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Titolo:
Left-to-right cardiac shunts: Comparison of measurements obtained with MR velocity mapping and with radionuclide angiography
Autore:
Arheden, H; Holmqvist, C; Thilen, U; Hanseus, K; Bjorkhem, G; Pahlm, O; Laurin, S; Stahlberg, F;
Indirizzi:
Univ Lund Hosp, Dept Clin Physiol, S-22185 Lund, Sweden Univ Lund Hosp Lund Sweden S-22185 pt Clin Physiol, S-22185 Lund, Sweden Univ Lund Hosp, Dept Radiol, S-22185 Lund, Sweden Univ Lund Hosp Lund Sweden S-22185 sp, Dept Radiol, S-22185 Lund, Sweden Univ Lund Hosp, Dept Cardiol, S-22185 Lund, Sweden Univ Lund Hosp Lund Sweden S-22185 p, Dept Cardiol, S-22185 Lund, Sweden Univ Lund Hosp, Dept Pediat Med, S-22185 Lund, Sweden Univ Lund Hosp Lund Sweden S-22185 Dept Pediat Med, S-22185 Lund, Sweden
Titolo Testata:
RADIOLOGY
fascicolo: 2, volume: 211, anno: 1999,
pagine: 453 - 458
SICI:
0033-8419(199905)211:2<453:LCSCOM>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONGENITAL HEART-DISEASE; CINE MAGNETIC-RESONANCE; FLOW MEASUREMENTS; QUANTIFICATION; ANGIOCARDIOGRAPHY; BLOOD;
Keywords:
atrial septal defect; heart, flow dynamics; heart, MR; heart, radionuclide studies; magnetic resonance (MR), vascular studies; pulmonary veins; ventricular septal defect;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Arheden, H Univ Lund Hosp, Dept Clin Physiol, S-22185 Lund, Sweden Univ Lund Hosp Lund Sweden S-22185 siol, S-22185 Lund, Sweden
Citazione:
H. Arheden et al., "Left-to-right cardiac shunts: Comparison of measurements obtained with MR velocity mapping and with radionuclide angiography", RADIOLOGY, 211(2), 1999, pp. 453-458

Abstract

PURPOSE: To investigate the agreement between two noninvasive methods, magnetic resonance (MR) velocity mapping and first-pass radionuclide angiography, to quantify the pulmonary-to-systemic blood flow ratio (QP/QS) in adults, adolescents, and children with left-to-right cardiac shunts. MATERIALS AND METHODS: The accuracy and precision of MR velocity mapping were studied in 12 control subjects (six men, six women) and in a phantom. MR velocity mapping and radionuclide angiography were performed on the same day in 24 patients (16 adults, two adolescents, six children; five male patients, 19 female patients). RESULTS: The mean error in QP/QS at MR velocity mapping in phantom experiments was -1% +/- 1 (mean +/- SD). In control subjects, QP/QS at MR velocitymapping was 1.03 +/- 0.03, and the cardiac index war 3.1 L/min/m(2) +/- 0.2 and 3.2 L/min/m(2) +/- 0.3 for women and men, respectively. In patients, QP/QS at radionuclide angiography was 14% +/- 13, higher than at MR velocity mapping. Interobserver variability was four times higher for radionuclideangiography compared with MR velocity mapping, 0% +/- 16 versus 0% +/- 4 (n = 12). The difference between repeated MR flow measurements in the same vessel was -1% +/- 5 (n = 36). CONCLUSION: The data suggest that MR velocity mapping is accurate and precise for measurements of shunt size over the whole range of possible QP/QS values.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 15:11:47