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2961. Bachmann Bundle and its arterial supply: imaging with multidetector CT--implications for interatrial conduction abnormalities and arrhythmias. (Abstract)

Bachmann Bundle and its arterial supply: imaging with multidetector CT--implications for interatrial conduction abnormalities and arrhythmias. To retrospectively investigate anatomy of Bachmann Bundle (BB) and its vascular supply at 64-section multidetector computed tomography (CT) in healthy patients and patients with abnormalities.The institutional review board approved this HIPAA-compliant study and waived informed consent. Clinical histories, electrocardiograms (ECGs), and coronary 64

2008 Radiology

2962. Comprehensive assessment of myocardial perfusion defects, regional wall motion, and left ventricular function by using 64-section multidetector CT. Full Text available with Trip Pro

Comprehensive assessment of myocardial perfusion defects, regional wall motion, and left ventricular function by using 64-section multidetector CT. To evaluate the accuracy of 64-section multidetector computed tomography (CT) for the assessment of perfusion defects (PDs), regional wall motion (RWM), and global left ventricular (LV) function.All myocardial infarction (MI) patients signed informed consent. The IRB approved the study and it was HIPAA-compliant. Cardiac multidetector CT

2008 Radiology

2963. Isovolumic cardiac contraction on high-temporal-resolution cine MR images: study in heart failure patients and healthy volunteers. (Abstract)

Association (NYHA) symptom class as reference standards.Following institutional review board approval of this HIPAA-compliant study and written informed consent, 18 healthy volunteers (10 women, eight men; mean age, 43 years +/- 14 [standard deviation]) and 18 HF patients (five women, 13 men; mean age, 49.8 years +/- 3) were imaged (breath-hold true fast imaging with steady-state precession, with temporal resolution of 5.6 msec at 1.5 T). By using left ventricular (LV) outflow tract acquisition, PEC phase

2008 Radiology

2964. Colonic wall redundancy at CT in patients with cystic fibrosis. (Abstract)

Colonic wall redundancy at CT in patients with cystic fibrosis. To describe the appearance, prevalence, and possible associations of colonic wall redundancy in patients with cystic fibrosis (CF).The institutional review board approved this HIPAA-compliant study. Abdominal computed tomographic (CT) images of 38 consecutive patients with CF and a control group of 38 consecutive potential renal donors were retrospectively identified. Three readers independently recorded presence and location

2008 Radiology

2965. Effect of age and tumor grade on BOLD functional MR imaging in preoperative assessment of patients with glioma. (Abstract)

Effect of age and tumor grade on BOLD functional MR imaging in preoperative assessment of patients with glioma. To retrospectively determine if there was a combined effect of advanced age and increased tumor grade on blood oxygen level-dependent (BOLD) functional magnetic resonance (MR) imaging signal intensity (SI) in patients with gliomas.The institutional review board approved this HIPAA-compliant study, and the informed consent requirement was waived. Data from 39 patients (27 men, 12 women

2008 Radiology

2966. Rotator cuff in asymptomatic volunteers: contrast-enhanced US depiction of intratendinous and peritendinous vascularity. Full Text available with Trip Pro

-enhanced shoulder US performed with an L8-4 transducer operating in contrast harmonic mode and a mechanical index of 0.07 in a HIPAA-compliant protocol. Images were obtained in the volunteers at rest and after exercise. Quantitative analysis was performed by using the time-enhancement postcontrast data derived from four regions of interest (ROIs): bursal medial, articular medial, bursal lateral, and articular lateral. Two 2-minute acquisitions were performed after each contrast material bolus. Baseline

2008 Radiology

2967. The "laboratory" effect: comparing radiologists' performance and variability during prospective clinical and laboratory mammography interpretations. Full Text available with Trip Pro

The "laboratory" effect: comparing radiologists' performance and variability during prospective clinical and laboratory mammography interpretations. To compare radiologists' performance during interpretation of screening mammograms in the clinic with their performance when reading the same mammograms in a retrospective laboratory study.This study was conducted under an institutional review board-approved, HIPAA-compliant protocol; the need for informed consent was waived. Nine experienced

2008 Radiology

2968. Anteroposterior hippocampal metabolic heterogeneity: three-dimensional multivoxel proton 1H MR spectroscopic imaging--initial findings. Full Text available with Trip Pro

in this HIPAA-compliant prospective study and gave institutional review board-approved written consent. Volume of interest was centered on and tilted parallel to hippocampal anteroposterior plane. Absolute N-acetylaspartate (NAA), choline, and creatine levels were obtained in each voxel, with phantom replacement.Mean NAA, creatine, and choline concentrations in the young group were higher in posterior hippocampus (12.9 mmol/L +/- 2.0 [standard deviation], 7.8 mmol/L +/- 1.2, 2.3 mmol/L +/- 0.4, respectively

2008 Radiology

2969. Localization of the appendix at MR imaging during pregnancy: utility of the cecal tilt angle. (Abstract)

Localization of the appendix at MR imaging during pregnancy: utility of the cecal tilt angle. To determine whether the cecal tilt angle on sagittal magnetic resonance (MR) images in pregnant patients correlates with the location of the appendix and gestational age and whether the cecal tilt angle can help predict the location of the appendix.This HIPAA-compliant retrospective study was approved by the institutional review board. Informed consent was waived. Of 146 consecutive pregnant patients

2008 Radiology

2970. Colorectal liver metastases: contrast agent diffusion coefficient for quantification of contrast enhancement heterogeneity at MR imaging. (Abstract)

Colorectal liver metastases: contrast agent diffusion coefficient for quantification of contrast enhancement heterogeneity at MR imaging. To describe and determine the reproducibility of a simplified model to quantitatively measure heterogeneous intralesion contrast agent diffusion in colorectal liver metastases.This HIPAA-compliant retrospective study received institutional review board approval, and written informed consent was obtained from 14 patients (mean age, 61 years +/- 9 [standard

2008 Radiology

2971. Bone and soft-tissue lesions: what factors affect diagnostic yield of image-guided core-needle biopsy? (Abstract)

Bone and soft-tissue lesions: what factors affect diagnostic yield of image-guided core-needle biopsy? To assess lesion-related and technical factors that affect diagnostic yield in image-guided core-needle biopsy (CNB) of bone and soft-tissue lesions.Institutional review board approval and verbal informed consent were obtained for a HIPAA-compliant prospective study of 151 consecutive CNBs of bone (n = 88) and soft-tissue (n = 63) lesions. Each CNB specimen was reported separately in the final

2008 Radiology

2972. Left ventricle: automated segmentation by using myocardial effusion threshold reduction and intravoxel computation at MR imaging. Full Text available with Trip Pro

Left ventricle: automated segmentation by using myocardial effusion threshold reduction and intravoxel computation at MR imaging. This retrospective analysis of existing patient data had institutional review board approval and was performed in compliance with HIPAA. No informed consent was required. The purpose of the study was to develop and validate an algorithm for automated segmentation of the left ventricular (LV) cavity that accounts for papillary and/or trabecular muscles and partial

2008 Radiology

2973. Visceral and soft-tissue tumors: radiofrequency and alcohol ablation for pain relief--initial experience. (Abstract)

Visceral and soft-tissue tumors: radiofrequency and alcohol ablation for pain relief--initial experience. To determine retrospectively the effectiveness of percutaneous radiofrequency ablation (RFA) alone, alcohol ablation alone, or combined RFA and alcohol ablation (hereafter, combined ablation) to treat pain in patients with visceral and soft-tissue malignancies.This HIPAA-compliant study was institutional review board approved; the informed consent requirement was waived. Twenty patients

2008 Radiology

2974. Anterior cruciate ligament reconstruction grafts: MR imaging features at long-term follow-up--correlation with functional and clinical evaluation. (Abstract)

obtained. The study was HIPAA compliant. Forty-seven patients were included and underwent 1.5-T magnetic resonance (MR) imaging of the knee that was treated surgically. Signal intensity characteristics of the ACL graft were evaluated on sagittal intermediate-weighted and sagittal and axial T2-weighted fast spin-echo MR images. The amount of signal intensity change, femoral and tibial graft tunnel position, and orientation of ACL graft in the coronal plane were assessed. Objective index of graft

2008 Radiology

2975. Uterine leiomyomas: MR imaging-guided focused ultrasound surgery--imaging predictors of success. Full Text available with Trip Pro

Uterine leiomyomas: MR imaging-guided focused ultrasound surgery--imaging predictors of success. To retrospectively assess the magnetic resonance (MR) imaging predictors of success at reducing uterine leiomyoma volume and achieving patient symptom relief 12 months after MR imaging-guided focused ultrasound surgery.This single-center retrospective analysis of 71 symptomatic fibroids in 66 women was approved by the institutional review board and was HIPAA-compliant. Patients were treated with MR

2008 Radiology

2976. Visualization of cerebrospinal fluid movement with spin labeling at MR imaging: preliminary results in normal and pathophysiologic conditions. (Abstract)

Visualization of cerebrospinal fluid movement with spin labeling at MR imaging: preliminary results in normal and pathophysiologic conditions. Institutional review board approval and informed consent were obtained for this study. This study was HIPAA compliant. The purpose of this study was to visualize the movement of cerebrospinal fluid (CSF) noninvasively by using an unenhanced magnetic resonance imaging technique. A time-spatial labeling inversion pulse (SLIP) technique was applied to label

2008 Radiology

2977. Pediatric radiation exposure and effective dose reduction during voiding cystourethrography. (Abstract)

review board approval was obtained, and the informed consent requirement was waived for this HIPAA-compliant retrospective study. Radiation exposure and fluoroscopy time during VCUG were reviewed in 145 children (75 girls, 70 boys; age range, 3 days to 8 years) who underwent GCPFL or CFL between 2001 and 2002. Children were grouped on the basis of the fluoroscopy unit used and their supine anteroposterior abdominal diameter (group 1, 8.0-8.5-cm diameter; group 2, 10-11-cm diameter; group 3, 12-13-cm

2008 Radiology

2978. Direct comparison of FDG PET and CT findings in patients with lymphoma: initial experience. (Abstract)

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

2979. Image-guided percutaneous radiofrequency ablation and incidence of post-radiofrequency ablation syndrome: prospective survey. (Abstract)

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

2980. Prediction of organ-confined prostate cancer: incremental value of MR imaging and MR spectroscopic imaging to staging nomograms. Full Text available with Trip Pro

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

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