Clinical trials: Artifacts
MRI, MRI Image Enhancement
Optimizing Liver MRI Using Breath-Holding With and Without Oxygen
The goal of this interventional study (clinical trial) is to learn if different breath-holding techniques, with and without extra oxygen, can improve the quality of abdominal Magnetic Resonance Imaging (MRI) images in healthy…
- Trial name
- NCT07135401
- Testing
- Breath-hold conditions
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Heart Disease
MR Compatible Accelerometer for Respiratory MOTion Measurement
A novel magnetic resonance (MR) compatible accelerometer for respiratory motion sensing (MARMOT) has been developed as a surrogate of the vendors' pneumatic belts.
- Trial name
- MARMOT (NCT02894632)
- Testing
- MRI compatible motion sensor (MARMOT)
- Where
- France
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Central Hospital, Nancy, France
COPD
Forced Oscillation Technique (FOT) and Expiratory Flow Limitation (EFL)
The aim of this study is to distinguish COPD patients with expiratory flow limitation in body plethysmography (open loop) from the patients without expiratory flow limitation in body plethysmography (closed loop) with the…
- Trial name
- NCT00499304
- Where
- Netherlands
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Medical Center Alkmaar
Peripheral Arterial Occlusive Disease
Isovue in Peripheral Digital Subtraction Angiography (DSA)
No significant differences is expected in observed motion artifacts, heat or pain reported during peripheral DSA performed for diagnostic and/or endovascular therapeutic purposes.
- Trial name
- NCT01075217
- Testing
- iopamidol, iodixanol
- Where
- United States
- Volunteers
- 174 people
- Sponsor
- Bracco Diagnostics, Inc
Heart Diseases
Effect of Snapshot Freeze on Cardiac CT Image Quality
The aim of this study was to investigate the effect of a new motion correction algorithm on image quality and diagnostic utility in unselected patients undergoing coronary cardiac computed tomography, and to investigate if this…
- Trial name
- NCT02618473
- Testing
- non-seloken
- Where
- Denmark
- Volunteers
- 140 people
- Sponsor
- Odense University Hospital
Breast Cancer, Interventional Radiology
Using Color Doppler US Artifact to Identify Tumor Markers
Before neoadjuvant chemotherapy (NACT) in cases of locally advanced breast cancer, malignant masses in the breast and biopsy-proven tumor involvement axillary lymph nodes are marked with metallic markers.
- Conditions
- Breast Cancer, Interventional Radiology, Doppler Ultrasound
- Trial name
- NCT06166173
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people
- Sponsor
- Istanbul Medeniyet University
Breast Cancer Female
Low Energy Dissection Vs. Electrocautery in Lumpectomy Shaved Surgical Margins
The purpose of this study is to compare the qualitative severity and depth of dissection devices' associated thermal artifact in breast lumpectomy shaved margins between the use of electrocautery and low thermal energy…
- Trial name
- NCT03718442
- Testing
- PhotonBlade vs Bovie for lumpectomy shaved surgical margins
- Volunteers
- 20 people
- Sponsor
- Invuity, Inc.
Spinal Disease
Virtual Single-energy Imaging and De-metallic Artifact Technology in Reducing Spinal Metallic Artifacts
1. Compare the effect of virtual single energy imaging and virtual single energy combined with MAR technology to remove metal artifacts in the spine. 2.
- Trial name
- NCT04955483
- Testing
- Virtual single energy combined with MAR reconstruction group
- Where
- China
- Volunteers
- 43 people
- Sponsor
- Peking University Third Hospital
Healthy
EEG and Auditory Evoked Potentials During Local Anesthesia
The aim of the present study was to investigate the sensitivity of AEP (auditory evoked potentials) to muscular artefacts using sedation and local anesthesia.
- Trial name
- NCT00408941
- Testing
- Propofol, Prilocaine
- Where
- Germany
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Technical University of Munich
Movement Artifacts During SpO2 Measurements, Reduced Perfusion During SpO2 Measurements
SpO2 Measurement Depending on Different Pulse Oximeter Averaging Time Settings
The aim of this study is to characterize the noise in the SpO2 signal depending on different pulse oximeter averaging time settings.
- Trial name
- NCT04933773
- Testing
- Movement artifact - knocking, Movement artifact - tremor, Artifact - ambient light
- Where
- Czechia
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Czech Technical University in Prague
Breast Cancer
A Single-Center, Retrospective Study to Improve the Visibility of Breast Tissue Marker Clips in Breast Tissue and Axillary Lymph Nodes Using the Color Doppler Twinkling Artifact
This single-center, retrospective study aims to evaluate the utility of the color Doppler twinkling artifact feature in improving the visibility of breast tissue marker clips within breast tissue and axillary lymph nodes.
- Trial name
- NCT07554781
- Volunteers
- 86 people
- Sponsor
- Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Hearing Implants, Implant Hearing Artefact
Analysis and Reducing Modalities for Artefacts Generated by Bone Conduction Implants and Cochlear Implants Subjected to an MRI Magnetic Field
Investigator team hypothesize that artifacts generated by the presence of an acoustic implant subjected to the magnetic field of the MRI are variable depending on the type of sequence and can be reduced by structural…
- Trial name
- Artefact (NCT04116788)
- Testing
- Artefact IRM assessment
- Where
- France
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- GCS Ramsay Santé pour l'Enseignement et la Recherche
Coronary Stenosis, Aortic Valve Stenosis
Impact of Fast-rotation Coronary CT in Patients Undergoing Aortic Stenosis Workup
This study aims to evaluate the clinical value of a novel CT gantry supporting a .23 second rotation time and systematically compare it with 0.23 second rotation time, in patients with clinically indicated aortic CTA in the…
- Conditions
- Coronary Stenosis, Aortic Valve Stenosis, Cardiovascular Diseases
- Trial name
- FAST-CCT (NCT05709652)
- Testing
- Aortic CTA, .23s, Aortic CTA, .28s
- Where
- Switzerland
- Volunteers
- 124 people
- Sponsor
- David C. Rotzinger
Stereotactic Body Radiation Therapy, Lung Lesions
Impact of a Hypnotic Recording on Artifacts in 4D CT in the Context of Stereotactic Body Radiation Therapy for Lung Cancer
This is a single-center prospective cohort study evaluating the impact of a simple audio recording hypnosis system on the occurrence of artifacts on 4D CT scans in patients requiring SBRT radiotherapy for lung lesions (peripheral…
- Trial name
- HYPNOCT-4D (NCT07334990)
- Testing
- Hypnotic record
- Volunteers
- 25 people
- Sponsor
- Centre Leon Berard
Movement, Involuntary
NIBP (Non-invasive Blood Pressure) Algorithm Enhancements (Characterize the Robustness of Motion Artifact Suppression)
The study intervention consists of a non-invasive blood pressure (NIBP) measurement device and cuff (FDA-cleared Philips IntelliVue X3 Rev.
- Trial name
- NCT05185037
- Testing
- Philips IntelliVue X3 patient monitor with investigational NIBP measurement algorithm (measured once per 3 minutes)
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Philips Clinical & Medical Affairs Global
Healthy
Magnetic Resonance Imaging of the Brain in Emotional Processing
This study will use magnetic resonance imaging (MRI) to identify brain regions involved in performing certain tasks, especially those involving emotions.
- Trial name
- NCT00061204
- Where
- United States
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)