Publications by authors named "M Polger"
Rationale And Objectives: The authors evaluated the ability of observers to identify simulated nodules placed electronically on normal contrast material-enhanced computed tomography (CT) scans of the liver to assess the effect of nodule size and polarity on detection and localization.
Methods: Seven readers evaluated two sets of CT scans that contained 80 stimuli each. The simulated nodules were either darker or brighter than the contrast-enhanced liver and were 5.
Purpose: A nomogram for hepatic spiral CT (SCT) was constructed based on randomization of patients into a prospective study using four different injection protocols. Its utility in a separate prospective randomized trial was subsequently evaluated in a new group of patients.
Methods: Thirty-nine patients randomized into four groups underwent SCT (Somatom-Plus S; 24 s exposure, 10 mm collimation, 10 mm/s) using 90 ml Omnipaque 240 (22 g I) at 2.
Objective: Because hyperechoic renal masses may represent angiomyolipomas or small renal cancers, CT is often used to reveal the fatty component, which allows diagnosis of angiomyolipoma in most cases. Because conventional CT can fail to reveal fat in angiomyolipomas 3 cm or smaller, we conducted a study to determine whether helical CT would improve our detection of fat and allow more of these masses to be diagnosed as angiomyolipomas.
Subjects And Methods: We used helical and conventional CT to examine 20 masses (5-29 mm in diameter) in 17 patients who had a small hyperechoic mass detected sonographically.
Objective: In our institution for the past 4 years, stereotaxic core breast biopsy using a 14-gauge needle has been offered as an alternative to surgical excision. The purpose of this paper is to describe our protocol, results, and lessons learned from our experience.
Materials And Methods: From August 1991 to July 1995, 388 stereotaxic needle core biopsies of clinically occult, noncalcified, mammographically detected solid masses were performed.
Pseudoangiomatous stromal hyperplasia: mammographic and sonographic appearances.
AJR Am J Roentgenol
February 1996
Objective: Pseudoangiomatous stromal hyperplasia is a benign, localized form of stromal overgrowth with a probable hormonal etiology. Our purpose is to describe the mammographic, sonographic, and clinical features of this entity.
Materials And Methods: A retrospective review of breast imaging studies and demographic information for seven patients identified as having pseudoangiomatous stromal hyperplasia was performed.