Efficacy of high-energy collimator for sentinel node lymphoscintigraphy of early breast cancer patients

Aryana, K. and Gholizadeh, M. and Momennezhad, M. and Naji, M. and Aliakbarian, M. and Forghani, M. N. and Sadeghi, R. (2012) Efficacy of high-energy collimator for sentinel node lymphoscintigraphy of early breast cancer patients. Radiology and Oncology, 46 (1). pp. 75-80.

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Abstract

Introduction. Lymphoscintigraphy is an important part of sentinel node mapping in breast cancer patients. Sometimes star shaped artefacts due to septal penetration can be problematic during imaging. In the current study, we evaluated the possibility of high energy (HE) collimators use for lymphoscintigraphy. Patients and methods. Twenty patients with early breast carcinoma were included. Thirty minutes after radiotracer injection (99mTc-antimony sulphide colloid), anterior and lateral images were acquired using a dual head gamma camera equipped with a parallel hole low energy high resolution (LEHR) collimator on one head and HE collimator on another head. All images were reviewed by two nuclear medicine specialists regarding detectability and number of axillary sentinel nodes and presence of star artefact.Results. All images taken by LEHR collimators showed star artefact of the injection site. No image taken by HE collimator showed this effect. In two patients the sentinel node was visible only by HE collimator. Tumour location in both of these patients was in the upper lateral quadrant and both had history of excisional biopsy. In two patients additional sentinel node was visible adjacent to the first one only on the LEHR images. Conclusions. HE collimators can be used for sentinel lymph node mapping and lymphoscintigraphy of the breast cancer patients. This collimator can almost eliminate star-shaped artefacts due to septal penetration which can be advantageous in some cases. However, to separate two adjacent sentinel nodes from each other LEHR collimators perform better.

Item Type: Article
Additional Information: Cited By :4 Export Date: 16 February 2020 CODEN: RONCE Correspondence Address: Sadeghi, R.; Nuclear Medicine Research Center, Imam Reza Hospital, Mashhad University of Medical Sciences, Ebn Sina Street, Mashhad, Iran; email: sadeghir@mums.ac.ir
Uncontrolled Keywords: collimator HEAP high energy all purpose LEHR low energy high resolution lymphoscintigraphy sentinel node technetium sulfur colloid tc 99m adult aged article artifact biopsy breast cancer cancer patient clinical article early breast cancer early cancer human human tissue injection site low energy high resolution collimator medical specialist scintillation camera sentinel node lymphoscintigraphy
Subjects: WP Gynecology
QZ pathology-neoplasms-Genetics
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib5 lib5
Date Deposited: 12 May 2020 08:31
Last Modified: 12 May 2020 08:31
URI: http://eprints.mums.ac.ir/id/eprint/18757

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