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3061. Tumor cavitation in stage I non-small cell lung cancer: epidermal growth factor receptor expression and prediction of poor outcome. (PubMed)

Tumor cavitation in stage I non-small cell lung cancer: epidermal growth factor receptor expression and prediction of poor outcome. To retrospectively identify radiographic characteristics of stage I non-small cell lung cancer (NSCLC) that may correlate with epidermal growth factor receptor (EGFR) or HER2 expression or with prognosis.This study was approved by the institutional review board, with waiver of informed consent, and was in compliance with HIPAA regulations. Findings of chest

2005 Radiology

3062. Lumbar radiculopathy: treatment with selective lumbar nerve blocks--comparison of effectiveness of triamcinolone and betamethasone injectable suspensions. (PubMed)

by the institutional review board and was HIPAA compliant; informed consent was not required. Charts and self-reported pain score evaluations were retrospectively reviewed in 114 patients (56 men, 58 women; age range, 36-84 years; mean age, 60 years) treated for radiculopathy from 1997 to 2003 with 130 selective lumbar nerve blocks with triamcinolone or betamethasone. Perineural location was confirmed with fluoroscopic guidance. Forty-nine patients received a mixture of 1 mL of the triamcinolone, 40 mg/mL, and 1

2005 Radiology

3063. Hepatic fat fraction: MR imaging for quantitative measurement and display--early experience. (PubMed)

Hepatic fat fraction: MR imaging for quantitative measurement and display--early experience. The institutional review board approved this HIPAA-compliant study. After all five patients with nonalcoholic fatty liver disease signed a consent, they underwent magnetic resonance (MR) imaging for hepatic fat quantification. The purpose of this study was to develop a fast and accurate method to acquire and display quantitative maps of the percentage of hepatic fat. In-phase and out-of-phase gradient

2005 Radiology

3064. Computer-aided detection system for breast masses on digital tomosynthesis mammograms: preliminary experience. (PubMed)

of the data set in this study was HIPAA compliant. The CAD system first screened the three-dimensional volume of the mass candidates by means of gradient-field analysis. Each mass candidate was segmented from the structured background, and its image features were extracted. A feature classifier was designed to differentiate true masses from normal tissues. The CAD system was trained and tested by using a leave-one-case-out method. The classifier calculated a mean area under the test receiver operating

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2005 Radiology

3065. Duodenal carcinoids: imaging features with clinical-pathologic comparison. (PubMed)

Duodenal carcinoids: imaging features with clinical-pathologic comparison. To retrospectively evaluate the imaging features of duodenal carcinoids with clinical-pathologic comparison.The institutional review board approved this study; informed consent was not required. The study was HIPAA compliant. The authors retrospectively reviewed the barium studies (n = 20), computed tomographic (CT) scans (n = 16), magnetic resonance (MR) images (n = 2), pathology reports (n = 33), gross pathology

2005 Radiology

3066. Automated detection of pulmonary nodules on CT images: effect of section thickness and reconstruction interval--initial results. (PubMed)

Automated detection of pulmonary nodules on CT images: effect of section thickness and reconstruction interval--initial results. Institutional review board approval was obtained. Informed patient consent was not required. Study was compliant with HIPAA. Performance of an automated pulmonary nodule detection program was evaluated on multi-detector row CT images that were acquired once but reconstructed retrospectively at different section thicknesses and reconstruction intervals. From raw CT

2005 Radiology

3067. Type B Niemann-Pick disease: findings at chest radiography, thin-section CT, and pulmonary function testing. (PubMed)

Type B Niemann-Pick disease: findings at chest radiography, thin-section CT, and pulmonary function testing. To evaluate findings at radiography, computed tomography (CT), and pulmonary function testing in patients with type B Niemann-Pick disease.The study was approved by the institutional review board or ethics committee at each study site and was compliant with HIPAA at the U.S. site. Written informed consent was obtained from each patient or guardian and minor assent was obtained from all

2006 Radiology

3068. MR imaging-guided 9-gauge vacuum-assisted core-needle breast biopsy: initial experience. (PubMed)

MR imaging-guided 9-gauge vacuum-assisted core-needle breast biopsy: initial experience. To perform magnetic resonance (MR) imaging-compatible vacuum-assisted 9-gauge core-needle biopsy of suspicious enhancing breast lesions identified at MR imaging.The institutional review board granted exempt status for this HIPAA-compliant study and waived the requirement for informed consent. The MR imaging-guided 9-gauge vacuum-assisted core-needle biopsy findings of 85 lesions in 75 patients aged 31-89

2006 Radiology

3069. Responsible conduct of radiology research. Part V. The Health Insurance Portability and Accountability Act and research. (PubMed)

of this fifth part of the series is to explain the requirements of the Privacy Rule, which is a component of the Health Insurance Portability and Accountability Act (HIPAA), as they relate to human research. Under the HIPAA Privacy Rule, researchers within covered entities must follow appropriate methods as they use or disclose protected health information (PHI). Investigators should know the conditions under which PHI may be accessed for research purposes (ie, with authorization or waiver of authorization

2005 Radiology

3070. Reproducibility of functional MR imaging: preliminary results of prospective multi-institutional study performed by Biomedical Informatics Research Network. (PubMed)

participating sites approved this HIPAA-compliant study. All subjects gave informed consent. Functional MR imaging data were repeatedly acquired from five healthy men aged 20-29 years who performed the same SM task at 10 sites. Five 1.5-T MR imaging units, four 3.0-T units, and one 4.0-T unit were used. The subjects performed bilateral finger tapping on button boxes with a 3-Hz audio cue and a reversing checkerboard. In a block design, 15-second epochs of alternating baseline and tasks yielded 85

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2005 Radiology

3071. Robustness of computerized lesion detection and classification scheme across different breast US platforms. (PubMed)

Robustness of computerized lesion detection and classification scheme across different breast US platforms. To evaluate the performance of a computerized detection and diagnosis method with breast ultrasonographic (US) images obtained with US equipment from two different manufacturers.Two independent clinical breast US databases were used in this performance study. Data collection and database use were HIPAA-compliant and followed institutional review board-approved protocols, with waiver

2005 Radiology

3072. Direct comparison of FDG PET and CT findings in patients with lymphoma: initial experience. (PubMed)

retrospective review of cancer PET database, and informed consent was waived. The study was HIPAA compliant. Fifty-three patients with lymphoma (20 Hodgkin and 33 non-Hodgkin; mean age, 43 years; range, 12-83 years) who underwent FDG PET/CT were included. The PET and CT images were interpreted by two nuclear medicine physicians and one radiologist, respectively, blinded to the other imaging findings. Concordant PET and CT findings were regarded as positive or negative for lymphoma. The site with discordant

2005 Radiology

3073. Image-guided percutaneous radiofrequency ablation and incidence of post-radiofrequency ablation syndrome: prospective survey. (PubMed)

Image-guided percutaneous radiofrequency ablation and incidence of post-radiofrequency ablation syndrome: prospective survey. To evaluate prospectively the incidence of post-radiofrequency (RF) ablation syndrome and determine its impact on the quality of life in the 10 days after percutaneous RF ablation.This study was approved by the institutional review board and was HIPAA compliant. Informed consent was obtained for this survey in all patients by the interventional nurse coordinators. Thirty

2005 Radiology

3074. Prediction of organ-confined prostate cancer: incremental value of MR imaging and MR spectroscopic imaging to staging nomograms. (PubMed)

Prediction of organ-confined prostate cancer: incremental value of MR imaging and MR spectroscopic imaging to staging nomograms. To assess retrospectively the incremental value of endorectal coil magnetic resonance (MR) imaging and combined endorectal MR imaging-MR spectroscopic imaging to the staging nomograms for predicting organ-confined prostate cancer (OCPC).The institutional review board approved this HIPAA-compliant study and issued a waiver of informed consent for review of the MR

2006 Radiology

3075. Simulation of liver lesions for pediatric CT. (PubMed)

Simulation of liver lesions for pediatric CT. To develop and validate a technique based on characteristics of real lesions for simulating realistic small liver lesions on pediatric computed tomographic (CT) images.The institutional review board provided exempt status for this study, determined that it was not subject to HIPAA compliance, and did not require informed consent. Patient identification information was removed from clinical images from contrast material-enhanced multi-detector row CT

2006 Radiology

3076. Distinguishing benign from malignant adrenal masses: multi-detector row CT protocol with 10-minute delay. (PubMed)

Distinguishing benign from malignant adrenal masses: multi-detector row CT protocol with 10-minute delay. To retrospectively evaluate the accuracy of precontrast attenuation, relative percentage washout (RPW), and absolute percentage washout (APW) in distinguishing benign from malignant adrenal masses at multi-detector row computed tomography (CT).This HIPAA-compliant retrospective study had institutional review board approval; the need for informed consent was waived. One hundred twenty-two

2006 Radiology

3077. Diagnostic architectural and dynamic features at breast MR imaging: multicenter study. (PubMed)

. Although study data collection was performed before HIPAA went into effect, standards that would be compliant with HIPAA were adhered to. Data from the International Breast MR Consortium trial 6883 were used in the analysis. Women underwent 3D (minimum spatial resolution, 0.7 x 1.4 x 3 mm; minimal temporal resolution, 4 minutes) and dynamic two-dimensional (temporal resolution, 15 seconds) MR imaging examinations. Readers rated enhancement shape, enhancement distribution, border architecture

2006 Radiology

3078. High-performance wavelet compression for mammography: localization response operating characteristic evaluation. (PubMed)

obliterated from all images. The study was HIPAA compliant. An algorithm based on scale-specific quantization of biorthogonal wavelet coefficients was developed for the compression of digitized mammograms with high spatial and dynamic resolution. The method was applied to 500 normal and abnormal mammograms from 278 patients who were 32-85 years old, 85 of whom had biopsy-proved cancer. Film images were digitized with a charge-coupled device-based digitizer. The original and compressed reconstructed images

2006 Radiology

3079. Roux-en-Y gastric bypass surgery for morbid obesity: evaluation of postoperative extraluminal leaks with upper gastrointestinal series. (PubMed)

Roux-en-Y gastric bypass surgery for morbid obesity: evaluation of postoperative extraluminal leaks with upper gastrointestinal series. To retrospectively evaluate the radiographic features of extraluminal leak after Roux-en-Y gastric bypass (RYGBP) surgery at upper gastrointestinal (GI) examinations in a large series of patients and to determine morbidity and mortality in those patients with leak.The investigational review board approved this HIPAA-compliant study, and the need for patient

2006 Radiology

3080. Endorectal MR imaging before salvage prostatectomy: tumor localization and staging. (PubMed)

Endorectal MR imaging before salvage prostatectomy: tumor localization and staging. To evaluate retrospectively the accuracy of endorectal magnetic resonance (MR) imaging for the depiction of tumor, extracapsular extension (ECE), and seminal vesicle invasion (SVI) before salvage prostatectomy in patients with locally recurrent prostate cancer after radiation therapy, by using pathologic analysis as the reference standard.The Institutional Review Board granted exempt status for this HIPAA

2006 Radiology

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