The diagnostic quality of CT pulmonary angiogram images in patients with the risk of pulmonary embolism

A clinical trial to compare the diagnostic quality of CT pulmonary angiogram images between standard and reduced doses of contrast agent in patients with the risk of pulmonary embolism

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

IRCT

Registry ID

IRCT20180203038595N1

Enrollment

Registered

2018-02-15

Start date

2018-10-07

Completion date

Unknown

Last updated

2018-03-26

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

Conditions

Pulmonary embolism. Pulmonary embolism

Interventions

Intervention 1: Control group: CT pulmonary angiography will be performed with the standard dose of contrast agent (100-120 cc), concentration of 320 mg/ml, and rotation period of 0.75 s for patients

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patient with the risk of pulmonary embolism Weight between 60 and 80 kg

Exclusion criteria

Exclusion criteria: Having acute heart failure Being CV-line for contrast agent injection

Design outcomes

Primary

Measure	Time frame
The enhancement of the contrast of the aortic arteries. Timepoint: After taking CT pulmonary angiogram images. Method of measurement: Based on Hansfild unit.;The enhancement of the pulmonary truncus. Timepoint: After taking CT pulmonary angiogram images. Method of measurement: Based on Hansfild unit.;The enhancement of the right and left main pulmonary arteries. Timepoint: After taking CT pulmonary angiogram images. Method of measurement: Based on Hansfild unit.	—

Measure

Time frame

The enhancement of the contrast of the aortic arteries. Timepoint: After taking CT pulmonary angiogram images. Method of measurement: Based on Hansfild unit.;The enhancement of the pulmonary truncus. Timepoint: After taking CT pulmonary angiogram images. Method of measurement: Based on Hansfild unit.;The enhancement of the right and left main pulmonary arteries. Timepoint: After taking CT pulmonary angiogram images. Method of measurement: Based on Hansfild unit.

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactMansoure Ahrari

Mashhad University of Medical Sciences

ahraim931@mums.ac.ir+98 915 113 1491

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026