[Survey Report on Assistant Work of Radiological Technologist During Angiography and Intervention Radiology Procedure].

Purpose: Investigating the status and challenges associated with radiological technologists acting as assistants during angiography and interventional radiology (IVR) through task shift/share.

Methods: The survey period was from August 1, 2023 to September 30, 2023. A 10-item questionnaire survey was conducted nationwide, targeting 676 hospitals equipped with angiography facilities.

[Multicenter Follow-up Survey on Radiation Dose Levels in Cardiovascular X-ray Apparatus under Percutaneous Coronary Intervention Conditions].

It is important to optimize the exposure dose when conducting interventional radiology, but optimization is difficult for medical centers to achieve independently. In 2005, we administered a questionnaire on the measurement of dose rates and awareness of exposure reduction when performing percutaneous coronary intervention. Ten years later, we conducted a follow-up survey of the same 31 centers to determine the current situation and identify trends.

[Multicenter Survey on Radiation Dose of Cardiac Intervention].

We conducted a nationwide survey of multiple institutions and collected data of various interventional procedures in the field of cardiology. Included in the analysis were 126 institutions, 381 X-ray systems, and 805 protocols. The dose values were compared with the Japanese diagnostic reference levels (DRLs) 2015.

A new reference point for patient dose estimation in neurovascular interventional radiology.

In interventional radiology, dose estimation using the interventional reference point (IRP) is a practical method for obtaining the real-time skin dose of a patient. However, the IRP is defined in terms of adult cardiovascular radiology and is not suitable for dosimetry of the head. In the present study, we defined a new reference point (neuro-IRP) for neuro-interventional procedures.

Current status of intensity-modulated radiation therapy (IMRT).

External-beam radiation therapy has been one of the treatment options for prostate cancer. The dose response has been observed for a dose range of 64.8-81 Gy.

[Accuracy of quantitative coronary angiography for different directions of the coronary artery].

We evaluated the effect of changes in the direction of the coronary artery in terms of the accuracy and precision of vessel diameter measurement in a quantitative coronary angiography system (QCA system). Vessel phantoms sized 0.3, 0.