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Endorectal surface coil MR imaging of prostatic carcinoma with the inversion‐recovery sequence
Author(s) -
Parivar Farhad,
Rajanayagam Vasanthan,
Waluch Victor,
Eto Ross T.,
Jones Lawrence W.,
Ross Brian D.
Publication year - 1991
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880010607
Subject(s) - magnetic resonance imaging , electromagnetic coil , prostate , prostate cancer , carcinoma , medicine , nuclear medicine , radiology , nuclear magnetic resonance , materials science , pathology , cancer , physics , quantum mechanics
The value of inversion‐recovery (IR) sequences in the diagnosis and staging of prostatic carcinoma with magnetic resonance (MR) imaging was studied. Twenty‐six patients with carcinoma of the prostate were imaged at 1.5 T with an endorectal surface coil and with a variety of IR sequences and a set of spin‐echo (SE) sequences for comparison. Ex vivo prostate specimens were imaged again at the same field strength. The two images were correlated with histologic sections. Cancer was identified with MR imaging in 96% of patients. Of the tumors more than 4 mm in diameter, 87% were identified on T2‐weighted SE images, whereas only 26% were identified on IR images. However, IR images may be more useful in local staging of carcinoma. Gross capsular infiltration was present in only two patients; however, it was detectable (and excluded in five other patients) by means of IR images. It was not detectable on SE images. The high quality of images obtained with the endorectal coil was confirmed. The authors conclude that addition of the IR sequence to MR imaging with the endorectal coil may improve the usefulness of this examination.