Marcel Noujeim

ORCID: 0000-0003-1729-5485
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About
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Research Areas
  • Dental Radiography and Imaging
  • Advanced X-ray and CT Imaging
  • Endodontics and Root Canal Treatments
  • Dental Implant Techniques and Outcomes
  • Medical Imaging Techniques and Applications
  • Radiation Dose and Imaging
  • Oral and Maxillofacial Pathology
  • Periodontal Regeneration and Treatments
  • Orthodontics and Dentofacial Orthopedics
  • dental development and anomalies
  • Sinusitis and nasal conditions
  • Digital Radiography and Breast Imaging
  • Dental Research and COVID-19
  • Dental materials and restorations
  • Oral microbiology and periodontitis research
  • Forensic Anthropology and Bioarchaeology Studies
  • Cleft Lip and Palate Research
  • Bone Tumor Diagnosis and Treatments
  • AI in cancer detection
  • Facial Trauma and Fracture Management
  • Bone Metabolism and Diseases
  • MRI in cancer diagnosis
  • Medical Imaging and Analysis
  • Advanced MRI Techniques and Applications
  • Oropharyngeal Anatomy and Pathologies

The University of Texas Health Science Center at San Antonio
2009-2021

Comprehensive Clinical Research
2009-2021

Advanced Imaging Research (United States)
2021

The University of Texas Health Science Center at Houston
2015-2020

Bolu Abant İzzet Baysal University
2019

Marquette University
2019

Urology San Antonio
2019

University of Pennsylvania
2019

Rutgers, The State University of New Jersey
2019

Kocaeli Üniversitesi
2017

10.1016/j.tripleo.2005.07.027 article EN Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology 2005-11-12

Metal in a patient's mouth has been shown to cause artefacts that can interfere with the diagnostic quality of cone beam CT. Recently, manufacturer made an algorithm and software available which reduces metal streak artefact (Picasso Master 3D® machine; Vatech, Hwaseong, Republic Korea).The purpose this investigation was determine whether or not reduction effective enhanced contrast-to-noise ratio.A phantom constructed incorporating three metallic beads epoxy resin-based bone substitutes...

10.1259/dmfr/80899839 article EN Dentomaxillofacial Radiology 2012-02-06

Cone beam CT (CBCT) is used widely to depict root fracture (RF) in endodontically treated teeth. Beam hardening and other artefacts due gutta-percha may increase the time of diagnosis result an incorrect diagnosis. Two CBCT machines, ProMax(®) (Planmeca, Helsinki, Finland) Master 3D(®) (Vatech, Hwaseong, Republic Korea), have option applying artefact reduction (AR) algorithm. The aim this study was determine whether using AR algorithm two machines enhances accuracy detecting RFs teeth.66...

10.1259/dmfr.20120245 article EN Dentomaxillofacial Radiology 2013-03-22

The purpose of this study is to assess the accuracy limited-volume high-resolution cone beam CT (CBCT) in detection periodontal bone loss.163 simulated lesions different depths were created dried human hemimandibles. Specimens imaged using intraoral paralleling technique and CBCT (3DX Accuitomo; Morita Co. Ltd, Kyoto, Japan). Ten viewers examined images. Data analysed with receiver operating characteristics (ROC) analysis. ROC curves generated areas under maximum-likelihood (A(z)) compared....

10.1259/dmfr/61676894 article EN Dentomaxillofacial Radiology 2009-02-18

An algorithm and software to reduce metal artefact has been developed recently is available in the Picasso Master 3D® (VATECH, Hwaseong, Republic of Korea), which under visual assessment produces better quality images than were obtainable previously. The objective this vitro study was investigate whether reduction (MAR) 3D machine reduced incidence artefacts increased contrast-to-noise ratio (CNR) while maintaining same gray value when there no metallic body present within scanned volume.20...

10.1259/dmfr/43691321 article EN Dentomaxillofacial Radiology 2012-02-24

Each of three cone beam computed tomography (CBCT) machines offer a small field view (FOV); Promax, Accuitomo 3D, and Kodak 9000. The objectives were to determine, when using FOV, the difference in contrast-to-noise ratios (CNR) images obtained from different scan settings within each machine. A phantom made dry mandible with an epoxy resin based substitute (ERBS) block was used. ERBS fixed lingual cortex posterior left mandible. Water used simulate soft tissue. Twenty scans acquired. CNR...

10.2334/josnusd.54.227 article EN Journal of Oral Science 2012-01-01

To date, limited evidence is available specifically evaluating ridge preservation (RP) and implant placement in molar sites. The primary aim of this study to radiographically compare alveolar changes with without RP cone-beam computed tomography (CBCT).This parallel, two-arm randomized clinical trial included 40 patients evenly distributed between two treatment groups. After extraction, sites were allowed heal naturally or received freeze-dried bone allograft covered by a non-resorbable...

10.1902/jop.2016.160445 article EN Journal of Periodontology 2016-10-28

Aim: To evaluate the influence of kilovoltage (kVp) and metal artifact reduction tool (MAR) on magnitude cone beam CT (CBCT) artifacts. Methods: A titanium zirconia implants were inserted alternately in a posterior region mandible. CBCT exams acquired with ProMax 3D (Planmeca Oy, Helsinki, Finland) Picasso Trio machines (Vatech, Hwaseong, South Korea) using 70 kVp, 80 kVp 90 without MAR activation. The other exposure factors remained fixed at 5mA, field view × 50 mm voxel 0.20 mm. scans...

10.1259/dmfr.20180151 article EN Dentomaxillofacial Radiology 2018-06-19

To evaluate the magnitude of artifacts related to titanium and zirconium implants at different distances angulations their impact on cone beam CT(CBCT) image quality.CBCT images were obtained before after insertion in a mandible CBCT units: Picasso Trio, ProMax 3D Accuitomo 80. Artifact was assessed by measuring standard deviation (SD) gray values contrast-to-noise ratio (CNR) 11 regions interest (ROIs) (1.5 cm, 2.5 cm 3.5 cm) (65°, 90°, 115° 140°) from implant region.For images, SD did not...

10.1259/dmfr.20180021 article EN Dentomaxillofacial Radiology 2018-04-18

The purpose of this study was to evaluate and compare the efficacy cone-beam computed tomography (CBCT) digital intraoral radiography in diagnosing simulated small external root resorption cavities.Cavities were drilled 159 roots using a spherical bur at different levels on all surfaces. teeth imaged both with image plates CBCT. Two sets images acquired per tooth: orthogonal (PA) which conventional periapical radiograph mesioangulated (SET). Four readers asked rate their confidence level...

10.5624/isd.2015.45.3.153 article EN cc-by-nc Imaging Science in Dentistry 2015-01-01

Two-dimensional intraoral radiography is the most common tool for diagnosing root fractures (RFs). Cone beam CT (CBCT) widely used to depict RFs in endodontically treated teeth. Beam hardening and other artefacts caused by gutta percha may result an incorrect diagnosis when using CBCT only. A comparison of two machines with photostimulated phosphor (PSP) plate images enhanced equalization was carried out detect teeth.66 roots were collected, decoronated same technique percha. 33 these...

10.1259/dmfr.20120404 article EN Dentomaxillofacial Radiology 2013-04-27

The purpose of this study was to compare extraoral panoramic bitewings (BWs) intraoral photostimulable phosphor (PSP) plate BWs for the detection proximal surface caries and establish if there any difference between BWs, radiographs in visualizing open posterior interproximal contacts.Extraoral BW images were acquired on each 20 patients, resulting 489 total non-restored, readable surfaces that evaluated by 4 observers. ANOVA analysis determine diagnostic variability within subject utilized....

10.1259/dmfr.20150159 article EN Dentomaxillofacial Radiology 2016-02-12

The objective of this study was to develop a new practical method reconstruct high-quality panoramic image in which radiographers would be free from the onerous task correctly locating patient's jaws within layer unit. In addition, dentists able freely select any plane reconstructed after acquisition raw scan data. A high-speed data device used with CdTe (cadmium telluride) semiconductor detector and sophisticated digital signal-processing technique based on tomosynthesis developed. system...

10.1259/dmfr/12999660 article EN Dentomaxillofacial Radiology 2010-01-01

Buccal plate thickness is of clinical importance in treatment planning for implants. The purpose this study was to evaluate the buccal posterior dentate areas both maxilla and mandible using cone beam computed tomography order estimate approximate distributions anatomic variable.Two hundred sixty-five subjects were included a total nine thirty-four roots assessed by tomography. CBCT scans taken evaluated at ideal buccolingual cross-sections each root 1 mm, 3 5 mm apical alveolar crest...

10.1111/clr.12688 article EN Clinical Oral Implants Research 2015-09-14

Behrents KT, Speer ML, Noujeim M . Sodium hypochlorite accident with evaluation by cone beam computed tomography. International Endodontic Journal , 45 492–498, 2012. Abstract Aim To show the radiographic manifestation of sodium after accidental injection past apical foramen and into soft tissues. Summary A female patient was seen for an emergency visit suffering a at her general dentist’s office. The within 1 h in pain associated facial swelling. Radiographs, including Cone Beam Computed...

10.1111/j.1365-2591.2011.02009.x article EN International Endodontic Journal 2012-01-27
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