Eunhee Kim MD, Presenter: Nothing to Disclose

Sung Tae Kim MD, Abstract Co-Author: Nothing to Disclose

Hyung Jin Kim MD, PhD, Abstract Co-Author: Nothing to Disclose

Han Bee Lee MD, Abstract Co-Author: Nothing to Disclose

Jin Wook Choi MD, Abstract Co-Author: Nothing to Disclose

Keon Ha Kim, Abstract Co-Author: Nothing to Disclose

Pyoung Jeon MD, Abstract Co-Author: Nothing to Disclose

Hong Sik Byun MD, Abstract Co-Author: Nothing to Disclose

To access whether the dynamic gadolinium-enhanced imaging with simultaneous acquisition of coronal and sagittal planes improves diagnostic accuracy of pituitary microadenomas compared with the dynamic coronal images alone.

Fifty-five patients with pituitary microadenoma, confirmed histopathologically or clinically, were included in this study,. All underwent 3-T sella magnetic resonance (MR) images including dynamic enhanced sequence with simultaneous acquisition of coronal and sagittal planes after single bolus injection of gadolinium. Each coronal, sagittal images and a combination of two planes was evaluated independently by two neuroradiologists in a blind fashion regarding the detection of pituitary microadenomas. According to the degree of lesion conspicuity, the lesions were divided into four scales, i.e. no (0) and possible (1), probable (2) and definite (3) delayed enhancing lesions. The lesions with probable and definite findings were considered as positive findings for the pituitary microadenoma. Accuracy of detection of the tumors on dynamic coronal, sagittal and combined coronal and sagittal images was calculated.

The average scales for detection of lesions of combined dynamic coronal and sagittal images, coronal, and sagittal images were 0.93, 0.84, and 0.75 respectively. The average scales of combined coronal and sagittal images were significantly higher than coronal image alone (p=0.024). Five of nine lesions which were negative on dynamic coronal images were detected on dynamic sagittal images. The accuracy of combined coronal and sagittal images was 92.73%, in contrast to those of dynamic coronal and sagittal images were 83.64% and 74.55%.

The dynamic gadolinium-enhanced MR imaging with simultaneous acquisition of coronal and sagittal planes was more accurate for detection of pituitary microadenomas than routinely used dynamic coronal images.

The supplementary dynamic sagittal images with simultaneous acquisition technique can improve the accuracy for detection of pituitary microadenomas without additional injection of contrast material.

Kim, E, Kim, S, Kim, H, Lee, H, Choi, J, Kim, K, Jeon, P, Byun, H, Usefulness of the Dynamic Gadolinium-enhanced Magnetic Resonance Imaging with Simultaneous Acquisition of Coronal and Sagittal Planes for Detection of Pituitary Microadenomas.  Radiological Society of North America 2010 Scientific Assembly and Annual Meeting, November 28 - December 3, 2010 ,Chicago IL. http://archive.rsna.org/2010/9010159.html