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103 results on '"Hecht, S."'

5. GADOXETATE DISODIUM (GD-EOB-DTPA) CONTRAST ENHANCED MAGNETIC RESONANCE IMAGING CHARACTERISTICS OF HEPATOCELLULAR CARCINOMA IN DOGS

Author

Constant, C, Hecht, S, Craig, LE, Lux, CN, Cannon, CM, Conklin, GA, Constant, C, Hecht, S, Craig, LE, Lux, CN, Cannon, CM, and Conklin, GA

Abstract

Hepatocellular carcinoma is the most common primary hepatic tumor in dogs and is amenable to surgical resection in many cases. Unfortunately, overlap of sonographic findings between benign and malignant hepatic lesions typically requires more invasive diagnostic tests to be performed (e.g., biopsy for histopathology). The availability of a noninvasive diagnostic test to identify hepatocellular carcinoma would be beneficial. The use of a liver-specific magnetic resonance imaging (MRI) contrast agent such as gadoxetate disodium (Gd-EOB-DTPA; Eovist® or Primovist®) has improved lesion detection in human patients. In this descriptive study, gadoxetate disodium contrast-enhanced MRI characteristics in dogs were evaluated in seven dogs (total of eight lesions). The imaging characteristics were variable with the exception of all lesions being hypointense to surrounding normal hepatic parenchyma on 3D T1-weighted gradient recalled echo images at all postcontrast time points. All lesions displayed signal intensity ratios less than 1, consistent with retained but impaired hepatocyte function. Hepatic lesions not identified on previous imaging were found in 3/7 patients which may affect surgical planning. In two patients, several hepatic nodules were identified during surgery which had not been visualized on MRI and were found to be benign on histopathology. This descriptive study reports the MRI characteristics of hepatocellular carcinoma in dogs using the liver-specific contrast agent gadoxetate disodium.

Published
2016

26. A measure of attitudes toward abortion

Author

Hecht S. Lackey and John R. Barry

Subjects
Social Psychology, Family planning, Scale (social sciences), Concurrent validity, Marital status, Conviction, Abortion, Construct (philosophy), Psychology, Reliability (statistics), Developmental psychology
Abstract

An effort was made to construct an effective questionnaire for examining group and individual differences in attitudes toward abortion in view of the fact that most studies on abortion are based on responses to instruments of questionable reliability which often reflect the bias of the reporter. From an initial pool of 100 statement items about abortion and related topics the questionnaire after a testing was whittled down to 55 items. 9 were from inventories used in previous studies; 5 were information items and 5 were lie scale pairs. Reliability was determined by comparing the first 27 with the last 28 items. A Pearsonian correlation coefficient of .90 was obtained. Groups were selected to reflect the variables of education age and marital status all of which have been shown to influence attitudes toward abortion. Accordingly the questionnaire was administered to a group of unmarried students assembly-line workers and physicians wives. As was expected a younger age higher cultural level lack of religious conviction and positive marital status werw associated with a more favorable attitude toward abortion. When the 9 items used in previous studies were correlated with responses to the new items a correlation coefficient of .48 was obtained indicating concurrent validity.

Published
1973
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