Departmental Papers (BE)

Document Type

Journal Article

Date of this Version

11-2007

Abstract

Rationale and Objectives

Needle biopsy is currently the only way to confirm prostate cancer. To increase prostate cancer diagnostic rate, needles are expected to be deployed at suspicious cancer locations. High contrast MR imaging provides a powerful tool for detecting suspicious cancerous tissues. To do this, MR appearances of cancerous tissue should be characterized and learned from a sufficient number of prostate MR images with known cancer information. However, ground-truth cancer information is only available in histological images. Therefore, it is necessary to warp ground-truth cancerous regions in histological images to MR images by a registration procedure. The objective of this paper is to develop a registration technique for aligning histological and MR images of the same prostate.

Material and Methods

Five pairs of histological and T2-weighted MR images of radical prostatectomy specimens are collected. For each pair, registration is guided by two sets of correspondences that can be reliably established on prostate boundaries and internal salient blob-like structures of histological and MR images.

Results

Our developed registration method can accurately register histological and MR images. It yields results comparable to manual registration, in terms of landmark distance and volume overlap. It also outperforms both affine registration and boundary-guided registration methods.

Conclusions

We have developed a novel method for deformable registration of histological and MR images of the same prostate. Besides the collection of ground-truth cancer information in MR images, the method has other potential applications. An automatic, accurate registration of histological and MR images actually builds a bridge between in vivo anatomical information and ex vivo pathological information, which is valuable for various clinical studies.

Comments

Yiqiang Zhan, Yangming Ou, Michael Feldman, John Tomaszeweski, Christos Davatzikos, Dinggang Shen. "Registering Histologic and MR Images of Prostate for Image-based Cancer Detection". Academic Radiology, 14 (11): 1367-1381. (2007).

URL: http://dx.doi.org/10.1016/j.acra.2007.07.018

Keywords

Prostate cancer, Histological image, MR image, Biopsy, Deformable registration

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Date Posted: 24 August 2009

This document has been peer reviewed.