Randomized comparison of raDiatiOn exposure to operators in coronary angiography and percutaneous coronary intervention between right conventional and left distal radial artEry approach: a Single-Center, Randomized Study

INTERVENTION: Procedure/Surgery : In patients performing coronary angiography and intervention, whether to use the right radial artery approach or approach the left radial artery to perform the test is randomly assigned before the test. CONDITION: Diseases of the circulatory system PRIMARY OUTCOME: radiation exposure SECONDARY OUTCOME: Amount of contrast medium used the amount of X‐ray irradiation The surgeon's radiation exposure corrected by the X‐ray irradiation Time to stop bleeding Treatment success rate INCLUSION CRITERIA: 1) a patient over 20 years of age 2) a patient scheduled to undergo coronary angiography and intervention