Skip to content

Observational Study on Patch-Based Respiratory Phase Matching Method for Digital Subtraction Angiography under Spontaneous Respiration

Observational Study on Patch-Based Respiratory Phase Matching Method for Digital Subtraction Angiography under Spontaneous Respiration - Observational Study on Patch-Based Respiratory Phase Matching Method for Digital Subtraction Angiography under Spontaneous Respiration

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000054327
Enrollment
20
Registered
2024-05-07
Start date
2023-02-09
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

Patients with hepatocellular carcinoma, cirrhosis, portal hypertension

Interventions

None listed

Sponsors

Chiba university
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Patients with hepatocellular carcinoma or with conditions of cirrhosis or portal hypertension 2) Patients who have undergone TACE between July 1, 2022 and December 31, 2024, and for whom moving images are stored 3) Patients who have undergone hepatic venography between July 1, 2022 and December 31, 2024, and for whom moving images are stored.

Exclusion criteria

Exclusion criteria: 1) With unclear images 2) Those with missing values

Design outcomes

Primary

MeasureTime frame
Effectiveness of artifact reduction compared to conventional DSA images (5-point scale) The evaluation will be carried out by two doctors with either gastroenterology, hepatology, or radiology expertise. The reduction effect will be evaluated on a three-point scale based on whether the contrast effect of the following structures can be visually confirmed for both the conventional method and the test method, and the total score will be calculated. (1)Angiography during TACE treatment Tumor contrast effect 0,Insufficient (unknown structure) 1,Standard (unclear structure) 2,Sufficient (clear structure) Hepatic artery contrast effect 0: Up to 1st branch 1: Up to 2nd branch 2: Up to 3rd branch Diaphragm artifact 0,Present 1,Partially present 2,Absent Intestinal gas artifact 0,Present 1,Partially present 2,Absent (2)Angiography during hepatic venography Hepatic vein contrast effect 0,Up to 1st branch 1,Up to 2nd branch 2,Up to 3rd branch Diaphragm artifact 0,Present 1,Partially present 2,Absent Intestinal gas artifact 0,Present 1,Partially present 2,Absent

Countries

Japan

Contacts

Public ContactHidem Unozawa

Chiba University Hospital Gastroenterology

unozawa.hidemi@chiba-u.jp43222717

Outcome results

None listed

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