Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography.
OBJECTIVE: We evaluated the diagnostic accuracy of three-dimensional (3D) MR coronary angiography with the navigator technique for the detection of coronary artery stenoses in comparison with that of conventional radiographic angiography. SUBJECTS AND METHODS: Thirty patients with coronary artery di...
| Hlavní autoři: | , , , , , , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
1999
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| _version_ | 1826283276060327936 |
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| author | Sandstede, J Pabst, T Beer, M Geis, N Kenn, W Neubauer, S Hahn, D |
| author_facet | Sandstede, J Pabst, T Beer, M Geis, N Kenn, W Neubauer, S Hahn, D |
| author_sort | Sandstede, J |
| collection | OXFORD |
| description | OBJECTIVE: We evaluated the diagnostic accuracy of three-dimensional (3D) MR coronary angiography with the navigator technique for the detection of coronary artery stenoses in comparison with that of conventional radiographic angiography. SUBJECTS AND METHODS: Thirty patients with coronary artery disease were examined with an ECG-triggered 3D fast low-angle shot sequence using retrospective respiratory gating and the navigator technique on a 1.5-T MR scanner. The data set was evaluated as a 3D view with a surface rendering technique. RESULTS: Imaging of the proximal coronary arteries was possible in all patients. The average visualized lengths of the left main, left anterior descending, left circumflex, and right coronary arteries were 1.9+/-0.5 cm (mean +/- SD), 5.2+/-2.3 cm, 4.2+/-1.9 cm, and 5.2+/-2.5 cm, respectively. Irregular breathing reduced image quality in seven of the 30 patients, making diagnosis of stenoses impossible. In the 77% of patients whose examinations resulted in high-quality images, the sensitivity and specificity for detection of significant stenoses and occlusions in all four main coronary arteries were 81% and 89%, respectively. CONCLUSION: The navigator technique allows reproducible imaging of the proximal course of coronary arteries. This technique obviates breath-hold studies, thus allowing more patients to be examined. In patients whose examinations resulted in high-quality images, significant coronary artery lesions could be seen. However, for widespread clinical use, further technical improvement is necessary to increase sensitivity and specificity. |
| first_indexed | 2024-03-07T00:56:28Z |
| format | Journal article |
| id | oxford-uuid:883ed7eb-1c8b-41c8-9d92-6ec2ae837c26 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:56:28Z |
| publishDate | 1999 |
| record_format | dspace |
| spelling | oxford-uuid:883ed7eb-1c8b-41c8-9d92-6ec2ae837c262022-03-26T22:15:57ZThree-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:883ed7eb-1c8b-41c8-9d92-6ec2ae837c26EnglishSymplectic Elements at Oxford1999Sandstede, JPabst, TBeer, MGeis, NKenn, WNeubauer, SHahn, DOBJECTIVE: We evaluated the diagnostic accuracy of three-dimensional (3D) MR coronary angiography with the navigator technique for the detection of coronary artery stenoses in comparison with that of conventional radiographic angiography. SUBJECTS AND METHODS: Thirty patients with coronary artery disease were examined with an ECG-triggered 3D fast low-angle shot sequence using retrospective respiratory gating and the navigator technique on a 1.5-T MR scanner. The data set was evaluated as a 3D view with a surface rendering technique. RESULTS: Imaging of the proximal coronary arteries was possible in all patients. The average visualized lengths of the left main, left anterior descending, left circumflex, and right coronary arteries were 1.9+/-0.5 cm (mean +/- SD), 5.2+/-2.3 cm, 4.2+/-1.9 cm, and 5.2+/-2.5 cm, respectively. Irregular breathing reduced image quality in seven of the 30 patients, making diagnosis of stenoses impossible. In the 77% of patients whose examinations resulted in high-quality images, the sensitivity and specificity for detection of significant stenoses and occlusions in all four main coronary arteries were 81% and 89%, respectively. CONCLUSION: The navigator technique allows reproducible imaging of the proximal course of coronary arteries. This technique obviates breath-hold studies, thus allowing more patients to be examined. In patients whose examinations resulted in high-quality images, significant coronary artery lesions could be seen. However, for widespread clinical use, further technical improvement is necessary to increase sensitivity and specificity. |
| spellingShingle | Sandstede, J Pabst, T Beer, M Geis, N Kenn, W Neubauer, S Hahn, D Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography. |
| title | Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography. |
| title_full | Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography. |
| title_fullStr | Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography. |
| title_full_unstemmed | Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography. |
| title_short | Three-dimensional MR coronary angiography using the navigator technique compared with conventional coronary angiography. |
| title_sort | three dimensional mr coronary angiography using the navigator technique compared with conventional coronary angiography |
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