2000
DOI: 10.1259/bjr.73.869.10884742
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Parametric mapping of scaled fitting error in dynamic susceptibility contrast enhanced MR perfusion imaging.

Abstract: The purpose of this study was to examine the benefits of routine generation of a parametric image of scaled curve fitting errors in the analysis of dynamic susceptibility contrast enhanced MR perfusion imaging. We describe the scaled fitting error (SFE), which reflects the magnitude of potential errors in the estimation of perfusion parameters from dynamic susceptibility contrast enhanced studies. The SFE is the root-mean-square error between the observed values in the time course of change of effective transv… Show more

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Cited by 17 publications
(14 citation statements)
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“…Also depicted in Fig. 3 is a map of the corresponding residual fitting errors (SFE) (22), as well as the time course of the averaged ASL data in cortical gray matter. Fits of the experimental data based on the FPSCS model (solid line) or the FPOCK model (dashed line) are also shown for comparison.…”
Section: Resultsmentioning
confidence: 99%
“…Also depicted in Fig. 3 is a map of the corresponding residual fitting errors (SFE) (22), as well as the time course of the averaged ASL data in cortical gray matter. Fits of the experimental data based on the FPSCS model (solid line) or the FPOCK model (dashed line) are also shown for comparison.…”
Section: Resultsmentioning
confidence: 99%
“…Both single or multishot echo planar imaging (EPI) and fast low angle shot (FLASH) can achieve this temporal resolution, but vary in the number of slices that may be acquired: EPI sequences can typically acquire up to 15 slices (matrix resolution 1286128 or greater) within this time frame [14,15]. Three-dimensional volumetric sequences have been employed in an attempt to increase volume coverage at the expense of either spatial or temporal resolution [16].…”
Section: Dynamic Susceptibility Contrast Mrimentioning
confidence: 99%
“…To assess the goodness of the fit, scaled fitting error (SFE; Ref. 16) was measured in all fitting procedures. After performing these fits, the ''best'' t 0 was chosen to be that from the fit with the lowest SFE value.…”
Section: ½2mentioning
confidence: 99%
“…An automated simplex minimization procedure (15) was used for fitting. To assess the goodness of the fit, SFEs (16) were produced in all fitting procedures. Figure 1 shows the simulated AIF and the theoretical C t (t) tissue curves generated using Eq.…”
mentioning
confidence: 99%