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Biomedical subjects

G Endert

Publications and source records attributed to G Endert.

At least 55 records · Page 3Linked to original sources
PubMed1980

Recognition of systemic portal shunts by lower extremity radionuclide venography.

Radionuclide venography was used to conduct 120 investigations of pelvic veins to find signs of systemic portal shunting. No signs of flow abnormalities were shown in the upper abdominal region in 80 patients with normal pelvic veins; 40 patients suffered from pelvic occlusions. Of these, 10 showed paraumbilical hot spots or liver demonstrations. These symptoms are assessed as signs of systemic portal shunts. The hemodynamic significance of this complication of pelvic vein thrombosis is discussed. It is supposed that a shunt from the systemic veins to the portal vein does not occur as infrequently as described in the literature. The radionuclide venography with 99mTc microspheres is a new and simple way to detect complication of pelvic vein occlusions.

Adult↗
PubMed1980

[Intervention radiology for guided needle aspiration biopsy (author's transl)].

Aspiration of material on the basis of radiological examination is a well suited method of intervention radiology. This is demonstrated by lesions of the breast, thyroid gland, lungs, mediastinal masses, lymph nodes, skeleton and kidney. Intervention radiology represents the combination of tumour localization and guided cytological diagnosis without additional risks for the patient.

Biopsy, Needle↗
PubMed1980

[Role and results of placental scintigraphy in modern obstetrics (author's transl)].

Placental scintigraphy was performed on 367 pregnant women over seven years. Indications were prepartum bleeding in 200 patients, Rh incompatibility in 111, and other types of high-risk pregnancy in 56. Nuclide113m In Cl3 was primarily used, with a scintillation camera being used for scintigraph recording. The sensitivity accounted for 98 per cent. The placenta was found to stick to the fundus or other parts of the uterus in 280 cases or in deep positions in 37 cases. It was partially existent in 27 cases and totally existent in 16 instances. Placenta praevia had been the cause of prepartum bleeding in 17 per cent of the patients checked, in that context. Abnormal foetal presentations were recordable more often from those cases, but rates of malformation were not increased. Clinical retention time and mode of delivery were found to depend on both obstetric results and position of the placenta. - Dependable findings with regard to localisation prior to the 28th week of pregnancy were scintigraphically obtainable only from 82 per cent of all cases, which figure went up to the order of 91.2 per cent in response to scintigraphy as of the 35th week of pregnancy. - The scintigraphic findings recorded from 209 patients were rechecked and verified in 193 cases, bringing the accuracy to 92.4 per cent.

Adolescent↗
PubMed1979

[Isotope methods in the diagnosis of venous disease. I. Methods of radionuclide venography (author's transl)].

The method of radionuclide venography is best determined by the localisation and type of suspected venous abnormality. The authors describe four methods using 99mTc microspheres and 99mTc-pertechnetate. Correlation of the isotope and angiographic findings in 150 patients indicated an accuracy of 90% for the isotope methods. The risks of radionuclide venography are discussed. Isotope venography is recommended as a simple, non-invasive technique.

Arm↗
PubMed1979

[Isotope methods in the diagnosis of venous disease. II. Results of radionuclide venography (author's transl)].

The frequency of scintigraphic findings in the presence of thromboses, post-thrombotic changes and in normal veins, was determined in 150 patients. The results of radionuclide venography and contrast venography in these patients have been compared. Abnormalities in veins can be detected by radionuclide venography with a high degree of accuracy. Differentiation between acute and chronic thrombosis and post-thrombotic changes can only be made by invasive contrast venography.

Adult↗
PubMed1979

[Isotope methods in the radiological diagnosis of venous disease. II. Indications and accuracy (author's transl)].

Radiological diagnostic methods for the diagnosis of abnormalities of veins were discussed in the light of 1,683 contrast venograms and isotope examinations in 650 patients with acute and chronic diseases of veins. For patients with increased thrombotic risks, the 125 I-fibrinogen test is recommended as a sensitive and simple method. Where there are symptoms of venous thrombosis, radionuclide venography, together with other noninvasive methods, may be used for establishing whether there are indications for contrast venography. These may also provide evidence of previous pulmonary emboli. These methods should also be used where there is clinical suspicion of previous pulmonary emboli. Non-invasive isotope methods have proved to be sensitive techniques for preliminary examinations and for follow-up. Contrast venography is necessary if definitive treatment is planned.

Acute Disease↗
PubMed1979

[99mTc marking of gel foam for catheter embolisation (author's transl)].

A simple method is described for marking gel foam particles with 99mTc after reduction of the pertechnetate. This is carried out in the Luer lock syringe to be used for the injection. After embolisation and control angiography, the patient is placed under a scintillation camera. The position of the embolising material can then be demonstrated scintigraphically. In six patients marked emboli were found to be correctly placed. In another patient undergoing a second embolisation for a renal tumour, particles were found in the peripheral circulation.

Angiography↗
PubMed1979

[Vertification of the age dependence of salivary gland function by means of 99 Tc sialadenoscintigraphy].

The authors describe the salivary gland function diagnostics by means of 99mTc-pertechnetate under the conditions of computer scintigraphy. Parameters suited for numerical evaluation were selected. The age-dependence of the parotid gland function was studied in 49 healthy subjects of different age-groups. The present results permit to exclude such a dependence. The values obtained may be used as basic documentation in evaluating pathological conditions of the parotid gland by means of function diagnostics.

Adult↗
PubMed1978

[Scintigraphic evidence of changes in liver shape following splenectomy (author's transl)].

It has been suggested in the literature that, following splenectomy, the shape and position of the liver become altered and that this may lead to errors in the interpretation of the liver scans. For this reason, liver scans before and after splenectomy were compared in 16 patients with Hodgkin's disease. No changes in shape or position of the liver were found which could be related to the splenectomy. However, the clinical features and treatment must be known to ensure correct interpretation.

Hepatomegaly↗
PubMed1978

[Radiation dose to the finger during injection of short-lived radionucleids in nuclear medicine (author's transl)].

The increasing use of short-lived radionucleids has shifted much of the radiation from the patient to the personnel. The purpose of this investigation, therefore, was to ascertain the greatest possible radiation dose to the fingers during injection of short-lived radionucleids. Basis for radiation measurements were small ionisation chambers attached to plastic syringes filled with radio-active material. By examples of typical situations, it was shown that the legally permissable values for partial body exposure may be exceeded. The necessity for using screening of the syringes is stressed. A simple method for making screening cylinders out of Wood's metal is described.

Fingers↗
PubMed1978

[Significance of the embolization of the arteria renalis for the treatment of kidney tumours (author's transl)].

In 24 patients with malignant kidney tumours percutaneous embolizations of the arteria renalis were performed in about 1 year. The material for embolization was gelatine-sponge-particles. The embolization was done pre-operatively, usually in connection with the arteriographic examination of kidney tumours (hypernephroid carcinoma). In 2 patients without operation it was done as a palliative measure. Our favourable results to improve the operability of tumours agree with reports in the literature. According to our opinion the pre-operative embolization of the arteria renalis with kidney tumours offers the possibility of a blood-sparing operation and a reduction of tumour-cell outwashings.

Adenocarcinoma↗