Diagnosis of Peritoneal Metastases with Abdominal Malignancies: Role of ADC Measurement on Diffusion Weighted MRI.

Objective: The purpose of our study was to evaluate the utility of the apparent diffusion coefficient (ADC) value measurement in the diagnosis of peritoneal metastases on diffusion weighted magnetic resonance imaging.

Materials And Methods: Diffusion weighted imaging with conventional magnetic resonance imaging sequences was performed on twenty consecutive oncology patients (group I) with peritoneal metastases. The ADC values of the metastases, the peritoneal fat around the metastases (group I) and the peritoneal fat in patients with no malignancy (group II) at b(0-100), b(0-600), and (b 0-1000) s/mm(2) gradients were measured and compared.

Semiquantitative strain elastography of liver masses.

Objectives: This study was designed to determine the utility of semiquantitative strain elastography in differential diagnosis of solid liver masses.

Methods: A total of 103 patients with focal liver masses underwent abdominal sonographic examinations and freehand elastography of focal hepatic lesions. Eighty-two patients (79.

Role of the apparent diffusion coefficient in the differential diagnosis of gastric wall thickening.

Purpose: To evaluate the role of the apparent diffusion coefficient (ADC) measurement made using diffusion-weighted magnetic resonance imaging (DWMRI) in the differential diagnosis of benign and malignant gastric wall thickening.

Materials And Methods: Axial T2-weighted and DWMRI at b 600 and b 1000 s/mm(2) gradients were performed in 94 patients (44 patients with gastric malignancy and 50 patients with benign gastric diseases) with gastric wall thickening which was detected by multidetector computed tomography (MDCT). The ADC values of the gastric lesions and healthy gastric walls in patients with gastric malignancies and in patients with benign gastric diseases were used in the differential diagnosis of benign and malignant lesions of the stomach.

Diffusion-weighted MRI of fatty liver.

Purpose: To investigate the effect of fat infiltration on the apparent diffusion coefficient (ADC) of liver, and assess the relationship between ADC and hepatic fat fraction (HFF).

Materials And Methods: MRI scans of 120 consecutive patients were included in this retrospective study. Of these, 42 patients were included in the fatty liver group and 78 in the control group.

Diffusion-weighted MR imaging of thyroid nodules.

Introduction: The purpose of our study was to determine the diagnostic role of diffusion-weighted imaging (DWI) in the differentiating of malignant and benign thyroid nodules by using fine needle aspiration biopsy cytology criteria as a reference standard. The apparent diffusion coefficient (ADC) values of the normal-looking thyroid parenchyma were also evaluated both in normal patients and in patients with nodules.

Methods: Between March 2007 and February 2008, 76 consecutive patients with ultrasound-diagnosed thyroid nodules and 20 healthy subjects underwent diffusion-weighted MR imaging by using single-shot spin echo, echo planar imaging.

Age-related metabolic changes in the corpus callosum: assessment with MR spectroscopy.

Purpose: The aim of this study was to examine metabolite changes in different parts of the corpus callosum (CC), and to relate these changes to different age groups using magnetic resonance spectroscopy (MRS).

Materials And Methods: A total of 76 healthy subjects participated in the study with MRS analyses (39 females and 37 males). Subjects were grouped by age into four groups, in increasing order: Groups 1, 2, 3, and 4.

Evaluation of the effects of sildenafil citrate (viagra) on vertebral artery blood flow in patients with vertebro-basilar insufficiency.

Objective: To investigate the effects of sildenafil citrate (Viagra) on the vertebral artery blood flow of patients with vertebro-basilar insufficiency (VBI) using color duplex sonography (CDS).

Materials And Methods: The study included 21 patients with VBI (aged 31-76; mean 61.0 +/- 10.

Isolated congenital absence of the pericardium.

Absence of the pericardium can vary from partial to complete absence. Patients with complete absence of the pericardium are either asymptomatic or have nonspecific chest pain, and no treatment is needed. Patients with partial absence of the pericardium are at risk for possible symptomatic herniation of the left atrial appendage or left ventricle, leading to fatal myocardial strangulation.

Hippocampal 1H MRS in patients with bipolar disorder taking valproate versus valproate plus quetiapine.

Background: No study to date has examined the effects of mood stabilizer alone and the combination of mood stabilizer and atypical antipsychotic, quetiapine, on hippocampal neurochemical markers of bipolar disordered patients concurrently. We therefore undertook a proton magnetic resonance spectroscopy (1H MRS) study of drug-free patients with bipolar disorder (drug-free group), patients undergoing valproate treatment (valproate group), patients administered valproate+quetiapine (valprote+quetiapine group) and healthy controls, focusing on the in vivo neuroanatomy of the hippocampus.

Method: Thirty patients from the Firat University School of Medicine Department of Psychiatry and 10 healthy controls gave written informed consent to participate in the study.

Effects of overweight on luminal diameter, flow velocity and intima-media thickness of carotid arteries.

Purpose: To the best of our knowledge, there are only a few previous studies on the effects of overweight on extracranial carotid arteries. We aimed to investigate the effects of overweight on flow velocities, luminal diameters and intima media thicknesses (IMTs) of the common and internal carotid arteries (CCA, ICA).

Materials And Methods: A prospective study on color duplex sonography of the extracranial arteries was performed in 71 adults, ages between 25-58 years old.

Cingulate gyrus volumetry in drug free bipolar patients and patients treated with valproate or valproate and quetiapine.

In patients with bipolar disorder, recent brain imaging studies have reported cingulate cortex volume change. We performed a volumetric magnetic resonance imaging (MRI) study to assess the subregions of the cingulate gyrus; left anterior cingulate (LAC), left posterior cingulate (LPC), right anterior cingulate (RAC), and right posterior cingulate (RPC). Our sample consisted of bipolar patients that are either unmedicated (n=10), on valproate monotherapy (n=10) or on valproate plus quetiapine (n=10) versus healthy comparisons (n=10).

Hippocampal 1H MRS in first-episode bipolar I patients.

Based on earlier structural and functional neuroimaging studies, we specifically wanted to assess N-acetylaspartate (NAA), choline-containing compounds (CHO), and creatine+phosphocreatine (CRE) levels in brain hippocampus previously demonstrated to be involved in the pathophysiology of bipolar disorder which have not been evaluated in first-episode patients. Twelve patients meeting DSM-IV criteria for bipolar disorder who consecutively applied to our department and 12 healthy controls were studied. The patients and controls underwent proton magnetic resonance spectroscopy ((1)H MRS), and measures of NAA, CHO, and CRE in hippocampal regions were obtained.

Sonographic evaluation of plantar fasciitis and relation to body mass index.

Purpose: We have investigated the role of sonography in the diagnosis of plantar fasciitis.

Materials And Methods: This study evaluates 39 patients with plantar fasciitis and control group of 22 healthy volunteers. The plantar fascia thickness was measured 5 mm distal to the insertion of the calcaneus of plantar aponeurosis.

Measuring resistance index in patients with BPH and lower urinary tract symptoms.

Purpose: To assess the correlation between resistance index (RI) measured in different zones of the prostate and other more commonly used parameters of benign prostatic hyperplasia (BPH).

Methods: Twenty-six male patients who underwent a detailed evaluation for lower urinary tract symptoms suggestive of BPH were examined with transrectal (TRUS) color Doppler sonography (CDS). The correlation between RI in various prostate zones, and various urinary flow rates, and the International Prostate Symptom Score (IPSS), and prostatic volume measured by TRUS was determined.

Effects of sildenafil on major arterial blood flow using duplex sonography.

Purpose: Erectile dysfunction (ED) is the persistent inability to achieve or maintain an erection sufficient for satisfactory sexual performance. Oral use of sildenafil citrate is effective in the treatment of ED. Although the effects of sildenafil citrate have been investigated in several systems, its effect on aortic, superior mesenteric (SMA), and carotid artery blood flow is still unclear.

Classification of the frequency of carotid artery stenosis with MLP and RBF neural networks in patients with coroner artery disease.

For the classification of left and right Internal Carotid Arteries (ICA) stenosis, Doppler signals have been received from the patients with coroner arteries stenosis by using 6.2-8.4 MHz linear transducer.

Classification of MCA stenosis in diabetes by MLP and RBF neural network.

For the classification of Middle Cerebral Artery (MCA) stenosis, Doppler signals have been received from the diabetes and control group by using 2 MHz Transcranial Doppler. After the Fast Fourier Transform (FFT) analyses of the Doppler signals, Power Spectrum Density (PSD) estimations have been made and Multilayer Perceptron (MLP) and Radial Basis Function (RBF) have been dealt to apply to the neural networks. PSD estimations of Doppler signals received from MCA of 104 subjects have been successfully classified by MLP (correct classification = 94.

[Uterine arteriovenous malformation: US, color Doppler US and MRI findings (case report)].

Uterine arteriovenous malformations are rare but life threatening lesions. Sixty nine-year old, multiparous, postmenopausal patient complained of intermittent vaginal hemorrhage for 4 years. Serum beta-HCG level of the patient who had no history of uterine curettage or pelvic operation was normal.

[Biochemical and immunological effects of ionizing radiation in radiology staff members].

Purpose: This study aimed to investigate the influence of occupational exposures to long term low-dose ionizing radiation on blood biochemistry and immunity levels of the radiology staff.

Materials And Methods: Fifty-one subjects, aged between 21-57 years (30.06+/-7.

[Pictorial essay: Pneumocephalus].

Imaging in pneumocephalus aids in the diagnosis and management of this condition, which usually results from trauma, iatrogenic causes, infections, tumors, and cranium abnormalities. The role of computed tomography and magnetic resonance imaging is especially addressed in this article.

Lung findings on high resolution CT in early ankylosing spondylitis.

Objective: Ankylosing spondylitis (AS) is a chronic inflammatory disease mainly affecting the axial skeleton and pulmonary involvement is a well known feature of the disease. The aim of this study was to investigate the pulmonary high resolution computed tomography (HRCT) findings of patients with early AS. The relationship between pulmonary function tests (PFT) and HRCT findings was also determined.

Incidence and importance of reflux in testicular veins of healthy men evaluated with color duplex sonography.

Purpose: Reflux in the testicular veins plays a crucial role in the diagnosis of a varicocele. The aim of this study was to evaluate the incidence and the sonographic features-duration and velocity-of reflux in testicular veins of healthy men using color duplex sonography (CDS).

Methods: Healthy male volunteers, 18-45 years old, whose physical examinations and semen analyses were normal, were recruited for this study.