Details

Autor(en) / Beteiligte

• Sailer, Johannes
• Prokop, Mathias
• Neitzel, Ulrich
• Weber, Michael
• Peloschek, Philipp
• Schaefer-Prokop, Cornelia

Titel

Comparison of an Automatic Versus a Semiautomatic Mode for Gray-Scale Adaptation for Digital Chest Radiography

Ist Teil von

• Investigative radiology, 2004-06, Vol.39 (6), p.325-333

Ort / Verlag

United States: Lippincott Williams & Wilkins, Inc

Erscheinungsjahr

2004

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• PURPOSE:To compare image quality of digital chest radiographs using 2 modes of gradation adjustment. METHODS:We compared image quality and visualization of anatomic landmarks of 50 chest radiographs after digital processing using a semiautomatic mode with a fixed gamma of 2.6 and an automatic mode with individual gamma adaptation. RESULTS:The mean gamma was significantly higher (P < 0.001) with the automatic mode (3.0 vs. 2.6, respectively). Patient constitution had no impact on the automatically adapted gamma for PA but showed a significant correlation (P < 0.001) for lateral images. For PA, there was a preference (P < 0.016) of the semiautomatic mode in heavier patients whereas no difference was seen in slim patients. For the lateral projection, there was a general preference (P = 0.001) of the automatic mode. CONCLUSION:For PA radiographs, the semiautomatic mode provides superior results for heavier patients without compromising the quality in slim patients. For lateral radiographs, the automatic mode provides generally superior results.