The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Ken Yamaura - One of the best experts on this subject based on the ideXlab platform.
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Risk Vessels of Retropharyngeal Hematoma During Stellate Ganglion Block.
Regional anesthesia and pain medicine, 2017Co-Authors: Kazunori Hirota, Kazuhiko Hirata, Shiho Shibata, Kenji Shigematsu, Kazuo Higa, Ken YamauraAbstract:Background and Objective Bleeding into the retropharyngeal space is a potential complication in stellate ganglion block (SGB). Retropharyngeal hematoma formation is considered to be due to damage of small arteries in the region, although only scanty details of the region are available. The aim of this study was to map the risk blood vessels in the retropharyngeal space to avoid accidental damage during SGB. Methods Contrast-enhanced 3-dimensional computed tomography images performed on 80 patients were reanalyzed retrospectively to construct detailed map of Cervical blood vessels that are prone to damage and bleeding during SGB. Results Of the 160 bilateral necks, 6 (3.8%) and 82 (51.3%) small arteries were identified in the medial portions of the ventral surface of the transverse processes of the sixth and seventh Cervical Vertebrae, respectively. In particular, 5 of the 6 small arteries detected in the medial portion of the ventral surface of the transverse process of the sixth Cervical Vertebra were the inferior thyroid artery (ITA). Of the 160 Vertebral arteries, 2 arteries were missing, 4 (2.5%) entered the transverse foramen of the fifth Cervical Vertebra, whereas 1 artery (0.6%) entered the transverse foramen of the Fourth Cervical Vertebra. Conclusions Three-dimensional computed tomography identified the ITA in the medial portion of the ventral surface of the transverse process of the sixth Cervical Vertebra. The risk vessels of retropharyngeal hematoma during SGB could include the ITA.
Kazunori Hirota - One of the best experts on this subject based on the ideXlab platform.
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Risk Vessels of Retropharyngeal Hematoma During Stellate Ganglion Block.
Regional anesthesia and pain medicine, 2017Co-Authors: Kazunori Hirota, Kazuhiko Hirata, Shiho Shibata, Kenji Shigematsu, Kazuo Higa, Ken YamauraAbstract:Background and Objective Bleeding into the retropharyngeal space is a potential complication in stellate ganglion block (SGB). Retropharyngeal hematoma formation is considered to be due to damage of small arteries in the region, although only scanty details of the region are available. The aim of this study was to map the risk blood vessels in the retropharyngeal space to avoid accidental damage during SGB. Methods Contrast-enhanced 3-dimensional computed tomography images performed on 80 patients were reanalyzed retrospectively to construct detailed map of Cervical blood vessels that are prone to damage and bleeding during SGB. Results Of the 160 bilateral necks, 6 (3.8%) and 82 (51.3%) small arteries were identified in the medial portions of the ventral surface of the transverse processes of the sixth and seventh Cervical Vertebrae, respectively. In particular, 5 of the 6 small arteries detected in the medial portion of the ventral surface of the transverse process of the sixth Cervical Vertebra were the inferior thyroid artery (ITA). Of the 160 Vertebral arteries, 2 arteries were missing, 4 (2.5%) entered the transverse foramen of the fifth Cervical Vertebra, whereas 1 artery (0.6%) entered the transverse foramen of the Fourth Cervical Vertebra. Conclusions Three-dimensional computed tomography identified the ITA in the medial portion of the ventral surface of the transverse process of the sixth Cervical Vertebra. The risk vessels of retropharyngeal hematoma during SGB could include the ITA.
Kellner, Alexander Wilhelm Armin - One of the best experts on this subject based on the ideXlab platform.
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FIGURE 6 in The anatomy and phylogenetic position of the Triassic dinosaur Staurikosaurus pricei Colbert, 1970
2009Co-Authors: Bittencourt, Jonathas De Souza, Kellner, Alexander Wilhelm ArminAbstract:FIGURE 6. Photographs and drawings of the presumed Fourth Cervical Vertebra in ventral (a–b) and dorsal (c–d) views. Abbreviations: ep, epipophysis; ns, neural spine; pa, parapophysis; poz, postzygapophysis; prz, prezygapophysis; tp, transverse process; vk, median ventral keel. Scale bar = 3 cm
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FIGURE 5 in The anatomy and phylogenetic position of the Triassic dinosaur Staurikosaurus pricei Colbert, 1970
2009Co-Authors: Bittencourt, Jonathas De Souza, Kellner, Alexander Wilhelm ArminAbstract:FIGURE 5. Photographs and drawings of the Fourth Cervical Vertebra in left (a–b) and right (c–d) lateral views. Abbreviations: caf, caudal fossa; crf, cranial fossa; ipoe, infrapostzygapophyseal excavation; ns, neural spine; pa, parapophysis; podl, postzygodiapophyseal lamina; poz, postzygapophysis; prdl, prezygodiapophyseal lamina; prz, prezygapophysis; przf, prezygapophysis articular facet; tp, transverse process; vk, median ventral keel. Scale bar = 3 cm
M. Perez‐bacete - One of the best experts on this subject based on the ideXlab platform.
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Trabecular trajectory in the articular processes of the human Fourth Cervical Vertebra.
Journal of Anatomy, 2001Co-Authors: M. Herrera, A. Panchón, M. Perez‐baceteAbstract:The articular processes (AP) of the neural arch have been implicated in weight transmission through the Cervical spine. To analyse the mechanism of weight transmission in the AP, we studied the direction of forces within it, in particular, the pattern of trabecular trajectories. Twenty-two AP from C4 Vertebrae were studied in anatomical sections, and corresponding photoelastic models from selected sections were constructed and analysed. Anatomical and photoelastic findings show the subarticular spongiosa of the superior articular process (SAP) to be orthogonally arranged with vertical and oblique trabeculae in the direction of compressive forces and additional trabeculae always oriented perpendicular to the former. Vertical and oblique trabeculae are divided into rostral, middle and posterior groups. Rostral and middle trabeculae end in the anterior wall of the SAP and the transitional zone with the pedicle. Posterior trabeculae end in the subarticular spongiosa of the inferior articular process (IAP). The findings relating to trabecular trajectories in the SAP differ from previous descriptions and instead suggest that a part of the weight forces distributed within the AP transmit to the subchondral zone of the IAP. Knowledge of the trajectorial architecture of the AP may contribute to refining finite element analytical models for investigating its weight-bearing function.
Cüneyt Göçmez - One of the best experts on this subject based on the ideXlab platform.
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Penetrating Cervical spinal cord injury: CT and MRI findings
European Journal of Radiology Extra, 2011Co-Authors: Hatice Gümüş, Guven Tekbas, Hakan Önder, Faysal Ekici, Cüneyt GöçmezAbstract:Abstract Background Stab wounds resulting spinal cord injury (SCI) are relatively rare and typically associated with immediate neurological damage. Objectives We report MDCT and MRI findings of spinal injury findings following an unusual penetrating stab wound of the neck. Case report A 31-year-old man had a stab wound in the Cervical region. CT showed linear fracture in the corpus and left lamina of Fourth Cervical Vertebra. MRI revealed left side oriented posteroanterior penetrating linear spinal cord lesion and broad T2W hyperintensity changes representing spinal cord contusion. Conclusion CT and MRI allow bony injuries, foreign bodies, spinal instability and the classification of different types of lesions, ranging from spinal cord edema to complete spinal cord transection. MR imaging should be performed after acquiring negative CT imaging findings in the case of high suspicion of spinal cord trauma as seen in our present case.
