Fat necrosis and parenchymal scarring after breast-conserving surgery and radiotherapy with an intraoperative electron or fractionated, percutaneous boost: a retrospective comparison.

Background: The aim of this retrospective analysis was to evaluate mammographic changes such as fat necroses and parenchymal scarring in the breast tissue within the first 3 years after breast-conserving surgery (BCS) and whole-breast irradiation with an additional intraoperative electron boost (IO-B) versus fractionated percutaneous boost (FP-B).

Methods: A total of 53 breast cancer patients (stage I/II) treated between 2006 and 2008 were included. All patients underwent BCS followed by fractionated whole-breast radiotherapy with a total dose and single dose of 50.

Value of conventional chest radiography for the detection of coronary calcifications: comparison with MSCT.

Purpose: To evaluate if computed tomography (CT) coronary calcium scoring is needed after detection of coronary calcifications on conventional chest radiographs.

Materials And Methods: One hundred and five patients (67 men; 57.2+/-12.

Extended query refinement for medical image retrieval.

The impact of image pattern recognition on accessing large databases of medical images has recently been explored, and content-based image retrieval (CBIR) in medical applications (IRMA) is researched. At the present, however, the impact of image retrieval on diagnosis is limited, and practical applications are scarce. One reason is the lack of suitable mechanisms for query refinement, in particular, the ability to (1) restore previous session states, (2) combine individual queries by Boolean operators, and (3) provide continuous-valued query refinement.

Informatics in radiology (infoRAD): new tools for computer assistance in thoracic CT part 2. Therapy monitoring of pulmonary metastases.

Owing to the rapid development of scanner technology, thoracic computed tomography (CT) offers new possibilities but also faces enormous challenges with respect to the quality of computer-assisted diagnosis and therapy planning. In the framework of the Virtual Institute for Computer Assistance in Clinical Radiology cooperative research project, a software application was developed to assist the radiologist in the analysis of thoracic CT data for the purpose of evaluating the response to tumor therapy. The application provides follow-up support for monitoring of tumor therapy by means of volumetric quantification of tumors and temporal registration.

Automatic categorization of medical images for content-based retrieval and data mining.

Categorization of medical images means selecting the appropriate class for a given image out of a set of pre-defined categories. This is an important step for data mining and content-based image retrieval (CBIR). So far, published approaches are capable to distinguish up to 10 categories.

Determining the view of chest radiographs.

Automatic identification of frontal (posteroanterior/anteroposterior) vs. lateral chest radiographs is an important preprocessing step in computer-assisted diagnosis, content-based image retrieval, as well as picture archiving and communication systems. Here, a new approach is presented.

Low-dose multislice spiral computed tomography in acute lung injury: animal experience.

Rationale And Objectives: To compare low-dose multislice spiral CT (MSCT) with a standard protocol for the evaluation of acute lung injury (ALI) in an animal model.

Materials And Methods: Eleven healthy intubated pigs (weight: 32.4 kg +/- 1.