Prostate MRI Technique

Mata, Lidia Alcalá; Berbís, M. Álvaro; Alcalá, Antonio Luna

doi:10.1007/978-3-319-61786-2_1

Cited by 1 publication

(1 citation statement)

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(7) T1WI can illustrate the external outline of the prostate gland, distinguishing the prostate from the pelvic muscles and periprostatic adipose tissue; however, imaging of the lesions within the gland is challenging, hindering the diagnosis of lymph node and bone metastases. (8)(9)(10) T2WI provide excellent soft-tissue contrast, allowing for the assessment of peritoneal involvement, and invasion in seminal vesicles and other adjacent tissues; (9)(10)(11) hence, T2WI MRI is currently the most promising method for PCa imaging. (2) High intra-target dose delivery in multifocal, non-uniform prostate tumors can improve local tumor control and patient prognosis.…”

Section: Introductionmentioning

confidence: 99%

Consistency Study of Multiparametric Magnetic Resonance and Computed Tomography Targeting in Targeted Radiotherapy for Prostate Cancer

Xu¹,

Li²,

Fu³

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: To compare the difference of location by computed tomography (CT) and multiparametric magnetic resonance imaging (mpMRI) on the target delineation and volume for organs at risk (OARs) among patients with prostate cancer. Methods: T1-weighted imaging (T1WI), T2-weighted imaging (T2WI), and CT were performed among 11 patients who received radiotherapy for prostate cancer at our center between August 2018 and December 2019. The target areas were delineated using the Eclipse system, and the radiotherapy plans were made based on the treatment planning system (TPS) to compare target volume and dose-volume histogram (DVH) relative to rectum and bladder. Results: The clinical target volume (CTV) of T1WI and T2WI decreased by 18.8% (P=0.001) and 22.72% (P=0.003), respectively, compared with CT. The planning target volume (PTV) on T1WI and T2WI were 20.45% (P=0.015) and 22.31% (P= 0.008) smaller than that defined by CT. There was no significant difference in either CTV or PTV between the areas outlined on T1WI and T2WI. The DVH resulting from CT and MRI comparisons showed that the rectum and bladder dose levels were lower with MRI images compared with CT. It should be noted that at the lateral directions, the range of outlining on T2WI sequence were significantly smaller than others. Conclusion: Target planning based on mpMRI (T1WI, T2WI) is more precise than CT, which can significantly reduce the range of the target area and the volume of rectum and bladder exposed to high levels of radiation, improve the fitness and radiographic accuracy of the target area, especially on T2WI.

show abstract