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Your search keyword '"C. Holder"' showing total 4 results
Start Over Author "C. Holder" Journal radiology
4 results on '"C. Holder"'

1. Choosing a contrast material for aortofemoral runoff angiography

Author

John C. Holder and Glenn V. Dalrymple

Subjects
medicine.medical_specialty, medicine.diagnostic_test, Methylglucamine Iothalamate, business.industry, media_common.quotation_subject, Sodium, chemistry.chemical_element, Contrast Media, Iothalamate Meglumine, Pain, Sodium methylglucamine diatrizoate, Aortography, Femoral Artery, chemistry, Angiography, medicine, Contrast (vision), Humans, Radiology, Nuclear Medicine and imaging, Radiology, business, media_common, Diatrizoate Meglumine
Abstract

Aortofemoral runoff angiography was performed 63 times in a total of 21 patients, each of whom was injected three times with different contrast materials (60% methylglucamine iothalamate, 78%) sodium methylglucamine iothalamate, and 76% sodium methylglucamine diatrizoate). Neither the examiner nor the patient was aware which contrast material was being given. Significantly fewer patients reported severe injection pain with methylglucamine iothalamate than with the other two agents.

Published
1978

2. The Use of a Tip Deflecting Guide in Untying a Knotted Arterial Catheter

Author

James F. Cherry and John C. Holder

Subjects
Male, medicine.medical_specialty, medicine.diagnostic_test, Angiographic catheters, business.industry, Angiography, food and beverages, Arterial catheter, Catheterization, Surgery, Catheter, surgical procedures, operative, Knot (unit), stomatognathic system, medicine, Humans, Radiology, Nuclear Medicine and imaging, Radiology, business, Aged
Abstract

Although knot formation occurs only rarely in the distal portions of angiographic catheters, its prompt recognition and the knowledge of various techniques for untying the knot can avoid surgery. The authors describe a unique method for untying a catheter knot using a 60 cm .035-in tip deflecting guide.

Published
1978

3. Ureteral Ectopia Associated with Seminal Vesicle Cyst and Ipsilateral Renal Agenesis

Author

Maj. Gerald L. Levisay, John C. Holder, and Col. John W. Welgel

Subjects
Adult, Male, Ipsilateral renal agenesis, Cysts, business.industry, Seminal Vesicles, Anatomy, Kidney, medicine.disease, Congenital Abnormalities, Diagnosis, Differential, Radiography, Seminal vesicle, medicine.anatomical_structure, Humans, Medicine, Radiology, Nuclear Medicine and imaging, Ectopic ureter, Cyst, Genital Diseases, Male, Ureter, Differential diagnosis, business
Abstract

A case of an ectopic ureter entering a seminal vesicle cyst and associated with ipsilateral renal agenesis is presented. The differential diagnosis and the embryological explanation of the anomaly are considered.

Published
1975

4. Genomic mapping and survival prediction in glioblastoma: molecular subclassification strengthened by hemodynamic imaging biomarkers.

Author

Jain R, Poisson L, Narang J, Gutman D, Scarpace L, Hwang SN, Holder C, Wintermark M, Colen RR, Kirby J, Freymann J, Brat DJ, Jaffe C, and Mikkelsen T

Subjects
Brain Neoplasms blood supply, Brain Neoplasms pathology, Cerebrovascular Circulation, Contrast Media, Gadolinium DTPA, Gene Expression Regulation, Neoplastic, Genomics, Glioblastoma blood supply, Glioblastoma pathology, Hemodynamics, Humans, Image Interpretation, Computer-Assisted, Predictive Value of Tests, Proportional Hazards Models, Retrospective Studies, Survival Analysis, Biomarkers, Tumor analysis, Brain Neoplasms genetics, Brain Neoplasms mortality, Glioblastoma genetics, Glioblastoma mortality, Magnetic Resonance Imaging methods
Abstract

Purpose: To correlate tumor blood volume, measured by using dynamic susceptibility contrast material-enhanced T2*-weighted magnetic resonance (MR) perfusion studies, with patient survival and determine its association with molecular subclasses of glioblastoma (GBM)., Materials and Methods: This HIPAA-compliant retrospective study was approved by institutional review board. Fifty patients underwent dynamic susceptibility contrast-enhanced T2*-weighted MR perfusion studies and had gene expression data available from the Cancer Genome Atlas. Relative cerebral blood volume (rCBV) (maximum rCBV [rCBV(max)] and mean rCBV [rCBV(mean)]) of the contrast-enhanced lesion as well as rCBV of the nonenhanced lesion (rCBV(NEL)) were measured. Patients were subclassified according to the Verhaak and Phillips classification schemas, which are based on similarity to defined genomic expression signature. We correlated rCBV measures with the molecular subclasses as well as with patient overall survival by using Cox regression analysis., Results: No statistically significant differences were noted for rCBV(max), rCBV(mean) of contrast-enhanced lesion or rCBV(NEL) between the four Verhaak classes or the three Phillips classes. However, increased rCBV measures are associated with poor overall survival in GBM. The rCBV(max) (P = .0131) is the strongest predictor of overall survival regardless of potential confounders or molecular classification. Interestingly, including the Verhaak molecular GBM classification in the survival model clarifies the association of rCBV(mean) with patient overall survival (hazard ratio: 1.46, P = .0212) compared with rCBV(mean) alone (hazard ratio: 1.25, P = .1918). Phillips subclasses are not predictive of overall survival nor do they affect the predictive ability of rCBV measures on overall survival., Conclusion: The rCBV(max) measurements could be used to predict patient overall survival independent of the molecular subclasses of GBM; however, Verhaak classifiers provided additional information, suggesting that molecular markers could be used in combination with hemodynamic imaging biomarkers in the future., (RSNA, 2012)

Published
2013
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