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Biomedical subjects

T B Hunter

Publications and source records attributed to T B Hunter.

At least 73 records · Page 4Linked to original sources
PubMed1983

The silent abdominal abscess: role of the radiologist.

An abdominal abscess usually causes severe distress with fever, leukocytosis, pain, and toxicity. However, a small but significant proportion of patients with abdominal abscess may appear entirely well with no elevated temperature or white blood cell count. Fifteen patients are reported whose initial clinical presentation was unremarkable but who had significant abscess formation that was well documented by radiographic methods. Both the radiologist and the patient's primary physician must be aware of the not infrequent presentation of abdominal abscess in a clinically innocuous manner. The lack of fever, elevated white blood cell count, or patient complaint should in no way rule out the diagnosis of abscess when positive radiographic evidence is found.

Abdomen↗
PubMed1982

Subjective vs. objective evaluation of gallbladder opacification during oral cholecystography in comparative clinical trials: implications for studies involving visual assessment.

Radiographs and CT images taken during oral cholecystography in dogs were interpreted in an independent, blind fashion by three radiologists on two occasions and visual assessment of gallbladder density compared to the actual CT values. While there was significant intra- and inter-observer variation, the mean scores for the observers' interpretations of both radiographs and prints correlated well with the actual CT values (p less than 0.05). In five out of six comparisons between first and second readings, the observers gave a lower score on the second reading. The considerable variation reflects the problems inherent in subjective evaluation of agents that produce small but measurable differences in radiographic density. Studies involving such subjective data have to be carefully designed in order to obtain meaningful results.

Administration, Oral↗
PubMed1982

Re: CT units.

Explore the source record for details and available documents.

Tomography, X-Ray Computed↗
PubMed1982

Phlegmon of the pancreas.

One of the significant complications of pancreatitis is the development of a pancreatic phlegmon, a noninfected solid mass of inflamed pancreatic and retroperitoneal tissues. Clinically, a phlegmon may be confused with other pancreatic masses, especially a pseudocyst. Phlegmons typically present as palpable epigastric masses which are solid on sonography and computerized tomography. They usually resolve in a few weeks with nonsurgical conservative therapy. This report discusses the radiographic and clinical picture of pancreatic phlegmons as illustrated by four cases.

Acute Disease↗
PubMed1981

Concentration and excretion of contrast agents during oral cholecystography as measured by computed tomography in dogs.

Nine healthy mongrel dogs were given 2 consecutive doses of 1 of 3 cholecystographic contrast agents (iopanoic acid, sodium ipodate, and sodium tyropanoate), followed by daily computed tomograms (CT) and abdominal radiographs in a randomized crossover study in order to determine: (a) the maximum time for excretion of the contrast material from the gallbladder, (b) the maximum time for elimination of contrast material from the blood, and (c) the correlation between the density of the gallbladder on CT and the actual concentration of iodine in the gallbladder bile. In all 9 animals gallbladder opacification disappeared on CT within 4 days after administration of the contrast material. Plain abdominal radiographs did not show gallbladder opacification after 2 1/2 days. Daily blood iodine measurements showed that all of the contrast material was cleared from the blood within 7 days after administration. In 7 dogs CT imaging of the gallbladder was followed by percutaneous aspiration of bile from the gallbladder using CT guidance. There was a direct linear correlation between the actual concentration of iodine in the bile and the density of the gallbladder on CT (r = 0.925). This suggests that CT measurements can be used to determine the concentration of contrast agents in the gallbladder during oral cholecystography.

Administration, Oral↗
PubMed1980

The effect of diet and fasting on gallbladder opacification during oral cholecystography in dogs as measured by computed tomography.

To determine the influence of diet and fasting on gallbladder opacification during oral cholecystography, 10 dogs were studied in a blind, random fashion, giving single or two consecutive doses of iopanoic acid, sodium tyropanoate, or sodium ipodate while the animals were fasting, on a normal diet, or on a low-fat diet. Gallbladder density was determined by CT to eliminate the bias created by subjective interpretation of radiographs. For maximum, first-dose gallbladder opacification during clinical cholecystography, iopanoic acid should be given with a meal and sodium ipodate while the patient is fasting; diet makes no difference with sodium tyropanoate. For maximum opacification with two consecutive doses, iopanoic acid may be given with a meal or during fasting, while sodium ipodate and sodium tyropanoate should be administered during fasting.

Administration, Oral↗