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3201. Clinical breast examination in a comprehensive breast cancer screening program: contribution and cost. (Abstract)

Clinical breast examination in a comprehensive breast cancer screening program: contribution and cost. To retrospectively evaluate the cost of clinical breast examination (CBE) and its contribution to screening mammography in the detection of breast cancer.The study received a waiver of authorization from the institutional review board, informed patient consent was not required, and the study was compliant with HIPAA regulations. The records of 60 027 consecutive asymptomatic patients who

2006 Radiology

3202. Multi-detector row CT urography of normal urinary collecting system: furosemide versus saline as adjunct to contrast medium. (Abstract)

for this HIPAA-compliant study. Excretory phase images from multi-detector row CT urography in 87 patients (44 women, 43 men; age range, 21-83 years; mean, 53 years) were reviewed. Examinations were performed with, in addition to intravenous contrast medium, 250 mL of intravenous normal saline alone (n = 35), both 250 mL of normal saline and 10 mg of intravenous furosemide (n = 26), or 10 mg of furosemide alone (n = 26). Three readers, blinded to the imaging technique used, individually assigned

2006 Radiology

3203. Dobutamine response and myocardial infarct transmurality: functional improvement after coronary artery bypass grafting--initial experience. (Abstract)

Dobutamine response and myocardial infarct transmurality: functional improvement after coronary artery bypass grafting--initial experience. The Investigational Review Board approved the protocol, and all patients provided signed informed consent. The protocol was compliant with HIPAA. The purpose of the study was to prospectively test the hypothesis that addition of low-dose dobutamine and quantification of inotropic reserve in segments with 1%-50% infarct transmurality (IT) would improve

2006 Radiology

3204. Orthopedic spinal and hip prostheses: effects of magnetic susceptibility artifacts during MR arteriography and venography of abdomen and pelvis. (Abstract)

waived the requirement for informed consent and deemed the study to be HIPAA compliant. Forty-two contrast material-enhanced MR angiographic examinations were performed by using a 1.5-T imager in 41 patients (16 men, 25 women; mean age, 57 years; range, 36-79 years); 33 of these examinations included both MR arteriographic and MR venographic components. On the basis of resolution, images for which more than 3 mm of vessels were affected by susceptibility artifacts were considered uninterpretable

2006 Radiology

3205. Right lower quadrant pain: value of the nonvisualized appendix in patients at multidetector CT. (Abstract)

Right lower quadrant pain: value of the nonvisualized appendix in patients at multidetector CT. To retrospectively determine the value of the nonvisualized appendix at multidetector computed tomography (CT) in patients with acute right lower quadrant pain in whom appendicitis was a consideration.Institutional review board approval was obtained for this HIPAA-compliant study, with waiver of informed consent. Records were retrospectively reviewed in patients who presented to the emergency

2006 Radiology

3206. Liver metastases: 3D shape-based analysis of CT scans for detection of local recurrence after radiofrequency ablation. (Abstract)

Liver metastases: 3D shape-based analysis of CT scans for detection of local recurrence after radiofrequency ablation. This HIPAA-compliant pilot study had internal review board approval; informed consent was waived. The purpose was to determine retrospectively the diagnostic performance of a computer-aided three-dimensional (3D) analytic tool for assessing local recurrences of liver metastases by quantifying shape changes in ablated tumors on computed tomographic (CT) scans for follow-up

2006 Radiology

3207. Inflammation in carotid atherosclerotic plaque: a dynamic contrast-enhanced MR imaging study. Full Text available with Trip Pro

Inflammation in carotid atherosclerotic plaque: a dynamic contrast-enhanced MR imaging study. To prospectively evaluate if there is an association between plaque enhancement at magnetic resonance (MR) imaging and proinflammatory cardiovascular risk factors and plaque content.This study was performed with informed consent, HIPAA compliance, and institutional review board approval. Contrast agent dynamics within carotid plaques were measured in 30 patients (29 men, one woman; mean age, 67.7 years

2006 Radiology

3208. Screening for colorectal neoplasia with CT colonography: initial experience from the 1st year of coverage by third-party payers. (Abstract)

Screening for colorectal neoplasia with CT colonography: initial experience from the 1st year of coverage by third-party payers. To evaluate our experience in the 1st year of computed tomographic (CT) colonography screening since the initiation of local third-party payer coverage.This HIPAA-compliant study was approved by the institutional review board, and informed consent was waived. Over a 1-year period that ended on April 27, 2005, 1110 consecutive adults (585 women, 525 men; mean age, 58.1

2006 Radiology

3209. Effects of surgical ventricular restoration on left ventricular function: dynamic MR imaging. (Abstract)

informed consent was obtained. The study was HIPAA compliant. Patients (83 men, 22 women; mean age, 61 years +/- 9 [standard deviation]) were evaluated with MR imaging before and after SVR as follows: pre-SVR examination (n = 105; 25 days +/- 39 before SVR; median, 7 days; range, 1-189 days), early post-SVR examination (n = 95, 7 days +/- 3 after SVR), and late post-SVR (n = 35, 313 days +/- 158 after SVR). Cine MR imaging allowed calculation of ejection fraction and rate-corrected velocity

2006 Radiology

3210. CT of small-bowel ischemia associated with obstruction in emergency department patients: diagnostic performance evaluation. (Abstract)

CT of small-bowel ischemia associated with obstruction in emergency department patients: diagnostic performance evaluation. To retrospectively evaluate the diagnostic performance of computed tomography (CT) for detection of small-bowel ischemia in emergency department patients with abdominal pain and to compare the prospective interpretation with a retrospective interpretation by using surgical or pathologic findings as the reference standard.The HIPAA-compliant study was approved

2006 Radiology

3211. Perforated versus nonperforated acute appendicitis: accuracy of multidetector CT detection. (Abstract)

Perforated versus nonperforated acute appendicitis: accuracy of multidetector CT detection. To retrospectively evaluate the accuracy of multidetector computed tomography (CT) in the diagnosis of perforated acute appendicitis by using surgery and pathologic examination combined as the reference standard.The study was institutional review board approved and HIPAA compliant. Informed patient consent was waived. The authors retrospectively identified 244 patients (150 male, 94 female; mean age

2006 Radiology

3212. Polyps: linear and volumetric measurement at CT colonography. (Abstract)

Polyps: linear and volumetric measurement at CT colonography. To retrospectively determine which of several computed tomographic (CT) colonography-based polyp measurements is most compatible with the linear measurement at optical colonoscopy and which is best for assessing change in polyp size.This HIPAA-compliant study had institutional review board approval; informed consent was obtained. Prone and supine CT colonography with same-day optical colonoscopy was performed in 216 patients (147 men

2006 Radiology

3213. Lung cancer: computerized quantification of tumor response--initial results. (Abstract)

Lung cancer: computerized quantification of tumor response--initial results. To prospectively quantify tumor response or progression in patients with lung cancer by using thin-section computed tomography (CT) and a semiautomated algorithm to calculate tumor volume and other parameter values.This HIPAA-compliant study was institutional review board approved; informed patient consent was waived. CT scans of 15 measurable non-small cell lung cancers (in five men and 10 women; mean age, 64 years

2006 Radiology

3214. High-grade prostatic intraepithelial neoplasia in patients with prostate cancer: MR and MR spectroscopic imaging features--initial experience. (Abstract)

High-grade prostatic intraepithelial neoplasia in patients with prostate cancer: MR and MR spectroscopic imaging features--initial experience. To retrospectively determine the magnetic resonance (MR) and MR spectroscopic imaging features of high-grade prostatic intraepithelial neoplasia (HGPIN) in patients with prostate cancer.Approval of the committee on human research was obtained, with a waiver of consent for this HIPAA-compliant study. Endorectal MR imaging and MR spectroscopic imaging were

2007 Radiology

3215. Intracranial hemorrhage in asymptomatic neonates: prevalence on MR images and relationship to obstetric and neonatal risk factors. Full Text available with Trip Pro

Intracranial hemorrhage in asymptomatic neonates: prevalence on MR images and relationship to obstetric and neonatal risk factors. To retrospectively evaluate the prevalence of neonatal intracranial hemorrhage (ICH) and its relationship to obstetric and neonatal risk factors.Pregnant women were recruited for a prospective study of neonatal brain development; the study was approved by the institutional review board and complied with HIPAA regulations. After informed consent was obtained from

2007 Radiology

3216. Hepatocellular carcinoma in the cirrhotic liver: gadolinium-enhanced 3D T1-weighted MR imaging as a stand-alone sequence for diagnosis. (Abstract)

Hepatocellular carcinoma in the cirrhotic liver: gadolinium-enhanced 3D T1-weighted MR imaging as a stand-alone sequence for diagnosis. To retrospectively assess the usefulness of contrast material-enhanced T1-weighted magnetic resonance (MR) imaging alone and with T2-weighted MR imaging in the diagnosis of hepatocellular carcinoma (HCC).A waiver of informed consent and institutional review board approval for this retrospective study were granted. The study was HIPAA compliant. Twenty-eight men

2006 Radiology

3217. Supratentorial low-grade glioma resectability: statistical predictive analysis based on anatomic MR features and tumor characteristics. Full Text available with Trip Pro

Supratentorial low-grade glioma resectability: statistical predictive analysis based on anatomic MR features and tumor characteristics. To retrospectively assess the main variables that affect the complete magnetic resonance (MR) imaging-guided resection of supratentorial low-grade gliomas.Institutional review board approval was obtained for this retrospective HIPAA-compliant study, with the requirement for informed consent waived. Data from 101 patients (61 men, 40 women; mean age, 39 years

2006 Radiology

3218. Distinguishing benign from malignant pulmonary nodules with helical chest CT in children with malignant solid tumors. (Abstract)

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

3219. CT screening for lung cancer: prevalence and incidence of mediastinal masses. (Abstract)

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

3220. Mild cognitive impairment: evaluation with 4-T functional MR imaging. (Abstract)

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

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