Improved routine chest radiography with a trough filter

Journal Article · Thu Jan 01 04:00:00 EST 1981 · AJR, Am. J. Roentgenol.; (United States)

DOI:https://doi.org/10.2214/ajr.137.4.695· OSTI ID:5577977

Wieder, S; Adams, P L

Use of the aluminum trough filter for phototimed posteroanterior chest radiographs at 120 kVp provides excellent detail within the parenchyma of the lung as well as greatly enhanced visualization of mediastinal structures on a single exposure. An improvement in overall diagnostic value was noted by a panel of radiologists in 87% of 50 cases compared with conventional 120 kVp technique. Dosimetric measurements of the entrance exposure indicate a 12.5% reduction over the mediastinum and a 62% reduction over the lateral lung field compared with routine nonfilter examinations. The filter is inexpensive and readily adapted to any x-ray unit and is, therefore, an attractive alternative to costly high kVp sources. Furthermore, the attenuation coefficient for calcium in bone and parenchyma remains relatively high with preservation of calcium contrast. Repeat exposures have been minimized and the need for additional projections virtually eliminated.

• Research Organization: Department of Diagnostic Radiology, University of Tennessee Center for the Health Sciences, Memphis
• OSTI ID: 5577977
• Journal Information: AJR, Am. J. Roentgenol.; (United States), Journal Name: AJR, Am. J. Roentgenol.; (United States) Vol. 137:4; ISSN AAJRD
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
61 RADIATION PROTECTION AND DOSIMETRY
62 RADIOLOGY AND NUCLEAR MEDICINE
655003 -- Medical Physics-- Dosimetry
BIOMEDICAL RADIOGRAPHY
BODY
BODY AREAS
CHEST
DIAGNOSTIC TECHNIQUES
DOSIMETRY
ELECTROMAGNETIC RADIATION
EQUIPMENT
EVALUATION
FILTERS
IONIZING RADIATIONS
LUNGS
MEDICINE
NUCLEAR MEDICINE
ORGANS
RADIATIONS
RADIOLOGY
RESPIRATORY SYSTEM
X RADIATION
X-RAY EQUIPMENT