| MRI and MRA in treatment planning of subdiaphragmatic radiation therapy. | |
| | |
MedLine Citation:
|
PMID: 1729289 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Radiotherapy treatment planning needs optimum definition of target volume in its relative position to normal tissue. The aim of our study was to achieve individual field definition in subdiaphragmatic radiotherapy by visualization of the target volume using fast, breath-held MRI and MR angiography. A modified rapid acquisition SE technique (SE 150/10) was used to obtain a coronal image within a 14 s breath-holding period, displaying kidneys, spleen, and lumbar spine on one slice. Coronal MR angiography acquisition in breath-hold technique was performed using a sequential FLASH-2D sequence (FLASH-2D 30/10/30 degrees). For reconstruction of the MR angiogram in coronal view, we used a maximum intensity projection algorithm. A computer program superimposed the MR angiogram onto the MR image. Correct magnification of the superposition image allowed direct projection onto the simulation film. Problems of distortion and different projection techniques were taken into account and quantified by phantom measurements. The localization error measured in a reference plane was less than 5 mm within a radius of 140 mm. Fourteen cases of Hodgkin disease and non-Hodgkin lymphomas were treated employing the novel technique. By superposition of the MR image and the MR angiogram, demarcation of vascular architecture from parenchymatous organs was achieved. Projection of the MR superposition onto the simulation film yielded accurate and convenient field definition using noninvasive imaging techniques. |
| | |
Authors:
|
M Müller-Schimpfle; G Layer; A Köster; G Brix; B Kimmig; H U Kauczor; M Wannenmacher; W Semmler; G van Kaick |
Related Documents
:
|
15134599 - Use of imaging studies in the diagnosis of vasculitis. 19746809 - Multimodality vascular imaging phantoms: a new material for the fabrication of realisti... 21947249 - Reliability of mri findings in candidates for lumbar disc prosthesis. 11037709 - Diagnostic importance of magnetic resonance angiography in arterial reconstructive surg... 17211299 - Comparative analysis between transcranial color duplex sonography and magnetic resonanc... 20479649 - Intravascular functional maps of common neurovascular lesions derived from volumetric 4... 6603109 - Ct of the pulmonary ligament. 10369359 - Mr spectroscopy of bilateral thalamic gliomas. 12083589 - Destructive posttraumatic subtalar synovitis. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of computer assisted tomography Volume: 16 ISSN: 0363-8715 ISO Abbreviation: J Comput Assist Tomogr Publication Date: 1992 Jan-Feb |
Date Detail:
|
Created Date: 1992-02-11 Completed Date: 1992-02-11 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 7703942 Medline TA: J Comput Assist Tomogr Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 110-9 Citation Subset: IM |
Affiliation:
|
Institute of Radiology and Pathophysiology, German Cancer Research Center, Heidelberg. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Abdomen
/
blood supply Blood Vessels / pathology* Diaphragm Hodgkin Disease / radiotherapy Humans Lymphatic Irradiation* / methods Magnetic Resonance Imaging* / methods Models, Structural |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Medullary CT enhancement in acute renal artery occlusion.
Next Document: Characterization of musculoskeletal masses using dynamic Gd-DTPA enhanced spin-echo MRI.