PubMed Health⌕ Search

Biomedical subjects

J Skucas

Publications and source records attributed to J Skucas.

17 recordsLinked to original sources
PubMed1992

CT in upper gastrointestinal tract perforations secondary to peptic ulcer disease.

Computed tomographic (CT) scans of 11 patients with perforations of the stomach or duodenum were reviewed to determine the variety and relative conspicuity of findings. Five patients had de novo presentation due to perforation of peptic ulcers, two had perforations at ulcer repair sites, and the remaining four patients had ulcer perforations following unrelated surgery. CT allowed recognition of at least one component of bowel perforation, such as extra-gastrointestinal gas and/or contrast, in most patients. In only three patients (27%), however, could these findings be specifically related to a perforation of the stomach or duodenum from the CT scans alone.

Adult↗
PubMed1991

Diverticulitis: an evaluation by computed tomography and contrast enema.

The role of a contrast enema and computed tomography (CT) was evaluated in 228 patients with a discharge diagnosis of acute diverticulitis. Forty-nine percent of these patients eventually required surgery. In the surgical group, 90% of contrast enemas and 69% of CT examinations reported either diverticulitis or findings compatible with diverticulitis. In patients treated medically, the negative results were higher with both modalities, although it is believed that a number of these patients were misdiagnosed. The contrast enema and CT influenced the decision for surgery in 17% and 6%, respectively, in patients undergoing these examinations.

Aged↗
PubMed1990

A method for estimating endocardial electrode stability.

Assessment of cardiac pacing electrode stability following implantation is of major importance. We describe a method of testing electrode stability using a provocative test. The method includes synchronized electrical pacing of the left phrenic nerve by an especially designed external pacemaker. A positive response is abrupt, a diaphragmatic contraction, which in turn induces an abrupt heart movement in its diastole, its relaxation phase. Fifty-six various endocardial electrodes were tested in this fashion. Seven electrodes, one with flange tip, two tined, and four had no fixation dislodged after this pacing test. Insignificant elevation of acute ventricular pacing threshold was observed. While this method appears to be advantageous, additional clinical data is necessary.

Animals↗
PubMed1978

The routine double-contrast examination of the esophagus.

Double-contrast examination of the esophagus can be carried out routinely on most patients referred for an upper gastrointestinal examination. Although there are several methods of performing the examination, this author has found the use of effervescent solutions and a low-viscosity barium sulfate suspension to be the easiest and quickest. The technique leads directly into a subsequent double-contrast examination of the stomach. Routine views of the esophagus in a single projection are sufficient with the double-contrast method in most patients. Lesions are readily identified both en face and in profile. If a suspicious area is seen or the patient has dysphagia, multiple views can subsequently be obtained. Such esophageal lesion characteristics are size, smoothness, irregularity, ulceration, wall retraction, and distensibility can be readily appreciated. The technique also lends itself to the study of hiatal hernias and the gastroesophageal junction. This double-contrast esophageal technique has been used with no complications in over 4000 examinations. It is readily mastered by beginning residents.

Air↗
PubMed1977

Esophageal obstruction following administration of "aged" barium sulfate tablets--a warning.

Esophageal obstruction was encountered in 2 patients following the adminstration of a barium sulfate tablet. The tablets did not disintegrate for over three hours. They had been stored in the radiology department for at least three years. In vitro tests showed that the old tablets did not disintegrate for three hours while fresh tablets disintegrated within 30 minutes.

Aged↗
PubMed1977

Pneumatosis intestinalis as a complication of jejunoileal bypass.

Four patients with pneumatosis intestinalis involving the unbypassed functioning bowel after jejunoileal bypass for obesity are reported. Previous publications of pneumatosis intestinalis after jejunoileal bypass discussed involvement only of the bypassed defunctionalized bowel. Symptomatology can range from mild to severe. The treatment of pneumatosis intestinalis is conservative. The specific etiology of the pneumatosis in this group of patients is not known.

Adult↗
PubMed1976

Comparison of the image quality of 105mm film with conventional film.

The contrast, resolution, geometric, and motion unsharpness, mottle, and overall impression of 105mm film were compared to these quantities in conventional spot film. It is believed that conventional filming is superior for low contrast objects and cooperative patients whereas with uncooperative, obese patients, the 105mm filming modality would decrease motion unsharpness.

Humans↗
PubMed1976

An evaluation of the Nissen fundoplication.

The characteristic radiological findings which follow a Nissen fundoplication are reviewed. The esophagus may be narrowed but is intrinsically normal. A pseudotumor at the medial aspect of the fundus is generally present. The history and radiographic findings can normally differentiate this defect from neoplasm or a nonoperated hiatal hernia. Postoperative clinical evaluation has shown this procedure to be very valuable in the amelioration of symptoms.

Esophageal Diseases↗
PubMed1976

An evaluation of screen-film speed characteristics.

The relative speeds of six commercially available screen-film combinations were evaluated. There is a nonlinear relationship throughout the kVp range between the calcium tungstate, barium strontium sulfate, and rare earth screens. The speed of the last two types falls off considerably at lower kVp levels.

Evaluation Studies as Topic↗
PubMed1976

Whole-gut irrigation as a means of cleaning the colon.

The authors describe a whole-gut irrigation method of cleaning the colon. Normal volunteers drank an irrigant solution at varying rates, and all but one achieved a radiologically clean colon within several hours. This method is proposed for use in the occasional study where a clean colon must be obtained in a relatively short period of time.

Adult↗
PubMed1975

The routine air-contrast examination of the esophagus.

An air-contrast technique of the esophagus is described. It is simple to perform routinely prior to an upper gastrointestinal study, can reveal unsuspected small lesions, does not lead to excessive dilution of the barium, and can be done just prior to obtaining air-contrast views of the stomach.

Contrast Media↗
PubMed1975

The effect of barium on blood in the gastrointestinal tract.

The effect of various commercial barium sulfate preparations on blood coagulation, flocculation, and hemolysis was studied. There was considerable variation not only among different barium products but also among different concentrations of the same product. There is no good experimental evidence that barium enemas do stop bleeding. It is probably best to avoid the use of any enema in attempting to control major colonic bleeding; but if an enema is given for this purpose, a tap-water enema is better, as it contains no anticoagulants and is more effective in producing clot formation than most barium suspensions.

Barium Sulfate↗
PubMed1975

New grid design for a fluoroscopic spot film device.

A new grid design for a fluoroscopic spot film device is presented. Fluoroscopy is achieved with a conventional low ratio grid, while spot filming is done with a high ratio criss-cross grid. The result is a low patient radiation dose during fluoroscopy, while the high ratio grid during spot filming provides a significant increase in subject contrast.

Fluoroscopy↗
PubMedDate not supplied

Radiological evaluation of rat colonic tumors.

Colon carcinomata were induced in rats with N-methyl-N-nitro-N-nitrosoguanidine. A magnified double contrast barium enema technique was developed for an in vivo study of tumor growth patterns. Invariably, all small tumors were smoothly outlined and were spherical or ellipsoidal in shape. Irregularity developed only when the tumors grew larger, at which time there was considerable variation in the tumor growth patterns. The onset, shape, progression, spread and number of tumors present can be studied without sacrificing the animal.

Animals↗