Computed tomography (CT) is not generally advocated as the first-line imaging examination for disorders of the female pelvis. However, multidetector CT is often the modality of choice for evaluating nongynecologic pelvic abnormalities, particularly in emergent settings, in which all the pelvic organs are invariably assessed. Incidental findings of uterine and ...

Paragangliomas, also described as ectopic pheochromocytomas are infrequent neuroectodermal neoplasms that could be found wherever paraganglionic tissue exists. We present a rare case of a manifold non-functional primary hepatic paraganglioma in a 71 years old female. The combination of structural computed tomography and magnetic resonance imaging and of a functional ...

: This study was designed to review the emerging role of fluorine 18 fluorodeoxyglucose (F-FDG)-positron emission tomography (PET) CT/computed tomography (PET/CT) in patients with mycobacteriosis. : A comprehensive literature search of published studies through October 2010 in PubMed/MEDLINE database regarding F-FDG-PET and PET/CT in patients with mycobacteriosis was performed. : ...

In previous studies, we presented main strategies for suspending the rotor of a mixed-flow type (centrifugal and axial) ventricular assist device (VAD), originally presented by the Institute Dante Pazzanese of Cardiology (IDPC), Brazil. Magnetic suspension is achieved by the use of a magnetic bearing architecture in which the active control ...

Although the diagnostic value of magnetic resonance imaging (MRI) in multiple sclerosis (MS) is widely accepted, the clinical usefulness of routine MRI for monitoring the evolution of patients with MS is less widely accepted. It is not uncommon for clinicians to say that they treat the patient, not the MRI. ...

The biceps pulley or "sling" is a capsuloligamentous complex that acts to stabilize the long head of the biceps tendon in the bicipital groove. The pulley complex is composed of the superior glenohumeral ligament, the coracohumeral ligament, and the distal attachment of the subscapularis tendon, and is located within the ...

This is a rare case of a 68-year-old woman who was rehospitalized after uneventful redo double-valve surgery. An 8.3 × 12.9 × 16.4 cm tense right chest wall hematoma was diagnosed. This was precipitated by a single cough. Contrast-enhanced computed tomography revealed a bleeding source. Hematoma evacuation and hemostasis following ...

PURPOSE: The purpose of this study was to evaluate the course of the anteromedial bundle (AMB) and the posterolateral bundle (PLB) of the anterior cruciate ligament (ACL) with magnetic resonance imaging (MRI) in order to clarify the relationship between the bundles and surrounding anatomic landmarks. METHODS: Eighty-eight knees with intact ...

Concerning its magnetic properties, the layered vanadate CsV_{2}O_{5} has long been considered as formed by isolated spin-1/2 dimers characterized by a large antiferromagnetic coupling of about 146 K. This interpretation was supported by both magnetic susceptibility measurements and the obvious presence of magnetically active strongly dimerized V^{4+} ions. In this work ...

This report describes the findings of ultrasonographic examination of the abomasum in 30 goats. A 5.0MHz linear transducer was used to scan the left and right paramedian regions, the linea alba and the right abdominal wall of standing goats. The abomasum appeared as a heterogeneous, moderately echogenic structure with echogenic ...

Nuclear singlet states may have lifetimes that are much longer than the conventional relaxation time of nuclear spin magnetization. This review covers how these states may be generated, observed, and exploited in solution nuclear magnetic resonance (NMR). Potential applications include the study of slow molecular processes, the elucidation of molecular ...

The evaluation of inflammatory activity in Crohn's disease (CD), a crucial aspect of treatment planning and monitoring, is currently based on a sum of clinical data and imaging findings. Among the contrast enhanced cross-sectional imaging techniques (CE-US, CE-CT, CE-MR), CE-US is less invasive, more comfortable for the patient, and has ...

Recently, magnetic resonance imaging has emerged as a valuable tool in evaluation of small bowel Crohn's disease. MRI provides several advantages to other imaging modalities, including the lack of ionizing radiation, multiplanar capability, and functional information. Intravenous contrast administration is a routine portion of MR enterography protocol, and aids in ...

Identifying the position, course, and caliber of the dominant perforator is extremely valuable in the preoperative study for perforator surgery. Besides reliability, the ideal technique should offer low cost and high availability and reproducibility. It should be fast, easy to interpret, and free of morbidity. Multidetector-row computed tomography (MDTC) and ...

Abstract Conclusions: The combined analysis of axial, coronal, and sagittal planes can increase the positive rate of diagnosis for dehiscence of the facial nerve canal. Objective: The aim of this study was to evaluate the diagnostic value of high resolution computed tomography (HRCT) scanning of the condition of the tympanic ...

Cavernous haemangioma is a very rare vascular malformation of the uterus. We describe the CT and MRI findings of a cavernous haemangioma in an 81-year-old female with recurrent menorrhagia. CT showed a well-marginated mass with multifocal calcifications and extensive haemorrhage, as well as necrosis in the anterior wall of the ...

To report an unusual case of neurobrucellosis. A 48-year-old man was admitted to Rafik Hariri University Hospital (RHUH) for progressive gait disturbances, hearing loss, and some episodes of chills without documented fever. The neurological examination showed gait ataxia, tremor in the legs and mild cognitive decline. The physical exam was ...

We present the pattern of metabolic brain abnormalities detected in patients undergoing whole body (WB) F-18 flurodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) examination for non-central nervous system (CNS) malignancies. Knowledge of the PET/CT appearance of various intracranial metabolic abnormalities enables correct interpretation of PET scans in oncological patients where ...

Using a technology that "takes a look" at people's insides and promises early warnings of cancer, cardiac disease, and other abnormalities, clinics and medical imaging facilities nationwide are touting a new service for health conscious people: "Whole body CT screening" this typically involves scanning the body from the chin to ...

It is important to consider several differential diagnoses in a patient presenting with altered sensorium following surgery. Fat embolism syndrome (FES) is a serious condition that needs to be excluded. Although criteria for diagnosis of FES are available, all patients may not satisfy them. We discuss a patient who presented ...

COPD is a heterogeneous disease characterized by airflow obstruction and diagnosed by lung function. CT imaging is emerging as an important, noninvasive tool in phenotyping COPD. However, the use of CT imaging in defining the disease heterogeneity above lung function is not fully known. Seventy-five patients with COPD (58 men, ...

AIMS: We assessed the hypothesis that global and regional left atrial (LA) function is altered in patients with chronic primary mitral regurgitation (MR) secondary to myxomatous mitral valve disease (MMVD). METHODS AND RESULTS: Velocity vector imaging of the LA was acquired from apical four- and two-chamber views in 41 normal ...

Abdominal wall endometriosis is unusual and mostly occurs in scars following Cesarean section. Although malignant transformation is rare, it must be recognized in order to benefit from radical resection. We report a very rare case of mixed endometrioid and serous carcinoma developing in a Cesarean section endometriosis scar and the ...

Chondromyxoid fibroma (CMF) is a rare benign bone tumor of chondroid origin that occurs mostly in the metaphyses of long bones. CMF can occasionally mimic a chondrosarcoma on CT, and the literature on the 18F-FDG PET/CT imaging characteristics of CMF tumors is limited. In the presented case, a large histologically ...

Pectus excavatum, the most common congenital deformity of the anterior chest wall, is both a cosmetic and functional abnormality. The degree of abnormal chest wall deformity determines its functional effect, particularly its cardiac and pulmonary impact. Although CT scanning is the most widely used cross-sectional imaging technique used to measure ...

The reversal processes of magnetization in epitaxial MnAs nanotubes prepared by an overgrowth on the sidewall of GaAs nanowires having a diameter of 26 nm are investigated. While the magnetic hard axis is aligned in the direction of the nanowire axis, we apply an external magnetic field perpendicular to the axis ...

Disturbance in the synapse has been suggested in the pathology of schizophrenia, especially through examination of autopsied brains from patients with the disease. Nonetheless, it has been unclear whether and how such disturbance is associated with the onset and progression of the disease in young adulthood. Some studies with magnetic ...

Magnetic resonance urography (MRU) is a powerful clinical tool that fuses anatomic information with functional data in a single test without the use of ionizing radiation. This article provides an overview of the technical aspects, as well as common clinical applications with an emphasis on the evaluation of hydronephrosis. A ...

Although histologic examination following stereotactic or surgical brain biopsy is required for definitive antemortem diagnosis of intracranial neoplasms, these tumors are often associated with magnetic resonance (MR) imaging features that warrant a presumptive or prioritized differential diagnosis. The MR imaging features of common canine central nervous system (CNS), adenohypophyseal, and ...

This study compared the diagnostic efficacy of magnetic resonance imaging (MRI) and computed tomography arthrography (CTA) in the assessment of capsular tears at the undersurface of the extensor carpi radials brevis tendon in chronic tennis elbow using arthroscopy as a gold standard. Because of the higher spatial resolution of CT, ...

We performed a prospective study to evaluate the reliability of using triggered electromyography (EMG) for predicting pedicle wall breakthrough during the placement of pedicle screw in adolescent idiopathic scoliosis surgery. We wanted to correlate pedicle wall breakthrough with the triggered EMG threshold of stimulation and the postoperative computed tomography (CT) ...

Empyema necessitatis is a process defined and characterized by the transpleural spread of an infected pleural collection into the adjacent chest wall. Symptoms may be referable to the associated pleural and consolidative infection, but sometimes are associated with chest wall involvement. To our knowledge, the magnetic resonance imaging findings of ...

BACKGROUND: In the absence of official guidance for the management of colonic wall thickening identified by computed tomography (CT), a common clinical dilemma surrounds the volume of colonoscopies subsequently performed. METHODS: To identify whether colonic wall thickening identified at CT consistently warrants colonoscopy, consecutive colonoscopies performed at Leeds Teaching Hospitals ...

At sufficiently high Larmor frequencies, traveling electromagnetic waves along a magnet bore can be used for remote magnetic resonance excitation and detection, effectively using the bore as a waveguide. So far, this approach has relied only on the lowest waveguide modes and thus has not supported multiple-channel operation for radiofrequency ...

To compare high-resolution (HR) CT and histopathological findings and to evaluate serial CT findings in pulmonary Langerhans cell histiocytosis (PLCH). We reviewed CT of lung lesions in 27 adults (M:F = 20:7, mean age, 41 ± 12.3 years) with PLCH. After evaluating lung abnormalities including nodules, micronodules, thick-walled, thin-walled, and bizarre-shaped cysts and reticulation, ...

PURPOSE: The primary aim of this prospective study was to evaluate the relationship between three-dimensional dynamic contrast-enhanced magnetic resonance (3D-DCE-MR) imaging parameters and clinicopathological features of rectal cancer and assess their potential as new radiological prognostic predictors. MATERIALS AND METHODS: Three-dimensional DCE-MR was performed on 26 cases of pathologically proved ...

Magnetic resonance imaging (MRI) has been gaining popularity over standard imaging modalities like ultrasound and CT because of its ability to provide excellent soft-tissue contrast. However, due to the working principle of MRI, a number of conventional force sensors are not compatible. One popular solution is to develop a fiber-optic ...

To solve the problem of the basal descent movement in quantification of the regional left ventricular (LV) myocardial wall thickness (WTh) and wall thickening (%WT) in short-axis (SA) cine MRI for effectively assessing the regional wall motion of LV myocardium. LV long-axis tagged MRI and SA cine MRI were performed ...

The purpose of the present study was to evaluate the detectability and dimensions of periapical lesions, the relationship of the mandibular canal to the roots of the respective teeth, and the dimension of the buccal bone by using limited cone-beam computed tomography (CBCT) in comparison to conventional periapical (PA) radiographs ...

Gastrointestinal functional disorders are common symptoms. The evaluation of underlying colonic motility dysfunction is difficult due to lacking adequate examination techniques. Recently cine-magnetic resonance imaging (MRI) was introduced as imaging technique for visualizing colon motility. However, the correlation of MR-visible colonic-movements and real intraluminal movements was not demonstrated yet. Therefore, ...

ABSTRACT: Fetal developmental anomalies consist of central nervous system malformations, brain injury, and tumors. Overlap is often seen especially between malformation and injury because malformation may be genetically determined or related to external causative agent, whereas brain injury may be, on one hand, caused by malformation as with intracranial vascular ...

ABSTRACT: Brain function is tightly linked to the development of the cortex. Until recently, assessing the human cortical development and folding was not possible in vivo. It is magnetic resonance imaging and new post-processing image analysis tools that have improved the understanding of cortical development. The combination of conventional magnetic ...

OBJECTIVE: To assess the reliability of CT airway measurement using phantom and to evaluate its reproducibility using clinical chest CT images. MATERIALS AND METHODS: The phantom consisted of six tubes with different diameters and wall thicknesses was used. The wall area ratio (%WA) and wall thickness ratio (%WT) were calculated ...

OBJECTIVE: Carotid intima-media thickness is a well established non-invasive surrogate marker of cardiovascular disease, however there is evidence that structural modification of the arterial adventitia also accompanies cardiovascular risk factors and might be involved causally in atherosclerosis. We sought to determine the relative contributions of the intima-media and adventitia to ...

Radiotherapy planning now uses advanced technologies to accurately image and assess the extent of disease for treatment. PET scanning has become established as perhaps the most important imaging study for patients with Hodgkin's disease. With respect to initial staging, FDG-PET is more sensitive overall than CT scanning. PET can detect ...

Beside behavioral assessment of patients with disorders of consciousness, neuroimaging modalities may offer objective paraclinical markers important for diagnosis and prognosis. They provide information on the structural location and extent of brain lesions (e.g., morphometric MRI and diffusion tensor imaging (DTI-MRI) assessing structural connectivity) but also their functional impact (e.g., ...

Hyperpolarized noble gases ((3)He and (129)Xe) can provide NMR signal enhancements of 10,000 to 100,000 times that of thermally polarized gases and have shown great potential for applications in lung magnetic resonance imaging (MRI) by greatly enhancing the sensitivity and contrast. These gases obtain a highly polarized state by employing ...

The development of nanoscale molecular probes capable of diagnosis, characterization, and clinical treatment of disease is leading to a new generation of imaging technologies. Such probes are particularly relevant to inflammation, where the detection of subclinical, early disease states could facilitate speedier detection that could yield enhanced, tailored therapies. Nanoparticles ...

Adult neurogenesis, i.e., the generation of new neurons in the adult brain, presents an enormous potential for regenerative therapies of the central nervous system. While 5-bromo-2'-deoxyuridine labeling and subsequent histology or immunohistochemistry for cell-type-specific markers is still the gold standard in studies of neurogenesis, novel techniques, and tools for in ...

Nuclear medicine techniques were the first functional imaging techniques used to support the clinical diagnosis of Alzheimer's Disease (AD). Perfusion-SPECT allows registration of regional cerebral blood flow (rCBF) which is altered in a characteristic temporal-parietal pattern in AD. Numerous studies have shown the diagnostic value of reduced CBF and metabolic ...