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Biomedical subjects

M Galanski

Publications and source records attributed to M Galanski.

At least 163 records · Page 9Linked to original sources
PubMed1981

[X-Ray diagnosis of pneumothorax in intensive care units (author's transl)].

Pneumothorax is the most severe manifestation of pulmonary barotrauma which occurs in mechanical ventilation. Diagnosis of pneumothorax in intensive care radiology is of particular difficulty. Chest radiographs in supine position show a variety of signs which may be helpful but are not conclusive. There are different techniques for verification of ventrally located pneumothorax. 45 degrees tangential radiographs of the hemithorax in question are most conclusive for demonstration of extrapulmonary air located inside the pleural cavity. This 45 degrees technique ist easy to carry out without changing the patients position.

Barotrauma↗
PubMed1980

Lateralization procedures in primary aldosteronism.

The diagnostic validity of adrenal isotopic scanning, adrenal venous aldosterone, adrenal phlebography and computed abdominal tomography (CT) was studied in 44 patients with primary aldosteronism. In all patients the diagnosis was confirmed by surgery (unilateral adrenal adenoma n = 32, bilateral adrenal hyperplasia n = 12). Both adrenal scintiscan, adrenal venous aldosterone and CT allowed in a comparable high percentage of patients (71%0 the exact classification of the adrenal lesion(s), whereas adrenal phlebography could distinguish adenoma from hyperplasia in 57%. Marked differences between the lateralization procedures, however, were observed in predicting incorrect preoperative indentification: adrenal scintiscan 29%, adrenal venous aldosterone 3%, adrenal veno-graphy 6% and CT 0%. Finally, the percentage of patients in whom no differentiation between the two main subgroups of primary aldosteronism could be obtain varied between 0% with adrenal isotopic scanning and 37% with adrenal phlebography (CT 29% and adrenal venous aldosterone 26%). Both scintiscan and adrenal venous aldosterone were not improved by the administration of dexamethasone. Our findings document that adrenal venous aldosterone determinations, adrenal isotopic scanning and computed tomography are equally valid in differentiating unilateral adenoma from bilateral adrenal hyperplasia in primary aldosteronism. However, adrenal scintiscan is hampered by a relative high percentage of incorrect results independant whether dexamethasone was used or not. Contrary, adrenal venous aldosterone and computed tomography seemed to have no or only a minor risk in assuming an incorrect classification of the adrenal lesion(s).

Adenoma↗
PubMed1980

[The use of contrast media in computer tomography (author's transl)].

There are a variety of applications for contrast media in CT. They can be used for better anatomic demonstration or for showing pathological processes. Nearly all available contrast media may be found useful. Intravenously injected renographic contrast media are most commonly employed. In addition to their inherent contrast, specific pharmaco-kinetic changes may be of diagnostic value. This adds some knowledge of function to the purely morphological information obtained by computer tomography. For this purpose, contrast has to be injected rapidly and a fast scanner must be used (so-called angio-CT).

Contrast Media↗
PubMed1980

[Computer tomographic localisation in primary aldosteronism. Comparison with adrenal scintigraphy (author's transl)].

13 patients with verified primary aldosteronism (unilateral adrenal adenoma = 10, bilateral idiopathic hyperplasia = 3) underwent examination by CT and 131J-cholesterol-scintigraphy. CT-scan can successfully employed for localization of unilateral adenoma exceeding 10 mm in diameter. Small lesions and hyperplasia are rare CT-findings. The value of 131J-cholesterol-scintigraphy for differentiation of the two main subgroups of primary aldosteronism--adenoma and hyperplasia--is limited. In our experience both non-invasive methods are helpful to avoid misleading interpretation. In controversial cases bilateral adrenal venous blood sampling by catheterization is mandatory.

Adenoma↗
PubMed1979

[New aspects of conventional tomography with special reference to automatic exposure control].

Automatic exposure control in tomography requires control of dose output whereas in survey technique dose is controlled. Automatic exposure not only facilitates work load but also improves image quality by balancing regions of differing density. High control-frequency and -sensibility are essential requirements; otherwise unsatisfactory findings i.e. erraneous images may result in particular when the time for a tomographic cycle is short. These high requirements exceed the performance margin of conventional automatic exposure control systems in which dose control is achieved by control of tube heat. A combined tube-current- and voltage-control with regard to primary voltage phase as used in units designed lately serves all routine use needs and delivers high quality tomograms.

Automation↗
PubMed1979

[Carotid body and glomus vagale tumours (author's transl)].

Twentyfour chemodectomas (non-chromaffin paragangliomas) of the neck seen in 20 patients are presented. The investigation including angiography and the surgery in respect to risk factors and preoperative assessment is discussed. The long term results are also presented. Special note is made of the familial incidence since two twin brothers who had bilateral tumours are included.

Adolescent↗
PubMed1978

Neurological complications and myelographic features of achondroplasia.

The neurological complications of achondroplasia are discussed based on the literature and two of our cases. Thoracolumbar kyphosis, hypertrophic osteoarthritis, and intervertebral disc herniations may cause early neurological disturbances to adult achondroplasts owing to the spinal stenosis. The symptoms range from nerve root compression syndromes to complete transverse myelopathy. The radiographic features are characteristic, but the value of myelography for etiological clarification and location of the pathological process is limited. The significance of early symptoms and signs must be stressed and early decompression performed, as results are very disappointing once extensive neurological damage has occurred. An extensive laminectomy is usually indicated.

Achondroplasia↗
PubMed1978

[Angiographic findings in 86 confirmed tumours of the posterior cranial fossa (author's transl)].

The accuracy of vertebral angiography in the diagnosis of tumours was reviewed on the basis 368 selective angiograms. The greatest accuracy was achieved with space-occupying lesions situated centrally in the cerebellum in the region of the fourth ventricle or in the vermis. However, tumours growing eccentrically, but arising in this region, were occasionally missed. Least reliable is the angiographic diagnosis of tumours is the cerebellar hemispheres. Of these, only about two-thirds could be demonstrated. Only 60% of cerebello-pontine tumours were diagnosed from displacement of various structures, another 10% by the presence of pathological vessels or tumour staining. The classic angiographic picture of pontine tumours is rare. Brain stem tumours are frequently eccentric and may simulate cerebello-pontine angle tumours. The demonstration or exclusion of brain stem involvement can be difficult. In view of the implications for treatment, this should, however, always be attempted.

Adolescent↗
PubMed1978

[Radiological findings in Larsen's syndrome (author's transl)].

The clinical and radiological findings of Larsen's syndrome are illustrated by one case and the differential diagnosis is discussed. The condition is characterised by multiple congenital subluxations, particularly of the knees; there is a characteristic facial appearance and deformities of the fingers and feet, as well as a number of less constant features. The literature is shown in a table.

Abnormalities, Multiple↗
PubMed1978

[Plain film findings in the skull in neurofibromatosis (author's transl)].

The radiologically demonstrable changes in the skull, which occur in neurofibromatosis, are described. The mesodermal dysplastic changes in the sphenoid and the facial skeleton are diagnostic. Changes secondary to blastomatous processes are not always a consequence of the presence of a tumour; they may result from developmental abnormalities or dural protrusion. In addition one may encounter a series of changes which are not in themselves diagnostic. Problems in the diagnoses and the differential diagnosis are discussed.

Child↗
PubMed1978

[Intestinal tuberculosis and differential diagnosis against Crohn's disease in children (author's transl)].

The case of a 9-year-old girl treated elsewhere for anemia due to iron deficit is described. The first diagnosis of Crohn's disease made by us and for which the girl received treatment had to be revised, because an intestinal tuberculosis was later accepted to be the correct diagnosis. The authors emphasize the importance of safe diagnostic distinctions between Crohn's disease and intestinal tuberculosis. Diagnostic and therapeutic procedures are discussed.

Anemia, Hypochromic↗
PubMed1978

[Plain roentgenography findings of congenital heart disease (author's transl)].

Plain roentgenography of congenital heart disease in newborn is subject to narrow diagnostic limitations. The cardiac abnormalities should preferably be classified according to haemodynamic criteria. In most cases the diagnostic information is restricted to the statement whether the malformation detected plain roentgenography is associated with normal, increased or decreased pulmonary perfusion. Most cardiac abnormalities occur in conjunction with a more or less pronounced cardiomegaly, and only the tetralogy of Fallot, tricuspid atresia, and total anomalous pulmonary venous drainage are associated with a heart of normal or only slightly enlarged size. Configurations which are considered as being typical of congenital heart disease are only seen in the tetralogy of Fallot and in tricuspid atresia (wooden shoe deformity) on the one hand, and in the transposition of the great arteries and the truncus arteriosus on the other eggshaped heart). Differentiation between these malformations of the heart is sometimes possible via the position of the aortic arch. The factors mainly responsible for the development of cardiac insufficiency during the first few days of life should be the coarctation of the aorta and the hypoplastic left-heart syndrome.

Aortic Coarctation↗
PubMed1977

[An investigation into the effect of xerographic property on tomograms (author's transl)].

The properties of xerography as they affect tomography have been studied on phantoms. It was shown that, apart from better rendering of soft tissues, there is no fundamental difference. Section thickness and unwanted shadows are not influenced either way for optimal exposures. Significant improvement in diagnostic information can only be expected, if at all, under very special circumstances.

Models, Structural↗