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Biomedical subjects

A T Gronner

Publications and source records attributed to A T Gronner.

11 recordsLinked to original sources
PubMed1994

Plain film radiography of the chest: findings that simulate pulmonary disease.

Many pitfalls are encountered while interpreting routine radiographs of the chest. Intrathoracic disease can be mimicked by disease or anatomic variation of the superimposed bony thorax and soft tissues, by artifacts, and by iatrogenic intrathoracic changes. Although cross-sectional imaging may occasionally be necessary to solve a problem case, most often the simple use of an additional projection such as a lordotic, kyphotic, oblique, or skin marker view is sufficient to exclude pulmonary disease. We illustrate a series of cases in which serious intrathoracic disease was mimicked by extrapulmonary processes. The correct interpretation of these findings in a timely manner with relatively simple and inexpensive maneuvers can save the patient unnecessary worry and expense.

Diagnosis, Differential↗
PubMed1989

Imaging of the nontraumatic acute abdomen.

Plain-film radiography of the abdomen is often the first-line imaging modality used for the patient in the ED. It is capable of demonstrating abnormal locations of gas, abnormal viscera, calcifications and foreign material, and skeletal and lower lung pathology. PFR findings may aid in the decision to proceed to other modalities. Contrast studies have a limited role in the ED but may be necessary to diagnose disease inadequately visualized by PFR, as in the case of perforated duodenal ulcer, missed on PFR in approximately 15 per cent of cases. Ultrasound is most useful in the ED for obstetric and gynecologic illness, as well as disorders of the hepatobiliary system. Nuclear medicine studies can be very useful for GI bleeding and inflammatory conditions but may not always be as available or convenient as other modalities. CT has very broad usefulness. Angiography is very useful for locating bleeding sites, especially in the large bowel, and for determination of mesenteric arterial patency in suspected mesenteric ischemia. Finally, MRI, which has enormous potential, is not funded by many third-party payment plans for use in emergencies, and must overcome certain obstacles before it assumes common usage in the ED.

Abdomen, Acute↗
PubMed1971

Tracheocoele.

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Barium Sulfate↗
PubMed1967

Routine high dose excretory urography.

Radiologic evaluation of 316 excretory urograms utilizing a single 50 ml injection of a 50 to 60 per cent tri-iodinated contrast medium indicated that these studies are of better quality than those previously obtained with the injection of 30 ml. The low incidence of side effects coincides with recent reports in the literature that this dosage level is safe. High dose intravenous drip infusion pyelography was necessary only in selected cases. High dose excretory urography is recommended for routine use.

Contrast Media↗