skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Role of Time-Resolved MRA for Post-treatment Assessment of Pulmonary Arteriovenous Malformations: A Pictorial Essay

Abstract

No abstract prepared.

Authors:
; ; ;  [1];  [2];  [1];  [3];  [1]
  1. Nagoya City University Graduate School of Medical Sciences, Department of Radiology (Japan)
  2. Nagoya City East Medical Center, Department of Radiology (Japan)
  3. Kariya-Toyota General Hospital, Department of Radiology (Japan)
Publication Date:
OSTI Identifier:
22642481
Resource Type:
Journal Article
Resource Relation:
Journal Name: Cardiovascular and Interventional Radiology; Journal Volume: 39; Journal Issue: 7; Other Information: Copyright (c) 2016 Springer Science+Business Media New York and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE); http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BIOMEDICAL RADIOGRAPHY; LUNGS; MALFORMATIONS; TIME RESOLUTION; VASCULAR DISEASES

Citation Formats

Kawai, Tatsuya, E-mail: tatsuyak@med.nagoya-cu.ac.jp, Shimohira, Masashi, E-mail: mshimohira@gmail.com, Ohta, Kengo, E-mail: rug-by-no8@yahoo.co.jp, Hashizume, Takuya, E-mail: tky300@gmail.com, Muto, Masahiro, E-mail: malodheep1190@gmail.com, Suzuki, Kazushi, E-mail: eightetudes@gmail.com, Kurosaka, Kenichiro, E-mail: kurosaka0@gmail.com, and Shibamoto, Yuta, E-mail: yshiba@med.nagoya-cu.ac.jp. The Role of Time-Resolved MRA for Post-treatment Assessment of Pulmonary Arteriovenous Malformations: A Pictorial Essay. United States: N. p., 2016. Web. doi:10.1007/S00270-016-1325-2.
Kawai, Tatsuya, E-mail: tatsuyak@med.nagoya-cu.ac.jp, Shimohira, Masashi, E-mail: mshimohira@gmail.com, Ohta, Kengo, E-mail: rug-by-no8@yahoo.co.jp, Hashizume, Takuya, E-mail: tky300@gmail.com, Muto, Masahiro, E-mail: malodheep1190@gmail.com, Suzuki, Kazushi, E-mail: eightetudes@gmail.com, Kurosaka, Kenichiro, E-mail: kurosaka0@gmail.com, & Shibamoto, Yuta, E-mail: yshiba@med.nagoya-cu.ac.jp. The Role of Time-Resolved MRA for Post-treatment Assessment of Pulmonary Arteriovenous Malformations: A Pictorial Essay. United States. doi:10.1007/S00270-016-1325-2.
Kawai, Tatsuya, E-mail: tatsuyak@med.nagoya-cu.ac.jp, Shimohira, Masashi, E-mail: mshimohira@gmail.com, Ohta, Kengo, E-mail: rug-by-no8@yahoo.co.jp, Hashizume, Takuya, E-mail: tky300@gmail.com, Muto, Masahiro, E-mail: malodheep1190@gmail.com, Suzuki, Kazushi, E-mail: eightetudes@gmail.com, Kurosaka, Kenichiro, E-mail: kurosaka0@gmail.com, and Shibamoto, Yuta, E-mail: yshiba@med.nagoya-cu.ac.jp. 2016. "The Role of Time-Resolved MRA for Post-treatment Assessment of Pulmonary Arteriovenous Malformations: A Pictorial Essay". United States. doi:10.1007/S00270-016-1325-2.
@article{osti_22642481,
title = {The Role of Time-Resolved MRA for Post-treatment Assessment of Pulmonary Arteriovenous Malformations: A Pictorial Essay},
author = {Kawai, Tatsuya, E-mail: tatsuyak@med.nagoya-cu.ac.jp and Shimohira, Masashi, E-mail: mshimohira@gmail.com and Ohta, Kengo, E-mail: rug-by-no8@yahoo.co.jp and Hashizume, Takuya, E-mail: tky300@gmail.com and Muto, Masahiro, E-mail: malodheep1190@gmail.com and Suzuki, Kazushi, E-mail: eightetudes@gmail.com and Kurosaka, Kenichiro, E-mail: kurosaka0@gmail.com and Shibamoto, Yuta, E-mail: yshiba@med.nagoya-cu.ac.jp},
abstractNote = {No abstract prepared.},
doi = {10.1007/S00270-016-1325-2},
journal = {Cardiovascular and Interventional Radiology},
number = 7,
volume = 39,
place = {United States},
year = 2016,
month = 7
}
  • The purpose of this report is to discuss the different mechanisms of reperfusion of pulmonary arteriovenous malformations (PAVMs) after embolization. Transcatheter embolotherapy is currently the first-line treatment of PAVMs to prevent neurologic complications or pulmonary hemorrhage. Initial good results can be expected but we report three cases of reperfusion of complex large PAVMs after coil embolization. After adequate embolization, reperfusion of PAVMs may occur by several mechanisms including recanalization of embolized arteries, recruitment of normal arterial branches, growth or enlargement and development of a systemic arterial supply.
  • The purpose was to evaluate the clinical and radiological long-term results of embolization of pulmonary arteriovenous malformations (PAVMs) and to assess the quality of life after treatment. A clinical follow-up was undertaken after 67 months (mean) in 35 consecutive patients with 106 PAVMs. Outcome parameters at follow-up were PaO{sub 2} and patients' satisfaction. During follow-up, the patients had a clinical examination, measurement of arterial blood gases, chest X-ray, and contrast echocardiography performed and were asked to fill in a questionnaire exploring experience of the treatment and subjective effect of treatment on physical and social functioning. A significant rise in oxygenationmore » of the blood after embolization was measured. In 77% of the patients symptoms improved, and 71% felt better performance. In eight patients, one of the PAVMs was found insufficiently embolized or recanalized at follow-up angiography and therefore were re-embolized. Endovascular embolization for PAVMs is effective. Clinical parameters and quality of life improved significantly. Regular clinical controls after therapy are necessary to discover insufficiently embolized, recanalized or new PAVMs.« less
  • Long-term follow-up results after embolization of 13 pulmonary arteriovenous malformations in 10 patients by use of 14 detachable silicone balloons are given. Patients were followed for a mean of 99 months (range, 63-123 months) with chest x-rays and for a mean of 62 months (range, 3-101 months) with pulmonary angiography. Fifty-four percent of the balloons were deflated at latest radiographic chest film follow-up, but at pulmonary angiographic follow-up all embolized malformations were without flow irrespective of whether or not the balloons were visible. Detachable silicone balloons are not available anymore, but use of these balloons for embolization of pulmonary arteriovenousmore » malformations has been shown to be a safe and precise method, with immediate occlusion of the feeding artery and with long-lasting occlusion, even though many balloons deflate with time, leaving a fibrotic scar replacing the pulmonary arteriovenous malformation. No case of recanalization has been discovered, and these results seem to justify a reduced number of controls of these balloon-embolized malformations.« less
  • Purpose. To evaluate the feasibility and efficacy of a modified metallic coil embolization technique for pulmonary arteriovenous malformations (PAVMs) using coil anchors and occlusion balloon catheters. Methods. Five consecutive female patients with 6 PAVMs were included in the present study. One of the 6 PAVMs was of the complex type with four feeding arteries. An occlusion balloon catheter was inserted into the feeding artery as close to the venous sac as possible. The coil anchor, which was a simple W-shaped bent stainless steel wire with two markers at each end, was deployed prior to embolization to prevent the systemic migrationmore » of embolic materials. Then, metallic coils were deployed around the coil anchors under inflow stoppage using the inflated occlusion balloon catheter. In the complex-type PAVM, the main feeder was occluded by this technique and the other three small feeders were embolized with metallic coils only. Results. In all 5 cases, occlusion balloon catheters could be inserted into the feeding arteries just proximal to the venous sacs, coil anchors were easily deployed, and complete occlusion was achieved without any migration of metallic coils or paradoxical embolism during the procedure. Conclusions. The modified metallic coil embolization technique with coil anchors and occlusion balloon catheters was feasible and considered to be useful in preventing procedure-related complications.« less
  • No abstract prepared.