Clinical trials: Artifacts
Intracranial Stenosis, Venous Sinus Stenosis
This Prospective Observational Study Aims to Evaluate the Capability of Ultra-high-resolution Photon-counting CT Angiography (UHR PCD-CTA) for Noninvasive Evaluation of Intracranial Venous Sinus Stents. The Study Will Compare Image Quality, Stent Visualization, Metal-related Artifacts, and Diagnosti
This prospective observational study aims to evaluate the effectiveness of ultra-high-resolution photon-counting CT angiography (UHR PCD-CTA) for noninvasive assessment of intracranial venous sinus stents.
- Conditions
- Intracranial Stenosis, Venous Sinus Stenosis, Stent Implantation, Intracranial Venous Pressures
- Trial name
- NCT07762677
- Where
- China
- Volunteers
- 200 people
- Sponsor
- Xin Lou
Transient Severe Arterial Phase Motion
Eovist vs. Dotarem Healthy Volunteer MRI
The purpose of this study is to evaluate changes in volunteer breath-holding capacity in response to gadoxetate disodium (Eovist) administration, compared with saline, and gadoterate dimeglumine (Dotarem).
- Trial name
- NCT02431598
- Testing
- gadoxetate disodium, gadoterate dimeglumine, Saline
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Duke University
Anxiety, Sedation
Preparing Kids for MRI Using VR
Children frequently exhibit pre-MRI anxiety that can cause motion, repeated sequences, prolonged room time, and exposure to sedation.
- Conditions
- Anxiety, Sedation, Child, Virtual Reality
- Trial name
- NCT07203716
- Testing
- Virtual Reality Orientation (Home+Booster), Virtual Reality Orientation (Pre-Scan Only), Usual Care (No VR)
- Volunteers
- 150 people
- Sponsor
- Haseki Training and Research Hospital
Anesthesia, General
Characterization of Artifacts in the BIS™ EEG Signals in General Anesthesia Patients in Operating Room
This is an observational non-invasive study which aims to collect data from patients under general anesthesia in the operating room; this data will then be used for characterization and detection of artifacts that affect the EEG…
- Trial name
- RAMBAM (NCT03553953)
- Testing
- BIS device
- Where
- Israel
- Volunteers
- 98 people
- Sponsor
- Medtronic - MITG
Underdamping/Resonance Artifacts
Dynamic Electronic Filter for Arterial Waveform Distortion
Invasive blood pressure (IBP) is the gold standard for arterial pressure (AP) monitoring in critically ill patients. Nevertheless, IBP may be affected by underdamping/resonance artifacts, that eventually lead to AP…
- Trial name
- NCT05166993
- Testing
- MostCareUp
- Where
- Italy
- Volunteers
- 70 people
- Sponsor
- University of Florence
Lower Urinary Tract Dysfunction
Urodynamic Assessment of the Lower Urinary Tract: Water vs. Air - Synchrony
Comparison of water-perfused (WP) and air-charged (AC) catheters for invasive urodynamic investigation (UDI) regarding consistency, features and artifacts.
- Trial name
- NCT04036123
- Testing
- Urodynamic investigation
- Where
- Switzerland
- Volunteers
- 50 people
- Sponsor
- University of Zurich
Metal Artifacts, Implant
Effect of FOV and mA on Metal Artifacts on CBCT
The aim of this study is to evaluate the effect of exposure parameters as milliampere (mA) and field of view (FOV) in CBCT on metal artifact of dental implant.
- Trial name
- NCT04935944
- Testing
- CBCT radiation
- Where
- Egypt
- Volunteers
- 4 people
- Sponsor
- Cairo University
Prosthetic Joint Infection, Unicompartmental Knee Arthroplasty
Metal Artifact Reduction Sequence MRI for Surgical Decision-Making in Infected Unicompartmental Knee Arthroplasty
A single-center retrospective cohort study was conducted in the Department of Orthopedics of Fujian Medical University Affiliated First Hospital.
- Trial name
- NCT07208968
- Where
- China
- Volunteers
- 28 people
- Sponsor
- First Affiliated Hospital of Fujian Medical University
Computed Tomography
Clinical Study for P-MAR
The purpose of this clinical study is to evaluate the performance of the P-MAR metal artifact reduction algorithm for CT imaging (with metal present) of adult patients (>18 years old). The study has two objectives: 1.
- Trial name
- Precise MAR (NCT07317479)
- Volunteers
- 120 people
- Sponsor
- Philips Clinical & Medical Affairs Global
Bone Anchored Devices, Osseo-Integrated Implants
Bone Conduction Implant and MRI
Bone conduction implants (BCI) are widely used in cases of conductive/ mixed hearing loss or single side deafness when surgical treatment or air hearing aids are not feasible.
- Conditions
- Bone Anchored Devices, Osseo-Integrated Implants, MRI Scans, Artifacts
- Trial name
- BAHA-IRM (NCT04448600)
- Testing
- MRI
- Where
- France
- Volunteers
- 20 people
- Sponsor
- Fondation Ophtalmologique Adolphe de Rothschild
Lung Cancer
Respiratory Adaptive Computed Tomography: Feasibility Study on Real-Time Gated 4DCT for Lung Cancer Radiotherapy
This study does not involve a therapeutic intervention as standard radiation therapy treatment will be prescribed. This study involves one additional 4DCT scan (i.e.
- Trial name
- REACT (NCT05030207)
- Testing
- Real-time Gated 4DCT, Conventional 4DCT
- Where
- Australia
- Volunteers
- 30 people
- Sponsor
- University of Sydney
Spinal Disease
CT Mar Technology and MR Mavric, Semac Sequence in Removing Artifacts of Orthopedic Metal Internal Fixation
1. Objective to compare the effect of single energy imaging and mar technology in reducing artifacts of knee and hip replacement, and to explore the appropriate keV range of Mar technology in removing metal artifacts.,2.
- Trial name
- NCT04954963
- Testing
- Reduce metal artifacts examination
- Where
- China
- Volunteers
- 50 people
- Sponsor
- Peking University Third Hospital
Cervix Neoplasm, Cervix, Dysplasia
Thermal Artifact in Patients Undergoing Conization: A Clinical Study
Cervical transformation zone excision is commonly used in the diagnosis and treatment of cervical intraepithelial neoplasia. Thermal artifacts can negatively affect histopathological evaluation.
- Trial name
- NCT07372248
- Testing
- Conization with Electrosurgery diffferent power settings
- Where
- Turkey (Türkiye)
- Volunteers
- 150 people
- Sponsor
- Saglik Bilimleri Universitesi
Coronary Artery Disease, CAD
Artifact-Free High-Resolution Myocardial Perfusion MRI in Subjects With Abnormal Nuclear Myocardial Perfusion Studies
This is a pilot study in a patient population with suspected coronary artery disease (CAD) as defined by the presence of a prior abnormal nuclear (PET/SPECT) myocardial perfusion scan.
- Trial name
- NCT01949844
- Testing
- regadenoson, Optimark®, Myocardial perfusion MRI
- Where
- United States
- Volunteers
- 44 people
- Sponsor
- Daniel S. Berman
Registration Accuracy
Assessment of the Artifical Intelligence Assisted Registration Versus Conventional Point Based Registration on Cone Beam-computed Tomography (CBCT) With Heavy Metal Artifacts
Our study investigates the accuracy and duration needed for 3D model registration using artifical intelligence (AI) assistance compared to conventional point-based registration.
- Trial name
- NCT06273332
- Testing
- AI-assisted registration, Point-based registration
- Where
- Egypt
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Pediatric Abdominal Pain
Intelligent Accelerated MRI for Pediatric Abdominal Pain
The goal of this observational study is to evaluate the effectiveness of an intelligent accelerated MRI technique in children with abdominal pain.
- Trial name
- IA-MRI (NCT07164651)
- Testing
- Accelerated MRI scanning
- Where
- China
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Yaqi Shen，MD，PhD
CT, Coronary Angiography
Effects of Heart Rates and Variability of Heart Rates on Image Quality of Dual-Source CT Coronary Angiography
The purpose of this study is to investigate the effects of heart rates (including maximum heart rate, average heart rate and minimum heart rate) and variability of heart rate on image quality of DSCT coronary angiography without…
- Trial name
- DSCT (NCT00632918)
- Where
- Taiwan
- Volunteers
- 149 people, healthy volunteers welcome
- Sponsor
- Far Eastern Memorial Hospital
Intensive Care Units, Neonatal, Infant, Newborn
Heterogeneity Index in Neonatologist-performed Lung Ultrasound in Neonates Receiving Respiratory Support - a Pilot Study
Lung ultrasound is an increasingly valuable diagnostic tool in neonatal intensive care due to its safety and accessability. This pilot study investigates whether a quantitative approach - the heterogeneity index, previously only…
- Conditions
- Intensive Care Units, Neonatal, Infant, Newborn, Infant, Premature, Point-of-Care Systems
- Trial name
- NPLUS HI (NCT07117513)
- Where
- 2 sites in Austria
- Volunteers
- 40 people
- Sponsor
- Medical University of Graz
Kidney Stones
Study to Look for Artifact on Computed Tomography (CT) Representing Kidney Stones
Patients suspected of having a kidney stone are usually evaluated by computed tomography (CT) scan. The investigators hypothesize that ultrasound (U/S) should be sufficient to evaluate kidneys for suspected renal stones.
- Trial name
- NCT01187745
- Testing
- CT Scan followed by ultrasound
- Where
- Canada
- Volunteers
- 52 people
- Sponsor
- Ottawa Hospital Research Institute
Post-Lung Transplantation Bronchiectasis
Lung Ultrasound Artefact Analysis for Exclusion of Acute Rejection in Lung Transplant Recipients
This study is being done to study a safe and non-invasive way to diagnose lung rejection and infection.
- Trial name
- NCT04582279
- Testing
- Lung ultrasound
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic