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 Yamamoto, A. Articles by Inoue, Y. Search for Related Content PubMed PubMed Citation Articles by Yamamoto, A. Articles by Inoue, Y. Social Bookmarking                      What's this? Hotlight (NEW!) What's Hotlight?

Assessment of Cerebral Microembolism During Percutaneous Radiofrequency Ablation of Lung Tumors Using Diffusion-Weighted Imaging

¹ Department of Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan.
² Second Department of Surgery, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka 545-8585, Japan.

View larger version (76K): [in a new window]   Fig. 1A. —65-year-old man with 25-mm lung metastasis from leiomyosarcoma (patient 7 in Table 1). Sonogram in carotid artery during pulmonary radiofrequency ablation shows microemboli and materials (white arrow) that are considered to be microbubbles. Visible vertical spike (black arrows) indicating passage of emboli is observed.

View larger version (172K): [in a new window]   Fig. 1B. —65-year-old man with 25-mm lung metastasis from leiomyosarcoma (patient 7 in Table 1). Diffusion-weighted image (B) and FLAIR image (C) of head obtained 20 hr after radiofrequency ablation show no new area of abnormal intensity and no evidence of acute stroke. High-intensity area in bilateral posterior periventricular white matter was present on preoperative MR image (not shown).

View larger version (175K): [in a new window]   Fig. 1C. —65-year-old man with 25-mm lung metastasis from leiomyosarcoma (patient 7 in Table 1). Diffusion-weighted image (B) and FLAIR image (C) of head obtained 20 hr after radiofrequency ablation show no new area of abnormal intensity and no evidence of acute stroke. High-intensity area in bilateral posterior periventricular white matter was present on preoperative MR image (not shown).

View larger version (7K): [in a new window]   Fig. 2A. —Graphs illustrate findings. Graphs show relation between existence of microemboli (white bars) and tumor size (A), maximum power (B), and treatment time (C). Black bars indicate number of patients with no microemboli. Analyses show difference between patients with microemboli and those with no microemboli is statistically significant for average tumor size (p = 0.0100), average maximum power (p = 0.0149), and average treatment time (p = 0.0183).

View larger version (9K): [in a new window]   Fig. 2B. —Graphs illustrate findings. Graphs show relation between existence of microemboli (white bars) and tumor size (A), maximum power (B), and treatment time (C). Black bars indicate number of patients with no microemboli. Analyses show difference between patients with microemboli and those with no microemboli is statistically significant for average tumor size (p = 0.0100), average maximum power (p = 0.0149), and average treatment time (p = 0.0183).

View larger version (8K): [in a new window]   Fig. 2C. —Graphs illustrate findings. Graphs show relation between existence of microemboli (white bars) and tumor size (A), maximum power (B), and treatment time (C). Black bars indicate number of patients with no microemboli. Analyses show difference between patients with microemboli and those with no microemboli is statistically significant for average tumor size (p = 0.0100), average maximum power (p = 0.0149), and average treatment time (p = 0.0183).

CiteULike

Complore

Connotea

Del.icio.us

Digg

Reddit

Technorati