Evaluation of surface and volume rendering in 3D-CT of facial fractures

Rodt, Thomas; Bartling, Sönke; Zajaczek, J. E. W.; Vafa, M A; Kapapa, Thomas; Majdani, Omid; Krauß, J.; Zumkeller, M.; Matthies, H; Becker, H.; Kaminsky, Jan

doi:10.1259/dmfr/22989395

Cited by 46 publications

(22 citation statements)

References 17 publications

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“…4,[12][13][14] In all children, we found that 2D+3D CT increased the sensitivity (81.3%, p < 0.05) when compared with 2D CT only (74.5%) in the diagnosis of linear skull fractures. In addition, fewer false-negative calls (or undercalls) with 2D+3D (n = 45) when compared with 2D alone (n = 65) showed statistical significance (p < 0.05).…”

Section: Discussionmentioning

confidence: 74%

Pediatric skull fracture diagnosis: should 3D CT reconstructions be added as routine imaging?

Orman¹,

Wagner²,

Seeburg³

et al. 2015

PED

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OBJECT The authors compared the efficacy of combining 2D+3D CT reconstructions with standard 2D CT images in the diagnosis of linear skull fractures in children with head trauma. METHODS This was a retrospective evaluation of consecutive head CT studies of children presenting with head trauma. Two experienced pediatric neuroradiologists in consensus created the standard of reference. Three readers independently evaluated the 2D CT images alone and then in combination with the 3D reconstructions for the diagnosis of linear skull fractures. Sensitivity and specificity in the diagnosis of linear skull fractures utilizing 2D and 2D+3D CT in combination were measured for children less than 2 years of age and for all children for analysis by the 3 readers. RESULTS Included in the study were 250 consecutive CT studies of 250 patients (167 boys and 83 girls). The mean age of the children was 7.82 years (range 4 days to 17.4 years). 2D+3D CT combined had a higher sensitivity and specificity (83.9% and 97.1%, respectively) compared with 2D alone (78.2% and 92.8%, respectively) with statistical significance for specificity (p < 0.05) in children less than 2 years of age. 2D+3D CT combined had a higher sensitivity and specificity (81.3% and 90.5%, respectively) compared with 2D alone (74.5% and 89.1%, respectively) with statistical significance for sensitivity (p < 0.05) in all children. CONCLUSIONS In this study, 2D+3D CT in combination showed increased sensitivity in the diagnosis of linear skull fractures in all children and increased specificity in children less than 2 years of age. In children less than 2 years of age, added confidence in the interpretation of fractures by distinguishing them from sutures may have a significant implication in the setting of nonaccidental trauma. Furthermore, 3D CT is available at no added cost, scan time, or radiation exposure, providing trainees and clinicians with limited experience an additional valuable tool for routine imaging of pediatric head trauma.

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Section: Discussionmentioning

confidence: 74%

Pediatric skull fracture diagnosis: should 3D CT reconstructions be added as routine imaging?

Orman¹,

Wagner²,

Seeburg³

et al. 2015

PED

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“…Several studies evaluated SSD and VR with regard to fracture detection [19][20][21], revealing only minor differences in fracture detection between these two algorithms [20]. As opposed to SSD, VR also offers the ability to show subcortical abnormalities [20,22] and does not require additional postprocessing time to remove possible beam-hardening artefacts at the level of the skull base [23].…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional fracture visualisation of multidetector CT of the skull base in trauma patients: comparison of three reconstruction algorithms

et al. 2009

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The purpose of this study was to retrospectively assess the detection rate of skull-base fractures for three different three-dimensional (3D) reconstruction methods of cranial CT examinations in trauma patients. A total of 130 cranial CT examinations of patients with previous head trauma were subjected to 3D reconstruction of the skull base, using solid (SVR) and transparent (TVR) volume-rendering technique and maximum intensity projection (MIP). Three radiologists independently evaluated all reconstructions as well as standard high-resolution multiplanar reformations (HR-MPRs). Mean fracture detection rates for all readers reading rotating reconstructions were 39, 36, 61 and 64% for SVR, TVR, MIP and HR-MPR respectively. Although not significantly different from HR-MPR with respect to sensitivity (P = 0.9), MIP visualised 18% of fractures that were not reported in HR-MPR. Because of the relatively low detection rate using HR-MPRs alone, we recommend reading MIP reconstructions in addition to the obligatory HR-MPRs to improve fracture detection.

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“…However, these programs use different reconstruction algorithms and/or methods of measurement ultimately intended to aid professionals in formulating more accurate maxillofacial diagnosis and treatment plans. The reconstruction pattern may be determined by surface rendering or volumetric rendering as previously investigated, 10,24 although the evaluation of patterns of linear measurement remains unclear.…”

Section: -17mentioning

confidence: 99%

Comparison of precision and accuracy of linear measurements performed by two different imaging software programs and obtained from 3D-CBCT images for Le Fort I osteotomy

Gaia

Pinheiro²,

Umetsubo³

et al. 2013

Dentomaxillofacial Radiology

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Objective: The purpose of this study was to compare the precision and accuracy of linear measurements for Le Fort I osteotomy performed by two different imaging software programs and obtained from three-dimensional cone beam CT (3D-CBCT) images. Methods: The study population consisted of 11 dried skulls submitted to CBCT, which generated 3D images. Linear measurements were based on craniometric anatomical landmarks pre-defined by the authors as specifically used for Le Fort I osteotomy and were identified by two radiologists twice each, independently, using Vitrea 3.8.1 (Vital Images Inc., Plymouth, MN) and open-source digital imaging communication in medicine viewer OsiriX 1.2 64-bit (Pixmeo, Geneva, Switzerland). Subsequently, a third examiner made physical measurements using a digital caliper (167 series; Mitutoyo Sul Americana Ltd, Suzano, SP, Brazil). Results: The results demonstrated a statistically significant difference between OsiriX and the gold standard, especially in the pterygoid process (TPtg L 5 0.019, LLpPtg R 5 0.016 and LLpPtg L 5 0.012). Vitrea showed no statistical difference in comparison with the gold standard, and showed a high level of accuracy in all the measurements performed. The major difference found was 0.42 mm (LLpPtg R). Interexaminer analysis ranged from 0.90 to 0.97 using Vitrea and from 0.8 to 0.97 using OsiriX. Intraexaminer correlation coefficient ranged from 0.90 to 0.98 and from 0.84 to 0.98 for Examiners 1 and 2, respectively, using Vitrea and from 0.93 to 0.99 for Examiner 1 and from 0.64 to 0.96 for Examiner 2 using OsiriX. Conclusion: Vitrea may be considered as precise and accurate, insofar as it was able to perform all the 3D linear measurements. On the other hand, linear measurements performed using OsiriX were not successful in producing accurate linear measurements for Le Fort I osteotomy.

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Evaluation of surface and volume rendering in 3D-CT of facial fractures

Abstract: SR provided sufficient and time efficient means for 3D-visualization of facial fractures in this study. No diagnostic benefit of VR over SR was found.

Cited by 46 publications

References 17 publications

Pediatric skull fracture diagnosis: should 3D CT reconstructions be added as routine imaging?

Pediatric skull fracture diagnosis: should 3D CT reconstructions be added as routine imaging?

Three-dimensional fracture visualisation of multidetector CT of the skull base in trauma patients: comparison of three reconstruction algorithms

Comparison of precision and accuracy of linear measurements performed by two different imaging software programs and obtained from 3D-CBCT images for Le Fort I osteotomy

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