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Biomedical subjects

K Somer

Publications and source records attributed to K Somer.

29 records · Page 2Linked to original sources
PubMed1982

Lymphographic findings in multiple myeloma.

The lymphographic appearances of the retroperitoneal lymph nodes in 10 patients with multiple myeloma have been analyzed. None of the patients had any signs of extramedullary involvement of myelomatosis before lymphography. In 3 cases irregular filling defects suggestive of myelomatous involvement were found. In one case they were close to a myelomatous bone lesion, whereas in the others the lymphographic abnormality was totally unexpected. In all 3 patients other nodes showed reactive hyperplasia. Such nonspecific hyperplasia was also encountered in 3 other cases. In 2 cases the myelomatous involvement of lymph node was detected before the diagnosis was recognized which is contrary to the belief that multiple myeloma involve nodes late in the disease. In addition to diagnostic aid the lymphographic demonstration of the myelomatous spread into lymph nodes may influence on the selection of the therapeutic approach to the disease.

Adult↗
PubMed1981

[Stress fractures of the femora in soldiers (author's transl)].

Amongst 936 stress fractures found in soldiers, there were 58 in the femora (6%); of these 31 were in the neck and 27 in the shaft. Two were bilateral, and two patients had other stress fractures. Three displacements were found in the necks. In the shaft, 20 fractures were proximal, four were in the middle third and three in the distal third. In the latter group, it is necessary to differentiate from a sarcoma. CT is a new aid in this respect. Sport in highly motivated individuals appears to contribute particularly to fractures of the shaft. The symptoms from these fractures are relatively mild.

Adolescent↗
PubMed1977

Double contrast X-ray examination of stomach.

A comparison was made between three double contrast methods and the conventional method of X-ray examination of the stomach. 106 patets received ordinary barium sulphate together with effervescent granules. 119 patients were examined with a special barium sulphate preparation containing dissolved carbon dioxide (Baritop). The third group, 100 patients, received Baritop and effervescent granules, and 100 patients a conventional barium meal. The films were analyzed as to the quality of mucosal pattern demonstration, mucosal affinity of the contrast medium, and the degree of dilatation of the stomach and duo8num. In addition, the degree of interference by gas bubbles was estimated. The best results were obtained with the contrast medium containing carbon dioxide (Baritop).

Barium Sulfate↗
PubMed1977

Semiselective renal angiography, a useful method for evaluating the vascular supply in both kidneys.

A list of methods of semiselective renal angiography is presented. One of these methods is described. A series of 151 semiselective and 41 aortorenal angiographies is analyzed. The results are evaluated by comparing the visualization of the peripheral renal arteries and by comparing the opacification of other cranial branches of the abdominal aorta. Semiselective renal angiography is a useful method in cases requiring the examination of both kidneys.

Angiography↗
PubMedDate not supplied

Combination of multiple pencil-beam imaging to computed storage phosphor radiography: a new method.

Computed radiography (CR) with storage phosphors offers a wide dynamic range and improved sensitivity compared to film-screen technology. CR was combined in this study with a prototype multiple pencil-beam (MPB) imaging device which has been shown to be very effective in scatter reduction. The combination was analyzed and compared to the standard technique of grid screening in two ways: a free-response ROC (FROC) analysis was first performed followed by a blinded test arrangement for visual analysis of image quality in a series of computed radiography of the lumbar spine by both the MPB and grid modalities. The results of the FROC study showed a statistically significant (P less than or equal to 0.01) improvement in signal detection. The MPB-CR images of the lumbar spine had more contrast but also a slightly mottled or grainy appearance. Image quality was found good but contrast processing was criticized because it seemed to result in a too steep display of contrast in MPB imaging. This should be avoidable by changing the image processing parameters.

Adult↗
PubMedDate not supplied

Differential diagnosis of anterior upper mediastinal expansions by contrast-enhanced computed tomography.

This study investigated the potential of contrast-enhanced CT in the differential diagnosis of the most common anterior upper mediastinal expansions. CT examinations of 29 patients with an upper anterior mediastinal mass lesion of unknown origin were reviewed retrospectively and compared with the clinical data obtained. The density, contrast enhancement and invasive nature of the tumors were recorded. Thyroid tissue was enhanced most and lymphomas least. Contrast medium injection helped to distinguish great vessels and cystic lesions from surrounding areas. Thyroid tissue was most heterogeneous and lymphomas most homogeneous. All except one of the malignant neoplasms (a lymphoid mass lesion) were infiltratory in nature. Contrast-enhanced CT gives clues as to the origin of a neoplasm and whether it is benign or malignant.

Adult↗
PubMedDate not supplied

Computed tomography of pleural lesions with special reference to the mediastinal pleura.

Computed tomography (CT) and conventional chest radiography were reviewed in retrospect in 84 patients in whom pleural pathology was suggested clinically. The importance of administration of contrast medium in distinguishing between malignant lesions and other pleural diseases was given special attention. CT was found to be of value in diagnosing and establishing the extent of pleural lesions, especially in the mediastinal region. All malignancies exhibited high contrast enhancement following intravenous bolus injection of contrast medium. There were no features specific for mesotheliomas distinguishing these from other pleural malignancies. Some benign infectious lesions also showed high contrast enhancement. High contrast enhancement thus indicated malignancy only if an infectious lesion could be excluded. If contrast enhancement was absent or slight, the lesion was likely to be benign. Clinical follow-up may be regarded as justified in such cases. Indirect signs were not helpful in distinguishing between malignant and benign lesions.

Contrast Media↗