ESTIMATION OF PATIENT LENS DOSE ASSOCIATED WITH C-ARM CONE-BEAM COMPUTED TOMOGRAPHY USAGE DURING INTERVENTIONAL NEURORADIOLOGY

Abstract The purpose of this study was to investigate the dose distribution and lens doses associated with C-arm cone-beam computed tomography (CBCT), using a head phantom, and to estimate the contribution ratio of C-arm CBCT to each patient’s lens dose during interventional neuroradiology (‘lens dose ratio’) in 109 clinical cases. In the phantom study, the peak skin doses and respective right and left lens doses of C-arm CBCT were as follows: 63.0 ± 1.9 mGy, 19.7 ± 1.4 mGy and 21.9 ± 0.8 mGy in whole brain C-arm CBCT and 39.2 ± 1.4 mGy, 4.7 ± 0.9 mGy and 3.6 ± 0.3 mGy in high-resolution C-arm CBCT. In the clinical study, the lens dose ratios were 25.4 ± 8.7% in the right lens and 19.1 ± 9.8% in the left lens. This study shows that, on average, ~25% of patients’ total lens dose was contributed by C-arm CBCT.

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Comparative analysis of accuracy of periapical radiography and cone beam computed tomography in diagnosing complex endodontic pathoses using a gold standard reference – A prospective clinical study

International Endodontic Journal ◽

10.1111/iej.13535 ◽

2021 ◽

Author(s):

G Keerthana ◽

N Singh ◽

R Yadav ◽

J Duhan ◽

S Tewari ◽

...

Keyword(s):

Computed Tomography ◽

Comparative Analysis ◽

Clinical Study ◽

Cone Beam Computed Tomography ◽

Gold Standard ◽

Cone Beam ◽

Prospective Clinical Study ◽

Gold Standard Reference ◽

Periapical Radiography

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Intrusion of maxillary molar roots into the maxillary sinus in a sample of the Egyptian population using cone beam computed tomography

Egyptian Journal of Radiology and Nuclear Medicine ◽

10.1186/s43055-021-00540-y ◽

2021 ◽

Vol 52 (1) ◽

Author(s):

Esraa Ahmed Eid ◽

Fatma Mostafa El-Badawy ◽

Walaa Mohamed Hamed

Keyword(s):

Computed Tomography ◽

Maxillary Sinus ◽

Cone Beam Computed Tomography ◽

Third Molar ◽

Cone Beam ◽

Egyptian Population ◽

Maxillary Molar ◽

Maxillary Sinus Floor ◽

Sinus Floor ◽

The Right

Abstract Background The proximity of the maxillary sinus floor to the maxillary molar roots increases the probability of oroantral communication on conducting any surgical or endodontic procedure in the involved area. The aim of this study is to evaluate the relationship between each maxillary molar root and maxillary sinus floor using cone beam computed tomography. Predicting the probability of protrusion of each root into the sinus will consequently predict the probability of occurrence of the oroantral fistula in a sample of the Egyptian population. Results The total number of roots located outside the sinus was 121 (35.3%), while those contacting the sinus floor were 80 (23.3%) and those intruded the sinus were 141 (41.2%). The percentage of root intrusion into the sinus in males (56.9%) was significantly (p = 0.01) higher than females (42.9%). The probability of root intrusion in the left molars (54.2%) was non-significantly (p = 0.067) higher than that of the right side (44.3%). As for the type of tooth, the second molar showed the highest probability of root intrusion into the sinus (55.3%) followed by the third molars (52.6%) then the first molars (40.9). According to the type of root, the mesiobuccal root showed the highest probability of intrusion into the sinus (50.9%) followed by the palatal root (49.1%) then the distobuccal root (47.4%). However, the difference in both type of tooth and type of root was statistically non-significant (p = 0.051 and 0.869 respectively). As for the individual root with the highest probability of intrusion, the mesio-buccal root of the right third molar is the most frequent root to intrude the sinus (71.4%) and the mesio-buccal root of the right first molar is the least frequent (22.7%). Conclusions In a sample of the Egyptian population, males exhibit higher probability of root protrusion into the sinus than females. The side and type of tooth are of higher impact on the probability of its intrusion into the sinus compared to the type of root. Left second molars are at a higher risk of oroantral communications on surgical or endodontic procedures compared to other molars due to its highest probability of intrusion into the sinus.

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Evaluation of high-resolution cone-beam computed tomography in the detection of simulated interradicular bone lesions

Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology ◽

10.1016/j.tripleo.2006.09.040 ◽

2007 ◽

Vol 103 (2) ◽

pp. e52 ◽

Cited By ~ 2

Author(s):

M. Noujeim ◽

P. Nummikoski ◽

R. Langlais

Keyword(s):

Computed Tomography ◽

High Resolution ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Bone Lesions

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Accuracy of High-resolution Small-volume Cone-beam Computed Tomography in Detecting Complex Anatomy of the Apical Isthmi: Ex Vivo Analysis

Journal of Endodontics ◽

10.1016/j.joen.2018.08.015 ◽

2018 ◽

Vol 44 (12) ◽

pp. 1862-1866 ◽

Cited By ~ 8

Author(s):

Elen de Souza Tolentino ◽

Pablo Andrés Amoroso-Silva ◽

Murilo Priori Alcalde ◽

Heitor Marques Honório ◽

Lilian Cristina Vessoni Iwaki ◽

...

Keyword(s):

Computed Tomography ◽

High Resolution ◽

Cone Beam Computed Tomography ◽

Small Volume ◽

Ex Vivo ◽

Cone Beam ◽

Complex Anatomy

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Analisis gambaran histogramdan densitas kamar pulpa pada gigi suspek pulpitis reversibel dan ireversibel dengan menggunakan radiografi cone beam computed tomography (Histogram and density analysis of irreversible and reversible pulpitissuspected tooth using cone beam computed tomography radiography)

Journal of Dentomaxillofacial Science ◽

10.15562/jdmfs.v13i2.401 ◽

2014 ◽

Vol 13 (2) ◽

pp. 122

Author(s):

Lusi Epsilawati ◽

Suhardjo Sitam ◽

Sam Belly ◽

Fahmi Oscandar

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Secondary Data ◽

Cone Beam ◽

Pulp Chamber ◽

Control Data ◽

Density Analysis ◽

The Right ◽

Irreversible Pulpitis ◽

Peak Value

Inflammation of the pulp is most common and difficult to diagnose. For it radiographs is necessary. One attempt to do is to assess its histogram and density. Radiography equipment that has the ability to analyze is cone beam computedtomography (CBCT). The purpose of this study is to analyze radiograph of the pulp chamber histogram: peak value,grayscale and trends, as well as the density on the condition reversible and irreversible pulpitis condition. The populationof this descriptive study is secondary data of CBCT-3D radiographs during 2012-2013. Selected sample of 75 data isreversible pulpitis, irreversible pulpitis 80 data, as well as 20 normal condition data as control. Data were analyzed byone way ANOVAand are presented in tables and graphs. The results showed that the value of the histogram under normalconditions showeda different significance for both the peak value of the reversible or irreversible pulpitis (p= 0.01). It isdifferent with a grayscale value, showed no significant different between normal with reversible pulpitis (p =0.997) and significantly different between normal and pulpitis reversible against pulpitis irrebversible (p= 0.03-0.01). There is a growing trend change is on the right direction of reversible and irreversible pulpitis. It was concluded that the irreversiblepulpitis, density and histogram shows the direction of more luscent compared with normal and reversible pulpitisconditions.

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Cone-beam computed tomography analysis on root and canal morphology of mandibular first permanent molar among multiracial population in East Coast Malaysian population

European Journal of Dentistry ◽

10.4103/ejd.ejd_82_18 ◽

2018 ◽

Vol 12 (03) ◽

pp. 410-416 ◽

Cited By ~ 1

Author(s):

Prunella Ubung Deng ◽

Mohamad Syahrizal Halim ◽

Sam'an Malik Masudi ◽

Saaid Al-Shehadat ◽

Basaruddin Ahmad

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

East Coast ◽

Cone Beam ◽

Root Canals ◽

Single Root ◽

Malaysian Population ◽

Permanent Molar ◽

Permanent Molars ◽

The Right

ABSTRACT Objective: The aim of this study is to investigate the variations in the number of root and canal in the mandibular first permanent molars (MFPMs) teeth in East Coast Malaysian population using cone-beam computed tomography (CBCT). Materials and Methods: CBCT images which show MFPMs recorded in HUSM Dental Clinic between January 2015 and June 2016 was obtained and analyzed for their number of roots and canals. A total of 208 CBCT images of MFPMs were collected; 118 patients had unilateral molars and 90 patients had bilateral molars. The following observations were made: (1) root number; (2) number of canals per root; and (3) comparisons of number of roots and canals according to gender, ethnicity, and position. Results: The majority of cases of bilateral MFPM had the same number of roots (95.6%, 95% confidence interval [CI]: 89.01%, 98.78%) on both the right and left side and only 4 cases (4.4%, 95% CI: 1.22%, 10.99%) had 3 roots on the right and 2 roots on the left sides. The majority of cases had the same number of canals on both sides (66.7%, 95% CI: 55.95, 76.26%) and 33.3% (95% CI: 23.74%, 44.05%) with unequal number of canals. The occurrence of the number of canals was not independent of the sides of the arch (P < 0.001) and there was statistically significantly greater proportion of cases who had greater number of canals on the right side than the left (P = 0.03). The prevalence of right single-rooted MFPM was very small at 0.3% (n = 1) in a Malay male (95% CI: 0.00, 1.83) and the most prevalent was two roots first molar (88.4%). The number of roots was not associated with sex or ethnic group (P > 0.05). The MFPM with a single root was found to have only one mesial canal. For two rooted MFPM, the most prevalent occurrence was two canals at the mesial and one canal at the distal roots (59%); followed by single canals in each mesial and distal (21%) and double canals per root (18%). Three roots MFPM have either single or double canals in the mesial root and double canals in the distal root. Conclusions: The majority of population in the East Coast region of Malaysia has two roots and three root canals in their MFPMs. There was no difference in the number of roots between gender and ethnic and canals between ethnic.

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