OBJECTIVE: The purpose of this series was to describe the sonographic findings of inguinal endometriosis. METHODS: This was a retrospective analysis of 3 cases of inguinal endometriosis. The following gray scale and color Doppler sonographic features were analyzed: size, shape, echogenicity, and blood flow within inguinal endometriosis. RESULTS: The size ...

A novel coded-excitation method, resolution-enhancement compression (REC), increases the axial resolution and the echo signal-to-noise ratio (eSNR) for an ultrasonic imaging system. The REC technique was examined for its ability to improve lesion detectability. The REC technique was used to double the -3-dB fractional pulse-echo bandwidth of an ultrasonic source ...

A case of minimal deviation adenocarcinoma of the cervix in a 34-year-old female is presented. The ultrasonographic and three-dimensional power Doppler color studies revealed a nodular cervical lesion with vascularization more prominent in the center of the nodule but also present at the periphery. The imaging diagnosis was suggestive of ...

BACKGROUND: In order to elucidate criteria for distinguishing benign from malignant lesions, this study correlated the ductoscopy-based macroscopic description of intraductal lesions with histopathologic results. MATERIALS AND METHODS: Aiming to use diagnostic criteria consistent with previous publications, we analyzed the literature and established a uniform set of diagnostic descriptors. Based ...

Objective. To evaluate whether pattern III of color Doppler Ultra-sound may identify malignant nodules. Materials and Methods. We have retrospectively analyzed data pertaining to 1090 patients of both genders (230 males, 860 females), with an average age of 53 years (min 17 years, max 81 years), who underwent thyroidectomy in ...

BACKGROUND: There are a wide variety of fractional resurfacing devices that are available and it is important to understand the tissue effect of different devices at different parameters to ensure a well-controlled treatment. Thus, we have chosen to characterize and compare two different fractional laser devices, the Fraxel SR750 and ...

BACKGROUND: Calcified coronary lesions have commonly been considered as a challenge for interventional cardiologists, and few previous studies of sirolimus-eluting stent (SES) for calcified lesion have been limited by small sample size. Therefore, we evaluated the effectiveness of SES implantation for the treatment of calcified lesions in a large Chinese ...

Identification of Gad-enhancing lesions is of great interest in Multiple Sclerosis (MS) disease since they are associated with disease activity. Current techniques for detecting Gad-enhancing lesions use a contrast agent (Gadolinium) which is administered intravenously to highlight Gad-enhancing lesions. However, the contrast agent not only highlights these lesions, but also ...

PURPOSE: To evaluate whether proton MR spectroscopy (MRS) at 3 T with metabolite quantification is helpful for characterizing musculoskeletal lesions and to reveal whether the concentration of choline is correlated with the pathologic degree of malignancy. MATERIAL AND METHODS: Three-tesla MR images and proton MRS data from 27 consecutive patients ...

PURPOSE: The aim of the study was to investigate the ability of contrast-enhanced sonography (CEUS) with the contrast agent SonoVue to differentiate between benign and malignant focal liver lesions. METHODS: In a prospective study, we examined 317 patients (204 males, 113 females, aged 59 +/- 12 years) with focal liver ...

BACKGROUND AND PURPOSE: Currently, there is no reliable method of monitoring the propagation of radiofrequency lesions in real time. We report our animal experience using contrast-enhanced ultrasonography (CEUS) to evaluate the lesion produced by radiofrequency ablation (RFA) in a canine model and investigate the feasibility to predict these lesions. MATERIALS ...

PURPOSE: To evaluate therapeutic efficacy of ultrasound (US)-guided high-intensity focused ultrasound (HIFU) ablation for treatment of needle-track seeding of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Nine patients with needle-track seeding of HCC were treated as outpatients using US-guided HIFU ablation. The mean size of the lesion was 1.8 cm (range ...

PURPOSE: To evaluate the temporal lobes in patients previously treated for nasopharyngeal carcinoma to provide a better understanding of delayed radiation-induced injury in the brain unaffected by the underlying tumor. MATERIALS AND METHODS: Retrospective analysis of the patient data was approved by the local ethics committee. Informed consent was waived. ...

To compare software-based quantification of contrast-enhanced ultrasound (CEUS) examinations of focal liver lesions in the arterial and late phases with the enhancement patterns established by the sonologist. The study cohort comprised 12 malignant and 21 benign hepatic lesions in 33 patients (18 female and 15 male; aged 57 +/- 13 ...

INTRODUCTION: Fractional flow reserve (FFR) is a method to determine the significance of a lesion. Although an FFR measurement of < 0.75 is accepted to show ischaemia, the effect of the location of the lesion on the coronary artery is not known. This study investigates the effect of lesion location ...

OBJECTIVE: To determine whether intravenous contrast ultrasound examination is superior to gray-scale or power Doppler ultrasound for discrimination between benign and malignant adnexal masses with complex ultrasound morphology. METHODS: In an international multicenter study, 134 patients with an ovarian mass with solid components or a multilocular cyst with more than ...

OBJECTIVE: This study was performed to assess the sensitivity and specificity for malignant and benign mass lesions of a diagnostic approach combining DWI with T2-weighted images (unenhanced MR mammography, ueMRM) and compare the results with contrast-enhanced MR mammography (ceMRM). MATERIALS AND METHODS: Consecutive patients undergoing histopathological verification of mass lesions ...

PURPOSE: The role of diffusion-weighted MR imaging (DWI) in the differential diagnosis of pulmonary malignant tumours and solid benign lesions was investigated. METHODS: Sixty-two patients with 66 lesions underwent conventional MRI and DWI (diffusion factor of 0 and 500 s/mm(2)) examinations with 1.5-T MRI. The signal intensity of DWI images ...

A quantitative systematic review was performed to estimate the accuracy ultrasonography with color Doppler in the diagnosis of ovarian tumors. Studies that compared color Doppler ultrasonography with paraffin-embedded sections parameters for the diagnosis of ovarian tumors were included. Twelve studies were analyzed, which included 2398 women. The pooled sensitivity was ...

OBJECTIVE: The aim of this study was to evaluate diagnostic parameters to differentiate between benign versus malignant ovarian masses using contrast-enhanced transvaginal sonography (TVS). METHODS: Thirty-three consecutive patients with 36 morphologically abnormal ovarian masses (solid or cystic with papillary excrescences, focally thickened walls, or irregular solid areas) smaller than 10 ...

Reversible focal lesions in the splenium of the corpus callosum (SCC) or reversible splenial lesion syndrome are rare and little is known about their pathophysiology. The authors describe a case of a 65-year-old female who presented with fever, abnormal behaviour and mild hypernatremia. She was on neuropsychiatric treatment for bipolar ...

Using computed tomography, the volume, location, and number of osteolytic lesions were determined adjacent to 38 Harris-Galante 1 (HG-1) acetabular components fixed with screws and 19 porous-coated anatomic (PCA) acetabular components press-fitted without screws. The median implantation times were 16 and 15 years, respectively. The mean total lesion volumes were ...

BACKGROUND: Intravascular ultrasound radiofrequency analysis (IVUS-RF) characterizes plaque components as necrotic core (NC) and dense calcium (DC). The aim of this study was to perform an IVUS-RF derived analysis of the lesion segment profile in acute coronary syndrome (ACS) patients. Therefore, we compared the site of the minimum lumen area--cross ...

The aim of the study was (1) to evaluate contrast enhancement patterns of subchondral cysts on magnetic resonance imaging and (2) to discuss possible radiological explanations of cyst enhancement based on existing theories of subchondral cyst formation in osteoarthritis. The Multicenter Osteoarthritis Study (MOST) is a NIH-funded longitudinal observational study ...

OBJECTIVE: Creation of transmural myocardial lesions with epicardial surgical devices to treat atrial fibrillation is difficult. A new cooled bipolar radiofrequency ablation probe was used to create transmural myocardial lesions under controlled conditions. METHODS: The Coolrail (AtriCure, Inc, West Chester, Ohio) is a handheld probe with 2 parallel 30-mm long ...

RATIONALE AND OBJECTIVES: Flat lesions in the colon may result in false-negative computed tomography colonography interpretations. It is unknown whether flat lesions are better measured on two-dimensional (2D) or three-dimensional (3D) images and which settings are optimal for enhanced reproducibility and decreased variability. We evaluated these factors to determine whether ...

OBJECTIVE: Computer-aided evaluation (CAE) programs for breast MRI provide automated lesion kinetic information. The CAE kinetic parameters that best predict malignancy have not been established. We compared three CAE kinetic features of suspicious breast MRI lesions to determine associations with benign or malignant outcomes. MATERIALS AND METHODS: From 1,532 MRI ...

The aim of this study was to evaluate the imaging features of hepatic angiomyolipoma (AML) on contrast-enhanced ultrasound (CEUS). The imaging features of 12 pathologically proven hepatic AML lesions in 10 patients who had undergone baseline ultrasound (BUS) and CEUS examinations were evaluated retrospectively. The enhancement extent, pattern and dynamic ...

OBJECTIVE: The purpose of this study was to evaluate the prognostic value of 10-MHz sonography in measuring melanoma thickness before biopsy or excision. SUBJECTS AND METHODS: Fifty-four patients with lesions suggestive of melanoma participated in the study. Lesions were measured on sonography using a 10-MHz linear transducer before routine biopsy ...

OBJECTIVE: The purpose of our study was to evaluate whether sonographic characterization of focal splenic lesions could be improved by using low mechanical index pulse-inversion sonography after sulfur hexafluoride-filled microbubble injection. MATERIALS AND METHODS: One hundred forty-seven splenic lesions (68 benign, 79 malignant) in 147 patients (81 men, 66 women; ...

The aim of this pilot study was the evaluation of CT perfusion patterns in metastatic GIST lesions under specific molecular therapy with sunitinib or imatinib both in responders and non-responders. 24 patients with metastatic GIST under tyrosine kinase inhibition were retrospectively evaluated. A total of 46 perfusion and venous phase ...

The value of contrast-enhanced ultrasound (CEUS) in differential diagnosis between benign and malignant gallbladder diseases was investigated. Thirty-three patients with gallbladder carcinomas and 47 with benign gallbladder diseases underwent CEUS. The lesion enhancement time, enhancement extent, pattern, dynamic change of enhancement and the intactness of gallbladder wall were evaluated. In ...

AIMS: Drug eluting stents (DES) have been used routinely in a wide variety of clinical situations. The impact of DES on reducing restenosis has not been uniform across complex subsets and limited data is available examining predictors of restenosis in unselected population. METHODS AND RESULTS: We investigated predictors of angiographic ...

BACKGROUND: The efficacy of transcatheter cryoablation for ventricular tachycardia (VT) remains controversial because of the limited size of the lesion produced. An increased lesion size if the cryoablation catheter profile and catheter tip length were increased was hypothesized. METHODS AND RESULTS: Closed-chest transcatheter cryoablation was applied with 7F, 6-mm tip ...

Color Doppler USG of the scrotum has been demonstrated to be useful in the diagnosis of scrotal lesions. Gray-scale USG characterizes the lesions as testicular or extratesticular and, with color Doppler and power Doppler, flow and perfusion can also be assessed. Color Doppler is particularly helpful in acute painful conditions, ...

BACKGROUND: Irrigated radiofrequency (RF) ablation catheters may produce different lesion sizes dependent upon the electrode orientation to the tissue. This study examined the effect of irrigated electrode orientation on the lesion size and explores a potential mechanism for this effect. METHODS AND RESULTS: Lesions were created in isolated porcine myocardium ...

OBJECTIVE: To evaluate the significance of contrast-enhanced ultrasound (CEUS) examination in differential diagnosis of malignant and benign breast lesions. METHODS: Seventy-one patients with seventy-six breast tumors are selected randomly. CEUS examinations were performed before and after bolus injection of the contrast agent SonoVue (Bracco, Milan, Italy). Specific sonographic quantification software, ...

BACKGROUND: This study was performed to evaluate the usefulness of high-resolution grayscale and color Doppler ultrasound to distinguish benign from malignant soft-tissue masses on the basis of ultrasonographic patterns. METHODS: We enrolled 398 female and 420 male patients aged 1-104 years (mean, 49.8 years). All presented with a palpable nodule ...

The purpose of this presentation is to show the sonographic morphologic characteristics of plantar warts and the scope of sonography in the treatment of these lesions. We retrospectively reviewed 27 sonographic examinations of the plantar region; 17 corresponded to plantar warts diagnosed by dermatologists in which the diagnoses were medically ...

Chorioangioma, the non trophoblastic tumour, constitutes the commonest benign growth of the placenta. Though benign, 30% rate of maternal or foetal complications are associated with large masses. Sonography including colour Doppler imaging provides the best modality not only for its diagnosis but also the foetal status. A case of large ...

INTRODUCTION: The aim of this study is to characterize ablation lesions using varying ratios of bipolar:unipolar energy and to show the feasibility of a circular decapolar pulmonary vein ablation catheter (PVAC) to create transmural lesions in an in vivo porcine superior vena cava (SVC) model. METHODS AND RESULTS: Ablations were ...

AIMS: The histopathological diagnosis of infection in periprosthetic tissue from loose total joint endoprosthesis has been the subject of controversy. The aim was to define a histological criterion that would best differentiate between aseptic and septic endoprosthesis loosening. METHODS AND RESULTS: Neutrophilic granulocytes (NG) were enumerated histopathologically in 147 periprosthetic ...

To compare the enhancement pattern of hilar cholangiocarcinoma on contrast-enhanced ultrasound (CEUS) with that on contrast-enhanced computed tomography (CECT). Thirty-two consecutive patients with pathologically proven hilar cholangiocarcinomas were evaluated by both low mechanical index CEUS and CECT. The enhancement feature of the tumor, portal vein infiltration, and lesion conspicuity on ...

We assessed the role of contrast-enhanced ultrasound (CEUS) in the differential diagnosis between benign and malignant portal vein thrombosis (PVT) in patients who had liver tumors. Seventeen consecutive patients who had cirrhosis, liver tumors, and PVT were prospectively studied with CEUS. CEUS was performed at low mechanical index after intravenous ...

AIM: To clarify which method has accuracy: 2nd generation contrast-enhanced ultrasound or biopsy of portal vein thrombus in the differential diagnosis of portal vein thrombosis. METHODS: One hundred and eighty-six patients with hepatocellular carcinoma and portal vein thrombosis underwent in blinded fashion a 2nd generation contrast-enhanced ultrasound and biopsy of ...

Though diffusion weighted imaging (DWI) is frequently used for identifying the ischemic lesion in focal cerebral ischemia, the understanding of spatiotemporal evolution patterns observed with different analysis methods remains imprecise. DWI and calculated apparent diffusion coefficient (ADC) maps were serially obtained in rat stroke models (MCAO): permanent, 90 min, and ...

Dynamic contrast-enhanced magnetic resonance imaging is a clinical imaging modality for the detection and diagnosis of breast lesions. Analytic methods were compared for diagnostic feature selection and the performance of lesion classification to differentiate between malignant and benign lesions in patients. The study included 43 malignant and 28 benign histologically ...

We report the sonographic findings in a case of lymphoma, which mimicked chronic inflammation. Scrotal gray-scale sonography revealed an irregularly margined, hypoechoic mass in the right testis and epididymis. Color Doppler sonography showed increased blood flow within the hypoechoic lesions in both testis and epididymis. Pathologic examination revealed a diffuse ...

OBJECTIVE: To determine the supplemental MRI value in characterization of small hepatic lesions (< or = 20 mm) indetermined by routine CT scan. MATERIAL AND METHOD: This was a retrospective study. Sixty-four patients with 81 indeterminate small hepatic lesions on the CT scan were included in this study. Two radiologists ...

Ablation catheters with multiple electrodes are effective for the creation of linear atrial lesions but are associated with an increased risk of coagulum formation. In an animal study, we used a novel 9Fr deflectable ablation catheter with two saline/foam electrode pocket covered with 20 mm tubing. Each pocket contained six ...