Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy
Myocardial perfusion single photon emission computed tomography (SPECT) is a powerful test of evaluation for coronary artery disease, but subdiaphragmatic radiotracer activity often interferes with the interpretation of inferior wall findings. This study aims to evaluate the effectiveness of using s...
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Thieme Medical and Scientific Publishers Pvt. Ltd.
2016-04-01
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| Series: | World Journal of Nuclear Medicine |
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| Online Access: | http://www.thieme-connect.de/DOI/DOI?10.4103/1450-1147.173898 |
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| author | Daris Theerakulpisut Chanisa Chotipanich |
| author_facet | Daris Theerakulpisut Chanisa Chotipanich |
| author_sort | Daris Theerakulpisut |
| collection | DOAJ |
| description | Myocardial perfusion single photon emission computed tomography (SPECT) is a powerful test of evaluation for coronary artery disease, but subdiaphragmatic radiotracer activity often interferes with the interpretation of inferior wall findings. This study aims to evaluate the effectiveness of using software elimination of the subdiaphragmatic activity for the assessment of its efficacy in the correctness of image interpretation and the overall image quality of myocardial perfusion scintigraphy (MPS). MPS studies from January 2010 to October 2012 at our institution were reviewed. Thirty-two SPECT studies were included, all of which had significant subdiaphragmatic activity in the first scan and needed to be delayed to let the activity clear. Each scan was interpreted by using semiquantitative scoring in 17 segments according to the degree of radiotracer uptake. The first scan, which had interfering activity, was manipulated by masking out the unwanted activity with software native to our image processing software suite. The manipulated images were then compared with delayed images of the same patient, of which the subdiaphragmatic activity was spontaneously cleared with time. The first scan masked by software correlated with the delayed scan for myocardial regions supplied by the left circumflex (LCx) and right coronary artery (RCA), but not the left anterior descending (LAD). However, the quality of the masked scans was perceived by the observer to be better in terms of quality and ease of interpretation. Using software to mask out unwanted subdiaphragmatic activity has no detrimental effect on the interpretation of MPS images when compared with delayed scanning, but it can improve subjective scan quality and ease of interpretation. |
| format | Article |
| id | doaj-art-bbb9b8c18d164def813bbb243cca48f4 |
| institution | Kabale University |
| issn | 1450-1147 1607-3312 |
| language | English |
| publishDate | 2016-04-01 |
| publisher | Thieme Medical and Scientific Publishers Pvt. Ltd. |
| record_format | Article |
| series | World Journal of Nuclear Medicine |
| spelling | doaj-art-bbb9b8c18d164def813bbb243cca48f42025-08-20T03:48:36ZengThieme Medical and Scientific Publishers Pvt. Ltd.World Journal of Nuclear Medicine1450-11471607-33122016-04-0115029610110.4103/1450-1147.173898Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphyDaris Theerakulpisut0Chanisa Chotipanich1Department of Radiology, Division of Nuclear Medicine, Khon Kaen University, Khon Kaen, ThailandDivision of Nuclear Medicine, National Cyclotron and PET Centre, Chulabhorn Hospital, Bangkok, ThailandMyocardial perfusion single photon emission computed tomography (SPECT) is a powerful test of evaluation for coronary artery disease, but subdiaphragmatic radiotracer activity often interferes with the interpretation of inferior wall findings. This study aims to evaluate the effectiveness of using software elimination of the subdiaphragmatic activity for the assessment of its efficacy in the correctness of image interpretation and the overall image quality of myocardial perfusion scintigraphy (MPS). MPS studies from January 2010 to October 2012 at our institution were reviewed. Thirty-two SPECT studies were included, all of which had significant subdiaphragmatic activity in the first scan and needed to be delayed to let the activity clear. Each scan was interpreted by using semiquantitative scoring in 17 segments according to the degree of radiotracer uptake. The first scan, which had interfering activity, was manipulated by masking out the unwanted activity with software native to our image processing software suite. The manipulated images were then compared with delayed images of the same patient, of which the subdiaphragmatic activity was spontaneously cleared with time. The first scan masked by software correlated with the delayed scan for myocardial regions supplied by the left circumflex (LCx) and right coronary artery (RCA), but not the left anterior descending (LAD). However, the quality of the masked scans was perceived by the observer to be better in terms of quality and ease of interpretation. Using software to mask out unwanted subdiaphragmatic activity has no detrimental effect on the interpretation of MPS images when compared with delayed scanning, but it can improve subjective scan quality and ease of interpretation.http://www.thieme-connect.de/DOI/DOI?10.4103/1450-1147.173898myocardial perfusion scintigraphypost-processing image manipulationsingle photon emission computed tomography myocardial perfusion imagingsubdiaphragmatic activity |
| spellingShingle | Daris Theerakulpisut Chanisa Chotipanich Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy World Journal of Nuclear Medicine myocardial perfusion scintigraphy post-processing image manipulation single photon emission computed tomography myocardial perfusion imaging subdiaphragmatic activity |
| title | Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy |
| title_full | Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy |
| title_fullStr | Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy |
| title_full_unstemmed | Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy |
| title_short | Comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy |
| title_sort | comparison between postprocessing software and repeated scanning to eliminate subdiaphragmatic activity in myocardial perfusion scintigraphy |
| topic | myocardial perfusion scintigraphy post-processing image manipulation single photon emission computed tomography myocardial perfusion imaging subdiaphragmatic activity |
| url | http://www.thieme-connect.de/DOI/DOI?10.4103/1450-1147.173898 |
| work_keys_str_mv | AT daristheerakulpisut comparisonbetweenpostprocessingsoftwareandrepeatedscanningtoeliminatesubdiaphragmaticactivityinmyocardialperfusionscintigraphy AT chanisachotipanich comparisonbetweenpostprocessingsoftwareandrepeatedscanningtoeliminatesubdiaphragmaticactivityinmyocardialperfusionscintigraphy |