OBJECTIVE: To determine whether there is iron overload by calculating the T2* value in the liver and myocardium in patients with secondary haemochromatosis. To analyse the correlation of the values obtained with the iron levels in blood, with the liver iron concentration (LIC) calculated using magnetic resonance (MR) imaging, and ...

The role of Interim-PET in DLBCL is controversial. To determine predictive value of Interim-PET on PFS we enrolled 88 first-line DLBCL patients treated with 6-8 R-CHOP regardless of Interim-PET results. PET/CT were performed at diagnosis, after 2-4 courses and at the end of therapy with central reviewing according to visual ...

OBJECTIVES: Literature reports that surveillance imaging following endovascular aortic aneurysm repair (EVAR) gives rise to asymptomatic secondary interventions (SI) in 1.4-9% of cases. This retrospective study aimed to evaluate whether the modality of surveillance imaging influences the detection rate of asymptomatic SI. MATERIALS AND METHODS: Two EVAR surveillance protocols were ...

Purpose:To report and analyse factors influencing topographical and interocular variations of choroidal thickness (CT) in healthy adult population.Methods:100 eyes of 50 healthy subjects underwent visual acuity and axial length measurements and optical coherence tomography with enhanced depth imaging using the Heidelberg Spectralis HRA+OCT. CT at the fovea, and 3 mm ...

BACKGROUND: Magnetic resonance imaging (MRI) of the bowel is a valuable diagnostic tool for assessing disease activity in patients with inflammatory bowel disease (IBD). We compared magnetic resonance enterography (MRE) with and without water enema to conventional ileocolonoscopy to evaluate the advantage of a water enema for MRI diagnostics of ...

BACKGROUND: The thymus changes with age. Its shape and the proportion of solid tissue and fat vary between individuals, yet there is no comprehensive work describing the size and morphology of the normal thymus on CT. As a result, many adults with some preserved soft tissue in the thymus may ...

PURPOSE: We evaluated the rate of successful characterization of gastroenteropancreatic neuroendocrine tumors (NETs) present with an increased somatostatin receptor, comparing CE-CT with CE-MRI, each in correlation with DOTATOC-PET. METHODS AND MATERIALS: 8 patients with GEP-NET were imaged using CE-MRI (Gd-EOB-DTPA), CE-CT (Imeron 400) and DOTATOC-PET. Contrast-enhancement of normal liver-tissue and ...

PURPOSE: To evaluate the reliability of attenuation values in virtual non-contrast images (VNC) reconstructed from contrast-enhanced, dual-energy scans performed on a second-generation dual-energy CT scanner, compared to single-energy, non-contrast images (TNC). MATERIALS AND METHODS: Sixteen phantoms containing a mixture of contrast agent and water at different attenuations (0-1400HU) were investigated ...

We report on a 4-year-old boy with transient reduced diffusion in the cortex, thalamus, and hippocampus on diffusion-weighted imaging (DWI) performed after prolonged febrile seizures (PFS). He had experienced intermittent right hemiconvulsions lasting about 90min during the febrile illness, but his neurological symptom resolved completely after several hours. DWI performed ...

PURPOSE: This study evaluated transition-point morphology for defining the nature of bowel obstructions. MATERIALS AND METHODS: Computed tomography (CT) examinations of 95 patients affected by severe bowel obstruction (23 neoplastic, 72 nonneoplastic) were retrospectively reviewed. RESULTS: The transition point was identified in 89 patients (94%); morphology in relation to the ...

OBJECTIVE: The aims of this review are to describe the main characteristics for the CT diagnosis of isolated caecal ischaemia (ICA) and give details of the differential diagnosis with other conditions with a similar clinical picture. MATERIAL AND METHODS: A retrospective study was conducted to review the CT findings of ...

A 16-year-old boy presented with growth retardation and iron deficiency anemia. The disease was identified incidentally in the pararenal retroperitoneum after computed tomography and magnetic resonance imaging scans. A retroperitoneal lesion was removed in its entirety and was histologically confirmed to be a symptom of Castleman's disease of the unicentric ...

ABSTRACT: INTRODUCTION: Inflammatory involvement of the anterior chest wall (ACW) impacts the quality of life in patients with spondyloarthritis (SpA) although involvement of the ACW is often neglected on clinical and imaging evaluation. Whole body (WB) MRI is an imaging method to assess the ACW in addition to the sacroiliac ...

Summary Aim of this study was to introduce a feasible and valid technique for the assessment of masticatory performance that is comparable to the standard sieving method. Twenty-one chewing samples (Optosil) comminuted by healthy dentate adults were analysed with a sieving and scanning method. Scanning was performed using a conventional ...

BACKGROUND: Real-time tissue elastography (RTE), acoustic radiation force impulse (ARFI) imaging, and transient elastography (TE) are new technologies that are used for liver stiffness evaluation. The aim of this study was to compare these methods in the same population and to determine their diagnostic accuracy in the prediction of liver ...

PURPOSE: To retrospectively evaluate and compare (18)F-FDG, (18)F-DOPA and (68)Ga-somatostatin analogues for PET/CT in patients with residual/recurrent medullary thyroid carcinoma (MTC) suspected on the basis of elevated serum calcitonin levels. METHODS: Included in the study were 18 patients with recurrent MTC in whom functional imaging with the three tracers was ...

The aim was to clarify whether enhancement effects of the liver parenchyma in the hepatobiliary phase (HP) of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced MR imaging were correlated with the morphological grading of the severity in cirrhosis. A total of 62 patients with chronic hepatitis or cirrhosis underwent Gd-EOB-DTPA-enhanced MR imaging. Relative ...

Purpose:  Type II focal cortical dysplasia (TTFCD), a highly epileptogenic lesion with severe epilepsy curable by surgery, is missed by magnetic resonance imaging (MRI) in about one third of cases. Little is known about the electroclinical presentation in these MRI-negative patients and a poor surgical outcome is frequently reported. We ...

Univariate analyses have identified gray matter (GM) alterations in different groups of MS patients. While these methods detect differences on the basis of the single voxel or cluster, multivariate methods like support vector machines (SVM) identify the complex neuroanatomical patterns of GM differences. Using multivariate linear SVM analysis and leave-one-out ...

The purpose of this study was to retrospectively evaluate radiologist performance in detection of lacunar infarcts on T(1)- and T(2)-weighted images, without and with the use of a computer-aided diagnosis (CAD) scheme. Thirty T(1)-weighted and 30 T(2)-weighted MR images obtained from 30 patients were used for assessing observer performance. These ...

OBJECTIVE:To assess the sensitivity and specificity of 3D double inversion recovery (DIR) MRI for detecting multiple sclerosis (MS) cortical lesions (CLs) using a direct postmortem MRI to histopathology comparison. METHODS:Single-slab 3D DIR and 3D fluid-attenuated inversion recovery (FLAIR) images of 56 matched fresh brain samples from 14 patients with chronic ...

ABSTRACT: INTRODUCTION: Magnetic resonance imaging (MRI) and computed tomography (CT) with 68Ga-DOTATOC positron emission tomography (68Ga-DOTATOC-PET) were compared retrospectively for their ability to delineate infracranial extension of skull base (SB) meningiomas treated with fractionated stereotactic radiotherapy. METHODS: Fifty patients with 56 meningiomas of the SB underwent MRI, CT, and 68Ga-DOTATOC ...

OBJECTIVE: The T2' imaging has been shown to be sensitive to oxygen saturation changes in normal appearing white and grey matter (NAWM, NAGM) in patients with relapsing-remitting multiple sclerosis (RRMS). We aimed to explore the presence and extent of T2' changes in patients with a clinically isolated syndrome (CIS) and ...

Objective: The aim of the study is to evaluate the potential role of fluorodeoxyglucose (FDG)-positron emission tomography (PET)/CT in the detection of bone/bone marrow disease in patients with Hodgkin's Lymphoma (HL).Methods: We retrospectively reviewedfluorine-18 ((18)F)-FDG-PET/CT scans of 122 newly diagnosed, biopsy proven cases of HL performed between November 2009 and ...

Objectives: To investigate the effect of reconstruction slice thickness on image quality at CT virtual cystoscopy (VC).Methods: Pelvic CT examinations in bladder cancer patients were reconstructed at different slice thicknesses (0.6 mm-5 mm) and intervals, and resulting VC images assessed. Quality indicators were ridging, holes, floaters and dimpling artefacts, tumour definition, and ...

PURPOSE: To evaluate interobserver agreement in regard to measurements of focal ground-glass opacities (GGO) diameters on computed tomography (CT) images to identify increases in the size of GGOs. MATERIALS AND METHODS: Approval by the institutional review board and informed consent by the patients were obtained. Ten GGOs (mean size, 10.4 ...

AIM: To examine whether early findings of the brain CT evaluated by the modified Alberta stroke programme early CT (m-ASPECT) score is useful for determining the prognosis of post-cardiac arrest syndrome (PCAS) patients or not. Materials: From 2003 through 2010, 149 consecutive PCAS patients 1) with various etiologies but neither ...

OBJECTIVE: To correlate clinical features with histopathology findings in advanced intraocular retinoblastoma and to determine the diagnostic accuracy of magnetic resonance imaging (MRI) in detecting tumor invasion. DESIGN: Prospective, nonrandomized case series. PARTICIPANTS: We included 75 patients with group E retinoblastoma. METHODS: Demographic and clinical features were recorded at presentation. ...

INTRODUCTION: The term focal cortical dysplasia (FCD) describes a very particularly pathology of a migration disorder which involves a symptomatology mainly characterised by drug-resistant epileptic seizures, some particular neuroradiological images and histological characteristics, as well as a very positive response to surgical treatment in the majority of cases. MATERIAL AND ...

This study verified that recently developed real-time virtual sonography (RVS) to coordinate a sonography image and the magnetic resonance imaging (MRI) multiplanar reconstruction (MPR) with magnetic navigation was useful. The purpose of this study was to evaluate the accuracy of RVS to sonographically identify enhancing lesions by breast MRI. Between ...

RATIONALE AND OBJECTIVES: From dynamic contrast-enhanced magnetic resonance imaging, it is known that microcirculation patterns in multiple myeloma differ depending on the infiltration pattern. The purpose of this study was to evaluate histogram analysis of dynamic contrast-enhanced magnetic resonance imaging in MM to monitor early treatment response on the basis ...

: The prevalence of bone involvement in sarcoidosis has been estimated to be 3% to 5%, mostly affecting the phalanges. The aim of this study was to assess the prevalence and distribution pattern of bone and bone marrow involvement as detected by positron emission tomography/computed tomography (PET/CT) in sarcoidosis patients. ...

A 79-year-old man with diffuse large B-cell lymphoma was presented for assessment of metabolic response to chemotherapy. The baseline F-18 FDG PET showed extensive nodal, soft tissue, and bone metastases, which have completely resolved on the subsequent follow-up study, except for persistent perianal FDG activity. The perianal FDG activity was ...

Protein-losing gastropathy (PLG) is a rare cause of hypoalbuminemia and may be missed in patients with peritoneal dialysis (PD), because PD therapy can lead to hypoalbuminemia and conceal the occurrence of edema. We report a 58-year-old man who underwent PD and presented with unexplained hypoalbuminemia, but lacked gastrointestinal symptoms and ...

Introduction: This study tested the hypothesis that S100β is a useful screening tool for detecting intracranial lesion (IL) in patients with a normal level of consciousness after traumatic brain injury (TBI). Methods: One hundred and forty-three post-TBI patients without a decrease in consciousness (GCS = 15) and with at least one neurological ...

To analyze characters of magnetic resonance spectroscopy (MRS) and diffusion tensor imaging (DTI) in the diagnosis of mild trauma brain injuries (MTBI) in frontal lobe and to compare with conventional magnetic resonance imaging (MRI). A total of 21 patients were selected, who all aged 12-51 years old and had injury ...

Reversible posterior leukoencephalopathy syndrome (RPLS) is characterized by clinical symptoms such as seizures, visual disturbance, and altered mental status. It also presents abnormal findings on computed tomography (CT) and magnetic resonance imaging (MRI) indicating cerebral edema in the white matter of the occipital, temporal, and parietal lobes. Both the clinical ...

Introduction: Pulmonary embolism (PE) is a serious condition with mortality estimates of up to 10%. We sought to investigate the diagnosis of PE, time to access imaging and diagnostic utility of each modality in a rural emergency department (Ed). Methods: We completed a retrospective chart review to determine the investigations ...

The purpose of our study was to evaluate the accuracy of virtual unenhanced images reconstructed from contrast-enhanced dual-energy CT for the differentiation of incidental adrenal masses in comparison with standard unenhanced CT. One hundred-forty patients (mean age, 74 ± 9 years) underwent unenhanced and contrast-enhanced CT of the abdomen, the ...

The aim of this study was to work out the special features of subarachnoid hemorrhage (SAH) of unknown origin in respect of diagnostic evaluation, clinical course, and outcome in a large cohort of patients. We reviewed the data of 179 patients with SAH of unknown origin during 1991 and 2008. ...

Bilateral striatal necrosis is usually associated with either endogenous or exogenous toxins, and with poor neurodevelopmental outcomes. We describe two patients with acute bilateral striatal clinical syndrome and magnetic resonance signal changes who made a complete clinical and radiologic recovery within 3 months. After an uneventful pregnancy, normal birth, and ...

The aim of this study was to determine evolution of T1 unenhanced hypointense lesions (acute or chronic black holes (ABHs, CBHs)) by measuring their magnetization transfer ratio (MTR) changes over 12 months. 40 glatiramer acetate (GA)-naive patients with relapsing-remitting MS who presented with 1 or more contrast-enhancing lesions (CELs) at ...

To evaluate whether ultrasonography was inferior in detecting the size of a renal mass preoperatively because of the increased attention on the harmful effects of ionizing radiation in medical imaging. A prospectively maintained database was reviewed of all patients who underwent renal ultrasonography before definitive therapy for the renal mass. ...

The authors report a rare case of multiple intracranial fetuses in fetu, fulfilling Willis' traditional criteria, which include an axial and appendicular skeleton with surrounding organized tissue. This case was ascertained from studies of a full-term female neonate who presented with ventriculomegaly. A CT scan showed intracranial calcifications that were ...

The chain reaction pile-up on the multilane highway ("Autobahn") A 19 in April 2011 was regarded as the most severe traffic accident within the last 20 years in Germany. The situation worsened when 34 of the 83 involved vehicles caught fire. As a result of this crash, 8 high-grade heat-damaged victims ...

A variety of radiological methods of measuring version of the acetabular component after total hip replacement (THR) have been described. The aim of this study was to evaluate the reliability and validity of six methods (those of Lewinnek; Widmer; Hassan et al; Ackland, Bourne and Uhthoff; Liaw et al; and ...

The aim of this study was to compare two screening methods, total score of the Cognitive Abilities Screening Instrument (CASI(T)) and the combined score for the short-term memory and orientation domains (CASI(R)) for screening and grading probable Alzheimer's disease (AD), based on their correlations with voxel-based morphometry (VBM). Forty-five subjects ...

To study changes in brain volume measured monthly in patients treated for relapsing multiple sclerosis due to loss of tissue and the appearance of inflammation. Design and Patients  The results from T2/fluid-attenuated inversion recovery axial images from 13 consecutive monthly 3-T brain magnetic resonance imaging tests conducted on 74 patients ...

To describe 4 children with a novel hypomyelinating leukoencephalopathy, defined by a distinct pattern of magnetic resonance imaging (MRI) abnormalities. In our ongoing study on leukoencephalopathies of unknown origin, MRIs of patients are rated in a standardized manner. Patients are grouped according to their MRI abnormalities. The clinical and laboratory ...

In the AAPM Report 80,(1) the imaging modality of 4D CT and respiration-correlated CT was declared a "promising solution for obtaining high-quality CT data in the presence of respiratory motion". To gather anatomically correct data over time, the existence of correlation between the internal organ movement and an external surrogate ...