Postprocessing in Maxillofacial Multidetector Computed Tomography

2015 ◽  
Vol 66 (3) ◽  
pp. 212-222 ◽  
Author(s):  
Silvio Mazziotti ◽  
Alfredo Blandino ◽  
Michele Gaeta ◽  
Antonio Bottari ◽  
Carmelo Sofia ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Multidetector Ct ◽  
Surface Display ◽  
Maximum Intensity Projection ◽  
Longitudinal Axis ◽  
Theoretical Assumption ◽  
3 Dimensional ◽  
Volumetric Rendering ◽  
Rendering Techniques

Multidetector computed tomography (CT) and volumetric rendering techniques have always been a useful support for the anatomical and pathological study of the maxillofacial district. Nowadays accessibility to multidetector CT scanners allows the achievement of images with an extremely thin collimation and with high spatial resolution, not only along the axial plane but also along the patient's longitudinal axis. This feature is the main theoretical assumption for multiplanar imaging and for an optimal 3-dimensional postprocessing. Multiplanar reconstruction (MPR) techniques permit images along any plane in the space to be obtained, including curved planes; this feature allows the representation in a single bidimensional image of different anatomical structures that develop on multiple planes. For this reason MPR techniques represent an unavoidable step for the study of traumatic pathology as well as of malformative, neoplastic, and inflammatory pathologies. Among 3-dimensional techniques, Maximum Intensity Projection and Shaded Surface Display are routinely used in clinical practice. In addition, volumetric rendering techniques allow a better efficacy in representing the different tissues of maxillofacial district. Each of these techniques give the radiologist an undoubted support for the diagnosis and the characterization of traumatic and malformative conditions, have a critical utility in the neoplastic evaluation of primary or secondary bone involvement, and are also used in the planning of the most modern radiosurgical treatments. The aim of this article is to define the main technical aspects of imaging postprocessing in maxillofacial CT and to summarize when each technique is indicated, according to the different pathologies of this complex anatomical district.

scholarly journals Multiphasic Multidetector Computed Tomography Study of a Rare Tracheal Tumor: Granular Cell Tumor

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Tommaso Guarnieri ◽  
Luciano Cardinale ◽  
Gianluca Macchia ◽  
Giancarlo Cortese ◽  
Andrea Veltri
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Contrast Enhancement ◽  
Granular Cell Tumor ◽  
Multidetector Ct ◽  
Polypoid Lesion ◽  
Granular Cell ◽  
Cell Tumor ◽  
Arterial Phase ◽  
Granular Cell Tumour

Our aim is to present the case report of a woman affected by tracheal granular cell tumor analysed by multiphasic contrast-enhanced multidetector CT. The tumor presents as polypoid lesion (diameter 13 mm), with smooth and well-defined margins, elevated contrast enhancement in arterial phase, and a modest release of contrast in venous phase. This pattern is quite different from the other tracheal tumours. We have performed a comprehensive review of literature to assess all cases of granular cell tumors of the trachea; only 40 cases are reported. Of these, no one focused on the contrast enhancement aspect, so our work is the first showing a specific pattern in multidetector computed tomography (MDCT) of the tracheal granular cell tumour and may help in differential diagnosis.

scholarly journals Identification of the intersegmental plane during thoracoscopic segmentectomy: state of the art

2019 ◽  
Vol 30 (3) ◽  
pp. 329-336 ◽  
Author(s):  
Marco Andolfi ◽  
Rossella Potenza ◽  
Agathe Seguin-Givelet ◽  
Dominique Gossot
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
High Rate ◽  
Systemic Injection ◽  
3 Dimensional ◽  
Published Evidence ◽  
Pros And Cons ◽  
Intersegmental Plane ◽  
Dimensional Simulation ◽  
Rate Of Success

Abstract During thoracoscopic segmentectomy, where direct palpation of the tumour is not always possible, achieving adequate margins from the cancer is of crucial importance. It is thus mandatory to accurately identify the intersegmental plane (ISP). Indeed, inadequate determination and division of the ISP can lead to unsatisfactory oncological results. Our systematic review focused on the effectiveness of the different techniques for identifying the ISP, highlighting the fact that a 1-size-fits-all method is not feasible. Based on the published evidence, 6 main methods were reported, each with its pros and cons: inflation–deflation technique, selective resected segmental inflation, systemic injection of indocyanine green, injection of endobronchial dye, 3-dimensional simulation using multidetector computed tomography and virtual-assisted lung mapping. In conclusion, ISP demarcation is mandatory to achieve a high rate of success of thoracoscopic segmentectomy, and it is very helpful in surgical planning, especially when preoperative multidetector computed tomography and 3-dimensional reconstructions are routinely performed.

scholarly journals Multidetector Computed Tomography Angiography Findings of Chronic-Contained Thoracoabdominal Aortic Aneurysm Rupture with Severe Thoracal Vertebral Body Erosion

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Ruken Yuksekkaya ◽  
Ali Ekrem Koner ◽  
Fatih Celikyay ◽  
Murat Beyhan ◽  
Ferdag Almus ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Aortic Aneurysm ◽  
Multidetector Computed Tomography ◽  
Ct Angiography ◽  
Vertebral Body ◽  
Multidetector Ct ◽  
Thoracoabdominal Aortic Aneurysm ◽  
Aneurysm Rupture ◽  
Aortic Aneurysms ◽  
Adjacent Structures

Chronic-contained aortic aneurysm rupture with vertebral erosion is a rare entity with fatal complications. Multidetector computed tomography (CT) angiography is an important diagnostic method for the evaluation of the aortic aneurysms, their complications, and also the relationship between aneurysm and branching vessels and adjacent structures. We present the multidetector CT angiography findings of a 62-year-old patient with chronic-contained thoracoabdominal aortic aneurysm rupture causing severe vertebral body erosion.

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