Cone beam CT imaging of airgun injuries to the craniomaxillofacial region

Stuehmer, Constantin; Essig, Harald; Bormann, Kai-Hendrik; Majdani, Omid; Gellrich, Nils‐Claudius; Rücker, Martin

doi:10.1016/j.ijom.2008.07.007

Cited by 43 publications

(31 citation statements)

References 15 publications

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“…The presence of artefacts in the final reconstructed images can be considered as one of the main pitfalls of CBCT imaging. 3,4 However, only a few reports have focused on this issue, [4][5][6][7] and none focused specifically on motion artefacts. Considering that a CBCT examination does not keep track of the relation between the position of the patient and the time of image acquisition, any movement during the exposure might lead to imperfections in the final reconstructed image.…”

Section: Discussionmentioning

confidence: 99%

“…metal) and motion artefacts. 3,4 Only a few reports exist regarding artefacts in CBCT images, [4][5][6][7] and none of them has focused specifically on motion artefacts. A CBCT examination takes some seconds; consequently, the patient may move during the exposure, and the image reconstruction will not account for the motion since no information on movement is integrated into the reconstruction process.…”

Section: Introductionmentioning

confidence: 99%

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Cone beam CT image artefacts related to head motion simulated by a robot skull: visual characteristics and impact on image quality

Spin‐Neto

Mudrák²,

Matzen³

et al. 2013

Dentomaxillofacial Radiology

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Objectives: The aim of this study was to assess artefacts and their impact on cone beam CT (CBCT) image quality (IQ) after head motion simulated by a robot skull. Methods: A fully dentate human skull incorporated into a robot simulated pre-determined patient movements. Ten head motion patterns were selected based on the movement of the C-arm of the CBCT units (no motion as reference). Three CBCT units were used [a threedimensional eXam (K) (KaVo Dental GmbH, Biberach, Germany), a Promax 3D MAX (P) (Planmeca Oy, Helsinki, Finland) and a Scanora ® 3D (S) (Soredex Oy, Tuusula, Finland)]. Axial images were qualitatively assessed at three levels: mental foramen (MF), infraorbital foramen and supraorbital foramen, and artefacts characterized as stripe-like, double contours, unsharpness or ring-like. A 100 mm visual analogue scale (VAS) was used to quantitatively assess IQ. Cross-sectional images of the lower third molar and MF bilaterally were also evaluated by VAS. Four blinded examiners assessed the images. Results: For all units and motion patterns, stripe-like artefacts were the most common. The four observers agreed on the presence of at least one artefact type in 90% of the images. Axial images showed lower overall IQ after motion (VAS 5 72.4 ± 24.0 mm) than reference images (VAS 5 97.3 ± 2.6 mm). The most severe artefacts were seen at the MF level. For cross-sectional images, IQ was lowest after tremor. The mean IQ range was 74-89 and 57-90 for isolated (tilting, rotation and nodding) and combined (nodding 1 tilting and rotation 1 tilting) movements, respectively. IQ for MF was lower than for third molar for any movement except tremor. Conclusions: Head motion of any type resulted in artefacts in CBCT images. The impact on IQ depended on the region and level in the skull.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cone beam CT image artefacts related to head motion simulated by a robot skull: visual characteristics and impact on image quality

Spin‐Neto

Mudrák²,

Matzen³

et al. 2013

Dentomaxillofacial Radiology

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“…KIBT görüntülerinde sinüs patolojileri homojen bir yoğunluğa sahiptir ve yoğunluğun ayrımında KIBT genellikle güvenilir bir yöntem değildir. Ancak sinüs lezyonun büyüklüğü ve sınırları, sinüs duvarının durumu ve ostiumun değerlendirilmesinde güvenilirdir 38 . Ayrıca sinüse yer değiştiren diş köklerinin yerinin tespitinde BT veya KIBT' den yararlanılabilir Paranazal sinüslerin mukozal iç yüzeyinin inflamatuar değişikleridir.…”

Section: Konik Işınlı Bilgisayarlı Tomografi (Kibt)unclassified

“…Genellikle asemptomatik olan bu enflamatuar değişime mukozit denir. Periodontal hastalıklar, dental enflamatuar lezyonlar ilgili maksiller sinüs tabanında lokalize mukozite sebep olabilir [29][30][31][32][33][34][35][36][37][38][39] . Bu durum enflamatuar eksüdanın antrumun kortikal tabanından periosta ve sinüsü örten mukozaya difüzyonu ile gerçekleşir.…”

Section: Konik Işınlı Bilgisayarlı Tomografi (Kibt)unclassified

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Radiological Evaluation of Maxillary Sinus Pathologies and Osteomeatal Complex

Temur

2018

Arşiv Kaynak Tarama Dergisi

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Maxillary sinus is an important anatomical formation that must be taken into account in dental practice, which is adjacent to the oral cavity. The osteomeatal complex is located in the middle meatus and is the site of the sinus ostia. It is suggested that strictures in this area cause inflammatory changes in the sinuses. The absence of inflammatory changes in osteomeatal complex and maxillary sinuses is a vital factor in the success of operations such as sinus lifting operations. In this review, it was aimed to summarize the radiological methods, findings of maxillary sinus pathologies and osteomeatal complex . Key words: Osteometal complex, maxillary sinuses, radiological examination, diagnosis ÖZET Maksiller sinüs oral kaviteye komşuluğu olan diş hekimliği uygulamalarında dikkate alınması gereken önemli bir anatomik oluşumdur. Osteomeatal kompleks ise orta meatusda yer alan ve sinüs ostiumlarının açıldığı yerdir. Bu alandaki darlıkların sinüslerde enflamatuar değişiklere sebep olduğu ileri sürülür. Osteomeatal komplekste ve maksiller sinüslerde enflamatuar değişikliklerin bulunmaması, sinüs lifting operasyonu gibi operasyonların başarısı için hayati bir faktördür. Bu derlemede maksiller sinüs patolojileri ve osteomeatal kompleksi görüntülemek için uygun radyolojik yöntemlerin, bulguların özetlenmesi amaçlandı.

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