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Stereotactic noninvasive volume measurement compared with
geometric measurement for indications and evaluation of gamma knife
treatment
del Valle R, Perez M, Ortiz J, Ruiz S, de Anda S, Jaramillo J, Martinez
M, Corona R, Vivas I, Facha T, Olmos R, Arrieta A, Estrada J
Gamma Radiosurgery Department and MRI Department, Hospital Medica Sur.
Mexico City, Mexico. rdvld@aol.com
Object. Volume estimation is one of the most important criteria in the
evaluation and follow up of radiosurgical treatments and outcomes; however,
several limitations are involved in the calculation estimation of target
volumes.
Methods. Retrospective and prospective studies were conducted to
evaluate the efficacy of a new noninvasive stereotactic method when it is
compared with geometric volume calculation of intracranial tumors for
planning stereotactic radiosurgery treatment as well as for follow up and
outcome evaluation.
Two equations were created that permit comparison of the
calculated and measured volumes.
These equations took linear and quadratic
forms, respectively.
Volume estimation using the stereotactic approach
compared with traditional volume calculation gave more accurate results
regardless of the shape and size of the lesion.
Conclusions. The use of
stereotactic volume calculation is highly recommended in planning, follow
up, and determination of the outcome in patients participating in
radiosurgical treatment and should lead to more uniform reports of the
response to treatment.
PMID: 15662797 [PubMed - indexed for MEDLINE]
Source: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15662797
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