Christopher C Riedl

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PURPOSE To evaluate iodine 124 (124I)-labeled iodoazomycin galactopyranoside (IAZGP) positron emission tomography (PET) in the detection of hypoxia in an orthotopic rat liver tumor model by comparing regions of high (124)I-IAZGP uptake with independent measures of hypoxia and to determine the optimal time after injection to depict hypoxia. MATERIALS AND(More)
PURPOSE To report the false-negative rate, sensitivity, and specificity of 14-gauge ultrasound-guided large-core needle biopsy (14-G USSB) performed on breast lesions at our institution and, furthermore, to compare and discuss our own results with those reported in the literature. MATERIALS AND METHODS This study includes 399 lesions examined by 14-G(More)
UNLABELLED (18)F-FDG PET has proven invaluable in the staging of patients with metastatic colorectal cancer. The aim of the current study was to determine whether this biologic scan would correlate with other cellular characteristics and the clinical behavior of tumors. METHODS Ninety patients with resectable colorectal cancer metastatic to the liver(More)
OBJECTIVES The aim of this study was to characterize benign and malignant breast lesions with computed tomography-laser mammography (CTLM). MATERIALS AND METHODS In a prospective study, 100 female patients with 105 breast lesions classified as BIRADS IV to V at mammography underwent mammography, CTLM, and histologic verification at our institution. CTLM(More)
OBJECTIVE The aim of our study was to determine the false-negative rate of stereotactic 11-gauge vacuum-assisted biopsy in a validation study of lesions that had subsequent surgical excision. MATERIALS AND METHODS Retrospective review was performed of 318 lesions that underwent stereotactic 11-gauge vacuum-assisted biopsy and subsequent surgical excision.(More)
OBJECTIVES We sought to prospectively assess the value of electrical impedance scanning (EIS) in discriminating benign from malignant lesions classified as BI-RADS category IV in mammography in comparison with ultrasound (US), with a special focus on negative prediction. MATERIALS AND METHODS EIS was performed on 128 BI-RADS category IV lesions in 121(More)
PURPOSE To evaluate the breast cancer screening efficacy of mammography, ultrasound, and magnetic resonance imaging (MRI) in a high-risk population and in various population subgroups. PATIENTS AND METHODS In a single-center, prospective, nonrandomized comparison study, BRCA mutation carriers and women with a high familial risk (> 20% lifetime risk) for(More)
National Comprehensive Cancer Network guidelines recommend 18F-FDG-PET/CT, in addition to standard staging procedures, for systemic staging of newly diagnosed stage III breast cancer patients. However, factors in addition to stage may influence PET/CT utility. As breast cancers that are negative for estrogen receptor, progesterone receptor, and human(More)
OBJECTIVE To compare image quality, the lesion detection, and the diagnostic efficacy of full-field digital mammography (FFDM) and computed radiography-based mammography using digital storage phosphor plates (DSPM) in the evaluation of breast lesions. MATERIALS AND METHODS In this prospective study, 150 patients with suspicious breast lesions underwent(More)
To assess the effect of interactive dedicated training on radiology fellows’ accuracy in assessing prostate cancer on MRI. Eleven radiology fellows, blinded to clinical and pathological data, independently interpreted preoperative prostate MRI studies, scoring the likelihood of tumour in the peripheral and transition zones and extracapsular extension. Each(More)