Related Experiment Video
Updated: May 29, 2025
Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
Published on: December 6, 2024
[Multicenter Survey of Exposure Dose in Coronary Artery Angiography and IVR]
Kazuki Maekawa1, Masakazu Sato1, Toshihiro Hayashi1
1Department of Radiology, University of Tokyo Hospital.
Purpose:
In DRLs 2020, in addition to the fluoroscopic dose rate, air kerma at the patient entrance reference point (Ka,r) and air kerma-area product (PKA) by types of medical treatment and diseases were set as DRL quantity. We surveyed the current equipment setting dose at each facility and the exposure dose in clinical practice. We considered the optimal DRL classification of Ka,r and PKA for the next DRLs update.
Methods:
We conducted a questionnaire survey of 428 facilities in Japan with angiography devices and analyzed the obtained angiography dose data.
Results:
Fluoroscopic dose rate, Ka,r, and PKA were lower values compared to past studies and DRLs 2020 data, and significant differences were observed in Ka,r and PKA by procedure.
Conclusion:
Equipment setting doses have been optimized at each facility, and it is expected that radiological protection will be optimized by setting DRL values that reflect the current situation.
Related Concept Videos
01:20Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
01:13Radiological Investigation III: Pulmonary Angiogram and PET Scan
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...