Search results for " MR"

CT AND MR INAGING FINDINGS IN HEPATIC PELIOSIS

2004

Rotator cuff calcific tendinopathy: from diagnosis to treatment

2018

Rotator cuff calcific tendinopathy (RCCT) is a very common condition caused by the presence of calcific deposits in the rotator cuff (RC) or in the subacromial-subdeltoid (SASD) bursa when calcification spreads around the tendons. The pathogenetic mechanism of RCCT is still unclear. It seems to be related to cell-mediated disease in which metaplastic transformation of tenocytes into chondrocytes induces calcification inside the tendon of the RC. RCCT is a frequent finding in the RC that may cause significant shoulder pain and disability. It can be easily diagnosed with imaging studies as conventional radiography (CR) or ultrasound (US). Conservative management of RCCT usually involves rest,…

Multi-modal non-rigid registration of medical images based on mutual information maximization

2007

In this paper, a new multi-modal non-rigid registration technique for medical images is presented. Firstly, the registration problem is outlined and some of the most common approaches reported, then, the proposed algorithm is presented. The proposed technique is based on mutual information maximization and computes a deformation field through a suitable globally smoothed affine piecewise transformation. The algorithm has been conceived with particular attention to computational load and accuracy of results. Experimental results involving intra-patient, inter-patients and atlas images on brain CT and MR (T1, T2 and PD modalities) are reported.

A Shape-based Statistical Method to Retrieve 2D TRUS-MR Slice Correspondence for Prostate Biopsy

2012

International audience; This paper presents a method based on shape-context and statistical measures to match interventional 2D Trans Rectal Ultrasound (TRUS) slice during prostate biopsy to a 2D Magnetic Resonance (MR) slice of a pre-acquired prostate volume. Accurate biopsy tissue sampling requires translation of the MR slice information on the TRUS guided biopsy slice. However, this translation or fusion requires the knowledge of the spatial position of the TRUS slice and this is only possible with the use of an electro-magnetic (EM) tracker attached to the TRUS probe. Since, the use of EM tracker is not common in clinical practice and 3D TRUS is not used during biopsy, we propose to per…

Challenges and Controversies in the Diagnosis of MRONJ

2019

Medication-related osteonecrosis of the jaw (MRONJ) is a relatively rare but potentially seriousand debilitating complication [...]

Szczepienie przeciw COVID-19 przy podejrzeniu anafilaksji po pierwszej dawce szczepionki

2022

Wraz z rosnącą liczbą wykonanych szczepień przeciwko COVID-19 (p/COVID-19) wzrasta także liczba zgłaszanych reakcji o różnym obrazie klinicznym po podaniu szczepionki. Mimo że reakcje te występują stosunkowo rzadko i nie zawsze mają charakter alergiczny, to budzą lęk. Szczególnie pacjenci, którzy doznali działań niepożądanych szczepienia, często nie są kwalifikowani do podania kolejnych dawek tym samym preparatem. Rozpoznanie ciężkiej reakcji anafilaktycznej po podaniu szczepionki mRNA i/lub uczulenie na jej składniki są przeciwwskazaniami do szczepienia preparatem mRNA p/COVID-19.
 Prezentowany przypadek pacjentki przedstawia problem prawidłowej kwalifikacji reakcji, które miały miejs…

TRANS-CRANIAL MRI-GUIDED FOCUSED ULTRASOUND SURGERY (TCMRGFUS): PRELIMINARY ITALIAN (AND WORLD-FIRST) EXPERIENCE AT 1,5 TESLA (first 3 cases treated)

2015

PURPOSE: We present our preliminary results achieved with the first Italian installation of a trans-cranial MRI-guided Focused Ultrasound Surgery (tcMRgFUS) certified system for functional neurosurgery. Moreover, to our knowledge, this is the world-first tcMRgFUS system ever installed on a 1.5T MRI unit. TcMRgFUS is a promising new technology for the non-invasive treatment of neurologic disorders such as Essential Tremor (ET), tremor dominant idiopathic Parkinson's Disease (PD) and Neuropathic Pain (NP). This is a new method for focal targeting and lesioning of specific regions in the brain through intact skull by using high intensity focused ultrasound beam to achieve thermal ablation and …

Trans-cranial MRI-guided Focused Ultrasound Surgery (tcMRgFUS): preliminary Italian (and world-first) experience at 1,5 Tesla (first 5 patient treate…

2015

Chirurgia trans-cranica mediante ultrasuoni focalizzati ad alta intensità su guida RM: esperienza preliminare a 1,5T (prima paziente trattata)

2015

Presentiamo i risultati preliminari ottenuti con la prima istallazione italiana di un’apparecchiatura per la neurochirurgia funzionale mediante ultrasuoni focalizzati ad alta intensità su guida RM (trans-cranial MRI-guided Focused Ultrasound Surgery, tcMRgFUS); si tratta tra l’altro della prima apparecchiatura tcMRgFUS al mondo mai installata su uno scanner RM da 1,5T. Tale apparecchiatura è destinata a trattamenti di neurochirurgia funzionale di pazienti con tremore essenziale (Essential Tremor, ET), Parkinson idiopatico (Parkinson Disease, PD) prevalentemente tremorigeno e dolore neuropatico (Neuropa- thic Pain, NP). Sanno presentati i risultati ottenuti con i primi pazienti sottoposti …

Nanosystem for diagnosis and photothermal treatment of tumors

2022

The invention relates to a nanosystem for the diagnosis, image-guided treatment of tumors and monitoring of the tumor microenvironment. The nanosystem is a contrast agent comprising a polymer shell based on a hyaluronic acid nanogel, super-parameg-netic iron oxide nanoparticles (SPIONs) and carbon nanoparticles (CDs).