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Biomedical subjects

A Kratochwil

Publications and source records attributed to A Kratochwil.

At least 55 records · Page 3Linked to original sources
PubMed1978

[Hormone profiles and hormone therapy in early pregnancy (author's transl)].

Hormone profiles in early pregnancy were established in 67 women and correlated to simultaneously performed ultrasonic examinations. Normal values for human chorionic gonadotropin (HCG), human chorionic somatotropin (HCS), oestradiol (E2) and progesterone (P) were established from the data obtained in 30 early pregnancies which culminated in the birth of a living child. Lowered HCG values were found in 17 out of 23 pregnancies which ended in miscarriage. In these cases ultrasonic examination failed to detect any heart action. Lowered HCS values after the 9th week of pregnancy are also certain proof of missed abortion. P and E2 values are shown to be a parameter reflecting activity of the corpus luteum graviditatis. In clomiphene- and gonadotropin-induced pregnancies higher values were found than in pregnancies managed by substitution treatment with twice weekly 10 mg oestradiolvalerianate + 500mg 17alpha-hydroxyprogesteronecapronate. Lowered P and E2 values with HCG values in the normal range indicate imminent insufficiency of the corpus luteum graviditatis. Pros and cons of hormonal therapy in early pregnancy are discussed.

Abortion, Missed↗
PubMed1978

[Ultrasonic diagnosis of ovarian tumours (author's transl)].

Precise knowledge of the echoanatomy of the normal female pelvis is a prerequisite in the diagnosis of ovarian tumours. Diagnostic criteria for the differentiation between cystic and solid lesions are discussed. The echographic appearance of uni-, multilocular, dermoid and endometriosis cysts and of ovarian cancer is described. 183 ovarian tumours were examined in the period from January 1st, 1976 until December 31st, 1977 and the preoperative diagnosis compared with the findings at operation, both macroscopic and histological. 158 cases (86.3%) were correctly diagnosed. In 13 cases (7.1%) the diagnosis was only partially correct. An incorrect ultrasonic diagnosis was made in only 12 cases (6.6%). Out of 183 cases the side of the lesion was correctly diagnosed in 128 patients (70.0%). Localization of the tumour could not be achieved or was totally wrong in 19 cases (10.4%). Estimated tumour dimensions concurred with the macroscopic measurements of the specimen in 90.7%. A false-positive result was recorded in 7 cases (3.8%), mostly due to a full bowel simulating a cyst of barely 4 cm in diameter. In 5 cases (2.7%) ultrasonic examination failed to detect the existence of a tumour. 2 of these tumours were follicular cysts under 4 cm in diameter. 2 ovarian cancers were missed. In 1 case the ovary was only slightly enlarged and the diagnosis was made only by frozen-section histology. In the second case the tumour was erroneously interpreted as originating from the sigmoid colon. Ultrasonic diagnosis is recommended for the detection and differentiation of ovarian tumours on the basis of the good results achieved.

Dermoid Cyst↗
PubMed1978

[Ultrasound in tumor diagnostics and treatment planning (author's transl)].

The fundamental requirements of irradiation planning are discussed delimitating the minimum and maximum demands of planning. Different possibilities to represent the topographic relations within the irradiation plane of the patient's cross-section are described. The computer-assisted system for irradiation planning, installed at our hospital by means of MAT construction, is discussed. A pathway is shown which leads to individual treatment planning and considers dosimetrically the actual conditions of the patient who will undergo radiation therapy. The possibilities and limits of ultrasonic cross-sectional imaging are demonstrated.

Diagnosis, Computer-Assisted↗
PubMed1977

[Ultrasound diagnosis in bone and soft tissue tumors (author's transl)].

The value of ultrasound diagnosis as an additional examination to x-ray and angiography is proved in various tumors and tumor like conditions of the locomotor system. It shows that the echotomogramms are helpful in various cases. This help results mainly in a better preoperative diagnosis of tumor size and topography and in some cases in the cognition of tumor structures. Therefore, this method can be a valuable information for surgery. In some cases the finding of soft tissue tumors is possible even when the x-ray and angiography do not give any information. In the search for tumor recurrence the ultrasound can also be applied.

Adolescent↗
PubMed1975

[Studies in the diagnosis of breast disease (author's transl)].

The relative diagnostic accuracy of clinical examination, mammography, thermography and ultrasound was investigated in a comparative study. Mammography proved to be the most accurate diagnostic method, followed by clinical examination, thermography and ultrasound. Whereas in cases of advanced cancer (T2 to T4 tumour diameter greater than 2 cm) the correct diagnosis was made most reliably by clinical examination, mammography was superior to all other procedures in T1 tumours and in impalpable tumours. In our opinion thermography and ultrasound should be excluded for routine use or as a screening test because of the high false negative results. It is, however, noteworthy, that small intraparenchymal cysts can be detected and localized by ultrasound in a very high percentage of cases.

Breast Neoplasms↗
PubMed1975

[Ultrasound diagnosis of bone and soft tissue tumours].

The findings of ultrasonic examination in bone and soft tissue tumours are evaluated for their usefulness in preoperative tumour diagnosis, with particular reference to size, demarcation, structure, as well as the topographic situation of the tumour. Furthermore, the results of ultrasonic tomograms are compared with those of X-rays and angiography. It seems that this simple method, which is without risk to the patient, is a valuable additional investigation in the diagnosis and therapy of tumours of bone and soft tissue.

Bone Neoplasms↗
PubMed1975

[The value and limitation of echotomography in the diagnosis of abdominal lymphomas in malignant diseases(author's transl)].

The indication for ultrasonic examination in addition to endolymphatic methods is discussed. In 23 histologically proved advanced cases the accuracy of lymphography was 77% and in echotomography 74%. In the diagnosis of lymphonodal enlargements in the area of the liver and spleen hilium echotomography proved to be a valuable diagnostic method independent from endolymphatic methods. In X-ray treatments echotomography enables us to estimate the therapeutic result and to evaluate the lymphonodal status. The controls are performed in an out-patient manner.

Abdominal Neoplasms↗