[Mediastinal lesions : The most common pathologies in chest X-rays and their correlations in computed tomography].

Background: Many pathologies of the mediastinum can be diagnosed using standard radiographs. Correlation of radiographic findings with computed tomography (CT) is instructive for a better understanding and can help improve detection rates of mediastinal lesions.

Objectives: To identify the most common mediastinal lesions and to correlate their features in chest radiographs and CT.

Comparison of the diagnostic accuracy of cone beam computed tomography and radiography for scaphoid fractures.

The aim of this study was to evaluate and compare the diagnostic accuracy, the inter-rater agreement and raters' certainty of cone beam computed tomography (CBCT) and radiography for the detection of scaphoid fractures. Our hypothesis is that the CBCT has a higher diagnostic accuracy for scaphoid fractures than radiography. We retrospectively analysed patients who underwent both radiography and CBCT examinations within 4 days to rule out a scaphoid fracture over a 2-year period in our institution.

Experience with the Advanced Breast Biopsy Instrumentation (ABBI) system.

Background: The Advanced Breast Biopsy Instrumentation (ABBI) System is designed to excise nonpalpable breast lesions under stereotactic control. We report our experience with special regard to the histological evaluation of margins.

Patients And Methods: Breast biopsies using the ABBI system were performed on 101 patients with microcalcifications.

[Quality assessment using AGIR: results and experience].

Purpose: To evaluate whether a new software from the working group for interventional radiology (AGIR) is an appropriate tool for quality assurance in interventional radiology, and presentation of results acquired within the quality improvement process in 1999.

Patients And Methods: AGIR-defined parameters such as patient data, risk profile, given interventions as well as complications were registered by a recently developed software. Based on monthly data analyses, possible complications were identified and discussed in morbidity and mortality conferences.

Metastatic lymph nodes in patients with cervical cancer: detection with MR imaging and FDG PET.

Purpose: To compare the diagnostic accuracy of magnetic resonance (MR) imaging with that of positron emission tomography (PET) with 2-[fluorine 18]fluoro-2-deoxy-D-glucose (FDG) for detecting metastatic lymph nodes in patients with cervical cancer.

Materials And Methods: Before radical hysterectomy and pelvic lymphadenectomy in 35 patients with International Federation of Gynecology and Obstetrics stage IB or II cervical cancer, abdominal FDG-PET and MR imaging were performed. Malignancy criteria were a lymph node diameter of 1 cm or more at MR imaging and a focally increased FDG uptake at PET.

[Optimizing intravenous bolus contrast medium injection in cervical CT diagnosis].

Purpose: A prospective, comparative study of 60 patients for optimizing contrast medium (CM) administration for spiral CT of the neck.

Methods: Prior to the investigation, the patients were randomly assigned to three groups (n = 20 each): a) conventional CT technique, interscan duration 10 s, CM volume 150 ml of Ultravist 300 (30 ml at a flow rate of 1.5 ml/s, the remaining 120 ml as maintenance dosage of 0.