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3041. Underestimation of the presence of breast carcinoma in papillary lesions initially diagnosed at core-needle biopsy. (PubMed)

Underestimation of the presence of breast carcinoma in papillary lesions initially diagnosed at core-needle biopsy. To retrospectively determine the degree of underestimation of breast carcinoma diagnosis in papillary lesions initially diagnosed at core-needle biopsy.Institutional review board approval and waiver of informed consent were obtained for this HIPAA-compliant study. Mammographic database review (1994-2003) revealed core biopsy diagnoses of benign papilloma (n=38), atypical papilloma

2007 Radiology

3042. Prediction of seminal vesicle invasion in prostate cancer: incremental value of adding endorectal MR imaging to the Kattan nomogram. (PubMed)

Prediction of seminal vesicle invasion in prostate cancer: incremental value of adding endorectal MR imaging to the Kattan nomogram. To retrospectively determine whether endorectal magnetic resonance (MR) imaging findings contribute incremental value to the Kattan nomogram for predicting seminal vesicle invasion (SVI) in patients with prostate cancer.The institutional review board issued a waiver of authorization, which included a waiver of informed consent, for this HIPAA-compliant study. From

2007 Radiology

3043. Salvage of nonmaturing native fistulas by using angioplasty. (PubMed)

Salvage of nonmaturing native fistulas by using angioplasty. To retrospectively review outcomes following angioplasty of nonmaturing autogenous hemodialysis fistulas.Institutional review board exemption was received for this HIPAA-compliant retrospective study; informed consent was waived. During 48 months, 101 patients underwent fistulography for percutaneous salvage of nonmaturing native fistulas. Clinical and technical success, need for secondary interventions, and complications were

2007 Radiology

3044. Sporadic lymphangioleiomyomatosis and tuberous sclerosis complex with lymphangioleiomyomatosis: comparison of CT features. (PubMed)

Sporadic lymphangioleiomyomatosis and tuberous sclerosis complex with lymphangioleiomyomatosis: comparison of CT features. To retrospectively compare the frequencies of computed tomographic (CT) findings in patients with lymphangioleiomyomatosis (LAM) and patients with tuberous sclerosis complex (TSC) and LAM.Institutional review board approval and informed consent were obtained for the HIPAA-compliant study. In 256 patients with LAM (mean age, 44 years) and 67 patients with TSC/LAM (mean age

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2007 Radiology

3045. Effects of surgical ventricular restoration on left ventricular function: dynamic MR imaging. (PubMed)

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

3046. CT of small-bowel ischemia associated with obstruction in emergency department patients: diagnostic performance evaluation. (PubMed)

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

3047. Perforated versus nonperforated acute appendicitis: accuracy of multidetector CT detection. (PubMed)

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

3048. Polyps: linear and volumetric measurement at CT colonography. (PubMed)

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

3049. Multi-detector row CT urography of normal urinary collecting system: furosemide versus saline as adjunct to contrast medium. (PubMed)

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

3050. Ductal carcinoma in situ: computer-aided detection in screening mammography. (PubMed)

Ductal carcinoma in situ: computer-aided detection in screening mammography. To retrospectively evaluate the sensitivity of computer-aided detection (CAD) in depicting ductal carcinoma in situ (DCIS) on screening mammograms by using biopsy proved lesion location as the reference standard.Institutional review board approval was obtained, with a waiver of patient informed consent for this HIPAA-compliant study. Findings of all image-guided biopsies with a pathologic diagnosis of DCIS during a 1

2006 Radiology

3051. Multi-detector row CT of the small bowel: peak enhancement temporal window--initial experience. (PubMed)

Multi-detector row CT of the small bowel: peak enhancement temporal window--initial experience. To prospectively determine quantitatively and qualitatively the timing of maximal enhancement of the normal small-bowel wall by using contrast material-enhanced multi-detector row computed tomography (CT).This HIPAA-compliant study was approved by the institutional review board. After information on radiation risk was given, written informed consent was obtained from 25 participants with no history

2007 Radiology

3052. CT screening for lung cancer: five-year prospective experience. (PubMed)

CT screening for lung cancer: five-year prospective experience. To report results of a 5-year prospective low-dose helical chest computed tomographic (CT) study of a cohort at high risk for lung cancer.After informed written consent was obtained, 1520 individuals were enrolled. Protocol was approved by institutional review board and National Cancer Institute and was compliant with Health Insurance Portability and Accountability Act, or HIPAA. Participants were aged 50 years and older and had

2005 Radiology

3053. Vascular mapping of the leg with multi-detector row CT angiography prior to free-flap transplantation. (PubMed)

Vascular mapping of the leg with multi-detector row CT angiography prior to free-flap transplantation. To retrospectively evaluate multi-detector row computed tomographic (CT) angiography in determining donor- and recipient-site arterial suitability for successful vascularized free-flap transplantation.The institutional review board granted approval; informed consent was waived, and the study was HIPAA compliant. Lower extremities of 20 (12 male, eight female; mean age, 51 years; range, 10-84

2005 Radiology

3054. Linear polyp measurement at CT colonography: in vitro and in vivo comparison of two-dimensional and three-dimensional displays. (PubMed)

Linear polyp measurement at CT colonography: in vitro and in vivo comparison of two-dimensional and three-dimensional displays. To compare the accuracy of polyp measurement at computed tomographic (CT) colonography by using two-dimensional (2D) multiplanar reformation (MPR) and three-dimensional (3D) endoluminal displays obtained both in a colon phantom and at clinical examinations.This HIPAA-compliant study had institutional review board approval, and all patients provided signed informed

2005 Radiology

3055. Assessment of acute renal transplant rejection with blood oxygen level-dependent MR imaging: initial experience. (PubMed)

Assessment of acute renal transplant rejection with blood oxygen level-dependent MR imaging: initial experience. To prospectively assess the oxygenation state of renal transplants and determine the feasibility of using blood oxygen level-dependent (BOLD) magnetic resonance (MR) imaging to differentiate between acute tubular necrosis (ATN), acute rejection, and normal function.This HIPAA-compliant study had institutional human subjects review committee approval, and written informed consent

2005 Radiology

3056. The flexor hallucis longus: tenographic technique and correlation of imaging findings with surgery in 39 ankles. (PubMed)

The flexor hallucis longus: tenographic technique and correlation of imaging findings with surgery in 39 ankles. To examine the use of tenography for evaluation of the flexor hallucis longus (FHL) sheath.Institutional review board approval was waived, patient consent was obtained, and the study was HIPAA compliant. Retrospective review of 192 FHL tenograms and associated surgical records identified 39 ankles in 37 patients (17 male, 20 female; mean age +/- standard deviation, 38 years +/- 13.8

2005 Radiology

3057. Untreated pediatric primitive neuroectodermal tumor in vivo: quantitation of taurine with MR spectroscopy. (PubMed)

. This study was HIPAA compliant. Single-voxel proton spectroscopy was added to the preoperative MR imaging work-up of 29 patients (12 boys and 17 girls; mean age, 6.5 years +/- 3.5) with untreated brain tumors; 13 had PNETs, and 16 had other tumors. Absolute concentrations (measured in millimoles per kilogram of brain tissue) of metabolites of the proton spectrum were determined. Student t tests were used for statistical comparisons.Elevated absolute Tau concentration proved to be the most significant

2005 Radiology

3058. Efficacy and safety of MR imaging with liver-specific contrast agent: U.S. multicenter phase III study. (PubMed)

consent were obtained. HIPAA went into effect after data collection. A total of 172 patients were enrolled. After precontrast MR imaging, 169 patients (94 men, 75 women; mean age, 61 years; age range, 19-84 years) received an intravenous bolus of 25 micromol/kg Gd-EOB-DTPA and underwent dynamic gradient-recalled-echo and delayed MR imaging 20 minutes after injection. Arterial and portal phase computed tomography (CT) were performed within 6 weeks of MR imaging. The standard of reference was surgery

2005 Radiology

3059. Occult breast cancer: scintimammography with high-resolution breast-specific gamma camera in women at high risk for breast cancer. (PubMed)

Occult breast cancer: scintimammography with high-resolution breast-specific gamma camera in women at high risk for breast cancer. To prospectively evaluate a high-resolution breast-specific gamma camera for depicting occult breast cancer in women at high risk for breast cancer but with normal mammographic and physical examination findings.Institutional Review Board approval and informed consent were obtained. The study was HIPAA compliant. Ninety-four high-risk women (age range, 36-78 years

2005 Radiology

3060. Pain control requirements for percutaneous ablation of renal tumors: cryoablation versus radiofrequency ablation--initial observations. (PubMed)

Pain control requirements for percutaneous ablation of renal tumors: cryoablation versus radiofrequency ablation--initial observations. To retrospectively compare the pain control requirements of patients undergoing computed tomography (CT)-guided percutaneous radiofrequency (RF) ablation with those of patients undergoing CT-guided percutaneous cryoablation of small (< or = 4-cm) renal tumors.The study was HIPAA compliant and received institutional review board exemption; informed consent

2005 Radiology

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