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3161. Liver fibrosis: noninvasive diagnosis with double contrast material-enhanced MR imaging. (PubMed)

Liver fibrosis: noninvasive diagnosis with double contrast material-enhanced MR imaging. To retrospectively evaluate the accuracy of double contrast material-enhanced (hereafter double-enhanced) magnetic resonance (MR) imaging depiction of hepatic fibrosis, with histopathologic analysis findings as the reference standard.The institutional review board approved this HIPAA-compliant study and waived the requirement for informed consent. One hundred one patients (58 men, 43 women; mean age

2006 Radiology

3162. Distinguishing benign from malignant pulmonary nodules with helical chest CT in children with malignant solid tumors. (PubMed)

Distinguishing benign from malignant pulmonary nodules with helical chest CT in children with malignant solid tumors. To retrospectively assess whether computed tomographic (CT) findings can indicate the benign or malignant nature of pulmonary nodules in pediatric patients with malignant solid primary tumors.With institutional review board approval, waived parental and patient consent, and HIPAA compliance, the authors determined the incidence of malignancy among 81 pulmonary nodules that were

2006 Radiology

3163. CT screening for lung cancer: prevalence and incidence of mediastinal masses. (PubMed)

CT screening for lung cancer: prevalence and incidence of mediastinal masses. To determine the frequency and natural course of mediastinal masses in asymptomatic people at high risk for lung cancer who were undergoing computed tomographic (CT) screening.Informed consent and institutional review board approval for this HIPAA-compliant study were obtained at each participating institution. All documented mediastinal masses among the 9263 baseline and 11 126 annual repeat screenings performed

2006 Radiology

3164. Mild cognitive impairment: evaluation with 4-T functional MR imaging. (PubMed)

Mild cognitive impairment: evaluation with 4-T functional MR imaging. To prospectively assess abnormalities in brain activation patterns during encoding and retrieval in subjects with mild cognitive impairment by using 4-T functional magnetic resonance (MR) imaging.The institutional review board approved this HIPAA-compliant study; all subjects gave written informed consent. Twenty patients with mild cognitive impairment (12 men, eight women; mean age, 75.0 years +/- 7.6 [standard deviation

2006 Radiology

3165. Incidental pulmonary emboli in oncology patients: prevalence, CT evaluation, and natural history. (PubMed)

Incidental pulmonary emboli in oncology patients: prevalence, CT evaluation, and natural history. To retrospectively determine the prevalence and natural history of incidental pulmonary emboli in oncology patients, the number of such cases reported at initial thoracic computed tomographic (CT) image interpretation, and the factors that contribute to underdiagnosis.Institutional review board approval, which included HIPAA-compliant access to protected health information and waived patient

2006 Radiology

3166. Osteoporotic compression fractures: outcomes after single- versus multiple-level percutaneous vertebroplasty. (PubMed)

Osteoporotic compression fractures: outcomes after single- versus multiple-level percutaneous vertebroplasty. To compare single- and multiple-level percutaneous vertebroplasty (PV) in terms of pain relief, activity level, and analgesic use in patients with osteoporotic vertebral compression fractures (VCFs).Institutional review board approval and informed consent were obtained, and the study was HIPAA compliant. One hundred seventy-three patients (mean age at treatment, 73.8 years +/- 11.9

2006 Radiology

3167. Screening mammograms: interpretation with computer-aided detection--prospective evaluation. (PubMed)

Screening mammograms: interpretation with computer-aided detection--prospective evaluation. To prospectively determine the effect of a commercially available computer-aided detection (CAD) system on interpretations of screening mammograms.Institutional review board approval was granted; informed consent and HIPAA compliance were waived. A total of 21 349 screening mammograms obtained in 18 096 women were interpreted first without and then with review of CAD images to determine the effect of CAD

2006 Radiology

3168. Patients, privacy and trust: patients' willingness to allow researchers to access their medical records. (PubMed)

Patients, privacy and trust: patients' willingness to allow researchers to access their medical records. The federal Privacy Rule, implemented in the United States in 2003, as part of the Health Insurance Portability and Accountability Act of 1996 (HIPAA), created new restrictions on the release of medical information for research. Many believe that its restrictions have fallen disproportionately on researchers prompting some to call for changes to the Rule. Here we ask what patients think

2007 Social Science & Medicine

3169. Pulmonary hypertension: accuracy of detection with left ventricular septal-to-free wall curvature ratio measured at cardiac MR. (PubMed)

(RHC) as the reference standard.Institutional review board approval was received for this HIPAA-compliant study. Sixty-one patients clinically known or suspected of having PH underwent cardiac MR and RHC on the same day. Interventricular septal curvature (C(IVS)) and left ventricular free wall curvature (C(FW)) measured at end systole were used to derive the curvature ratio (C(IVS)/C(FW)). Effective distending transmural pressure (dP(FW)) and transseptal pressure gradient (dP(IVS)) were assumed

2007 Radiology

3170. Frequency, management, and outcome of extravasation of nonionic iodinated contrast medium in 69,657 intravenous injections. (PubMed)

Frequency, management, and outcome of extravasation of nonionic iodinated contrast medium in 69,657 intravenous injections. To determine retrospectively the frequency, management, and outcomes of extravasations of intravenously injected nonionic iodinated contrast medium.Institutional review board approval was obtained, and the requirement for informed consent was waived. The study was HIPAA compliant. For 69,657 intravenous injections of nonionic iodinated contrast medium for computed

2007 Radiology

3171. Vertebroplasty in the United States: guidance method and provider distribution, 2001-2003. (PubMed)

Vertebroplasty in the United States: guidance method and provider distribution, 2001-2003. To use the nationwide Medicare database to retrospectively evaluate the provider distribution for vertebroplasty, as well as the guidance method used in the United States.Use of the Medicare database was exempt from Institutional Review Board review and informed consent; regarding HIPAA compliance, the Medicare database lacks unique patient identifiers. Using the 2001, 2002, and 2003 United States

2007 Radiology

3172. Detection of bone metastases: assessment of integrated FDG PET/CT imaging. (PubMed)

Detection of bone metastases: assessment of integrated FDG PET/CT imaging. To retrospectively evaluate the positive predictive value (PPV) of fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) in the identification of malignant bone lesions when the PET and CT findings are discordant and concordant.The study conformed to HIPAA standards, and the need for informed consent was waived by the institutional review board that approved the study. FDG PET

2007 Radiology

3173. Three-dimensional black-blood MR imaging of carotid arteries with segmented steady-state free precession: initial experience. (PubMed)

Three-dimensional black-blood MR imaging of carotid arteries with segmented steady-state free precession: initial experience. This HIPAA-compliant study had institutional review board approval. Informed consent was obtained. The purpose was to prospectively evaluate a segmented three-dimensional (3D) double inversion recovery (DIR)-prepared steady-state free precession (SSFP) magnetic resonance (MR) imaging sequence for fast high-spatial-resolution black-blood carotid arterial wall imaging

2007 Radiology

3174. CT Screening for lung cancer: diagnoses resulting from the New York Early Lung Cancer Action Project. (PubMed)

CT Screening for lung cancer: diagnoses resulting from the New York Early Lung Cancer Action Project. To evaluate prospectively the diagnostic performance of the New York Early Lung Cancer Action Project (NY-ELCAP) regimen in the diagnosis of early lung cancer at baseline and annual repeat computed tomographic (CT) screenings.Informed consent and institutional review board approval were obtained for this HIPAA-compliant study of baseline and annual repeat low-dose CT screening performed

2007 Radiology

3175. Pulmonary radiofrequency ablation: long-term safety and efficacy in 153 patients. (PubMed)

Pulmonary radiofrequency ablation: long-term safety and efficacy in 153 patients. To retrospectively evaluate long-term survival, local tumor progression, and complication rates for all percutaneous computed tomographic (CT)-guided lung tumor radiofrequency (RF) ablations performed at a tertiary care cancer hospital in patients who refused or who were not candidates for surgery.This HIPAA-compliant study was approved by the institutional review board; informed consent was waived. Between 1998

2007 Radiology

3176. Electromagnetic breast imaging: results of a pilot study in women with abnormal mammograms. (PubMed)

Electromagnetic breast imaging: results of a pilot study in women with abnormal mammograms. To prospectively assess quantitatively the inherent contrast of electromagnetic (EM) properties that can be imaged by using available technology in women with abnormal findings at conventional breast imaging who underwent subsequent biopsy.The protocol was HIPAA compliant and approved by the institutional review board. All participants provided informed consent. Fifty-three women with normal (Breast

2007 Radiology

3177. Atypical chest pain: coronary, aortic, and pulmonary vasculature enhancement at biphasic single-injection 64-section CT angiography. (PubMed)

approval and HIPAA compliance, 50 patients (16 men, 34 women; mean age, 51.5 years; range, 30-75 years) with atypical chest pain were referred from the emergency department and were imaged with a 64-section CT scanner after premedication with oral atenolol and/or intravenous metoprolol. Thoracic CT angiography with retrospective gating was subsequently performed with a single biphasic injection of 130 mL of iso-osmolar contrast material (100 mL at 5 mL/sec and 30 mL at 3 mL/sec) in caudal-to-cranial

2007 Radiology

3178. Uterine leiomyomas: MR imaging-guided focused ultrasound surgery--results of different treatment protocols. (PubMed)

Uterine leiomyomas: MR imaging-guided focused ultrasound surgery--results of different treatment protocols. To prospectively assess patient response (after 12 months) to magnetic resonance (MR) imaging-guided focused ultrasound surgery in treatment of uterine leiomyomas by using two treatment protocols.This prospective clinical trial was approved by institutional review boards and was HIPAA compliant. After giving informed consent, patients with symptomatic leiomyomas were consecutively

2007 Radiology

3179. High-spatial-resolution contrast-enhanced MR angiography of the intracranial venous system with fourfold accelerated two-dimensional sensitivity encoding. (PubMed)

High-spatial-resolution contrast-enhanced MR angiography of the intracranial venous system with fourfold accelerated two-dimensional sensitivity encoding. Informed consent was obtained; the study was HIPAA compliant and institutional review board approved. Fourfold accelerated (FFA) two-dimensional (2D) sensitivity encoding (SENSE) (65 seconds) was prospectively compared with its nonaccelerated counterpart (4 minutes 20 seconds) for diagnostic image quality and sharpness of visualization

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2007 Radiology

3180. Breast cancer detection rate: designing imaging trials to demonstrate improvements. (PubMed)

, and perform analytic studies. This study was HIPAA compliant. The authors estimated the distribution of individual radiologists' breast cancer detection rates for 2,289,132 screening mammograms (9030 cancers) read by 510 radiologists in the United States who participated in the Breast Cancer Surveillance Consortium from 1996 through 2002. They then computed the distributions of breast cancer detection rates expected from a trial of screening mammography and multiple radiologists, as well as similar

2007 Radiology

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