Reduction of radiation exposure and contrast material volume in coronary CT angiography with low tube voltage and iterative reconstruction technique

Reduction of radiation exposure and contrast material volume in coronary CT angiography with low tube voltage and iterative reconstruction technique - Reduction of radiation exposure and contrast material volume in coronary CT angiography with low tube voltage and iterative reconstruction technique

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000016069

Enrollment

Registered

2015-01-01

Start date

2014-09-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Coronary artery disease

Interventions

Conventional coronary CT angiography Coronary CT angiography with reduced radiation exposure and reduced contrast material volume using low tube voltage and iterative reconstruction technique

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Age equal to or more than 20 years 2. Scheduled to undergo a clinically indicated coronary CT angiography 3. Heart rate at coronary CT andiography equal to or lower than 65/min

Exclusion criteria

Exclusion criteria: 1. Prior coronary artery bypass graft (CABG) surgery 2. Contraindication to beta blocker agents or nitrates 3. Recent prior myocardial infarction 4. Prior pacemaker or internal defibrillator lead implantation 5. Tachycardia or significant arrhythmia 6. Impaired chronic renal function (serum creatinine >1.5 mg/dl) 7. Subjects with known anaphylactic allergy to iodinated contrast material 8. Pregnancy or unknown pregnancy status in subject of childbearing potential 9. Subject requires an emergent procedure

Design outcomes

Primary

Measure	Time frame
image quality	—

Countries

Japan

Contacts

Public ContactYoshitake Yamada

Keio University School of Medicine Department of Diagnostic Radiology

yamada@rad.med.keio.ac.jp03-3353-1211(+81-3-3353-1211)

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026