ABSTRACT
The infrared transmission spectra of YH(3-delta) and YD(3-delta) thin films have been measured in the energy range from 300 to 6000 cm(-1), and the optical constants have been calculated by Kramers-Kronig analysis. From a fit of the frequency-dependent conductivity and the dielectric loss functions with one Drude term and five Lorentz oscillators, the longitudinal and transverse optical-phonon frequencies have been determined. The Born and Szigeti effective charges have been calculated and the ionicities of the ions in YH(3-delta) have been derived. We find that hydrogen does not enter as a proton in the compound, but that it is negatively charged, with a Szigeti effective charge of nearly 0.5e.
ABSTRACT
We report about a patient with a solitary tibial metastasis of a prostatic carcinoma. Metastases to the peripheral skeleton are relatively rare with a frequency of only 1-2% and are mainly found in cases of general spread of the disease. Complaints due to peripheral solitary metastases often cause misinterpretations. Bone scintigraphy is the primary method in the diagnosis of skeletal metastases, and is sometimes supported by specific radiographs. MRI yields excellent images of the extension of the tumor. It is therefore of high diagnostic value in the preoperative definition of the metastatic spread in bone and neighbouring soft tissue structures.
Subject(s)
Bone Neoplasms/secondary , Diagnostic Imaging , Prostatic Neoplasms/diagnosis , Tibia , Aged , Biomarkers, Tumor/blood , Bone Neoplasms/diagnosis , Humans , Male , Prostate-Specific Antigen/bloodSubject(s)
Amyloidosis/diagnostic imaging , Cardiomyopathy, Restrictive/diagnostic imaging , Echocardiography, Doppler , Echocardiography , Hemodynamics/physiology , Aged , Amyloidosis/drug therapy , Amyloidosis/pathology , Biopsy , Captopril/administration & dosage , Cardiomyopathy, Restrictive/drug therapy , Cardiomyopathy, Restrictive/pathology , Diagnosis, Differential , Digitoxin/administration & dosage , Drug Therapy, Combination , Female , Furosemide/administration & dosage , Heart Failure/diagnostic imaging , Heart Failure/drug therapy , Heart Failure/pathology , Hemodynamics/drug effects , Humans , Intestinal Mucosa/pathology , Myocardium/pathology , Rectum/pathologyABSTRACT
A 66 year old patient with chest pain and exertional dyspnea is described. Auscultation and physical examination showed signs of aortic stenosis combined with aortic insufficiency. Electrocardiography revealed left ventricular hypertrophy with associated ST-segment and T-wave abnormalities. Color blood flow imaging confirmed severe combined aortic stenosis and regurgitation, the hemodynamic evaluation demonstrated the indication for aortic valve replacement.
Subject(s)
Aortic Valve Insufficiency/complications , Aortic Valve Stenosis/complications , Chest Pain/etiology , Dyspnea/etiology , Aged , Aortic Valve Insufficiency/diagnosis , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/surgery , Diagnosis, Differential , Dizziness/etiology , Heart Valve Prosthesis , Humans , MaleABSTRACT
This 52-year old female patient suffered from exertional dyspnea, fatigue and palpitations progressive for some months. She had rheumatic fever in childhood. Physical examination and echocardiography revealed severe pure mitral regurgitation, invasive studies showed dilatation of the left atrium and ventricle, a regurgitant volume of 70% of the stroke volume and mitral valve replacement was performed.