Effect of Simultaneous Injection of Contrast Material and Saline on Image Quality in Contrast-Enhanced CT

Evaluation of the Effect of Simultaneous Injection of Contrast Material and Saline on Image Quality in Contrast-Enhanced CT

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT1042250201

Enrollment

100

Registered

2026-03-11

Start date

2026-03-17

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

All conditions requiring body contrast-enhanced CT

Interventions

Written informed consent will be obtained from participants who are considered potentially eligible for this study. Participants will then be randomly assigned to undergo either the conventional contr

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1Patients aged 18 years or older at the time of obtaining informed consent (regardless of sex). 2Patients scheduled to undergo contrast-enhanced CT at the time of obtaining informed consent. 3Patients who have provided written informed consent.

Exclusion criteria

Exclusion criteria: 1Patients weighing over 80 kg at the time of informed consent. 2Patients with a history of allergy-like reactions to contrast media. 3Pregnant patients. 4Patients with eGFR < 30 mL/min/1.73 m2. 5Patients who are deemed unsuitable for participation in this study by the investigator for any other reason.

Design outcomes

Primary

Measure	Time frame
Quantitative evaluation: CT attenuation values, image noise, and signal-to-noise ratio (SNR). Qualitative evaluation: Visual assessment by radiologists, including image quality, lesion and organ conspicuity, and diagnostic performance.	—

Contacts

Public ContactYoshifumi Noda

Graduate School of Medicine, Gifu University

noda.yoshifumi.g9@f.gifu-u.ac.jp+81-58-230-6437

Outcome results

None listed

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