Prenatal diagnosis of congenital dislocated spine and complex heterotaxy syndrome with 3D ultrasound and helical computed tomography (helical CT)

2020 ◽  
Author(s):  
Armelle Lebreton ◽  
Madeleine Joubert ◽  
Benedicte Romefort ◽  
Claire Beneteau ◽  
Antoine Hamel ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Prenatal Diagnosis ◽  
Helical Ct ◽  
3D Ultrasound ◽  
Helical Computed Tomography ◽  
Heterotaxy Syndrome

scholarly journals 257 A New Procedure and Concept of Helical Computed Tomography Dose Index (HTDI) in Dosimetry of Helical CT

1995 ◽  
Vol 51 (10) ◽  
pp. 1328
Author(s):  
Yoshihisa Muramatsu ◽  
Noriko Akiyama ◽  
Kouzou Hanai ◽  
Yasuyuki Fujita ◽  
Syuichi Katsuta
Keyword(s):  
Computed Tomography ◽  
Helical Ct ◽  
Helical Computed Tomography ◽  
Computed Tomography Dose Index ◽  
Dose Index

scholarly journals Three-dimensional helical computed tomography in prenatal diagnosis of fetal skeletal dysplasia

2013 ◽  
Vol 42 (2) ◽  
pp. 161-168 ◽  
Author(s):  
G. Macé ◽  
P. Sonigo ◽  
V. Cormier-Daire ◽  
M.-C. Aubry ◽  
J. Martinovic ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Prenatal Diagnosis ◽  
Skeletal Dysplasia ◽  
Three Dimensional ◽  
Helical Computed Tomography

Utility of Helical Computed Tomography in the Study of Arytenoid Dislocation and Arytenoid Subluxation

1997 ◽  
Vol 106 (12) ◽  
pp. 1020-1023 ◽  
Author(s):  
George D. Lyons ◽  
Daniel W. Nuss ◽  
Albert E. Alexander ◽  
Mary A. Fazekas-May ◽  
Lisa David ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Direct Laryngoscopy ◽  
Helical Ct ◽  
Helical Computed Tomography ◽  
Radiographic Examination ◽  
Major Difficulty ◽  
Multiplanar Reconstructions ◽  
Arytenoid Dislocation ◽  
Arytenoid Subluxation

Conventional computed tomography (CT) has been considered a mainstay in the evaluation of the larynx. A major difficulty with utilizing this modality, especially in the study of the arytenoid, is the time necessary to perform a thin-slice examination through a structure that has a propensity to move with respiration and swallowing. Helical CT not only significantly reduces the time necessary to study the larynx, but enables one to perform multiple high-resolution multiplanar reconstructions. Eleven patients with arytenoid abnormalities documented by strobovideolaryngoscopy or direct laryngoscopy were imaged with helical CT. A comprehensive radiographic examination illustrating the cricoarytenoid relationship in all of the subjects was completed in less than 20 seconds by using axial reconstructions in 2-mm-thick slices at 1-mm intervals, with subsequently derived sagittal and coronal reconstructions. Helical CT may be a useful adjunct in the diagnosis of arytenoid subluxation or dislocation.

scholarly journals Prenatal Diagnosis of Sirenomelia in the Late Second Trimester with Three-Dimensional Helical Computed Tomography

2011 ◽  
Vol 225 (2) ◽  
pp. 85-87 ◽  
Author(s):  
Tetsuo Ono ◽  
Daisuke Katsura ◽  
Shunichiro Tsuji ◽  
Hiroko Yomo ◽  
Akiko Ishiko ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Prenatal Diagnosis ◽  
Three Dimensional ◽  
Helical Computed Tomography ◽  
Second Trimester

scholarly journals Craniosynostosis: prenatal diagnosis by 2D/3D ultrasound, magnetic resonance imaging and computed tomography.

2016 ◽  
Vol 18 (3) ◽  
pp. 378 ◽  
Author(s):  
Talita Micheletti Helfer ◽  
Alberto Borges Peixoto ◽  
Gabriele Tonni ◽  
Edward Araujo Júnior
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Prenatal Diagnosis ◽  
Magnetic Resonance ◽  
Three Dimensional ◽  
3D Ultrasound ◽  
Resonance Imaging ◽  
Perinatal Complications ◽  
Wide Range ◽  
Magnetic Resonance Imaging Mri

Craniosynostosis is defined as the process of premature fusion of one or more of the cranial sutures.  It is a common condition that occurs in about 1 to 2,000 live births. Craniosynostosis may be classified in primary or secondary. It is also classified as nonsyndromic or syndromic. According to suture commitment, craniosynostosis may affect a single suture or multiple sutures. There is a wide range of syndromes involving craniosynostosis and the most common are Apert, Pffeifer, Crouzon, Shaethre-Chotzen and Muenke syndromes. The underlying etiology of nonsyndromic craniosynostosis is unknown. Mutations in the fibroblast growth factor (FGF) signalling pathway play a crucial role in the etiology of craniosynostosis syndromes. Prenatal ultrasound`s detection rate of craniosynostosis is low. Nowadays, different methods can be applied for prenatal diagnosis of craniosynostosis, such as two-dimensional (2D) and three-dimensional (3D) ultrasound, magnetic resonance imaging (MRI), computed tomography (CT) scan and, finally, molecular diagnosis. The presence of craniosynostosis may affect the birthing process. Fetuses with craniosynostosis also have higher rates of perinatal complications. In order to avoid the risks of untreated craniosynostosis, children are usually treated surgically soon after postnatal diagnosis.

Prenatal diagnosis of platyspondylic skeletal dysplasia Torrance type with three-dimensional helical computed tomography

2009 ◽  
Vol 29 (13) ◽  
pp. 1282-1284 ◽  
Author(s):  
Shunsuke Tamaru ◽  
Akihiko Kikuchi ◽  
Kimiyo Takagi ◽  
Masao Wakamatsu ◽  
Kyoko Ono ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Prenatal Diagnosis ◽  
Skeletal Dysplasia ◽  
Three Dimensional ◽  
Helical Computed Tomography

Stress Radiography and Stress Examination of the Talocrural and Subtalar Joint on Helical Computed Tomography

1997 ◽  
Vol 18 (8) ◽  
pp. 482-488 ◽  
Author(s):  
F.J. van Hellemondt ◽  
J.W.K. Louwerens ◽  
E.S. Sijbrandij ◽  
A.P.G. van Gils
Keyword(s):  
Computed Tomography ◽  
Subtalar Joint ◽  
Facet Joint ◽  
Three Dimensional ◽  
Helical Ct ◽  
Helical Computed Tomography ◽  
Chronic Instability ◽  
Significant Difference ◽  
Subtalar Instability ◽  
Stress Examination

The main objective of this study was to compare subtalar inversion stress views using the Brodén view with inversion stress views on helical computed tomography (CT). One of the drawbacks of routine radiography is the imaging of three-dimensional structures in a two-dimensional plane. We investigated whether the use of helical CT would lead to a more objective and clearer measurable method to determine the amount of tilt in the subtalar joint. A group of 15 patients with unilateral chronic instability complaints and clinically suspected subtalar instability was examined. The contralateral asymptomatic foot was used as control. A variable amount of subtalar tilt (range, 4° to 18°) was demonstrated in all cases on stress radiographs, without finding significant difference between the symptomatic and asymptomatic feet. However, contrary to the findings at the talocrural level, subtalar tilt was found in none of the patients using helical CT. Thus, we now doubt that the tilt seen during stress examination using the Brodén view is the true amount of tilt. It may be that the lateral opening, seen on these radiographs, largely results from imaging two planes that have made a translatory and rotatory movement relative to each other in an oblique direction. It is concluded that the Brodén stress examination might not be useful for screening patients with subtalar instability. Associated anomalies not visible on the radiographs were detected by helical CT. In four cases, narrowing of the articular cartilage and irregular and hypertrophic bone formation at the middle facet joint of the subtalar joints were found. It is likely that these changes cause disturbance of function of this joint and it is suggested that the subjective complaint of instability with “giving way” is not only caused by hypermobility, but can be caused by other disturbances of normal motion.

Three-dimensional imaging of ENT diseases with helical computed tomography

1996 ◽  
Vol 110 (6) ◽  
pp. 604-608 ◽  
Author(s):  
Hideki Muraoka ◽  
Atsunobu Tsunoda ◽  
Masahiro Kojima ◽  
Hisashi Tokano ◽  
Atsushi Komatsuzaki
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Helical Ct ◽  
Diagnostic Value ◽  
Helical Computed Tomography ◽  
Middle Ear Surgery ◽  
Ear Surgery ◽  
Vocal Fold Palsy ◽  
Maxillary Fracture ◽  
Nose And Throat

AbstractWe have employed helical computed tomography (CT) to evaluate ear, nose and throat diseases, and present herein seven typical cases: middle ear surgery, osteoma of the external ear canal, maxillary fracture, tripod fracture, submandibular gland calculus, epiglottic abscess and vocal fold palsy. Helical (CT) facilitates the assessment of these diseases and its high diagnostic value is described.

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