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Diagnostic and Interventional Imaging

D M Kim, I H Lee, J Y Park, S-B Hwang, D S Yoo, C J Song
PURPOSE: To assess the magnetic resonance imaging (MRI) findings, including diffusion-weighted imaging (DWI) in patients with acute carbon monoxide (CO) poisoning and correlate MRI findings with carboxyhemoglobin levels. MATERIALS AND METHODS: The MRI examinations and medical records of seven men with a mean age of 43±16.0years (SD) (range: 25-63 years) with acute CO poisoning were reviewed. MRI examinations were analyzed with respect to lesion location, imaging presentation on T1- and T2-weighted images, and diffusion characteristics on DWI and apparent diffusion coefficient (ADC) maps...
November 24, 2016: Diagnostic and Interventional Imaging
Y Cruypeninck, B Dubourg, P Michelin, B Godin, C Savoye-Collet, E Gérardin, J-N Dacher
No abstract text is available yet for this article.
November 23, 2016: Diagnostic and Interventional Imaging
A Larbi, B Fourneret, C Lukas, M-P Baron, N Molinari, P Taourel, C Cyteval
OBJECTIVE: The primary goal of this study was to determine the prevalence and topographic distribution of spinal lesions in lower thoracic and lumbar spine on magnetic resonance imaging (MRI) in patients with recently diagnosed with spondyloarthritis. The secondary goal was to identify variables associated with vertebral patterns consistent with spondyloarthritis on MRI. PATIENTS AND METHODS: A total of 112 HLA-B27 positive patients with recently diagnosed spondyloarthritis were retrospectively included...
November 23, 2016: Diagnostic and Interventional Imaging
C Dromain, D Déandréis, J-Y Scoazec, D Goere, M Ducreux, E Baudin, L Tselikas
Pancreatic neuroendocrine tumors (PNETs) are rare and represent a heterogeneous disease. PNET can be functioning or non-functioning with different clinical presentations and different prognosis based on WHO and pTNM classifications. The role of imaging includes the localization of small functioning tumor, differentiation of these tumors from adenocarcinoma, identification of signs of malignancy and evaluation of extent. PNETs have a broad spectrum of appearance. On CT and MRI, most of functioning PNETs are well defined small tumors with intense and homogeneous enhancement on arterial and portal phases...
November 18, 2016: Diagnostic and Interventional Imaging
M Wangermez
Computed tomography (CT) and endoscopic ultrasound (EUS) are the two most effective techniques for the assessment of pancreatic cancers. CT has revolutionized the field of tumor imaging in pancreatic cancer and is now a well-established imaging technique for diagnosis and staging. However, EUS still plays an important role in several situations, especially when the diagnosis is uncertain or when histopathological confirmation of the lesion is needed. Similarly, regarding cystic lesions, magnetic resonance imaging and CT have very good performances but are often inadequate because the diagnosis can be difficult to establish, while the consequences for the patient are major...
November 17, 2016: Diagnostic and Interventional Imaging
J-P Tasu, G Vesselle, G Herpe, J-P Richer, S Boucecbi, S Vélasco, M Carretier, B Debeane, D Tougeron
Pancreatic adenocarcinoma is one of the solid cancers associated with the poorest prognosis; the only curative treatment remains surgical resection but in most cases, this treatment is not possible because of distant metastasis or local extension. Irreversible electroporation is a new tumor ablation technique, which provides cellular apoptosis without any thermal coagulation effect. This technique helps preserve the ducts, vessels or nerves located in the treatment area. This article reviews the current knowledge regarding the use of electroporation for the treatment of pancreatic adenocarcinoma...
November 14, 2016: Diagnostic and Interventional Imaging
S Nougaret, L Mannelli, M-A Pierredon, V Schembri, B Guiu
Cystic pancreatic lesions vary from benign to malignant entities and are increasingly detected on cross-sectional imaging. Knowledge of the imaging appearances of cystic pancreatic lesions may help radiologists in their diagnostic reporting and management. In this review, we discuss the morphologic classification of these lesions based on a diagnostic algorithm as well as the management of these lesions.
November 10, 2016: Diagnostic and Interventional Imaging
M Barral, S A Faraoun, E K Fishman, A Dohan, C Pozzessere, M-A Berthelin, P Bazeries, M Barat, C Hoeffel, P Soyer
The increasing use of abdominal imaging has led to a growing incidence of traditionally uncommon pancreatic tumors. These rare tumors have specific imaging features whose knowledge may heighten confidence in characterization and may avoid unnecessary surgical procedures when imaging findings suggest a benign condition. Computed tomography (CT) is the modality with which rare pancreatic tumors are incidentally detected in the majority of cases. Magnetic resonance imaging (MRI) is often performed as a second line examination for further characterization...
November 4, 2016: Diagnostic and Interventional Imaging
M-P Vullierme, M Lagadec
Early detection of pancreatic adenocarcinoma is the goal of imaging, enabling curative surgery. The identification of high-grade dysplastic precursor lesions is even more beneficial. Two forms are now better known: pancreatic intraepithelial neoplasia (PanIN) and intraductal papillary mucinous neoplasm (IPMN). To detect these lesions with imaging, we need to know the patterns associated with them. A screening program could then be used to pinpoint them. This program could not be applied to the entire population...
November 2, 2016: Diagnostic and Interventional Imaging
P-A Barral, M Saeed-Kilani, F Tradi, A Dabadie, J Izaaryene, J Soussan, J-M Bartoli, V Vidal
PURPOSE: The purpose of this study was to evaluate the effectiveness of ethylene vinyl alcohol copolymer (Onyx) as a single embolic agent for percutaneous arterial treatment of hemorrhage due to uterine arteriovenous malformations (AVMs). MATERIALS AND METHODS: Twelve women (mean age, 33 years) with metrorrhagia due to uterine AVMs who were treated by percutaneous arterial embolization using Onyx as a single embolic agent were retrospectively included. The diagnosis of uterine AVM was suggested by pelvic ultrasound and/or magnetic resonance imaging findings and further confirmed by angiography...
October 21, 2016: Diagnostic and Interventional Imaging
C Samanci, D Alis, F E Ustabasioglu, E Ozmen, A K Ucar, M Aslan, H A Habibi, S Bakan, B Ozcabi, S O Evliyaoğlu, I Adaletli
PURPOSE: The purpose of this study was to assess the diagnostic value of measuring the apparent diffusion coefficient (ADC) of ovarian stroma in polycystic ovary syndrome (PCOS). MATERIALS AND METHODS: This study was approved by the institutional review board and informed consent was obtained from each women. A total of 17 women (mean age, 22.2 years±5.1 [SD]; range, 16-33 years) with a diagnosis of PCOS according to the Androgen Excess and PCOS Society criteria and 18 healthy women (mean age, 22...
October 20, 2016: Diagnostic and Interventional Imaging
O Ozbek, H E Kaya, A Nayman, T B Saritas, I Guler, O Koc, H Karakus
PURPOSE: The purpose of this study was to assess the efficacy of a modified percutaneous nephrostomy procedure for grade III-IV hydronephrosis in neonates. MATERIAL AND METHODS: Eleven neonates (five girls, six boys) with a mean age of 13.7days±9.9 (SD) (range, 4-28days) with pronounced hydronephrosis had percutaneous nephrostomy using a modified procedure. In all patients, percutaneous nephrostomy was performed with a trocar catheter under ultrasound guidance and then the catheter was placed into the collecting system without prior dilatation...
October 17, 2016: Diagnostic and Interventional Imaging
N Alberti, E Marie, M Cuinet, G Pontarollo, A Crombe, P Vignoli
No abstract text is available yet for this article.
October 17, 2016: Diagnostic and Interventional Imaging
F Legou, V Tacher, T Damy, V Planté-Bordeneuve, S Rappeneau, N Benhaiem, J Rosso, E Itti, A Luciani, H Kobeiter, A Rahmouni, J-F Deux
PURPOSE: To detect if a difference of T2 ratio, defined as the signal intensity (SI) of the myocardium divided by the SI of the skeletal muscle on T2-weigthed cardiac magnetic resonance (CMR) imaging, exists between patients with systemic amyloidosis, by comparison to control subjects. To determine if a relationship exists between T2 ratio and the overall mortality. MATERIALS AND METHODS: CMR imaging examinations of 73 consecutive patients (48 men, 25 women; mean age, 63 years±15[SD]) with amyloidosis and suspicion of CA and 27 control subjects were retrospectively analyzed after institutional review board approval...
September 28, 2016: Diagnostic and Interventional Imaging
C Cassinotto, A Sa-Cunha, H Trillaud
Neoadjuvant chemotherapy has become common practice in the management of patients with non-metastatic pancreatic adenocarcinoma. This strategy helps better select patients who would benefit from surgical resection and also increase the number of patients amenable to surgical resection whose tumor seemed too locally advanced on initial imaging. However, several studies have shown that the radiological evaluation of the response after neoadjuvant therapy is difficult for pancreatic carcinoma. This article reviews the scientific basis of neoadjuvant therapy for non-metastatic pancreatic cancer and provides an update on tumor response evaluation with imaging after neoadjuvant treatment...
September 27, 2016: Diagnostic and Interventional Imaging
S B Paul, E Dhamija, S R Gamanagatti, V Sreenivas, D P Yadav, S Jain, Shalimar, S K Acharya
PURPOSE: To compare the diagnostic accuracy of contrast-enhanced ultrasound (CEUS) with that of multiphase computed tomography (CT) in the evaluation of tumor response to transarterial chemoembolization (TACE) of hepatocellular carcinoma (HCC). MATERIAL AND METHODS: Fifty patients (41 men, 9 women; mean age, 53 years±12.5 [SD]) with a total of 70 HCCs (mean size, 5cm±3 [SD]) were evaluated. Post-TACE therapeutic assessment of HCC was done at 4 weeks. Patients with TACE done earlier and reporting with suspicion for recurrence were also included...
September 27, 2016: Diagnostic and Interventional Imaging
S Petit, C Vallin, B Morel, P Bertrand, P Blouin, H Lardy, D Sirinelli
PURPOSE: The goal of this study was to evaluate the incremental value of unenhanced phase in the initial evaluation of retroperitoneal tumors in children by comparison with an enhanced phase alone using computed tomography (CT). MATERIALS AND METHODS: A total of 53 patients (26 girls, 27 boys) with a total of 53 tumors who had CT examination of the abdomen and pelvis for the initial assessment of retroperitoneal tumor were retrospectively included. All CT examinations were obtained with an unenhanced set of CT images and a set of CT images obtained after intravenous administration of iodinated contrast material...
September 26, 2016: Diagnostic and Interventional Imaging
X Wu, P Reinikainen, A Vanhanen, M Kapanen, T Vierikko, P Ryymin, S Hyödynmaa, P-L Kellokumpu-Lehtinen
OBJECTIVES: To investigate whether diffusion-weighted imaging (DWI) apparent diffusion coefficient (ADC) correlates with prostate cancer aggressiveness and further to compare the diagnostic performance of ADC and normalized ADC (nADC: normalized to non-tumor tissue). PATIENTS AND METHODS: Thirty pre-treatment patients (mean age, 69years; range: 59-78years) with prostate cancer underwent magnetic resonance imaging (MRI) examination, including DWI with three b values: 50, 400, and 800s/mm(2)...
September 26, 2016: Diagnostic and Interventional Imaging
L Li, R Roth, P Germaine, S Ren, M Lee, K Hunter, E Tinney, L Liao
OBJECTIVE: The purpose of this study was to retrospectively compare the diagnostic performance of contrast-enhanced spectral mammography (CESM) with that of breast magnetic resonance imaging (BMRI) in breast cancer detection using parameters, including sensitivity, positive predictive value (PPV), lesion size, morphology, lesion and background enhancement, and examination time. MATERIALS AND METHODS: A total of 48 women (mean age, 56years±10.6 [SD]) with breast lesions detected between October 2012 and March 2014 were included...
September 26, 2016: Diagnostic and Interventional Imaging
M Garetier, L Deloire, F Dédouit, E Dumousset, C Saccardy, D Ben Salem
Suicide is the eighth cause of mortality in France and the leading cause in people aged between 25 and 34 years. The most common methods of suicide are hanging, self-poisoning with medicines and firearms. Postmortem computed tomography (CT) is a useful adjunct to autopsy to confirm suicide and exclude other causes of death. At autopsy, fractures of the hyoid bone or thyroid cartilage, or both, are found in more than 50% of suicidal hangings. Cervical vertebra fractures are rare and only seen in suicide victims jumping from a great height...
September 26, 2016: Diagnostic and Interventional Imaging
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