Faculty & Staff Profile
Joyce Keyak
Professor
RADIOLOGICAL SCIENCES

Keyak has a joint faculty appointment in the Department of Biomedical Engineering.
Ph.D., UC San Francisco and UC Berkeley, Bioengineering
B.S., UC Berkeley, Mechanical Engineering
As a bioengineer, Dr. Keyak applies the principles of engineering to improve the understanding
and treatment of problems in bone. Her research currently focuses on:
• Development of radioactive bone cement for treatment of tumors in bone
• Bone strength assessment and treatment for osteoporosis and metastatic bone disease
Development of Radioactive Bone Cement for Treatment of Tumors in Bone
Dr. Keyak is developing a new method for treating metastatic tumors in the spine.
This technique combines vertebroplasty with brachytherapy to provide a single procedure
for alleviating pain and strengthening the bone while simultaneously delivering radiation
the tumor. In addition to convenience for the patient, significant advantages are
that the spinal cord would receive little or no radiation and that adverse side effects
would be minimal. Dr. Keyak is actively performing research at UCI in preparation
for FDA approval of clinical trials and has also co-founded a company, Bone-Rad Therapeutics,
Inc. (http://www.bone-rad.com), to bring this treatment to market.
Bone Strength Assessment and Treatment for Osteoporosis and Metastatic Bone Disease
This research focuses on cutting-edge techniques for evaluating bone strength and
hip fracture risk. Dr. Keyak pioneered a technique for rapidly creating patient-specific
structural engineering models (finite element models) of the hip. This technique and
variations of it are now used around the world to study bone. Research at UCI involves
studies of:
• Treatments to strengthen the hip
• Bone loss due to long-duration spaceflight
• Causes of osteoporosis, e.g. radiation therapy and medications
Research Topics: bone mechanics, finite element modeling, quantitative computed tomography, prosthetic implants, osteoporosis, metastatic tumors in bone, radiation therapy