HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Chapman, V. M. Articles by Jaramillo, D. Search for Related Content PubMed PubMed Citation Articles by Chapman, V. M. Articles by Jaramillo, D. Social Bookmarking                      What's this? Hotlight (NEW!) What's Hotlight?

16-MDCT of the Posttraumatic Pediatric Elbow: Optimum Parameters and Associated Radiation Dose

¹ All authors: Massachusetts General Hospital, 7 Norwich Lane, Methuen, MA 01844.

View larger version (108K): [in a new window]   Fig. 1A —Fractured extremity of Yorkshire pig cadaver imaged with MDCT using z-axis automated tube-current modulation at 100 kVp and various noise index settings. Fracture conspicuity for two fracture lines from minimally displaced fracture of distal humerus (arrows, A) is excellent at noise indexes of 20 (A) and 30 (B).

View larger version (117K): [in a new window]   Fig. 1B —Fractured extremity of Yorkshire pig cadaver imaged with MDCT using z-axis automated tube-current modulation at 100 kVp and various noise index settings. Fracture conspicuity for two fracture lines from minimally displaced fracture of distal humerus (arrows, A) is excellent at noise indexes of 20 (A) and 30 (B).

View larger version (125K): [in a new window]   Fig. 1C —Fractured extremity of Yorkshire pig cadaver imaged with MDCT using z-axis automated tube-current modulation at 100 kVp and various noise index settings. With increasing noise index, fracture lines are less distinct, with fracture conspicuity regarded as good at noise index of 40 (C) and poor at noise index of 50 (D).

View larger version (131K): [in a new window]   Fig. 1D —Fractured extremity of Yorkshire pig cadaver imaged with MDCT using z-axis automated tube-current modulation at 100 kVp and various noise index settings. With increasing noise index, fracture lines are less distinct, with fracture conspicuity regarded as good at noise index of 40 (C) and poor at noise index of 50 (D).

View larger version (136K): [in a new window]   Fig. 2A —13-year-old boy with elbow pain after a fall. MDCT of elbow was performed for preoperative planning. Frontal (A) and lateral (B) radiographs of elbow show displaced fracture of lateral humeral condyle and comminuted fracture of proximal ulna but are limited by overlying splint.

View larger version (130K): [in a new window]   Fig. 2B —13-year-old boy with elbow pain after a fall. MDCT of elbow was performed for preoperative planning. Frontal (A) and lateral (B) radiographs of elbow show displaced fracture of lateral humeral condyle and comminuted fracture of proximal ulna but are limited by overlying splint.

View larger version (93K): [in a new window]   Fig. 2C —13-year-old boy with elbow pain after a fall. MDCT of elbow was performed for preoperative planning. Axial (C) and coronal (D) MDCT images show degree of displacement of lateral condyle fracture fragment (arrow) and comminuted proximal ulnar fracture (arrowheads, C).

View larger version (98K): [in a new window]   Fig. 2D —13-year-old boy with elbow pain after a fall. MDCT of elbow was performed for preoperative planning. Axial (C) and coronal (D) MDCT images show degree of displacement of lateral condyle fracture fragment (arrow) and comminuted proximal ulnar fracture (arrowheads, C).

View larger version (102K): [in a new window]   Fig. 2E —13-year-old boy with elbow pain after a fall. MDCT of elbow was performed for preoperative planning. Three-dimensional image shows fractures of lateral condyle and proximal ulna and displacement and relationship of fracture fragments to donor sites and one another.

View larger version (107K): [in a new window]   Fig. 3A —Variation in radiation dose as function of patient position, shown on scout images from MDCT of elbow in three children evaluated for acute elbow trauma. 6-year-old girl is correctly positioned with elbow superior to vertex of skull and forearm angled to x,y-plane, with resulting volume CT dose index of 0.98 mGy and dose–length product of 9.73 mGy·cm.

View larger version (113K): [in a new window]   Fig. 3B —Variation in radiation dose as function of patient position, shown on scout images from MDCT of elbow in three children evaluated for acute elbow trauma. 11-year-old girl is incorrectly positioned with forearm in x,y-plane, with resulting increased attenuation and volume CT dose index of 4.49 mGy and dose–length product of 37.04 mGy·cm.

View larger version (113K): [in a new window]   Fig. 3C —Variation in radiation dose as function of patient position, shown on scout images from MDCT of elbow in three children evaluated for acute elbow trauma. 4-year-old boy is incorrectly positioned with skull in plane with elbow, with resulting increased attenuation and volume CT dose index of 7.38 mGy and dose–length product of 55 mGy·cm.

CiteULike

Complore

Connotea

Del.icio.us

Digg

Reddit

Technorati