Results 51 to 60 of about 99,444 (322)

Experimental study of periostin promoting rapid distraction osteogenesis of the rabbit mandible

口腔疾病防治, 2019
Objective To explore the promoting effect of periostin on rapid distraction osteogenesis of the rabbit mandible and provide experimental evidence for the clinical use of periostin to promote osteogenesis.
JIANG Xiaowen, HUANG Huaqing, CHEN Jinyong, PENG Haiyan   +3 more
doaj   +1 more source

Assessing proton plans with three different beam delivery systems versus photon plans for head and neck tumors

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose To compare plan quality among photon volumetric modulated arc therapy (VMAT) and intensity‐modulated proton therapy (IMPT) with robustness using three different proton beam delivery systems with various spot size (σ) ranges: cyclotron‐generated proton beams (CPBs) (σ: 2.7–7.0 mm), linear accelerator proton beams (LPBs) (σ: 2.9–5.5 mm),
Tara Gray, Chieh‐Wen Liu, Saeed Ahmed, Anna Maria Kolano, Jeremy Donaghue, Shlomo Koyfman, Neil Woody, Shauna R. Campbell, Jonathan B. Farr, Ping Xia   +9 more
wiley   +1 more source

Primary intraosseous carcinoma of mandible

Journal of Indian Academy of Oral Medicine and Radiology, 2009
Primary intraosseous carcinoma (PIOC) is a rare malignant neoplasm of the jaw which is locally aggressive with poor prognosis. These tumors are believed to arise from the odontogenic epithelium and hence are referred to as odontogenic carcinomas.
Ankur Jethlia, Vaishali Keluskar, Arvind Shetti   +2 more
doaj   +1 more source

A case of large adenomatoid odontogenic tumor in the posterior region of the mandible showing root resorption

Journal of Oral Medicine and Oral Surgery, 2021
Introduction: Adenomatoid odontogenic tumor (AOT) is a rare tumor of epithelial origin, and usually presents as a unilocular radiolucency in the maxillary anterior region in adolescent females.
Fujita Atsushi, Ueyama Yoshiya, Nagatsuka Hitoshi, Kawamata Hitoshi   +3 more
doaj   +1 more source

Recurrent convolutional neural networks for mandible segmentation from computed tomography [PDF]

arXiv, 2020
Recently, accurate mandible segmentation in CT scans based on deep learning methods has attracted much attention. However, there still exist two major challenges, namely, metal artifacts among mandibles and large variations in shape or size among individuals.
arxiv  

Smooth Extrapolation of Unknown Anatomy via Statistical Shape Models [PDF]

In Medical Imaging 2015: Image-Guided Procedures, Robotic Interventions, and Modeling 2015 Mar 18 (Vol. 9415, p. 941524). International Society for Optics and Photonics, 2019
Several methods to perform extrapolation of unknown anatomy were evaluated. The primary application is to enhance surgical procedures that may use partial medical images or medical images of incomplete anatomy. Le Fort-based, face-jaw-teeth transplant is one such procedure. From CT data of 36 skulls and 21 mandibles separate Statistical Shape Models of
arxiv   +1 more source

From 2D to 3D gamma passing rate tolerance and action limits for patient‐specific quality assurance in volumetric‐modulated arc therapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Volumetric modulated arc therapy (VMAT) requires an accurate patient‐specific quality assurance (PSQA) program. In clinical practice, this is usually performed using the γ‐index and the two‐dimensional gamma passing rate (2D %GP). A three‐dimensional (3D) index incorporating the patient anatomy could be more useful for the 3D dose ...
Christos Zarros, George Patatoukas, Nikos Kollaros, Marina Chalkia, Andromachi Kougioumtzopoulou, Vasilios Kouloulias, Kalliopi Platoni   +6 more
wiley   +1 more source

Is cone-beam computed tomography diagnostic for anterior Stafne bone cyst: Report of a rare case

Dental Hypotheses, 2015
Introduction: The incidence of anterior Stafne bone cyst (lingual mandibular bone defect, static bone cyst, latent bone cyst, developmental submandibular gland defect of the mandible) has been estimated to between 0.009% and 0.3%.
Abbas Shokri, Maryam Baharvand, Hamed Mortazavi   +2 more
doaj   +1 more source

Vertical Movements and Rotations of the Ectopic Mandibular Canine Registered in Cross-Sectional and Longitudinal Studies on Orthopantomograms from 54 Patients Diagnosed with Mandibular Canine Ectopia

Dental Hypotheses, 2020
Introduction: The hypothesis behind this study is that the ectopic mandibular canines move vertically in the mandibular bone during childhood and puberty.
Palle Svanholt, Michael Svanholt, Inger Kjaer   +2 more
doaj   +1 more source

Closing the gap in plan quality: Leveraging deep‐learning dose prediction for adaptive radiotherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Balancing quality and efficiency has been a challenge for online adaptive therapy. Most systems start the online re‐optimization with the original planning goals. While some systems allow planners to modify the planning goals, achieving a high‐quality plan within time constraints remains a common barrier.
Sean J. Domal, Austen Maniscalco, Justin Visak, Michael Dohopolski, Dominic Moon, Vladimir Avkshtol, Dan Nguyen, Steve Jiang, David Sher, Mu‐ Han Lin   +9 more
wiley   +1 more source