Assessment of material identification and quantification in the presence of metals using spectral photon counting CT.

Spectral Photon Counting Computed Tomography (SPCCT), a ground-breaking development in CT technology, has immense potential to address the persistent problem of metal artefacts in CT images. This study aims to evaluate the potential of Mars photon-counting CT technology in reducing metal artefacts. It focuses on identifying and quantifying clinically significant materials in the presence of metal objects.

A Tangled Autoimmune Trio: Multiple Sclerosis, Systemic Lupus Erythematosus and Antineutrophil Cytoplasmic Antineutrophil Cytoplasmic Antibody Vasculitis.

The coexistence of multiple autoimmune diseases in the same individual is unusual and has received little attention in the literature. We present a young female patient with multiple sclerosis, systemic lupus erythematosus, and biopsy-proven renal proteinase 3 antineutrophil cytoplasmic antibodyassociated vasculitis who responded well to intravenous rituximab clinically and serologically.

Comprehensive description of the prevalence, serological and clinical characteristics, and visceral involvement of systemic sclerosis (scleroderma) in a large cohort from the United Arab Emirates Systemic Sclerosis Registry.

Systemic sclerosis is an autoimmune condition characterized by a wide range of clinical presentations. Registries may serve to expand understanding about systemic sclerosis and aid in patient care and follow-up. The objective of this study was to analyze the prevalence of systemic sclerosis in a large cohort from the United Arab Emirates Systemic Sclerosis Registry and find the significant similarities and differences between the different subsets.

Lower back pain as a manifestation of acute gouty sacroiliitis: Utilization of dual-energy computed tomography (DECT) in establishing a diagnosis.

Gout is the most common inflammatory arthritis which initially presents as a monoarthritis that usually favours peripheral joints namely the 1st MTP. It was reported in the literature to rarely involve the axial joint, such as the sacroiliac joint, and often mimics seronegative spondyloarthritis (SpA). Gout is a male disease and after menopause the risk in females is equal to males.

Hereditary Angioedema Type II: First Presentation in Adulthood with Recurrent Severe Abdominal Pain.

A 27-year-old Emirate man presented to Cleveland Clinic Abu Dhabi emergency department with a 4 year history of recurrent episodes of severe swellings affecting different parts of his body. He used to get 2 swelling episodes every week affecting either his face, hands, feet or scrotum and severe abdominal pain twice a week. Abdominal CT scan and a colonoscopy showed bowel wall oedema.

Multicentric giant cell tumor of the fourth and fifth metacarpals with lung metastases.

Giant cell tumors of bone (GCTB) are generally benign neoplasms, but recently, some authors consider them to be low-grade malignant neoplasms because they have a relatively high rate of recurrence and at least some potential for metastases. The majority of GCTB are unifocal, and less than 1 % are multicentric. We report a rare case of a multicentric GCTB arising simultaneously in the non-dominant fourth and fifth metacarpals of a 25-year-old female.

Cutaneous metastatic lung cancer detected with 18F-FDG PET.

A 48-year-old male smoker presented with a chief complaint of persistent cough for three months. A CT scan revealed only a large right paratracheal mass. The plan was to obtain histological confirmation of suspected lung cancer via bronchoscopy and mediastinoscopy.

Multimodality diagnostic imaging of diffuse esophageal leiomyomatosis.

A case of diffuse esophageal leiomyomatosis is presented, with emphasis on the imaging findings across multiple contemporary diagnostic modalities. This entity represents a rare presentation of uncommon benign smooth muscle tumors of the esophagus. The characteristic clinical, histologic, and multimodality imaging findings may distinguish this benign tumor from its malignant counterpart leiomyosarcoma and from achalasia.

Usefulness of electron beam computed tomography for diagnosis of an anomalous origin of a coronary artery from the opposite sinus.

The ectopic origination of a coronary artery from the opposite sinus is a rare condition, often discovered as an incidental finding during invasive catheter angiography performed for the evaluation of atherosclerotic coronary artery disease. Although most patients lack hemodynamic significance, a small fraction of these anomalies have been associated with sudden cardiac death and ischemic complications. The exact anatomic definition of the anomalous coronary artery and its course, especially in relation to the ascending aorta and the pulmonary trunk, is therefore crucial for every imaging modality that attempts coronary artery visualization.

Congenital coronary anomalies in adults: comparison of anatomic course visualization by catheter angiography and electron beam CT.

The objective of this study was to compare the anatomic course of anomalous coronary arteries by axial and three-dimensional volume-rendered electron beam computed tomography (EBCT) angiography and X-ray catheter angiography (CAG). We performed a blinded study where patients who previously underwent CAG with (n = 14) and without (n = 14; age- and gender-matched controls) anomalous coronary anatomy were studied with EBCT coronary angiography. Forty to 50 EKG-triggered 3 mm overlapping axial slices were acquired with 2 mm table movement within one breath hold during the i.

Atherosclerosis and vascular calcification are independent predictors of left ventricular hypertrophy in chronic haemodialysis patients.

Background: Accelerated atherosclerosis and vascular calcification are common in chronic haemodialysis (HD) patients. In this study, we aimed to investigate the relationship between left ventricular hypertrophy (LVH) in HD patients and atherosclerosis and vascular calcification measured by electron beam computed tomography (EBCT).

Methods: In a cohort of 118 HD patients (52 male, 66 female, mean age: 46+/-13 years), we measured biochemical parameters, including BUN, creatinine, albumin, haemoglobin, C-reactive protein and fibrinogen levels, and performed echocardiography, high-resolution B-mode carotid ultrasonography and EBCT in 85 of them.

Three-dimensional noninvasive contrast-enhanced electron beam tomography angiography of the kidneys: adjunctive use in medical and surgical management.

Objective: To indicate the use of 3D electron beam computerized tomography angiography (EBCTA) for renal artery lesions, vascular variants that are crucial to detect before surgery, especially partial nephrectomy and extension of the intravascular tumor.

Methods: Forty patients (30 men, 10 women, age range 13-82, mean age 54.2) underwent EBCT (GE-Imatron, C 150 ultrafast CT scanner) of the renal arteries.