Philippe Petit

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CONTEXT Elastography uses ultrasound (US) to assess elasticity. Shear wave elastography (SWE) is a new technique that estimates tissue stiffness in real time and is quantitative and user independent. OBJECTIVES The aim of the study was to assess the efficiency of SWE in predicting malignancy and to compare SWE with US. DESIGN Ninety-three patients and(More)
OBJECTIVES To evaluate the ability of a threshold value in ShearWave™ elastography to rule out malignant thyroid nodules while studying its pertinence in association with morphological signs. EQUIPMENT AND METHODS 148 patients (110 women and 38 men; 52.5 y.o. 15.8) referred for surgery of thyroid nodules underwent standard ultrasound as well as(More)
The aim of this study was to compare the clinical usefulness of ultrasmall superparamagnetic iron oxide (USPIO) MR contrast media (Sinerem, Guerbet Laboratories, Aulnay-sous-Bois, France) with precontrast MRI in the diagnosis of metastatic lymph nodes in patients with head and neck squamous cell carcinoma, using histology as gold standard. Eighty-one(More)
OBJECTIVE Recent reports indicate that, compared with MR imaging, plain film radiography often underestimates the extent of injury in children with physeal fracture-separation. Such underestimation may have significant therapeutic and prognostic outcomes. We performed this study to assess the benefit of MR imaging compared with plain film radiography in the(More)
PURPOSE To retrospectively assess the frequency of adverse events related to percutaneous preoperative portal vein embolization (PPVE). MATERIALS AND METHODS Institutional review board did not require its approval or patient informed consent for this study. The adverse events that occurred during PPVE or until planned hepatic surgery was performed or(More)
The authors have analyzed a retrospective series of 27 aneurysmal bone cysts (ABCs) in children and adolescents. The average age at diagnosis was 10 years (range: 3 years 7 months to 16 years), with a mean follow-up of 5 years (range: 1 month to 13 years 9 months). Pathologic fractures (8 cases) and pain (8 cases) were the main reasons for consultation. Of(More)
The determination of elasticity index by elastography has been recently proposed in the evaluation of thyroid nodules, since malignancy is correlated with stiffness of the nodules. The aim of this report is to give an overview on different techniques and results reported by eleven groups active on the field. Advantages and limitations of elastography are(More)
This paper presents the results of structural tests to investigate, first, the relationships between geometric and constitutive characteristics of ribs and, second, their mechanical behaviour and rupture threshold. A new methodology was developed that included tests on complete isolated ribs. These tests simulated anterior-posterior loading, as seen in(More)