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Biomedical subjects

R Siegert

Publications and source records attributed to R Siegert.

At least 73 records · Page 4Linked to original sources
PubMed1992

Ultrasonographic fine-needle aspiration of pathological masses in the head and neck region.

Two hundred and eight ultrasonographic fine-needle aspiration biopsies were performed in patients with head and neck masses and examined cytologically. The average minimum diameter of the masses was 1.5 cm. The smallest punctured lymph node located in the perivascular sheath had a diameter of 0.4 cm. In none of the patients were complications observed. Ninety-seven percent of the diagnoses based on cytological examination were confirmed in the histological examination of surgical biopsies or in the further clinical course.

Biopsy, Needle↗
PubMed1991

[Ultrasonic diagnosis of the tonsillar region].

From 1989 to 1991, 126 tonsils were prospectively studied in cadavers, volunteers and patients by B-scan ultrasonography. The transducer was positioned just medial of the mandibular angle. The submandibular gland, M. digastricus, M. stylohyoideus and the tongue proved to be suitable landmarks. Normal and chronically inflamed tonsils both presented as oval structures with weak echos. Peritonsillar abscess could not be sonographically defined in 13/15 cases. Squamous cell carcinoma presented with random echos and indistinct borders. Infiltration of the base of the tongue could be safely confirmed.

Humans↗
PubMed1990

[Ultrasound-controlled fine needle biopsy of pathologic space occupying lesions in the head and neck area].

We report 121 fine-needle aspiration biopsies of tumours and lymph nodes of the head and neck guided by ultrasound. The average minimal diameter of the lesions was 1.2 cm; the smallest lymph node was adjacent to the carotid artery and had a diameter of 0.4 cm. There were no complications. Of the cytological results 96% were confirmed by histology or by the subsequent clinical course.

Biopsy, Needle↗
PubMed1990

[Benefits and limits of sonography of the masseter muscle].

A sonographic method for diagnosis, follow-up and quantification of normal and hypertrophied masseter muscles is presented. This technique lends itself to diagnosis of macroscopic structural alterations of the muscle as well as tumors in the vicinity. Functional or microscopic tissue changes like trigger points in myofacial pain-dysfunction syndrome cannot be detected sonographically.

Adult↗
PubMed1989

[Results of physiotherapy for patients with myofacial dysfunction].

The methods and results of physiotherapy in the treatment of 200 patients with myofacial pain are described. The first step in this treatment consists of exercises to enhance body awareness. This is followed by mobilization of the entire locomotor system and manual massages for muscle relaxation. Subsequently coordinated physical exercises are performed to train complex movement patterns of masticatory, facial and trunk muscles. 127 patients (64%) could be cured by means of physiotherapy and behavioral guidance alone, another 53 patients (27%) with additional bite plane therapy.

Adult↗
PubMed1989

[Stabilizing splint versus relaxing appliances in the treatment of myofacial pain. Preliminary results of a prospective randomized study].

Both stabilizing splints and relaxing appliances have been recommended for the treatment of myofacial pain. It was the goal of the present study to compare the therapeutic effect of these two types of appliances. 26 patients with myofacial pain, whose symptoms were not overshadowed by arthropathy and in whom previous physiotherapy had failed to bring about sufficient pain relief, were divided into two prospectively randomized groups. They received either a stabilizing splint or a relaxing appliance. The therapeutic effect was assessed with the aid of the patients' subjective reports and the Helkimo indices. In spite of the small number of patients the statistical evaluation of the results showed stabilizing splints to be significantly (p less than 0.03) superior to relaxing appliances in the treatment of myofacial pain.

Facial Pain↗
PubMed1987

Ultrasonography of inflammatory soft tissue swellings of the head and neck.

Experience with 107 B-scan sonographs of inflammatory soft tissue swellings of the head and neck is described, and an echomorphologic classification is proposed which consists of the following five types: edema, infiltrate, preabscess, echo-poor, and echo-free abscess. Because the clinical course of the symptoms differs significantly between the last three types, it was concluded that they represent different stages of abscess formation. A comparison of all the physical and sonographic diagnoses showed only slightly higher sensitivity for sonography. However, with regard to the specific diagnosis of abscess, the sonographic examination seemed to be superior to the clinical diagnosis.

Abscess↗
PubMed1987

Significance of arthrography and computed tomography in the assessment of internal derangement of the temporomandibular joint.

Arthrography was performed on 56 joints of 47 patients presenting with symptoms of pain and dysfunction of the temporomandibular joint. The diagnosis could be confirmed in 53 joints. In addition, there was evidence of 13 perforations and 7 joints with adhesions. In 51 of the affected joints, computed tomography (CT) was also performed to compare both methods. The same CT procedure was performed on 12 joints of patients without any joint problem. Almost consistently (88%), an arthrographically anteriorly dislocated disc was detectable in the axial CT scans. 92% of the healthy joints showed normal soft tissue structures. For CT visualization of a displaced disc sagittal reformations or primary sagittal scans are not necessary. Confirmation of possible perforations or adhesions cannot be made by CT. Comparing the advantages and disadvantages, arthrography must still be regarded as superior to CT. In some cases, however, CT is a valuable tool in assessing an internal derangement.

Arthrography↗