting a trend toward the increased use of...
Researchers Use Radiomics to Predict Who Will Benefit from Chemotherapy
News | Radiomics | March 21, 2019
Using data from computed tomography (CT) images, researchers may be able to predict which lung cancer patients will...
HeartFlow Analysis Successfully Stratifies Heart Disease Patients at One Year
News | CT Angiography (CTA) | March 19, 2019
Late-breaking results confirm the HeartFlow FFRct (fractional flow reserve computed tomography) Analysis enables...
Podcast | Cardiac Imaging | March 15, 2019
Debate About Coronary Testing Highlights ACC Session
Canon Medical Introduces Entry-Level Aquilion Start CT
News | Computed Tomography (CT) | March 14, 2019
Canon Medical Systems Europe B.V. introduced the all-new Aquilion Start computed tomography (CT) system to the European...
Siemens Healthineers Debuts Cardiovascular Edition of Somatom go.Top CT
News | Computed Tomography (CT) | March 14, 2019
Siemens Healthineers will introduce the Somatom go.Top Cardiovascular Edition, a new version of its established...