DFOV: Display field of view-- determines how much of the scan field of view is reconstructed into an image. DFOV can be less than or equal to the SFOV but cannot be more than the SFOV. High contrast resolution: The ability to distinguish sharp edges between small objects that differ greatly in density. Also called spatial resolution.

This is a video about SFOV (Scanner Field of View), Reconstructed Field of View and the more common Display Field of View (DFOV) for CT scanning (computed tomography). These are used slightly...

图中绿色显示范围就是扫描显示野（dfov） 红色显示范围就是扫描野（sfov） 扫描野大于等于显示野（dfov≤sfov）。 当发现图像显示窗口中图像显示不全，我们就可以在后重建中将图像重建出来。但这只限于视野方向的不全，扫描范围不全是无法重建出来的。

DFOV: Calculate the DFOV for an image with a 320^2 matrix and a pixel dimention of .75 x .75 mm. The formula for DFOV is pixel dimension x the matrix size. 320 x .75 mm = 240mm or 24 cm DFOV. Flow Rate: A total volume of 125ml of an iodinated contrast agent is administered intravenously via automatic injector in 50 sec.

Once the projection data have been acquired, operators can choose the size of the reconstruction field of view (FOV). The majority of CT images have a reconstructed FOV that is set equal to the size of the patient being imaged, as depicted by the two left images in Figure G.

(DFOV / RFOV) The display field of view is a selectable scan factor measured from the center of the patient to the most distant located edge of the patient. (RFOV) The reconstruction field of view is the size of the scan field of view (SFOV) that is reconstructed to form a CT image.

CT Basics Dianna Cody, Ph.D. Professor & Chief, Radiologic Physics U.T. M.D. Anderson Cancer Center “Pure” CT • Information regarding attenuation correction with CT AND ... • Image zoom Voxel size = DFOV/512 512 50 cm DFOV X-Y Voxel Size 512 pixels pixels Pixel = ~ 1 mm

Nov 2, 2023 · In-plane resolution depends on matrix size and display field of view (DFOV). Matrix size determines pixel size, and adjusting DFOV changes to image and pixel dimensions. Larger DFOV leads to larger pixels and lower spatial detail. Pixel size affects accuracy, with smaller pixels reducing volume averaging and enhancing spatial resolution.

Dec 7, 2016 · For most patients, it is possible to scan both ankles simultaneously within a 22cm DFOV, allowing a side by side comparison of the symptomatic ankle with the normal ankle. For the CT of the foot, the DFOV should be enlarged to include the entire forefoot “the metatarsals and phalanges” along with the hindfoot and midfoot.

Jan 14, 2016 · The field of view (FOV) is defined as the dimensions of the exact anatomic region included in a scan. In MR, the FOV may be square or asymmetric. Depending on the vendor, it is specified in millimeters or centimeters. The FOV is also the mathematical product of the acquisition matrix and the pixel dimensions.