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OP 72 Title PANORAMIC RADIOGRAPHy. DO DENTISTS SEE THE WHOLE IMAGE? Authors A. DELANTONI 1 Affiliations 1 Aristotle University of Thessaloniki, Faculty of Dentistry, Dept of dentoalveolar Surgery, Implant Surgery and Radiology, Thesaloniki, GREECE Body Objectives: The aim of our study was to evaluate the efficacy of dentists in diagnosing dental and non dental findings on panoramic radiographs. Methods: 150 panoramic radiographs with a variety of dental and non dental findings were selected from our clinic. The radiographs were selected for specific findings they had on them,which the viewers were expected to identify. 25 dentists were asked to view and mark their findings on a piece of paper. Besides the25 dentists, 2 general medical radiologists were asked to perform the same task. Results: From the 150 radiographs in the case of dental findings there was diagnostic agreement between dentists and radiologists of high levels (>95%) such as in cases of impacted teeth or cystic lesions, while in other cases such as periodontal condition or small caries lesions the agreement levels were not too high (
OP 73 Title ACCuRACy OF CbCT GREy VALuES FOR DENSITy ESTIMATIONS aBSTracTS OP 7 Authors R. PAuWELS 1 , O. NACKAERTS 1 , H. STAMATAKIS 2 , K. TSIKLAKIS 2 , A. WALKER 3 , H. bOSMANS 4 , R. bOGAERTS 5 , R. JACObS 1 , K. HORNER 6 , THE SEDENTEXCT PROJECT CONSOR 7 Affiliations 1 Oral Imaging Center, Faculty of Medicine, University of Leuven, LEUVEN, BELGIUM, 2 Department of Oral Diagnosis and Oral Radiology, School of Dentistry, University of Athens, Athens, Greece, ATHENS, GREECE, 3 Leeds Test Objects Ltd, BOUROUGHBRIDGE, UNITED KINGDOM, 4 Department of Radiology, University Hospitals Leuven, LEUVEN, BELGIUM, 5 Department of Experimental Radiotherapy, University Hospitals Leuven, LEUVEN, BELGIUM, 6 School of Dentistry, University of Manchester, Manchester Academic Health Sciences Centre, MANCHESTER, UNITED KINGDOM, 7 Listing of partners on www.sedentexct.eu, MANCHESTER, UNITED KINGDOM Body Objectives: The aim of this study was to investigate the use of CBCT grey values for density estimations by calculating the linear correlation with MSCT values as well as the grey value error after recalibration. Methods: A polymethyl methacrylate (PMMA) phantom was developed, containing inserts of different density: air, PMMA, hydroxyapatite (HA) 50 mg/cm3, HA 100, HA 200, and aluminum. The phantom was scanned on a range of CBCT devices and a MSCT device. Correlation between CBCT grey values and CT numbers was calculated, and the average error of the CBCT values was estimated in the medium-density range after recalibration. Results: Pearson correlation coefficients ranged between 0.7014 and 0.9996 in the full density range and between 0.5620 and 0.9991 in the medium-density range. The average error of CBCT voxel values in the medium density range was between 35 and 1562. Conclusion: Even though most CBCT devices showed a good overall correlation with CT numbers, large errors can be seen when using the grey values in a quantitative way. Although it could be possible to obtain pseudo-Hounsfield Units from certain CBCTs with reasonable accuracy, alternative methods of assessing bone quality should be further investigated. Keywords Cone-Beam Computed Tomography, Computer-Assisted Image Analys, Bone Density 75
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Program Overview Wednesday 13.06.20
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IMPORTANT NOTES Registration desk -
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CV Prof. Dr. med Rüdiger Lessig bo
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CV Dr. Martin Surbeck 1996-2002 Stu
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Thursday, 14.06.2012 | Main lecture
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Thursday, 14.06.2012 | Second lectu
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CV Franz Pfeiffer Age 38, born 25th
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CV Prof. Dr. bodo Kress 28th Septem
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Friday, 15.06.2012 | Main lecture h
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Friday, 15.06.2012 | Second lecture
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Saturday, 16.06.2012 | Main lecture
Page 24 and 25: 14.06.2012 | 09.00 - 17.00 | Poster
Page 26 and 27: p 34 G. aKciceK, S. aKSOY, K. Orhan
Page 28 and 29: p 67 K. GunduZ, P. celenK, h. aVSeV
Page 30 and 31: p 102 a. aSSaF, B. Kahl-nieKe, J. F
Page 32 and 33: OP 11 Title DEVELOPMENT OF THE SEDE
Page 34 and 35: OP 13 Title THE TRIAL OF REDuCING D
Page 36 and 37: OP 15 Title CbCT IMAGE ARTIFACTS RE
Page 38 and 39: OP 17 Title METAL ARTIFACT REDuCTIO
Page 40 and 41: OP 22 Title DENTAL AGE ESTIMATION A
Page 42 and 43: OP 24 Title A CEPHALOMETRIC MICROCO
Page 44 and 45: OP 26 Title CANINE ANGuLATION IN PA
Page 46 and 47: OP 31 Title ACCuRACy OF CbCT IN DET
Page 48 and 49: OP 33 Title GAIN OF INFORMATION ON
Page 50 and 51: OP 35 Title CONE-bEAM COMPuTED TOMO
Page 52 and 53: OP 41 Title CAPAbILITy OF ADIPOSE D
Page 54 and 55: OP 43 Title THE APPLICATIONS AND uS
Page 56 and 57: OP 45 Title MEASuREMENTS OF THE FOR
Page 58 and 59: OP 47 Title IR(ME)R REGuLATIONS:COM
Page 60 and 61: OP 52 Title EVALuATION OF THE PHySI
Page 62 and 63: OP 54 Title THE DESIGN OF FFT FILTE
Page 64 and 65: OP 56 Title CbCT REFORMATTED PANORA
Page 66 and 67: OP 61 Title RELIAbILITy OF VOXEL GR
Page 68 and 69: OP 63 Title CORRELATION OF MANDIbuL
Page 70 and 71: OP 65 Title ASSESSING bONE THICKNES
Page 72 and 73: OP 67 Title DOSIMETRy OF THREE CbCT
Page 76 and 77: OP 74 Title RADIOGRAPHIC ANALySIS O
Page 78 and 79: OP 82 Title DENTAL RADIOGRAPHy IN G
Page 80 and 81: OP 84 Title ECONOMIC EVALuATION IN
Page 82 and 83: OP 92 Title uLTRASONOGRAPHy OF MAJO
Page 84 and 85: OP 94 Title INFLuENCE OF THE REMNAN
Page 86 and 87: OP 96 Title INTRODuCTION TO uLTRASO
Page 88 and 89: OP 101 Title INTERNET bASED RADIO-A
Page 90 and 91: OP 103 Title ASSESSMENT OF ROOT CAN
Page 92 and 93: OP 105 Title CALCIFICATIONS IN CARO
Page 94 and 95: OP 107 Title DOSE REDuCTION IN PANO
Page 96 and 97: OP 112 Title AuDIT OF RADIOGRAPHIC
Page 98 and 99: OP 121 Title OPPORTuNITIES OF IMAGE
Page 100 and 101: OP 123 Title SEGMENTATION OF TRAbEC
Page 102 and 103: OP 132 Title WHICH THERAPEuTIC SIGN
Page 104 and 105: OP 134 Title 3T-MRI FOR THE EVALuAT
Page 106 and 107: OP 136 Title OSSEOuS AbNORMALITIES
Page 108 and 109: OP 141 Title GEOMETRIC ACCuRCy OF C
Page 110 and 111: OP 143 Title EFFECT OF ENHANCEMENT
Page 112 and 113: OP 145 Title CONE-bEAM COMPuTED TOM
Page 114 and 115: OP 147 Title PREVALENCE OF INCIDENT
Page 116 and 117: P 1 Title DENTAL STuDENT PERCEPTION
Page 118 and 119: P 3 Title DIAGNOSIS OF IMPACTED TEE
Page 120 and 121: P 5 Title MANDIbLE PERFORATION WITH
Page 122 and 123: P 7 Title ORAL&MAXILLOFACIAL TuMORS
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P 9 Title ELIMINATION OF DIAGNOSTIC
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P 11 Title FREQuENCy,CHARACTERISTIC
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P 13 Title ASSESSMENT OF ALVEOLAR b
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P 15 Title CONE bEAM CT REVEALING H
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P 17 Title FRACTAL DIMENSION ANALyS
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P 19 Title EFFECTS OF MANDIbuLAR AD
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P 21 Title COMPARISON OF FAT SuPPRE
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P 23 Title PANORAMIC VERSuS CbCT IM
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P 25 Title EFFECTIVENESS OF THE SIM
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P 27 Title ARTIFACTS IN CbCT CAuSED
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P 29 Title DIGITAL RADIOGRAPy EVALu
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P 31 Title DENTAL IMPLANT SITES MIC
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P 33 Title SIALOENDOSCOPy FOR SIALO
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P 35 Title uNDIFFERENTIATED SPONDyL
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P 37 Title EVAuLATION OF SOFT TISSu
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P 39 Title EFFECT OF TubE CuRRENT O
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P 41 Title zOLEDRONIC ACID AND RADI
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P 43 Title THE DOSES ACCORDING TO T
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P 45 Title MAXILLARy bONE IN FEMALE
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P 47 Title uSEFuLNESS OF IDEAL IN O
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P 49 Title DESCRIPTION OF REFERRAL
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P 51 Title ADJACENT TRANSCRESTAL SI
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P 53 Title MuLTIPLE bROWN TuMORS OF
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P 55 Title ARE WE SEEING THE WHOLE
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P 57 Title DENSITOMETRIC STuDIy ON
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P 59 Title RADIOLOGICAL ASSESSMENT
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P 61 Title COMPARISON OF D AND F SP
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P 63 Title ASSESSMENT OF TRAbECuLAR
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P 65 Title DISK MORPHOLOGy CHANGES
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P 67 Title THE INFLuENCE OF DIFFERE
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P 69 Title A RETROSPECTIVE STuDy OF
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P 71 Title CAN PTERyGOID PLATE ASyM
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P 73 Title CONE bEAM COMPuTED TOMOG
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P 75 Title NORMAL FACIAL ASyMMETRy
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P 77 Title COMPARISON OF HARD TISSu
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P 79 Title CbCT IN THE EVALuATION O
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P 81 Title KNOWLEDGE OF PANORAMIC A
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P 83 Title IS MEASuREMENT OF LENGHT
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P 85 Title bENIGN CEMENTObLASTOMA:
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P 87 Title GIANT SIALOLITH OF THE S
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P 89 Title INCIDENTAL FINDINGS ON O
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P 91 Title 3D ANALySIS OF MICROSTRu
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P 93 Title DIAGNOSTIC VALuE OF CONE
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P 95 Title EFFECT OF LOW-INTENSITy
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P 97 Title EVALuATION OF PANORAMIC
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P 99 Title RELATIONSHIP bETWEEN TON
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P 101 Title EVALuATION OF PANORAMIC
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P 103 Title AGE RELATED OSTEOPOROTI
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P 105 Title OSSEOuS AbNORMALITIES O
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