- Nandana krishna R1, Dr. Aswathi Raj 1, Dr. Hridhya V T1, Mrs. Athuliya K 1, Mr. Mohan Kumar Thota1, Mrs. Bhavya Shree P2
- DOI: 10.5281/zenodo.15403447
- GAS Journal of Clinical Medicine and Medical Research (GASJCMMR)
This research aimed to establish
radiation Diagnostic Reference Levels (DRLs) for two commonly performed cardiac
catheterization procedures, coronary angiography (CAG) (diagnostic) and
percutaneous transluminal coronary angioplasty (PTCA) (therapeutic) at a
tertiary care hospital.
The study focused on patients who underwent
PTCA (200) and CAG (400) at our hospital between October 2024 and January 2025,
on the advanced interventional radiological machines and the population is
classified into two groups based on patient weight. Data collected are patient
age, weight, dose surface product (PKA), skin surface entry dose (KAR) and fluoroscopic time. According to ICRP
recommendations, the DRL was set for the entire population and was determined
from the 75th percentile of the PKA value for the corresponding weight category
in each procedure.
In this study, the DRL established for
the CAG and PTCA procedures is within the safety guidelines provided by the
hospital and the regulatory board. The DRL for the CAG group is 2834 µGym² and
for PTCA is 8963 µGym² which is within the limit.
It was observed that DRL linearly responds to the patient’s weight, concluding that patient weight is a factor affecting DRL. The DRL can serve as an audit tool for quality analysis and improvement.