Subject(s)
Arthritis , Osteonecrosis , Male , Humans , Subcutaneous Fat/diagnostic imaging , Osteonecrosis/diagnostic imaging , NecrosisSubject(s)
Aortic Aneurysm , Aortic Rupture , Aortic Valve Insufficiency , Heart Septal Defects, Ventricular , Sinus of Valsalva , Humans , Sinus of Valsalva/diagnostic imaging , Sinus of Valsalva/surgery , Aortic Valve Insufficiency/diagnostic imaging , Aortic Valve Insufficiency/etiology , Aortic Valve Insufficiency/surgery , Aortic Aneurysm/complications , Aortic Aneurysm/diagnostic imaging , Aortic Aneurysm/surgeryABSTRACT
Sepsis is a clinical syndrome caused by a dysregulated host response to infection that can lead to multiple organ dysfunction and death. Cardiovascular abnormalities are frequent in sepsis and may result in myocardial injury unrelated to coronary artery disease. Myocardial calcification is a rare complication of sepsis, which shows rapid-onset extensive myocardial calcifications. We present a case of a 67-year-old man who developed severe sepsis complicated with shock, acute renal failure, and acute respiratory distress syndrome. Initial chest computed tomography (CT) on admission showed normal left ventricular (LV) myocardial attenuation. However, serial chest CT demonstrated a gradual increase of the LV myocardial attenuation, which ultimately resulted in extensive myocardial calcification within 6 weeks. Sepsis-related myocardial calcification is usually found in patients with severe sepsis complicated with hemodynamic failure requiring vasopressors, acute renal failure necessitating renal replacement therapy, and acute respiratory distress syndrome. Although the prognostic significance of this pathology is unclear, it may be a precursor to long-term irreversible cardiomyopathy or an arrhythmogenic substrate that induces life-threatening arrhythmias. Therefore, patients who have survived the acute phase of severe sepsis need to be monitored carefully for signs of this complication by an imaging modality such as CT.
Subject(s)
Arterio-Arterial Fistula/diagnosis , Coronary Aneurysm/diagnosis , Coronary Vessels/diagnostic imaging , Multimodal Imaging/methods , Pulmonary Artery/abnormalities , Aged , Arterio-Arterial Fistula/complications , Computed Tomography Angiography , Coronary Aneurysm/complications , Echocardiography , Female , Humans , Pulmonary Artery/diagnostic imagingSubject(s)
Angiography, Digital Subtraction/methods , Computed Tomography Angiography/methods , Coronary Angiography/methods , Coronary Restenosis/diagnosis , Coronary Vessels/diagnostic imaging , Percutaneous Coronary Intervention/adverse effects , Stents/adverse effects , Aged , Coronary Artery Disease/diagnosis , Coronary Artery Disease/surgery , Coronary Vessels/surgery , Humans , Male , Predictive Value of Tests , Prosthesis FailureABSTRACT
Left ventricular (LV) involvement in the advanced stage of arrhythmogenic right ventricular cardiomyopathy (ARVC) is a well recognized phenomenon. T wave inversion in the lateral leads has been reported to be an electrocardiographic marker of LV involvement. Variants of ARVC that preferentially affect the left ventricle (left-dominant subtype of arrhythmogenic cardiomyopathy) have recently been recognized. We herein report a case in which an initial electrocardiogram that was similar to the left-dominant subtype of arrhythmogenic cardiomyopathy progressed to definitive ARVC over a period of 7 years. This case supports the hypothesis that LV involvement in ARVC may precede the evident onset of significant RV dysfunction.
Subject(s)
Arrhythmogenic Right Ventricular Dysplasia/physiopathology , Ventricular Dysfunction, Left/physiopathology , Arrhythmias, Cardiac/physiopathology , Arrhythmogenic Right Ventricular Dysplasia/diagnosis , Cardiomyopathies/physiopathology , Disease Progression , Electrocardiography/methods , Follow-Up Studies , Heart Conduction System/physiopathology , Heart Ventricles/physiopathology , Humans , Male , Middle Aged , Ventricular Dysfunction, Left/diagnosisSubject(s)
Gastroepiploic Artery/abnormalities , Gastroepiploic Artery/diagnostic imaging , Mesenteric Artery, Superior/abnormalities , Mesenteric Artery, Superior/diagnostic imaging , Tomography, X-Ray Computed , Aged , Celiac Artery/abnormalities , Celiac Artery/diagnostic imaging , Coronary Artery Bypass , Humans , MaleABSTRACT
The advantage of the higher signal-to-noise ratio (SNR) of 3-Tesla magnetic resonance imaging (3-Tesla) has the possibility of contributing to the improvement of high spatial resolution without causing image deterioration. In this study, we compared SNR and the apparent diffusion coefficient (ADC) value with 3-Tesla as the condition in the diffusion-weighted image (DWI) parameter of the 1.5-Tesla magnetic resonance imaging (1.5-Tesla) and we examined the high spatial resolution images in the imaging method [respiratory-triggering (RT) method and breath free (BF) method] and artifact (motion and zebra) in the upper abdominal region of DWI at 3-Tesla. We have optimized scan parameters based on phantom and in vivo study. As a result, 3-Tesla was able to obtain about 1.5 times SNR in comparison with the 1.5-Tesla, ADC value had few differences. Moreover, the RT method was effective in correcting the influence of respiratory movement in comparison with the BF method, and image improvement by the effective acquisition of SNR and reduction of the artifact were provided. Thus, DWI of upper abdominal region was a useful sequence for the high spatial resolution in 3-Tesla.