Search results for "Ultra"

TRANS-FUSIMO - clinical translation of patient specific planning and conduction of FUS treatment in moving organs

2015

The movement of the target challenges the application of high intensive focused ultrasound (HiFU/MRgFUS) for the treatment of malignancies in moving abdominal organs such as liver and kidney. Moreover, the anatomical location of the lesion is often behind the rib cage. The physiology of the organs, the dynamic and complex blood perfusion impairs the energy disposition in the tissue due to the heat transfer within the organ. To explore the full potential of extracorporeal FUS to safely and precisely destroy tissue in the depth of a moving organ requires sophisticated software and advanced hardware. In the EU project FUSIMO (http://www.fusimo.eu) a software demonstrator for the patient specif…

Prurigo nodularis as index symptom of (non-Hodgkin) lymphoma: ultrasound as a helpful diagnostic tool in dermatological disorders of unknown origin

2014

Ultrasound-guided infraclavicular cannulation of the subclavian vein – still an ongoing misconception

2020

TU-C-16A-01: Joint AAPM/SEFM/AMPR Educational Workshop On “Education of Radiotherapy Physicists”

2014

This workshop is jointly organized by the AAPM, the Spanish (SEFM) and the Russian (AMPR) Medical Physics Societies, as part of formal educational exchange agreements signed by the AAPM with each one of these two societies.With the rapid technological advances in radiation therapy both for treatment and imaging, it is challenging how physics is taught to medical physicists practicing in radiation therapy. The main Objectives: of this workshop is to bring forth current status, challenges and issues related to education of radiation therapy physicists here in the US, Spain and Russia. Medical physicists from each one of these countries will present educational requirements of international re…

Weekend courses on ultrasonography as a form of teaching knowledge and the skills necessary to perform ultrasounds in the family physician’s practice

2017

Background. Growth in ultrasound use by non-radiologists has outpaced radiologist-performed ultrasound in the last decade. Poland has a well-organized system of teaching ultrasonography. Objectives. To establish whether family physicians, after completion of weekend courses on ultrasound abdominal cavity imaging, recommend this form of training. To identify main reasons for family physician to attend training in USG, their preferences regarding the form of such courses and the difficulties most often faced by family physicians when performing a USG. Material and methods. This survey-based study using the authors’ own questionnaire was conducted in March 2016 among 81 primary care physicians…

Ultrasonography features of the intrinsic foot muscles in patients with and without plantar fasciitis: A novel case-control research study

2021

IntroductionPlantar fasciitis (PF) is the most common cause of heel pain.(1) This condition was described as a degenerative syndrome associated with pain, lack of functionality and stiffness on the plantar fascia. The aim of the present study was to compare with ultrasound imaging (USI) the thickness and cross-sectional area of the intrinsic foot muscles between individuals with and without plantar fasciitis (PF).Material and methodsA total of 64 volunteers from 18 to 55 years were recruited for the present study. The sample was divided in two groups: A group, composed of participants diagnosed by PF (n = 32) and B group, composed by healthy participants (n = 32).ResultsUSI measurements for…

Sonographische Charakteristika laterozervikaler Raumforderungen

2001

UNLABELLED Sonography of the head and neck mainly focuses on tumours of the lateral neck. Even though most of these masses are enlarged lymph nodes, other tumors have to be considered. AIM To determine whether different pathological cervical masses display a characteristic sonographic morphology. METHOD On the basis of 530 sonographical findings in the neck, typical ultrasound characteristics either in B-scan or in colour coded sonography were demonstrated. RESULTS Apart from enlarged lymph nodes, it was possible to differentiate other occurrences such as branchial cysts, abscesses, laryngoceles, lipomas, neurinomas, glomus tumours, paragangliomas and also fibromas by their specific ultraso…

Indications and limitations of perineal ultrasound examination.

2010

To The Editor: Perineal or perianal ultrasound (PNUS) is an effective, inexpensive, easily available and not painful but as of now rarely applied diagnostic tool important in the hands of gastroent...

The anatomy of the heart in the sonogram. A comparison between anatomic and ultrasonic cross-section.

1977

Cardiac sonography has only recently been introduced as a diagnostic procedure. In order to facilitate the interpretation and evaluation of the ultrasonic cardiac cross-section displayed by this two-dimensional technique, we performed anatomic cross-sections corresponding to ultrasonic cross-sections. The ultrasonic cross-sectional images were taken from children with a real-time-motion scanner. The anatomic cross-sections were taken from adult hearts. Two ultrasonic transverse cross-sections are compared with the two corresponding anatomic cross-sections and three ultrasonic longitudinal cross-sections with one corresponding anatomic cross-section. The direct comparison between anatomic an…

Tissue classification by texture and spectral analysis of intracoronary ultrasound radio-frequency data

2002

Imaging of vascular structures by intracoronary ultrasound allows in principal the recognition of different lesion types due to the echomorphology in the B-mode image. The subjective visual diagnosis is often difficult, especially the differentiation between thrombi and non-calcified plaque. The aim of this study was the extraction of features from the ultrasound radio-frequency signal for an objective characterization of coronary tissue. Methods of texture analysis and frequency analysis were used to differentiate red and white thrombi in vitro. Eight texture parameters of first and second order significantly differentiated red and white thrombi. The backscatter transfer function of red th…