Three-Dimensional Computed Tomography (3D-CT) was Useful for the Diagnosis of Auditory Ossicular Anomaly and Traumatic Ossicular Dislocation: Three Case Reports

2012 ◽  
Vol 105 (4) ◽  
pp. 315-322 ◽  
Author(s):  
Akiko Nishida ◽  
Rie Kanai ◽  
Yoshihiro Tamura ◽  
Takuya Tsuji ◽  
Fumiko Kuboshima ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Case Reports ◽  
Three Dimensional ◽  
3D Ct

scholarly journals Lobectomy for lung cancer with a displaced left B1 + 2 and an anomalous pulmonary vein: a case report

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Shinichi Sakamoto ◽  
Hiromitsu Takizawa ◽  
Naoya Kawakita ◽  
Akira Tangoku
Keyword(s):  
Computed Tomography ◽  
Lung Cancer ◽  
Pulmonary Vein ◽  
Three Dimensional ◽  
Lower Lobe ◽  
Rare Condition ◽  
3D Ct ◽  
Anatomical Structures ◽  
Case Presentation ◽  
Anomalous Pulmonary Vein

Abstract Background A displaced left B1 + 2 accompanied by an anomalous pulmonary vein is a rare condition involving complex structures. There is a risk of unexpected injuries to bronchi and blood vessels when patients with such anomalies undergo surgery for lung cancer. Case presentation A 59-year-old male with suspected lung cancer in the left lower lobe was scheduled to undergo surgery. Chest computed tomography revealed a displaced B1 + 2 and hyperlobulation between S1 + 2 and S3, while the interlobar fissure between S1 + 2 and S6 was completely fused. Three-dimensional computed tomography (3D-CT) revealed an anomalous V1 + 2 joining the left inferior pulmonary vein and a branch of the V1 + 2 running between S1 + 2 and S6. We performed left lower lobectomy via video-assisted thoracic surgery, while taking care with the abovementioned anatomical structures. The strategy employed in this operation was to preserve V1 + 2 and confirm the locations of B1 + 2 and B6 when dividing the fissure. Conclusion The aim of the surgical procedure performed in this case was to divide the fissure between S1 + 2 and the inferior lobe to reduce the risk of an unexpected bronchial injury. 3D-CT helps surgeons to understand the stereoscopic positional relationships among anatomical structures.

scholarly journals Prognosis of pulmonary fibrosis presenting with a usual interstitial pneumonia pattern on computed tomography in patients with myeloperoxidase anti-neutrophil cytoplasmic antibody-related nephritis: a retrospective single-center study

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Toshikazu Watanabe ◽  
Tomoyuki Minezawa ◽  
Midori Hasegawa ◽  
Yasuhiro Goto ◽  
Takuya Okamura ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pulmonary Fibrosis ◽  
Interstitial Pneumonia ◽  
Lung Volume ◽  
Lung Fibrosis ◽  
Usual Interstitial Pneumonia ◽  
Three Dimensional ◽  
3D Ct ◽  
Antifibrotic Therapy ◽  
Significant Difference

Abstract Background Myeloperoxidase anti-neutrophil cytoplasmic antibody-related nephritis (MPO-ANCA nephritis) is occasionally accompanied by lung abnormalities such as pulmonary fibrosis. However, the clinical features of pulmonary fibrosis in patients with MPO-ANCA nephritis have not been well documented. This study was performed to compare the prognosis of a usual interstitial pneumonia (UIP) pattern of lung fibrosis in patients with MPO-ANCA nephritis with the prognosis of idiopathic pulmonary fibrosis (IPF). Methods We retrospectively reviewed the medical records of 126 patients with MPO-ANCA nephritis and identified 31 with a UIP pattern of lung fibrosis on high-resolution or thin-slice computed tomography (CT). We compared the characteristics and prognosis of these patients with those of 32 patients with IPF. In 18 patients from both groups, we assessed and compared the decline in lung volume over time using three-dimensional (3D) CT images reconstructed from thin-section CT data. Results The numbers of male and female patients were nearly equal among patients with MPO-ANCA nephritis exhibiting a UIP pattern; in contrast, significant male dominancy was observed among patients with IPF (p = 0.0021). Significantly fewer smokers were present among the patients with MPO-ANCA nephritis with a UIP pattern than among those with IPF (p = 0.0062). There was no significant difference in the median survival time between patients with MPO-ANCA nephritis with a UIP pattern (50.8 months) and IPF (55.8 months; p = 0.65). All patients with IPF in this cohort received antifibrotic therapy (pirfenidone or nintedanib). Almost half of the deaths that occurred in patients with MPO-ANCA nephritis with a UIP pattern were caused by non-respiratory-related events, whereas most deaths in patients with IPF were caused by respiratory failure such as acute exacerbation. In the 3D CT lung volume analyses, the rate of decline in lung volume was equivalent in both groups. Conclusions MPO-ANCA nephritis with a UIP pattern on CT may have an unfavorable prognosis equivalent to that of IPF with a UIP pattern treated with antifibrotic agents.

Fluoroscopy-guided sacroplasty: special focus on preoperative planning from three-dimensional computed tomography

2008 ◽  
Vol 49 (9) ◽  
pp. 1042-1048 ◽  
Author(s):  
Ø. Gjertsen ◽  
T. Schellhorn ◽  
P. H. Nakstad
Keyword(s):  
Computed Tomography ◽  
Pain Relief ◽  
Correct Diagnosis ◽  
Three Dimensional ◽  
The Elderly ◽  
Special Focus ◽  
3D Ct ◽  
Insufficiency Fractures ◽  
Multiplanar Reconstructions ◽  
Sacral Insufficiency Fractures

Background: Osteoporotic sacral insufficiency fractures are usually spontaneous or caused by discrete traumas. The fluoroscopic anatomy of the sacrum can be difficult to understand, and this is why sacroplasty is considered more challenging than ordinary vertebroplasties. Purpose: To demonstrate the planning of the procedure and the effectiveness of treatment with sacroplasty by means of three-dimensional computed tomography (3D CT) by combining multiplanar reconstructions (MPR) and volume-rendering technique (VRT). Material and Methods: Five elderly, osteoporotic patients with intense pelvic and hip pain underwent weeks of inconclusive clinical and radiological diagnostic efforts. Correct diagnosis was finally attained with magnetic resonance imaging (MRI) and CT. Plain radiographs rarely show fractures, and MR or CT examinations are necessary to demonstrate longitudinal fractures. The procedures were performed with digital biplane equipment using preoperative 3D CT planning procedures. Polymethyl methacrylate (PMMA) was injected to fill the fracture sites. Results: The fractures were successfully treated with sacroplasty using PMMA. A new technique, which involves placing the needles along the long axis of the sacrum, was optimized to the individual patients’ fractures and sacral anatomy by meticulous planning on a workstation with 3D CT data sets. It was technically successful in all five cases. Four of the five patients had sustained pain relief. Conclusion: Sacral insufficiency fractures are not uncommon and should be considered in the elderly population with low back pain. Sacroplasty using the optimized “long-axis technique” gave almost immediate pain relief for all five patients in our study material. No complications were observed.

scholarly journals Interpretation of mandibular condyle fractures using 2D- and 3D-computed tomography

2003 ◽  
Vol 14 (3) ◽  
pp. 203-208 ◽  
Author(s):  
Adriana Paula de Andrade da Costa e Silva ◽  
José Leopoldo Ferreira Antunes ◽  
Marcelo Gusmão Paraiso Cavalcanti
Keyword(s):  
Computed Tomography ◽  
Visual Information ◽  
Three Dimensional ◽  
Mandibular Condyle ◽  
Supplementary Information ◽  
3D Ct ◽  
Bone Fragments ◽  
Craniofacial Trauma ◽  
Effective Diagnosis ◽  
2D And 3D

Computed tomography (CT) has been increasingly used in the examination of patients with craniofacial trauma. This technique is useful in the examination of the temporomandibular joint and allows the diagnosis of fractures of the mandibular condyle. Aiming to verify whether the three-dimensional reconstructed images from CT (3D-CT) produce more effective visual information than the two-dimensional (2D-CT) ones, we evaluated 2D-CT and 3D-CT examinations of 18 patients with mandibular condyle fractures. We observed that 2D-CT and 3D-CT reconstructed images produced similar information for the diagnosis of fractures of the mandibular condyle, although the 3D-CT allowed a better visualization of the position and displacement of bone fragments, as well as the comminution of fractures. These results, together with the possibility of refining and manipulating perspectives in 3D images, reinforce the importance of its use in the surgical planning and evaluation of treatment. We concluded that 3D-CT presented supplementary information for a more effective diagnosis of mandibular condyle fractures.

scholarly journals Prenatal diagnosis of fetal skeletal dysplasia using 3-dimensional computed tomography: a prospective study

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Miyoko Waratani ◽  
Fumitake Ito ◽  
Yukiko Tanaka ◽  
Aki Mabuchi ◽  
Taisuke Mori ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Prenatal Diagnosis ◽  
Skeletal Dysplasia ◽  
Medical Information ◽  
Three Dimensional ◽  
Trial Registration ◽  
University Hospital ◽  
3D Ct ◽  
Registration Number ◽  
A Prospective Study

Abstract Background Fetal skeletal dysplasia (FSD) comprises a complex group of systemic bone and cartilage disorders. Many FSD phenotypes have indistinct definitions, making definitive prenatal diagnosis difficult. The condition is typically diagnosed using sonography; however, three-dimensional computed tomography (3D-CT) also aids in making a prenatal diagnosis. This study aimed to examine the efficacy of 3D-CT in the prenatal diagnosis of FSD by comparing the diagnostic accuracy of fetal sonography and 3D-CT. Methods On suspicion of FSD based on ultrasound examination, we performed 3D-CT prenatally to obtain detailed skeletal information on FSD. To minimize exposure of the fetuses to radiation without compromising image quality, we used predetermined 3D-CT settings for volume acquisition. Results Nineteen fetuses were suspected of having skeletal dysplasia based on ultrasonography findings. Of these, 17 were diagnosed with FSD using 3D-CT. All 17 fetuses diagnosed with FSD prenatally were confirmed postnatally to have the condition. The postnatal diagnosis (campomelic dysplasia) differed from the prenatal diagnosis (osteogenesis imperfecta) in only one infant. Sixteen cases (94.1%) were diagnosed both prenatally and postnatally with FSD. Five infants had lethal skeletal dysplasia; one died in utero, and four died as neonates. We determined the appropriate delivery method for each infant based on the prenatal diagnosis. Conclusions 3D-CT is a valuable tool for augmenting ultrasound examinations in the diagnosis of FSD. While improving the diagnostic tool of sonography is essential in cases of suspected FSD, 3D-CT imaging is indispensable for diagnosis and classification, enabling better planning for resuscitation of the infant after birth. Trial registration University Hospital Medical Information Network (UMIN) Center trial registration number is UMIN000034744. Registered 1 October, 2018 – Retrospectively registered.

Planning Mandibular Distraction: Preliminary Report

1995 ◽  
Vol 32 (1) ◽  
pp. 71-76 ◽  
Author(s):  
H. Wolfgang Losken ◽  
Gary T. Patterson ◽  
Spiros A. Lazarou ◽  
Timothy Whitney
Keyword(s):  
Computed Tomography ◽  
Preliminary Report ◽  
Three Dimensional ◽  
Ct Scans ◽  
Obtuse Angle ◽  
3D Ct ◽  
Mandibular Angle ◽  
Mandibular Distraction ◽  
Different Ages ◽  
Horizontal Ramus

Normal lengths of the vertical ramus, body, and angle of the mandible at different ages are presented. Before mandibular distraction is embarked on, the extent of the deficiency of the mandible is assessed. The length of the vertical ramus and body are measured on cephalometric radiographs or three-dimensional computed tomography (3D CT) scans. Deficiency of the length of the mandible is calculated. The position of the pin placement angle (from the horizontal ramus) is calculated by means of the following formula: 180 degrees minus mandibular angle times vertical ramus deficiency divided by total deficiency. Placing the pins correctly will result in correction of the vertical ramus and body deficiency of the mandible and the excessively obtuse angle of the mandible will become more acute.

The usefulness of three-dimensional computed tomography (3D-CT) for the treatment of isolated gastric varices

2003 ◽  
Vol 124 (4) ◽  
pp. A24
Author(s):  
Masaharu Takeuchi ◽  
Koshi Oh ◽  
Takahiro Ueki ◽  
Kazuhide Hirakawa ◽  
Jiro Fujimoto
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Gastric Varices ◽  
3D Ct ◽  
Isolated Gastric Varices

scholarly journals Unusual pulmonary vein variant in a patient with right upper lobe lung cancer

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
Rika Tobita ◽  
Ryota Nakamura ◽  
Yoshihisa Inage
Keyword(s):  
Computed Tomography ◽  
Lung Cancer ◽  
Pulmonary Artery ◽  
Pulmonary Vein ◽  
Thoracoscopic Surgery ◽  
Lung Resection ◽  
Three Dimensional ◽  
3D Ct ◽  
Anomalous Pulmonary Vein ◽  
The Relationship

Abstract It is essential to understand individual pulmonary anatomy, and the relationship between the tumor and surrounding organ, when lung resection is conducted. Recently, many anomalous pulmonary venous variations have been detected using three-dimensional computed tomography (3D-CT). Herein, we report the case of a 62-year-old women with lung cancer and an anomalous right upper lobe pulmonary vein that drained into the left atrium between the pulmonary artery and bronchus. Preoperative 3D-CT clearly demonstrated the anomalous pulmonary vein, and we safely performed lung resection by thoracoscopic surgery. Therefore, 3D-CT images can help ensure the safety of patients with aberrant vasculature during lung resection.

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