Comparison of 5-megapixel cathode ray tube monitors and 5-megapixel liquid crystal monitors for soft-copy reading in full-field digital mammography.

Purpose: To retrospectively compare the image quality, lesion detection, and the diagnostic efficacy of 5-megapixel (MP) cathode ray tube monitors (CRTs) and 5-MP liquid crystal display monitors (LCDs) for soft-copy reading in full-field digital mammography (FFDM).

Materials And Methods: Informed consent was waived by the Institutional Review Board for the data analysis. A total of 220 cases were compared with two 5-MP (2048×2560 pixels) CRTs and two 5-MP (2048×2560 pixels) LCDs.

US-guided 14-gauge core-needle breast biopsy: results of a validation study in 1352 cases.

Purpose: To retrospectively determine the false-negative rate and the underestimation rate of ultrasonography (US)-guided 14-gauge core-needle breast biopsy (CNB) in nonpalpable lesions, with validation at surgical excision histologic examination and with stability during clinical and imaging follow-up.

Materials And Methods: Informed consent was waived by the institutional review board for this retrospective review of 1352 cases. In 1061 cases, patients underwent surgical excision of lesions visible at US subsequent to US-guided 14-gauge CNB.

Secondary signs of non-enhanced CT prior to laser ureterolithotripsy: is treatment outcome predictable?

Purpose: To correlate the presence of secondary signs of non-enhanced computed tomography (NECT) in renal units harboring ureteral calculi with intraoperative findings and treatment outcome after holmium:yttrium-aluminum-garnet laser (Ho:YAG) ureterolithotripsy.

Subjects And Methods: Two-hundred patients were prospectively included after ureteral calculi were detected on NECT. All patients underwent Ho:YAG ureterolithotripsy at the Medical University of Vienna.

Diagnostic accuracy of computed tomography-guided percutaneous biopsy of renal masses.

Objective: Modern imaging modalities increase the detection of small ( View Article and Find Full Text PDF

Diffusion weighted imaging in osteoradiology.

Diffusion weighted imaging gained attention as an imaging modality, which provides information on the microstructure of a tissue, which can be used for tissue characterization. This is of importance in patients where other diagnostic tools provide equivocal or unspecific information. In addition quantitative diffusion measurements provide objective parameters for unbiased comparison of treatment response, which is mandatory for therapy monitoring.

Unenhanced MDCT in patients with suspected urinary stone disease: do coronal reformations improve diagnostic performance?

Objective: The objectives of our study were to assess whether coronal reformations improve the diagnostic performance of MDCT in patients with acute flank pain and suspected urinary stone disease; and to determine if performing such reformations from 3-mm-thick sections is sufficient or if it is necessary to perform reformations from thinner sections.

Materials And Methods: We included 147 consecutive patients (72 women and 75 men; mean age +/- SD, 58 +/- 18.1 years) with suspected urinary stone disease who underwent unenhanced MDCT.

Fatal Mycoplasma pneumoniae pneumonia in a previously healthy 18-year-old girl.

A case of fatal Mycoplasma pneumoniae pneumonia in a previously healthy 18-year-old girl is reported. On hospital day 9, the antibody titer to M. pneumoniae was 1:512 in the complement fixation test and 1:5120 in the microparticle agglutination assay.

Renal tumour size measured radiologically before surgery is an unreliable variable for predicting histopathological features: benign tumours are not necessarily small.

Objective: To compare histopathological findings as a function of radiological tumour size, as published data suggest that small renal tumours are often benign and large tumours are renal cell cancer (RCC).

Patients And Methods: Data from 543 surgically treated patients with solid renal tumours were analysed retrospectively. Tumour size measured by computed tomography (CT) before surgery was stratified into seven subgroups (cm): 0-2, 2.

Rapid extracorporeal shock wave lithotripsy for proximal ureteral calculi in colic versus noncolic patients.

Objectives: In delayed extracorporeal shock wave lithotripsy (ESWL) treatment, increasing stone impaction is associated with delayed stone clearance. Whether colic patients treated by rapid ESWL have the same time to stone clearance as noncolic patients, which supports the thesis that stones in both groups are nonimpacted, has not been investigated yet, and was the objective of this study.

Methods: A total of 82 patients were prospectively enrolled and treated with piezoelectric ESWL for a solitary proximal ureteral stone.

Imaging of adrenal masses.

Purpose Of Review: This review aims to outline recent developments in adrenal imaging and characterization. Controversies in the management of adrenal incidentalomas will be addressed.

Recent Findings: Evaluation of density readings on unenhanced computed tomography and on contrast-enhanced delayed series has tremendously improved the characterization of adrenal masses.

Axillary lymph node metastases in patients with breast carcinomas: assessment with nonenhanced versus uspio-enhanced MR imaging.

Purpose: To prospectively assess the accuracy of nonenhanced versus ultrasmall superparamagnetic iron oxide (USPIO)-enhanced magnetic resonance (MR) imaging for depiction of axillary lymph node metastases in patients with breast carcinoma, with histopathologic findings as reference standard.

Materials And Methods: The study was approved by the university ethics committee; written informed consent was obtained. Twenty-two women (mean age, 60 years; range, 40-79 years) with breast carcinomas underwent nonenhanced and USPIO-enhanced (2.

Comparison of expandable electrodes in percutaneous radiofrequency ablation of renal cell carcinoma.

Objective: To compare two different expandable electrodes in radiofrequency ablation of renal cell carcinoma.

Methods: Percutaneous ablation was performed at two centers using either an expandable 7F umbrella-shaped LeVeen probe (diameter 2-4 cm) and a 200-W generator (group A), or an expandable Starburst XL electrode with a 150-W generator (group B). From each center, eight patients with one tumor each were matched retrospectively with regard to tumor volume, which was 9.

Occult scaphoid fractures: comparison of multidetector CT and MR imaging--initial experience.

Purpose: To compare the diagnostic performance of multidetector computed tomography (CT) and magnetic resonance (MR) imaging in patients clinically suspected of having a scaphoid fracture and who had normal initial radiographs, with radiographs obtained 6 weeks after trauma as the reference standard.

Materials And Methods: The ethics committee approved the study, and all patients gave written informed consent. Twenty-nine patients (17 male, 12 female; age range, 17-62 years; mean age, 34 years +/- 13) underwent multidetector CT and MR imaging within 6 days after trauma.

Percutaneous radiofrequency ablation of renal tumors: midterm results in 16 patients.

Purpose: To evaluate the outcome of 16 patients after percutaneous radiofrequency ablation of renal tumors.

Materials And Methods: Sixteen patients (nine women, seven men; mean age, 61+/-9 years) with 24 unresectable renal tumors (mean volume, 4.3+/-4.

Lesion miss rates and false-negative rates for 1115 consecutive cases of stereotactically guided needle-localized open breast biopsy with long-term follow-up.

Purpose: To retrospectively determine the lesion miss rate and false-negative rate of needle-localized open breast biopsy (NLOBB) with stereotactic guidance in a large study population.

Materials And Methods: The ethical review board approved the study; the need for informed consent was waived. A total of 1115 stereotactic NLOBBs performed in 1068 women aged 22-90 years (mean age, 54 years) were tracked to determine outcomes.

Unenhanced multi-detector row CT in patients suspected of having urinary stone disease: effect of section width on diagnosis.

Purpose: To assess prospectively the effect of section width in multi-detector row computed tomographic (CT) evaluation of patients with acute flank pain who are suspected of having or known to have urinary stone disease.

Materials And Methods: This study was approved by the ethics committee of the authors' university, and written informed consent was obtained from all patients. One hundred forty-seven patients (age range, 11-101 years; mean, 51.