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Clinical Trials About "Diagnostic accuracy cone beam computed tomography used assessment" RSS

20:08 EDT 21st March 2019 | BioPortfolio

We list hundreds of Clinical Trials about "Diagnostic accuracy cone beam computed tomography used assessment" on BioPortfolio. We draw our references from global clinical trials data listed on ClinicalTrials.gov and refresh our database daily.

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Showing "Diagnostic accuracy cone beam computed tomography used assessment" Clinical Trials 1–25 of 14,000+

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Cone Beam Computed Tomography for Breast Imaging

The primary aim of this study is to investigate the use of cone beam computed tomography (CBCT) for breast imaging in the diagnostic setting by providing a compelling body of evidence incorporating both non-contrast and contrast enhanced CBCT in the study protocol. The goal is to accumulate a body of evidence to provide data to incorporate CBCT into the diagnostic work-up of breast lesions.


Interest of the Cone-beam Computed Tomography in the Imagery of the Middle Ear

Cone beam computed tomography (CBCT), is a recent medical imaging technique where the X-rays are divergent, forming a cone. As a result, this technique is less irradiating that the scanner. The purpose of this exploratory study is to compare the performance of the scanner and the cone beam in the detection of anatomical structures of the ear.

Cone Beam Computed Tomography for Breast Imaging

The primary aim of this study is to continue the investigation of cone beam computed tomography (CBCT) for breast imaging already underway in the diagnostic setting by providing a compelling body of evidence incorporating non-contrast CBCT in the study protocol. The goal is to accumulate a body of evidence to provide data to incorporate CBCT into the diagnostic work-up of breast lesions.


Cone Beam CT Versus Multislice CT in the Postoperative Assessment of Cochlear Implantation

Objective: To evaluate the diagnostic concordance between multislice computed tomography (MSCT) and cone beam computed tomography (CBCT) in the early postoperative assessment of patients after cochlear implantation. Study Design: Prospective, randomized, single-center, interventional, pilot study on the diagnostic performance of a medical device. Setting: Tertiary referral center. Patients: Patients aged over 18 years requiring a CT scan after cochlear implant surgery. ...

C-arm Cone Beam CT Perfusion Guided Cerebrovascular Interventions

The overarching objective of our proposal is to develop a One-Stop-Shop imaging using the available C-arm Cone-Beam Computed Tomography (CBCT) data acquisition systems currently widely available worldwide in interventional angiography suites to enable acute ischemic stroke patients to be imaged, triaged, treated, and assessed using a single modality in one room.

Cone Beam Computed Tomography (CT) Bladder

This study is designed to investigate whether daily images of the pelvis and bladder using a device called a cone beam CT scanner will help to increase the accuracy of radiotherapy treatment. The cone beam CT scanner is a part of the radiotherapy treatment unit. The results of the study may allow patients in the future who are undergoing radiotherapy treatment for bladder cancer to 1) have more accurately directed treatment, 2) have higher doses of radiation delivered to the tu...

Multiple Respiration-Correlated Cone Beam Computed Tomography (CT) Scans to Reduce Target Positioning Errors in Radiotherapy Treatment of Thoracic Cancer

The purpose of this study is to use cone-beam CT scans to more accurately position the tumor during radiation and to see whether this method is more effective than the standard method of using 2D images (portal images), which is a type of X-ray. Cone-beam CT is a type of CT scanner attached to the treatment accelerator that produces 3D images of the patient. The ability to eliminate the tumor with radiation depends in part on the accuracy of delivering the radiation to the lun...

Assessment of Cone-beam Computed Tomography (CBCT) Assistance to Video-assisted Thoracoscopic Surgery

In the coming years, an increase in lung nodule resection is expected, particularly in Video-assisted thoracoscopic surgery (VATS). In some situations, it is necessary to use a device for locating these nodules. Meanwhile, the Cone Beam Computed Tomography (CBCT) is a tool whose use is constantly spreading.

Accuracy of Linear Measurements of Ultra-low Dose Cone Beam Computed Tomography and Digital Panoramic Radiography

measurements performed directly on dry mandibles will be compared with measurements obtained from CBCT( ultra-low dose) scans and Digital panoramic radiography.

Effect of Different Voxel Sizes on Accuracy of CBCT Linear Measurements: Preclinical Study

study target is assessment of the accuracy of linear measurement obtained from CBCT images on 3D volumetric rendering and multiplanar slices with different voxel sizes

Helical CT, PET/CT, MRI, and CBCT Alone or in Combination in Predicting Jaw Invasion in Patients With Oral Cancer

This clinical trial studies how well helical computed tomography (CT), positron emission tomography (PET)/CT, magnetic resonance imaging (MRI), and cone beam computed tomography (CBCT) work alone or in combination in predicting whether tumor cells have spread to the jaw bone (jaw invasion) in patients with oral cancer. Imaging, such as helical CT, PET/CT, MRI, and CBCT, may help find out how far cancer has spread. Accurate prediction of the presence or absence of jaw invasion m...

The Use Of Specially Designed Probe Versus Cone- Beam Computerized Tomography In The Measurement Of Gingival Thickness: Diagnostic Accuracy Study

Accurate measurement of gingival thickness is crucial for decision making in the field of Periodontology and implant dentistry. Currently implemented techniques for the detection of gingival biotype are of limited reliability. They possess different drawbacks leading to the necessity for the development of a new method to overcome disadvantages of the available techniques. the rational of this study is to determine the accuracy of a specially designed probe in comparison...

Use of Cone Beam Kilovaltage Imaging in Patients Receiving Radiation Therapy for Head and Neck Cancer

To evaluate the use of cone beam computed tomography in treating head and neck to hopefully reduce side effects

A New Guide for Our Guided-Bronchoscopy: The Use of Cone-Beam CT to Enhance Navigation and Diagnostic Yield of RP-EBUS and Hybrid Bronchoscope for Peripheral Lung Nodules Suspicious for Malignancy

The goal of this clinical research study is to find out if adding a Cone-Beam CT (CBCT) scan during a scheduled bronchoscopy can help researchers biopsy lung lesions that are harder to reach. CBCT is a newer type of CT scan that researchers will use to make sure the tools used to biopsy these lesions (called a bronchoscope and a radial probe-EBUS [RP-EBUS]) are in the right location. The safety and feasibility of adding this extra scan to a standard bronchoscopy will als...

Assessment of the Variations in the Root Canal System of the Permanent Mandibular First and Second Molars Among Egyptian Population Using Cone Beam Computed Tomography

A cross-sectional study to estimate Variations in the Number of Roots and the Root Canal System of the Permanent Mandibular First and Second Molars in a Sample of Egyptian Population using cone beam computed tomography through retrospective data analysis

Diagnosis of Decreased Bone Density by Dental Cone Beam Computed Tomography

The purpose of this study is to elucidate the role of Dental Cone Beam Computed Tomography (CBCT) in assessment of bone density. The study population contains men and women above the age of 60 years, eligible for Bone Density Testing in accordance with their health insurance, who underwent a Dental CBCT recommended by their Dental Practitioner. Any patient (eligible for bone density screening by age criteria) undergoing CBCT of either one of the jaws (or both) due to dental rea...

Effect of Metal Artifacts Reduction Orotocols and Electric Potential Difference on Metal Artifacts in Cone Beam Computed Tomography

The effect of metal artifacts reduction protocols and tube potential difference on the metallic artifacts in cone beam computed tomography

Cone Beam Computed Tomography Following Thrombectomy

Cerebral haemorrhages following reperfusion treatments involve not only rupture of the blood-brain barrier, but also direct damage to vessels related to the equipment used and secondary toxicity to thrombolytics. The rupture of the blood-brain barrier which results from ischemia / reperfusion is responsible for stagnation of the contrast product on the exams performed after thrombectomy. It is difficult to distinguish hyperdensities related to the stagnation of contrast product...

Iodine Content for Diagnostic AccuRacy and Patient Comfort For Individuals Undergoing Cardiac Computed Tomography (CT) Scanning

The purpose of the study is to evaluate diagnostic performance of high iodine (iopamidol 370 mg/dl) content versus low iodine (iodixanol 300 mg/dl) content for diagnostic accuracy by contrast-enhanced Coronary Cardiac Computed Tomography (CCTA) using a 64-detector-row CT scanner for detection of presence or absence of coronary artery obstruction when compared against invasive coronary angiography, the standard of truth.

Low-dose Whole Body Computed Tomography Scanning

Computed tomography represents the mainstay for diagnosing various diseases in the whole body. Over the past decade, enormous efforts were undertaken by both CT manufacturers and radiologist to reduce the radiation dose to patients. Today, the dose is significantly lower that it was before the era of multislice CT and iterative reconstruction methods. The X-ray beam originating from the tube in a CT system contains a spectrum of different energies, whereby the "harder" beams wi...

A Cone-beam Computed Tomography Study of Root and Root Canal Morphology of Maxillary Premolars in an Egyptian Subpopulation

to date there is no detailed examination of the root and root canal system of maxillary first and second premolars in an Egyptian subpopulation. in this study the investigators do an Observational analysis of available records of cone-beam computed tomography (CBCT) of root and canal morphology in the permanent maxillary first and second premolars in this population

4D Cone Beam CT Reconstruction for Radiotherapy Via Motion Vector Optimization

To validate a new 4D Cone Beam CT (4DCBCT) reconstruction algorithm that was developed in our research group recently in terms of its geometry and intensity accuracy through real patient studies. Dose calculation found out in this study will not be used on the subject

KV-CBCT and Ultrasound Imaging in Guiding Radiation Therapy in Patients With Prostate, Liver, or Pancreatic Cancer

This clinical trial studies if kilo-voltage cone beam computed tomography (KV-CBCT) and ultrasound imaging works in guiding radiation therapy in patients with prostate, liver, or pancreatic cancer. Computer systems, such as KV-CBCT and ultrasound imaging, allow doctors to create a 3-dimensional picture of the tumor may help in planning radiation therapy and may result in more tumor cells being killed.

Head and Neck Maskless Immobilization Device in Immobilizing Patients With Intracranial Tumors Undergoing Radiation Therapy

This pilot clinical trial studies how well head and neck maskless immobilization device works in immobilizing patients with intracranial tumors undergoing radiation therapy. Maskless immobilization device may help to prevent movement of head during radiation therapy and immobilize patients with the same accuracy and reliability as the standard thermoplastic mask routinely used for patients with brain tumors receiving radiation therapy.

Cone Beam Computed Tomography for Evaluating Corticotomy-assisted Maxillary Expansion

Maxillary expansion was performed for adult female patients suffering from maxillary constriction with bilateral posterior cross-bite using fixed Quad-helix appliance, for about 8 months. The appliance was delivered and activated at the day of corticotomy and bone graft. The activation was made half-molar unit each side. The patient was scheduled each month to activate the appliance or reactivate if needed. Corticotomy was performed at area of maxillary 1st premolar, 2nd premol...


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