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Biomedical subjects

G Freitag

Publications and source records attributed to G Freitag.

At least 37 records · Page 2Linked to original sources
PubMed1989

[Computed tomographic diagnosis of rectal tumors].

Perirectal spreading of rectal carcinoma is significant for their therapy. Moreover, possible metastasis of the regional lymph nodes and/or of the liver must be detected before therapy. For preoperative staging CT-investigations in 52 patients were performed. For the tumour stages pT1 and pT2 correct CT-staging was achieved in 60% of the cases. CT-information on lymphogenic metastases is not satisfactory, liver metastases were detected with a sensitivity of 72%. 56 patients were investigated after abdominosacral rectum ablation. In 34 cases no local recidivation was detected, but 3 cases of liver metastases were found, also one metastasis of the kidney. Of 22 patients with regional recurrences 5 had liver metastases. 3 cases of lymphogenic metastasis were found.

Humans↗
PubMed1989

[The value of computerized tomography and renovasography in kidney injuries].

Computerized tomography (CT) and renal angiography are compared in the staging of traumatic renal lesions. After evaluation of 44 angiographic and 74 CT investigations in 111 patients it was concluded, that CT is superior to angiography in the diagnosis of blunt renal injuries. However, if vascular injuries are suspected an angiographic investigation should be done.

Adult↗
PubMed1988

[Correlation between clinical and paraclinical findings in brain tumors in comparison with the operation site].

On the basis of clinical material consisting of 147 brain tumors, the authors carry out a comparative investigation involving the site of the ensuing operation to ascertain the accuracy of the clinical and paraclinical diagnoses. Computed tomographic findings were deliberately excluded with the intention of focusing on the accuracy attainable by traditional means. Clinical findings, X-ray examination of the skull, ophthalmological findings, electroencephalographic and echoencephalographic data, nuclear diagnosis, and angiographic findings were all taken into account.

Brain↗
PubMed1987

[Diagnosis of obliterating vascular processes in the supraaortic area].

For the diagnostics of obliterating vascular changes in the supraaortic area the invasive diagnostics of the vessels is not to be renounced now as before. The indication to the angiographic investigation results from clinical, perfusion-scintigraphic and Doppler-sonographic-findings. Of 390 patients 289 pathological angiographic findings in the supraaortic vascular area. In 101 patients normal findings were stated. Altogether 509 individual pathological findings were represented. In the comparison of the results of the investigations in the various diagnostic methods the clinical neurological investigation showed itself as particularly evident method. It should be decisive for the indication to the invasive diagnostics. The correspondence between the angiographic findings and the result of the perfusion-scintigraphic and Doppler-sonographic investigations, respectively, was the greater the more expressed the extracranial vascular findings represented themselves. In 127 patients with multiple obliterating vascular changes the size of the pathological changes and their localization could be established only angiographically.

Arterial Occlusive Diseases↗
PubMed1986

Percutaneous angioplasty of carotid artery stenoses.

Percutaneous angioplasty is a well-established method of treating arterial stenoses and occlusions in various regions. In the carotid area this technique is still under discussion. The successful application of angioplasty in eight patients with carotid artery stenoses is reported.

Adult↗
PubMed1986

[Value of angiography and computerized tomography for preoperative evaluation of bladder cancer].

In a comparative study in 30 patients with tumour of the urinary bladder the value of angiographic and computer-tomographic investigation in the proof of tumours and for staging was controlled. In 30% of the cases the angiographic proof was not successful. A concordance to the histologically recognized degree of infiltration could be established by means of angiography in 36.6% and by computed tomography in 86.3%. When it is possible to apply computed tomography for staging we regard the performance of the angiography of the pelvis as no more indicated.

Angiography↗
PubMed1986

[CT findings in gastrointestinal tumors].

Any suspicion of lumino-abdominal tumour growth should be confirmed or invalidated by contrast medium examination. The authors of this paper, deviating from the generally accepted diagnostic strategies, used computed tomography and succeeded in recording gastrointestinal tumours from 25 patients. High-accuracy organ localisation of palpable intestinal tumours proved to be possible by means of computed tomography. Hence, primary diagnostic use of CT appears to be justified in exceptional cases.

Adult↗
PubMed1985

[Value of computer tomography and lymphography for staging of malignant testicular tumors].

Findings of computer tomographic and lymphographic examinations of 74 patients were evaluated concerning their evidence in the pretherapeutic staging compared with the histological results of lymphonodectomy. The security of the computer tomography was about 82.4%, the specifity about 95.12%, the sensitivity about 66.66%. Lymphographically, a security of 85.14%, a specifity of 95.12% and a sensitivity of 66.66% was achieved. The combination of the methods achieved a security of 91.7%, a specifity of 100% and a sensitivity of 71.72% was achieved. Metastases of lymphatic nodes less than 0.5 cm diameter were not recognized by means of the two methods. In 2 cases no metastases, which were not covered by means of computer tomography, could not be recognized lymphographically in slightly enlarged lymphatic nodes. In contrast to this in 11 out of 74 patients (14.8%) in the computer tomography an enlargement of the findings was the result in comparison to lymphography. Since none of the two methods is absolutely reliable for the proof or the exclusion of smaller metastases, in a secure evidence of the computer tomography before a lymphonodectomy the lymphography can be omitted.

Adult↗
PubMed1984

[Percutaneous transluminal angioplasty of carotid stenoses].

The use of percutaneous transluminal angioplasty for the treatment of stenoses of the carotid artery in three patients is reported. In two cases, the artery could be dilated to its original lumen and in the third a significant dilatation was achieved.

Adult↗