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Biomedical subjects

G Friedmann

Publications and source records attributed to G Friedmann.

At least 127 records · Page 7Linked to original sources
PubMed1977

[CT diagnosis and differential diagnosis of renal spaca occupying lesions (author's transl)].

In 76 patients with space occupying lesions of the kidneys CT scans were performed. Size, shape and localisation of the kidneys could well be demonstrated by this method. Space occupying lesions were clearly seen, and solid tumors could be differentiated from cysts. However differential diagnosis between either primary renal cell carcinoma and metastases or between malignant and benign mass lesions was not possible. There was no problem in the diagnosis of hydronephrosis where as a differentiation between inflammatory changes and solid masses proved to be difficult. CT scanning seems to be usefull in the diagnosis of renal space occupying lesions. As a non invavise method it should be performed previous to renal angiography, which thereby becomes unnecessary in many cases.

Adenocarcinoma↗
PubMed1976

[Cinematographic and clinical findings from simultaneous two-plane coronary angiography (author's transl)].

Simultaneous cine-angiographic examination of the coronary arteries in two planes is now possible, due to technical advances, without losing any of the information that may be obtained by a single-plane technique. This method shortens the examination, reduces the radiation dose when compared with a large film technique and significantly reduces the risk to the patient. Our experience in 67 examinations is recorded.

Angiocardiography↗
PubMed1976

[Comparison of angiographic and bioptic findings in transplanted kidneys (author's transl)].

Comparison of angiographic, clinical and bioptic findings after kidney transplantation permits the following statements: Angiography is indicated with the appearance of a hypertony after transplantation and in clinically unclear reduction of function; it is the method of choice for proof or exclusion of a vascular complication. Recognizable vascular alterations and an extended arterial wash-out time during previous crises tend to indicate severe damage which affects the whole organ. On the other hand, the same alterations in chronic rejection do not permit a conclusive evaluation of the ability of the transplant to function. Isolated cortical ischemia in regard to rejection occurs relatively early and is prognostically an unfavourable sign. Differentiation of low grade rejection: tubular necrosis is hardly possible on the basis of the angiogram. As a result, the value of angiography for the diagnosis of rejection in the clinically important, but less pronounced, stages is limited. The most important of the informative diagnostic measures is renal sequence scintigraphy. This technique not only makes an early diagnosis possible but also an observation of the course of the reaction.

Adolescent↗
PubMed1976

[Patient dosage load with the vidio amplifier technique in pediatric radiology (authors transl)].

The desired reduction of dosage with the indirect technique compared with the close up is only obtained if the vidio amplifier (i.e. 50 muR/picture) is adjusted exactly, if the input potential of 60 kV is not exceeded, particularly for infants, and no high kV grids are used. An adjustable diaphragm in front of the camera with the adjustment of the vidio amplifier and with the electron-optical changeover from, for example 9" to 5", would result in an additional reduction in dosage.

Age Factors↗