Biomedical subjects

H Strunk

Publications and source records attributed to H Strunk.

30 records · Page 2Linked to original sources

PubMed1988

[Structure of the wall of the gastrointestinal tract: a comparative sonographic-morphologic study].

High frequency ultrasound can resolve the structure of the wall of the gastro-intestinal tract into three highly echogenic lines with poorly echogenic zones between them. Sequential removal of layers of the walls of fresh specimens of the gastro-intestinal tract showed the following correlation between the sonographic and histological findings: the innermost and outermost highly echogenic lines correspond to incident and exit echoes. The middle line corresponds with the sub-mucosa and the junctional zones of the mucosa/muscularis mucosa and sub-mucosa/muscularis propria. The intervening low echo lines correspond with the mucosa and muscularis propria.

Animals↗

PubMed1988

[Endorectal sonography in rectal cancer].

35 patients with rectal cancer were examined in a prospective trial by endorectal ultrasound. In 27 patients the sonographic diagnosis of tumour penetration was correct as compared with histologic findings, in 7 patients infiltration depth was overestimated, and in one case underestimated. In 21 resected specimens, examined postoperatively in a water tank with the same equipment, ultrasonic examination was correct in 17; in no case was the infiltration depth underestimated. The different technical approaches in local sonographic staging of rectal cancer are discussed.

Humans↗

PubMed1988

[Sonography of pancreatic carcinoma. Sonomorphology, diagnostic accuracy and tumor staging].

Ultrasonography was performed in 125 consecutive patients with clinically suspected carcinoma of the pancreas. The most important diagnostic criteria were reflectivity and echo amplitude, which were locally decreased in 71% (50/70) and increased in 27% (19/70) of the cancers. The echogenicity and reflectivity did not differ in four endocrine active tumors and adenocarcinomas. The diagnostic accuracy was 83% (101/122); in 3 patients ultrasonography failed to provide adequate information. Dilation of the biliary tree was found in 68% (43/50) of the carcinomas and dilation of the Wirsungian duct in 52% (32/58). There was some difficulty in differentiating between pancreatic carcinoma and chronic pancreatitis because the echogenicity is similar for both and inflammatory and neoplastic pancreatic processes are also present in both diseases. Although only 2-3 cm in diameter, 87% (7/8) of the carcinomas were already in the T3 stage. Angiography to evaluate resectability is unnecessary only when vascular encasement, extensive infiltration of peripancreatic fat, or tumor thrombus has been demonstrated sonographically.

Adenocarcinoma↗

PubMed1988

[Fractures of the clavicle: classification, diagnosis, therapy].

Clavicular fracture is one of the most frequent skeletal lesions. In most cases the median third of the clavicula is affected (this is due to the peculiar biomechanical structure). Accompanying lesions and complications of clavicular fractures are rare. A total of 13 x-ray diagnostic techniques are described for clavicular fractures. X-ray film should, as a matter of principle, always be taken in two planes. Definitely the major part of clavicular fractures are treated conservatively (rucksack dressing), whereas surgery is reserved for few and strictly defined indications.

Clavicle↗

PubMed1988

[The Cruveilhier-von Baumgarten syndrome. Presentation of radiologic findings based on a case].

Marked portosystemic venous anastomosis of the parumbilical veins is referred to as the Cruveilhier-Baumgarten syndrome. Opening of these vessels has been described mainly in the sonographic literature. In this case report CT and MR findings are presented, which have been confirmed by angiography. This paper is intended to draw the radiologist's attention to dilatation of the parumbilical veins, which is a highly specific sign of portal hypertension resulting from intrahepatic blockage.

Humans↗

PubMed1988

[Lymphoepithelial hyperplasia of the tonsil at the base of the tongue].

A case report is communicated on lymphoepithelial hyperplasia of the tonsil at the base of the tongue. This may be demonstrated during radiological double contrast examination of the oesophagus as a protrusion of the mucosa of the hypopharynx with smooth or nodular relief pattern. Differential diagnosis is necessary especially against malignant neoplasms.

Adult↗

PubMed1988

[Typical radiologic findings in Mirizzi syndrome].

In extrahepatic cholestasis it is necessary to include Mirizzi's syndrome in the differential diagnostic considerations. Characteristic findings in sonography and computed tomography are: a stone incorporated in the neck of the gallbladder or cystic duct with an extension of the common hepatic duct above the stone and normal width of the bile duct below the stone; in endoscopic retrograde cholangiography (ERC, direct cholangiography), a characteristic finding is a smooth-walled, segmental stenosis through external compression or an incorporated stone.

Cholangiopancreatography, Endoscopic Retrograde↗

PubMed1988

[Kidney metastases in computerized tomography].

The CT image of renal metastases is described for 29 patients. The most frequent primary tumour was the bronchial carcinoma, followed by melanoma and cervical carcinoma. In 12 of 29 patients (41%) the metastases occurred bilaterally, in 17 (59%) unilaterally. 9/29 (31%) had solitary, 20/29 (69%) multiple renal metastases. In 19 (66%) these had a size of up to 3 cm and were situated intraparenchymally. Space-occupying growths up to a size of 10 cm which grew exophytically were seen in melanoma and carcinoma of the larynx and chorion. In the plain CT the metastases presented isodense or slightly hypodense in 25 of 27 examinations (93%). After application of contrast medium all presented hypodense with the exception of metastases of a chorionic carcinoma.

Humans↗

PubMed1987

[Computed tomography of atelectasis. A comparative experimental study].

After breathing pure oxygen, total atelectasis of one lung was produced in ten dogs; its development and regression was followed by CT and by conventional radiology. 30 seconds after cessation of ventilation, it was possible to show a rise in CT density of the atelectatic lung from -764 +/- 32 HU to -739 +/- 49 HU. The average time from the cessation of ventilation to total atelectasis averaged 5.5 +/- 1.1 minutes. The earliest sign on conventional radiographs was often seen after 30 seconds and usually after 60 seconds and consisted of mediastinal displacement. Extensive atelectasis regressed in only one out of six animals within one hour after resuming ventilation. The experimental methods and results and the significance of the physiological findings in a clinical context are discussed.

Animals↗

PubMed1987

[Diffuse leiomyomatosis of the stomach].

Sonography and computed tomography were the first imaging methods enabling the visualization of intramurally growing tumours of the stomach. The article reports on a rare case of a diffuse leiomyoma that was diagnosed by means of computed tomography.

Aged↗

PubMed1986

[Computed tomography of lung contusion. An experimental study].

A new experimental model has been developed to determine whether computed tomography has any advantages for the investigation of lung contusions. In 27 dogs, chest wall deformation was produced at speeds varying from 17.3 m/sec to 45.7 m/sec, leading to lung contusion. After the injury, 27 out of 27 (100%) CT examinations demonstrated the contusions, but only nine out of 24 (37.5%) were seen on conventional radiographs. In contrast to conventional radiography, which either failed to show the presence of a contusion, or which under-estimated the extent by more than one cm, in more than half the cases CT agreed with the pathological findings in more than 90%. No lung contusions were found at autopsy which had not been demonstrated by CT.

Animals↗

PubMedDate not supplied

Pulmonary contusion: CT vs plain radiograms.

In experimentally induced pulmonary contusions, CT (n = 27) and chest X-ray (n = 24) findings were compared with the findings at autopsy. Twenty-seven of 27 (100%) pulmonary contusions were visible by CT immediately after trauma compared with 9 of 24 (37.5%) in the chest X-ray. After 30 min follow-up, 18 of 24 (75%) lesions were seen on the plain film. Five of 24 (21%) contusions escaped detection on conventional radiographs. Computed tomography underestimated lesion size in 5 of 60 (8%) measurements, conventional radiographs in 21 of 36 (58%) measurements. Pathological examination never revealed a pulmonary contusion that was not demonstrated by CT. Therefore, pulmonary contusion seems unlikely in a trauma patient with normal pulmonary CT.

Animals↗