نتایج جستجو برای: 3d ct scan

تعداد نتایج: 358332  

2016
Stuart A. G. Roberts Guirish A. Solanki

A seven-month-old male Asian baby presented with headache and a large right parietal scalp hematoma after falling from a bed onto a wooden floor. The infant was previously well, born via non-traumatic vaginal delivery following uneventful pregnancy. Normal developmental and growth milestones were met. On examination, Glasgow Coma Scale was 15 with no neurological deficits. In accordance with lo...

2015
André Aichert Jian Wang Roman Schaffert Arnd Dörfler Joachim Hornegger Andreas K. Maier

Geometry and physics of absorption imaging impose certain constraints on X-ray projections. Recently, the Epipolar Consistency Conditions (ECC) have been introduced and applied to motion correction in flat-detector computed tomography (CT). They are based on redundant information in transmission images along epipolar lines. Unlike other consistency conditions for CT scans, they act directly on ...

Abbas Veshkini Ali Reza Vajhi Dariush Vosough Majid Masoudifard, Sarang Sorouri

Objective-  To determine the possibility of three-dimensional ultrasonography (3DUS) and measurement of optical nerve sheet by this method. Design- Descriptive study. Animals- 10 mixed normal dogs (5males, 5 females), age 1-1.5 year, and weighting 15±5 kg Procedure- 3D ultrasounds of the eyes were evaluated and the normal optical nerves in 3DUS images were measured using Volouson 730 pro....

2017
Olaf Rodriguez Megan H. Noe Chandra Sehgal Susan Schultz Misha Rosenbach

3D HFU: 3-dimensional high-frequency ultrasound scan CSAMI: Cutaneous Sarcoidosis Activity and Morphology Instrument PET/CT: positron emission tomography/ computed tomography C utaneous involvement occurs in 25% to 30% of patients with sarcoidosis. Effective treatment of the disease has historically been challenging given a lack of an objective, reproducible marker of disease activity. Here we ...

2007
M. Prümmer L. Wigström R. Fahrig G. Lauritsch J. Hornegger

Cardiac C-arm CT is a promising technique that enables 3D cardiac image acquisition and real-time fluoroscopy on the same system. Retrospective ECG gating techniques have already been adapted from clinical cardiac CT that allow 3D reconstruction using retrospectively gated projection images of a multi-sweep C-arm CT scan according to the desired cardiac phase. However, it is known that retrospe...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
hassan mirmohammad sadeghi , dept. of oral & maxillofacial surgery, dental school, shahid beheshti university of medical sciences, tehran, iran alireza pournabi dept. of oral and maxillofacial surgery, dental school, shahid beheshti university of medical sciences, tehran, iran. mahshid namdari dept. of community of oral health, dental school, shahid beheshti university of medical sciences, tehran, iran

objectives: presence/absence of cervical lymph node metastasis plays a critical role in prognosis and survival of patients with oral squamous cell carcinoma (scc). this study was designed to assess the diagnostic accuracy of computed tomography (ct) scan for detection of cervical lymph node metastasis in oral scc in comparison with histopathological analysis after neck dissection methods: in th...

1999
Jürgen Weese Roland Göcke Graeme P. Penney Paul Desmedt Thorsten M. Buzug Heidrun Schumann

2D/3D registration makes it possible to use pre-operative CT scans during X-ray fluoroscopy guided interventions for navigation purposes. For this registration task a fast voxel-based method is presented, which uses a recently introduced similarity measure (pattern intensity). This measure is especially suitable for 2D/3D registration, because it is robust with respect to structures as, for ins...

2014
Tzung-Chi Huang Kuei-Ting Chou Yao-Ching Wang Geoffrey Zhang

PURPOSE Respiratory motion presents significant challenges for accurate PET/CT. It often introduces apparent increase of lesion size, reduction of measured standardized uptake value (SUV), and the mismatch in PET/CT fusion images. In this study, we developed the motion freeze method to use 100% of the counts collected by recombining the counts acquired from all phases of gated PET data into a s...

Journal: :Kathmandu University medical journal 2013
M Pokharel S Karki I Shrestha B L Shrestha K Khanal R C M Amatya

BACKGROUND Eagle's syndrome (Elongated styloid process) is often misdiagnosed due to its vague symptomatology. The diagnosis relies on detail history taking, palpation of styloid process in tonsillar fossa and imaging modalities. OBJECTIVE To assess the length and medial angulation of elongated styloid process with the help of three dimensional computed tomography (3D CT) scan and to describe...

2009
Alfonso Gastelum Strozzi Jorge Márquez Flores Flavio Trujillo Celine Duwig Blanca Prado Pavan Gamage Patrice Delmas

We propose to study the mechanical properties of a volcanic soil sample (monolith) using a computer model. We propose the use of CT-images to construct the Mechanical Computational Model. The image obtained from the CT-Scan give us a 3D model of the pores system of the monolith. This system relates the internal connectivity between different pores and the soil volume. To simulate fluid-solid in...

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