PubMed Health⌕ Search

Biomedical subjects

R Seyss

Publications and source records attributed to R Seyss.

At least 19 recordsLinked to original sources
PubMed1992

[Representation of texture parameters of B-mode sonograms in image form].

The possibility is exemplified of visualising important parameters of the statistical texture describing the echogenicity of ultrasound B-mode scans of the liver as a composite image. The two relevant parameters are gray level and standard deviation of gray levels. These were selected because they offer the best criterion to differentiate between tissues. In a composite image, the mean gray level is represented by the luminosity information, whereas the other main parameter of the gray-level histogram, the standard deviation of gray levels, is represented by the colour information. These composite images show texture parameters of the whole scan and allow an efficient documentation of the same.

Humans↗
PubMed1991

[An object analytical procedure for determining the area of the thyroid gland parenchyma accumulating nuclides in the scintigram].

An algorithm for object isolation was developed to determine the area of the thyroid in scintigraphic images, and its volume calculated therefrom so that operator-induced variations, common if the usual manual technique is used, could be avoided. The object isolation is performed for every possible threshold value. The resulting object isolation curves give a reliable and reproducible thyroid area. The method may be used routinely except in cases of blocked thyroid uptake or of multiple autonomous adenomas.

Algorithms↗
PubMed1990

[A retrospective study of the results of postoperative radiotherapy of hypernephroma].

Retrospectively the patients were analyzed, postoperatively irradiated because of a hypernephroidal kidney carcinoma during the years 1978 to 1988. With a total number of 44 patients 12 were in stage I (Robson), 13 in stage II, 17 in stage III and 2 in stage IV. The probabilities for a tumor-free survival of five years were 81%, 59% and 30% for the stages I to III. The local recurrence rate was 7%, caused by exclusion of clinically negative lymph-nodes from irradiation field. In addition to survival probabilities the complication rate of radiotherapy is analyzed too. To this additionally to analysis of symptoms of a possible side-effect the nuclear medical investigation of function of the remaining kidney was done in 9 selected tumor-free patients being irradiated in different techniques. A normal function was found in all cases. No severe side-effects can be shown in irradiated patients. Consequently the postoperative radiotherapy in hypernephroma is a supportive therapy of advanced tumor stages without severe side-effects. Further and greater planned analyses are necessary to comprehend prognostic factors.

Aged↗
PubMed1982

[Diagnosis of functional disorders of the gallbladder and bile ducts].

The technique of hepatobiliary function scintigraphy (HBFS) is described and the different stages of filling are analyzed. Continuous observation and registration of the flow of the administered test dose is undertaken so that any possible anomalies can be noted. After the administration of contraction agents (Biloptin stimulus), the function of the involuntary muscles of the gall bladder and bile ducts is examined. In this way irregularities of tone can be registered. The place of HBFS within the field of gall bladder and biliary tract diagnostics is defined.

Adult↗
PubMed1981

[Standardisation of the technique and interpretation of hepato-biliary functional scintigraphy (author's transl)].

The technique and interpretation of hepato-biliary functional scintigraphy requires some adaptation of the normal methods. Continual recording is necessary. By this means deviations from normal can be detected, such as stenosis of the hepatic ducts, anomalies of the gall bladder and its tone, spastic changes in the lower common bile duct, obstruction at the papilla, occlusion or stenosis of the cystic duct and duodeno-gastric reflux. A functional examination should be included in order to detect anomalies of gall bladder tone. It is stressed that hepato-biliary functional scintigraphy should be included in the scheme of biliary examinations.

Biliary Tract↗
PubMed1980

[Soft tissue technique--lateral view of the foot (author's transl)].

For exact anatomic analysis, radiographs are made of and correlated with anatomic sections of a cadaver foot. Three regions are being differentiated: The dorsal and the plantar and the calcaneal region. Normal findings are being presented as well as some pathologic soft tissue changes with special emphasis on the syndrome of "high edge calcaneus".

Connective Tissue↗
PubMed1979

[Standardised radiological investigation of the stomach with double contrast and fluorography (author's transl)].

The aims are presented and the technical equipment and application of different contrast media (barium sulphate and gas) are discussed. The steps of examination are divided into 5 phases. Thus, each part of the stomach is shown both by extreme filling and relief technique and by double contrast. The advantages and disadvantages of this technique are discussed. It is important to point out that the advantages of the double-contrast method could be fully realised only by fluorography.

Contrast Media↗
PubMed1979

[Explatory roentgen examination of the anal canal (author's transl)].

Endoscopy is supplemented by a roentgenographic exploration of the anal canal via single and double-contrast methods, as part of routine irrigoscopy. A brief description is given of the technique employed in the examination of 256 patients. Normal roentgen anatomy is described in detail, followed by a definition of the different stages according to the degree of blood filling.

Anal Canal↗
PubMed1979

[Late results after preirradiation of mastocarcinomas (author's transl)].

The results of 80 cases treated with preirradiations are described. The follow-up observation time was longer than ten years. The results are statistically evaluated. It must be emphasized that lenticular skin metastases could be prevented in most of the cases. Eleven cases of double mastocarcinoma were submitted to follow-up examinations. Only two of the patients whose first and second tumors were preirradiated showed a survival time of twelve to fourteen years.

Adult↗
PubMed1978

[Morphology of the incisura scapulae in relation to the frozen shoulder (author's transl)].

A flat incisura scapulae was registered on radiological examination of four cases of frozen shoulder. A modified X-ray technique was used to investigated 250 patients with spondylosis cervicalis in a morphological study of the incisura scapulae. Three types were found: Type I with a deep, sharp incisura, type 2 with a widened, balloon-sharped incisura and type 3 with a flat, barely-distinguishable incisura. The significance of the X-ray appearance is discussed.

Adult↗
PubMed1978

[On the roentgenologic observation of wrist flexion (author's transl)].

To analyze adduction (ulnar flexion) or abduction (radial flexion) at the wrist, a simple calculatory method is described (quitient from the length of the scaphoid bone--navicular bone or os scaphoideum--in radial and ulnar flexion), converted to angle measurement via the cosine value. The normal values are limited by the pathologic values, so that beginning lesions can be identified in this manner. Description of a few pathologic cases and of the limits and possibilities of the method.

Humans↗
PubMed1978

[Comments on the evaluation of the axial cubital joint X-ray film (author's transl)].

Evaluation of 250 axial elbow joint X-ray films included measurement of an angle between the ulnar and radial halves of the trochlea, which varies between 140 and 170 degrees. In cases where this angle was smaller, eminences of various size were found in the radial border of the olecranon. In addition, the distance between the ulnar border and the bottom of the sulcus of the ulnar nerve was increased with steep upright position of the ulnar half of the trochlea. Diffuse complaints were stadet in case of upright positioning of the ulnar half of the trochlea and formation of eminences at the radial border of the olecranon. These complaints were clearly different from the typical symptoms associated with ulnar or radial epicondylitis. The axial elbow joint X-ray film could supply objective pointers to assist in the diagnostic differentiation of these complaints.

Elbow Joint↗
PubMed1978

[Lateral view of the knee joint in soft tissue technique (author's transl)].

Soft tissue technique of the knee and normal anatomical findings are described. Five relatively radiolucent areas can be delineated distinctly as corpora adiposa from other connective tissues: 1. corpus adiposum infrapatellare, 2. suprapatellare, 3. praefemorale, 4. retrotibiale, 5. popliteale. A short description of pathological alterations follows.

Adipose Tissue↗
PubMed1977

[Roentgenmorphology of the sulcus of the extensor carpi ulnaris muscle (author's transl)].

For the roentgenographic definition of the form of the Sulcus extensor carpi ulnaris muscle 500 plain roentgenfilms of the wrist were examined. Three types were differentiated: Type I narrow sulcus, type II large sulcus, and type III no sulcus. In types Ia and IIa the distal end was slanted. They were classified as forms with increased concomitance of lesions of the radial part of the wrist. Consequences for joint mechanics are briefly discussed.

Forearm↗