Biomedical subjects
G Wilms
Publications and source records attributed to G Wilms.
Biparietal thinning: correlation with CT findings.
A typical case of thinning of the parietal bones in an elderly female patient is reported. Frontal CT sections adequately demonstrate the disappearance of the diploë and the flattening of the outer table.
Early diagnosis of Budd-Chiari syndrome by computed tomography and ultrasonography: report of five cases.
In 5 patients with Budd-Chiari syndrome, computed tomography after intravenous bolus injection of iodinated contrast agents demonstrated images not previously seen in other diseases. The images are compatible with stagnation of contrast material at the periphery of the liver. In 3 of the 5 cases, grey-scale ultrasonography failed to document the normal hepatic veins draining into the inferior caval vein, but showed an intrahepatic network of comma-shaped venous structures. It is proposed that these two noninvasive approaches can help in establishing an early diagnosis.
[Digital intravenous subtraction angiography as a screening method in patients suspected of having renovascular hypertension].
Since January 1982 we combine urography in hypertensive patients with intravenous angiography of the renal arteries. In the first 20 patients examined by this new method, we also performed conventional intra-arterial angiography to evaluate the accuracy of the intravenous examination. In more than 80% of 104 patients the examination was of good diagnostic quality and both renal arteries were well visualized. I.V.D.S.A. has a lower morbidity and cost than conventional angiography. It is more accurate than urography and therefore gives us the possibility of a better screening of hypertensive patients.
Dynamic CT of the urogenital tract.
The theoretical basis for and the technique of intravenous contrast enhancement by bolus injection for dynamic CT examination of the kidney are described. The clinical applications of this method include the study of normal vascular anatomy of the kidney, congenital kidney abnormalities and form variants, space-occupying lesions, and kidney trauma. In tumoral lesions of the kidney, dynamic CT aids in detecting the lesion as well as in the tumor staging and evaluating operability. CT time density curves can be used to study disturbances in renal perfusion, but the clinical value of this method needs further confirmation.
Polysplenia.
A case of polysplenia associated with total abdominal situs inversus, central localization of the liver, and incomplete development of the inferior vena cava is reported. Various components of the syndrome were easily demonstrated by CT.
Percutaneous transluminal angioplasty: preliminary results.
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Intravenous digital subtraction angiography.
The authors report the preliminary results obtained with a prototype of a digital subtraction unit in intravenous aortography. This new method in its actual state of development is not able to replace conventional arteriography. The new technique can be applied in selected clinical conditions where conventional arteriography is contraindicated or impossible. Further improvement of the spatial resolution of the digital image and reduction of the amount of contrast medium may extend clinical applications of this method which may be able to reduce substantially the cost and morbidity of angiography.
Metrizamide enhanced CT in hydrosyringomyelia.
The exact evaluation of a hydrosyringomyelic cyst by metrizamide enhanced CT is reported. After intraventricular injection of metrizamide and overflow of contrast medium in the central canal of the spinal cord, CT scan revealed the exact shape and extension of the cyst from C0 to T7.
Applications of specific vascular opacification in CT of the upper abdomen.
Selective visualization of the arterial and venous structures by CT slices during the early vascular phase after a bolus injection has proven to be a great value in resolving the problems of false images, created by incorporation of these vascular structures in the silhouettes of abdominal organs. This constitutes an important advance in the study and differentiation of pseudopancreas pathology, pseudolacunar images in the hapatic parenchyma and in the study of the porta hepatis.
[CT of the liver in cirrhosis (author's transl)].
Of the diseases causing diffuse hepatic parenchyma alterations, CT will demonstrate most typically fatty replacement and hemochromatosis. Cirrhosis of the liver will be detected by CT in only a minority of the patients by virtue of changes in size and contour. Changes in attenuation coefficient in cirrhotic livers are described by some authors but not confirmed on a large scale until now. CT is useful for demonstrating associated anomalies such as signs of portal hypertension (splenomegaly, venous collaterals and ascites) and for studying the permeability of the portal vein.
Contrast enhancement by bolus technique in the CT examination of the kidney.
Clinical results of contrast enhancement by bolus technique in the CT study of the kidney, performed with a two second scanner, are presented. The value of the method is discussed in relation with congenital abnormalities and more extensively in the evaluation of mass lesions of the kidney. In comparison with the widely used contrast infusion technique for CT examination, early scans after contrast enhancement by bolus technique allow better study of anatomical details of the normal kidney and variants. Furthermore in mass lesions assessment of vascularity leads to better differential diagnosis.
Computed tomography of the normal adrenal glands: correlative study with autopsy specimens.
Computed tomography (CT) visualization of both adrenal glands was possible in 99 of 100 cases using a fast (2 sec) scanner. Previously reported CT variants of normal adrenal glands correlated well with transverse sections of 20 autopsy specimens.
Osteoblastic metastasis of parotid carcinoma with sun-ray periosteal reaction.
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Intravenous pancreaticography in computed tomography.
Intense pancreatic enhancement on computed tomography seems to be possible by the intravenous bolus injection technique. Despite a rather limited experience, promising clinical results have been obtained in the study of pancreatic disease, mainly concerning some aspects of acute and chronic inflammation and tumoral pathology.
CT demonstration of gas formation after renal tumor embolization.
Computed tomography findings in a case of embolized renal tumor are reported. Intratumoral gas appearing after embolization can easily be demonstrated by this imaging method.
Ultrasound and CT-findings in angiomyolipoma of the kidney: a report of four cases.
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[Use of rapid C.T. scanners in renal affections (author's transl)].
The advantages obtained by the use of the new rapid scanners have made computer tomography the method of choice for the investigation of kidney lesions. In fact, the benefits of the second generation of scanners, which were already of excellent quality, have been even furthur increased by the use of the rapid scanners which can be used to study the vascularization of renal lesions, for which traditional nephrotomography has been employed for a long period.