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Biomedical subjects

G Helweg

Publications and source records attributed to G Helweg.

27 records · Page 2Linked to original sources
PubMed1989

[The value of sonography in the therapeutic supervision of induratio penis plastica (Peyronie's disease)].

The article reports on 18 sonographically examined patients with clinically verified Peyronie's disease (induratio penis plastica) who underwent a basic sonographical classification according to the system of Kelami. Four weeds after the initial sonography a control study was carried out in 17 patients. 10 of these received a treatment by local instillation with Ontosein, whereas seven patients remained without treatment. In one patient an operation (Nesbit) had been performed in the meantime. 10 of the 17 examined patients presented a change of the initial findings. Seven patients out of the number of the patients who had received treatment presented a change, whereas three patients showed no change of their basic findings. The untreated group of seven patients demonstrated in three cases a change of the sonographic pattern, and four cases were unchanged. The most significant change of the sonographic appearance (treated or untreated) was an increased echogenicity of the corpora cavernosa. In some cases no plaques could be found, in one cases a new plaque developed. In two cases the initial hypoechogenic rings sign disappeared. Sonography, however, cannot prove the success of a specific therapeutic regimen, because 50% of all patients recover without treatment.

Adolescent↗
PubMed1988

[Ergospirometry and blood lactate data in the assessment of conditioning of soldiers in relation to physical activity within the scope of military service in the Austrian army].

21 soldiers completing their military service in the Austrian army were assessed before and at the finalizing of their basic military training, also to disarmament by spiroergometric and lactate tests according to their physical condition. Soldiers employed in fighting duties improved slightly in physical fitness at commencement of the basic training. By the time they reached disarmament there was significant improvement. The monitoring of administration personal significantly increased their physical fitness after the basic training, nevertheless the physical condition achieved before disarmament relapsed to the same standard as prior to military service. As a conclusion we suggest that the physical inactive group should be kept as small as possible and get an efficient training program in future.

Adult↗
PubMed1988

Double-contrast computed tomographic examination techniques in habitual and recurrent shoulder dislocation.

Preoperative planning of recurrent shoulder dislocation requires an accurate knowledge of bone and soft tissue lesions affecting the joint. A new method of double-contrast CT examination is presented which allows an accurate evaluation of the soft tissue structures important for the stability of the joint. Forty-two patients were examined with this technique, twenty-seven of whom (28 shoulders) were operated on, the procedure being selected on the basis of the CT findings. In all cases the preoperative CT findings corresponded to the intraoperative findings.

Contrast Media↗
PubMed1987

[Significance of rotation errors in supracondylar humeral fractures in the child].

To get information about the importance of malrotation for posttraumatic varus or valgus deformity a clinical, radiological and CT follow-up examination of 20 children who were treated for supracondylar fracture from 1983 to 1985 was done. Rotational-displacement was measured on computed tomographical images taken from the region where fracture had happened. On the ap follow-up X-ray from both, the fractured and the other side, and the X-ray which was made after reduction, the medial and lateral colonne were measured from a "special point" in the middle of the shaft of the humerus. The length of the colonnes and their difference were compared. 15 of the 20 patients showed internal malrotation, 1 patient external malrotation and 4 showed no rotational-displacement. In 15 of the 16 patients with malrotation, the rotational-displacement caused a change in the length of the colonnes. Just in one case malrotation caused a minimal deformity of the carrying angle without alteration of the length of the colonnes. 93% of the cases with internal malrotation showed varus deformity. In 3 cases we saw growth disturbance of the epiphyseal plate, but the induced alteration of the length of the colonnes were minimal compared with the changes caused by malrotation.

Child↗
PubMed1986

[Value of sonography following pancreas transplantation].

The authors report on 15 patients with pancreas transplants hospitalised at their clinic and treated appropriately between 1979 and 1984. Nine of these patients were subjected to control sonography directly after the operation and subsequently once weekly. The sonographic findings were compared with laboratory data and the clinical course of the patients' condition. One woman patient was subjected to control via CT. The clinical findings agreed with the laboratory values and the sonographic results. Hence, sonography after pancreas transplantation is an important "must". However, it is imperative to combine this with suitable laboratory tests and with a close watch on the clinical course in order to arrive at a relevant conclusion.

Adult↗
PubMed1983

[Sonography of the lower urinary tract].

According to literature and to our experiences sonography should be the first investigation of the lower urinary tract in children, if there is suspicion of obstruction or malformation. In many cases the localisation of obstruction or the diagnosis of malformation can be found. Furthermore by sonographic follow-up studies of ureter obstructions by tumors, by concrements or after surgery, the normal radiographic investigations like urography or retrograde pyelography can be reduced. Sonography is a valuable enrichment for investigations of functional and morphological changes of the urinary bladder, especially for the classification of bladder tumors: whereas the diagnosis of urethral diseases still is found by clinical investigations and conventional radiological procedures.

Adult↗
PubMedDate not supplied

Bone mineral densitometry in dialyzed patients: quantitative computed tomography versus dual photon absorptiometry.

Reduced bone mineral density (BMD) increases risk of fractures, thus making it necessary to monitor patients suffering from chronic renal failure and consecutive disturbance of bone metabolism. In order to evaluate the reliability of available methods, bone mineral density of the lumbar spine assessed with single energy computed tomography (QCT) was compared with bone mineral density of the lumbar spine, femoral neck, Ward's triangle and trochanteric region measured by dual energy photon absorptiometry (DPA) in 45 hemodialyzed patients with a mean hemodialysis duration of 35 +/- 26 months (SD). Depending on the measurement site and method 4-34% of dialyzed patients suffered from reduced BMD (z-score < -2). The highest correlation (r = 0.61, p < 0.01) was found between QCT of the spine, trabecular bone, and DPA of Ward's triangle. One year after baseline measurement bone mineral density was reassessed after randomization to either QCT or DPA in 14 and 18 patients, respectively. Whereas lumbar spine and femoral neck did not change, mean BMD showed a decrease at the measurement sites of Ward's triangle (DPA), trochanteric region (DPA) and trabecular bone of the spine (QCT), which, however, was statistically not significant. Cortical BMD of the spine assessed with QCT showed an increase. Although there is some reduction in bone density at most sites in hemodialyzed patients, no significant bone loss could be demonstrated over the course of 1 year.

Absorptiometry, Photon↗