Swivel Arm Board May Make Cone-beam CT Acquisition Easier

A swivel arm can facilitate easier repositioning of the access arm during and after cone-beam computed tomography (CBCT) acquisition. Researchers reported their findings in the British Journal of Radiology.

The study’s authors pursued this investigation to determine whether a swivel arm board is a useful adjunct for CBCT acquisition during transradial TACE. They sought a feasible way to eliminate awkward arm movement and support catheter stability and ease of CBCT acquisition. The authors retrospectively evaluated consecutive cases of transradial TACE that occurred between November 2015 and March 2016.

Seventeen patients underwent 20 transradial TACE procedures that used the swivel arm. There were 14 patients with hepatocellular carcinoma and 3 with metastatic liver disease. Patients ranged in age from 48 to 82 years, with a mean age of 69.5 years.

“Transradial TACE was successful in all cases. A total of 40 successful arm repositioning using the swivel arm board for CBCT acquisitions were performed (100% success rate),” the authors stated.

Additionally, there were no situations in which the dislodgement of the catheter or sheath was associated with the arm movements. The authors described strategies they used to fix the microcatheter; ultimately, arm repositioning led to no detectable change in the tip of the microcatheter.

All patients reached hemostasis, and no complications related to access occurred.

“To conclude, the swivel arm board is a feasible and useful accessory that could be used to facilitate arm movement for CBCT acquisition during transradial TACE,” the authors wrote.


Pua U, Teo CC, U PT, Quek LHH. Cone-beam CT acquisition during transradial TACE made easy; use of the swivel arm board. Br J Radiol. 2017 Sep 13:20170248. doi: 10.1259/bjr.20170248. [Epub ahead of print].