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3061. MR imaging evaluation of acute appendicitis in pregnancy. Full Text available with Trip Pro

MR imaging evaluation of acute appendicitis in pregnancy. To retrospectively assess the diagnostic performance of magnetic resonance (MR) imaging in pregnant patients suspected of having acute appendicitis.The study was approved by the committee on clinical investigations and was HIPAA compliant. The informed consent requirement was waived. MR images were obtained in 51 consecutive pregnant patients (mean age, 28.3 years) who were clinically suspected of having acute appendicitis

2006 Radiology

3062. Adrenal lesions: characterization with fused PET/CT image in patients with proved or suspected malignancy--initial experience. Full Text available with Trip Pro

Adrenal lesions: characterization with fused PET/CT image in patients with proved or suspected malignancy--initial experience. To retrospectively evaluate the accuracy of the fused positron emission tomographic (PET)/computed tomographic (CT) image for characterization of adrenal lesions in patients who have proved malignancy or are suspected of having malignancy.Institutional review board approval was received for this retrospective HIPAA-compliant study, and informed consent was waived. Forty

2006 Radiology

3063. PET with FDG-labeled leukocytes versus scintigraphy with 111In-oxine-labeled leukocytes for detection of infection. (Abstract)

PET with FDG-labeled leukocytes versus scintigraphy with 111In-oxine-labeled leukocytes for detection of infection. To compare prospectively the accuracy of positron emission tomography (PET) with leukocytes labeled in vitro with (18)F fluorodeoxyglucose (FDG) versus that of conventional scintigraphy with leukocytes labeled in vitro with (111)In oxine in patients suspected of having infection.This HIPAA-compliant study had institutional review board approval; informed consent was obtained from

2006 Radiology

3064. Radiofrequency ablation of liver tumors: a new cause of benign portal venous gas. (Abstract)

Radiofrequency ablation of liver tumors: a new cause of benign portal venous gas. To retrospectively describe and categorize the presence of portal venous gas (PVG) from radiofrequency (RF) ablation of hepatic tumors.The study was HIPAA compliant, and informed consent was waived. Thirty-four consecutive computed tomography (CT)-guided percutaneous RF ablations of liver tumors in 26 patients (13 men, 13 women; mean age, 69 years) with five hepatocellular carcinomas and 21 metastatic liver tumors

2005 Radiology

3065. Abdominal pain: coronal reformations from isotropic voxels with 16-section CT--reader lesion detection and interpretation time. (Abstract)

Abdominal pain: coronal reformations from isotropic voxels with 16-section CT--reader lesion detection and interpretation time. To retrospectively assess if reader detection of intraabdominal pathologic findings on coronal reformations from isotropic voxels at 16-section computed tomography (CT) was similar to reader detection on transverse scans.The institutional review board approved this HIPAA-compliant study, and a waiver of informed consent was obtained. Twenty-nine consecutive patients

2007 Radiology

3066. Clinical predictors of metastatic disease to the brain from non-small cell lung carcinoma: primary tumor size, cell type, and lymph node metastases. (Abstract)

Clinical predictors of metastatic disease to the brain from non-small cell lung carcinoma: primary tumor size, cell type, and lymph node metastases. To retrospectively assess possible clinical predictors of metastatic disease to the brain in patients with non-small cell lung carcinoma (NSCLC).Institutional review board approval was obtained, informed consent was waived, and data and other information were obtained prior to implementation of HIPAA. A review was performed of 264 patients (mean

2007 Radiology

3067. Renal involvement in patients with autoimmune pancreatitis: CT and MR imaging findings. (Abstract)

Renal involvement in patients with autoimmune pancreatitis: CT and MR imaging findings. To retrospectively evaluate computed tomographic (CT) and magnetic resonance (MR) imaging renal findings at clinical presentation, during treatment, and at follow-up in patients with autoimmune pancreatitis (AIP).This HIPAA-compliant study received institutional review board approval. All patients included had previously consented to the use of their medical records for the purpose of research. Forty-five

2007 Radiology

3068. Total and intraabdominal fat distribution in preadolescents and adolescents: measurement with MR imaging. (Abstract)

Total and intraabdominal fat distribution in preadolescents and adolescents: measurement with MR imaging. To prospectively correlate single- and multisection magnetic resonance (MR) imaging measurements with clinical measurements for assessment of abdominal adipose tissue volumes in healthy (control subjects), overweight, and diabetic overweight preadolescents and adolescents.The study was approved by the institutional internal review board and was HIPAA compliant. Informed consent was obtained

2007 Radiology

3069. Use of microcalcification descriptors in BI-RADS 4th edition to stratify risk of malignancy. Full Text available with Trip Pro

Use of microcalcification descriptors in BI-RADS 4th edition to stratify risk of malignancy. To retrospectively evaluate whether microcalcification descriptors and the categorization of microcalcification descriptors in the Breast Imaging Reporting and Data System (BI-RADS) 4th edition help stratify the risk of malignancy, by using biopsy and clinical follow-up as reference standards.The institutional review board approved this HIPAA-compliant study and waived informed consent. The study

2007 Radiology

3070. Holistic component of image perception in mammogram interpretation: gaze-tracking study. (Abstract)

Holistic component of image perception in mammogram interpretation: gaze-tracking study. To test the hypothesis that rapid and accurate performance of the proficient observer in mammogram interpretation involves a shift in the mechanism of image perception from a relatively slow search-to-find mode to a relatively fast holistic mode.This HIPAA-compliant study had institutional review board approval, and participant informed consent was obtained; patient informed consent was not required

2007 Radiology

3071. Liver fat: effect of hepatic iron deposition on evaluation with opposed-phase MR imaging. (Abstract)

Liver fat: effect of hepatic iron deposition on evaluation with opposed-phase MR imaging. To retrospectively determine the effect of liver iron deposition on the evaluation of liver fat by using opposed-phase magnetic resonance (MR) imaging.Committee on Human Research approval was obtained, and compliance with HIPAA regulations was observed. Patient consent was waived by the committee. Thirty-eight patients with cirrhosis (30 men, eight women; mean age, 58 years; range, 34-76 years) who

2007 Radiology

3072. Five-year lung cancer screening experience: CT appearance, growth rate, location, and histologic features of 61 lung cancers. Full Text available with Trip Pro

approved and HIPAA compliant. Informed consent was waived. CT scans of 61 cancers (24 in men, 37 in women; age range, 53-79 years; mean, 65 years) were retrospectively reviewed for cancer size, morphology, and location. Forty-eight cancers were assessed for morphologic change and volume doubling time (VDT), which was calculated by using a modified Schwartz equation. Histologic sections were retrospectively reviewed.Mean tumor size was 16.4 mm (range, 5.5-52.5 mm). Most common CT morphologic features

2007 Radiology

3073. Effect of patient weight and scanning duration on contrast enhancement during pulmonary multidetector CT angiography. (Abstract)

Effect of patient weight and scanning duration on contrast enhancement during pulmonary multidetector CT angiography. To retrospectively evaluate the amount of contrast medium required with 16- and 64-section computed tomography (CT) for a given patient weight to achieve desirable contrast enhancement during pulmonary CT angiography.Institutional review board approval was obtained, and informed consent was not required for this HIPAA-compliant study. Eighty-five patients (35 men, 50 women

2007 Radiology

3074. Evaluation of vascular complications of pancreas transplantation with high-spatial-resolution contrast-enhanced MR angiography. (Abstract)

of an anonymous-subject database. The study was HIPAA compliant. The clinical and MR angiography findings in 11 patients (eight men, three women; mean age, 43 years; age range, 30-54 years) who had a history of pancreatic transplant dysfunction and underwent a total of 13 contrast-enhanced 3D MR angiography examinations were retrospectively reviewed. Comparison with conventional angiography findings was possible for four MR angiography examinations, comparison with surgical findings was possible for two

2007 Radiology

3075. Supraaortic arteries: contrast-enhanced MR angiography at 3.0 T--highly accelerated parallel acquisition for improved spatial resolution over an extended field of view. (Abstract)

were obtained for this HIPAA-compliant study. Eighty patients (44 men, 36 women; age range, 44-90 years) underwent contrast-enhanced MR angiography of the head and neck at 3.0 T with an eight-channel neurovascular array coil. By applying a generalized autocalibrating partially parallel acquisition algorithm with an acceleration factor of four, high-spatial-resolution (0.7 x 0.7 x 0.9 mm = 0.44-mm(3) voxels) three-dimensional contrast-enhanced MR angiography was performed during a 20-second breath

2007 Radiology

3076. Nephrogenic systemic fibrosis: risk factors and incidence estimation. (Abstract)

Nephrogenic systemic fibrosis: risk factors and incidence estimation. To retrospectively review data in 13 patients with biopsy-confirmed nephrogenic systemic fibrosis (NSF), assess the associated risk factors, and report the incidence of NSF at the authors' institution.This HIPAA-compliant study had institutional review board approval; informed consent was waived. Statistical analysis was performed for all available clinical and laboratory data in patients with biopsy-confirmed NSF. The data

2007 Radiology

3077. Blunt splenic trauma: delayed-phase CT for differentiation of active hemorrhage from contained vascular injury in patients. (Abstract)

Blunt splenic trauma: delayed-phase CT for differentiation of active hemorrhage from contained vascular injury in patients. To retrospectively evaluate delayed-phase computed tomography (CT) in the differentiation of active splenic hemorrhage requiring emergent treatment from contained vascular injuries (pseudoaneurysms or arteriovenous fistulas) that can be treated electively or managed conservatively.The institutional review board approved this HIPAA-compliant retrospective study

2007 Radiology

3078. Solid renal cortical tumors: differentiation with CT. (Abstract)

Solid renal cortical tumors: differentiation with CT. To retrospectively determine if solid renal cortical tumors can be differentiated on computed tomographic (CT) images on the basis of their morphologic features and enhancement patterns.Institutional review board approval was obtained and the informed consent requirement was waived for this HIPAA-compliant study. Between January 2004 and September 2005, 193 consecutive patients (age range, 19-95 years; 112 men, 81 women) with renal masses

2007 Radiology

3079. Semiautomated MIP images created directly on 16-section multidetector CT console for evaluation of living renal donors. (Abstract)

Semiautomated MIP images created directly on 16-section multidetector CT console for evaluation of living renal donors. Institutional Review Board approval was obtained and informed consent was waived for this HIPAA-compliant study. The aim of this study was to retrospectively compare the accuracy of semiautomated maximum intensity projection (MIP) images created at a 16-section multidetector CT console with three-dimensional (3D)-workstation-generated images for the definition of renal donor

2007 Radiology

3080. Chronic hypersensitivity pneumonitis: CT features comparison with pathologic evidence of fibrosis and survival. (Abstract)

, which was HIPAA compliant. Twenty-six patients (15 women, 11 men; age range, 37-76 years) with chronic HP had their surgical lung biopsy results reviewed by two pathologists for the presence of fibrosis. Two radiologists systematically reviewed the CT scans. The two radiologists were blinded to all clinical information, including pathologic diagnosis, patient information, and outcomes. The combination of a subpleural reticular pattern and lower zone predominance was considered a UIP pattern. CT

2007 Radiology

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