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Updated: Oct 25, 2025
Transradial Access Chemoembolization for Hepatocellular Carcinoma Patients
Published on: September 20, 2020
The Rist radial access system: a multicenter study of 152 patients
Isaac Josh Abecassis1, Vasu Saini2, R Webster Crowley3
1Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA jabecassis@mac.com.
Background:
Transradial access (TRA) for neurointervention is becoming increasingly popular as experience with the technique grows. Despite reasonable efficacy using femoral catheters off-label, conversion to femoral access occurs in approximately 8.6-10.3% of TRA cases, due to an inability of the catheter to track into the vessel of interest, lack of support, or radial artery spasm.
Methods:
This is a multicenter, retrospective case series of patients undergoing neurointerventions using the Rist Radial Access System. We also present our institutional protocol for using the system.
Results:
152 patients were included in the cohort. The most common procedure was flow diversion (28.3%). The smallest radial diameter utilized was 1.9 mm, and 44.1% were performed without an intermediate catheter. A majority of cases (96.1%) were completed successfully; 3 (1.9%) required conversion to a different radial catheter, 2 (1.3%) required conversion to femoral access, and 1 (0.7%) was aborted. There was 1 (0.7%) minor access site complication and 4 (2.6%) neurological complications.
Conclusions:
The Rist catheter is a safe and effective tool for a wide range of complex neurointerventions, with lower conversion rates than classically reported.
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