Biomedical subjects
J R Sty
Publications and source records attributed to J R Sty.
Bone scintigraphy: Methotrexate associated bone necrosis.
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Tc-99m-IDA hepatobiliary imaging: a fractured liver.
The authors describe the scintigraphic appearance of a fractured liver using a Tc-99m-IDA derivative. Tc-99m-IDA imaging provides both functional and morphologic information which is necessary in evaluating biliary tract trauma.
Thallium-201 brain imaging: CNS brucellosis.
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Skull scintigraphy in infantile hypophosphatasia.
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Bone scintigraphy: radiation-induced cartilaginous exostosis.
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Radionuclide "dermal backflow" in lymphatic obstruction.
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Cervical metrizamide myelography by lumbar puncture.
Cervical myelography with metrizamide administered by a lumbar puncture is described. Diagnostic information in the cervical region was obtained in 8 of the 8 patients studied. No major complications were encountered.
Clinical evaluation of metrizamide for neuroradiology in chilren.
Metrizamide is a nonionic water-soluble contrast medium for neuroradiological studies that is less irritating to the nervous system than other water-soluble agents. Studies in adults have shown that metrizamide has advantages over currently available media, but experience with children has been limited. Sixty-two children have had myelography or ventriculography using metrizamide. The children ranged in age from 11 days to 22 years. Technically satisfactory studies were obtained in every patient. No major complications were encountered. Minor side-effects included headache in 11 children (18%), mild nausea or vomiting in 16 children (26%), and fever in 4 children (6%). Seizures did not occur. One infant in the study subsequently died of unrelated problems; there was no evidence of arachnoiditis at postmortem examination. Metrizamide is a safe, effective contrast medium for neuroradiological use in children.
"Doughnut" sign due to metastatic Wilms' tumor.
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Arteriovenous malformation of the vertebral artery in a child.
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Abnormal myocardial image with 99mTc-pyrophosphate in a child on chemotherapy.
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Bone scintigraphy demonstrating Engelmann's disease.
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Radionuclide angiocardiography: use in the detection of myocardial rhabdomyoma.
A neonate with a large rhabdomyoma of the heart was evaluated with radionuclide angiocardiography. The images revealed a "cold" area on the inferior surface of the heart which displaced the left ventricle. The findings were correlated with radiographic angiocardiography and were verified at surgery and autopsy. The value of this noninvasive technique in the evaluation of a seriously ill neonate is stressed.
Panner's disease (osteonecrosis of the capitellum).
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"Doughnut" sign in adrenoleukodystrophy.
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Demonstration of a radionuclide pattern in phenochromocytomas in children.
Scintigraphic findings in a child with pheochromocytomas is illustrated. The patient demonstrated a hypervascular lesion during the radionuclide angiogram, and renal displacement on subsequent static images.
Nuclear anatomy of diversionary central nervous system shunts in children.
A simple method of demonstrating shunt morphology with 99m technetium diethylene triamine penta-acetic acid (99m Tc-DTPA) is described. The anatomic abnormalities are illustrated. Demonstration of the site of obstruction is useful in selecting the neurosurgical approach. The procedure is minimally invasive, accurate, and simple to interpret.