{"id":214,"date":"2023-07-17T13:23:34","date_gmt":"2023-07-17T09:53:34","guid":{"rendered":"https:\/\/behineparto.ir\/%d9%81%d8%a7%d9%86%d8%aa%d9%88%d9%85-%da%a9%db%8c%d9%81%db%8c%d8%aa-%d8%aa%d8%b5%d9%88%db%8c%d8%b1-%d8%b3%db%8c-%d8%aa%db%8c-%d8%a7%d8%b3%da%a9%d9%86\/"},"modified":"2026-01-06T14:39:31","modified_gmt":"2026-01-06T11:09:31","slug":"ct-image-quality-phantom","status":"publish","type":"post","link":"https:\/\/behineparto.ir\/en\/ct-image-quality-phantom\/","title":{"rendered":"CT Image Quality Phantom"},"content":{"rendered":"

The CT image quality phantom is designed and built with eight main cylinders to measure CT number accuracy, slice thickness accuracy, geometric accuracy, spatial resolution, point spread function (PSF), edge spread function (ESF), modulation transfer function (MTF), contrast resolution and uniformity.<\/p>\n

In this phantom, spatial resolution can be measured in terms of the number of cycles per unit length, the number of pairs of lines per unit length, and the PSF, ESF, and MTF. In addition, in the designed phantom, the spatial resolution can be measured up to 21 pairs of lines per centimeter. Also in this phantom, the contrast resolution consisted of six sets of cylinders with different contrasts and sizes.<\/p>\n

The CT image quality phantom is capable of evaluating a wide range of parameters affecting CT image quality. In addition to performing quality control tests, this phantom can be used to optimize noise and dose reduction techniques<\/p>\n

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Product Features\r\n\r\n1- CT Number Accuracy Measurement Module\r\n\r\n2- Section Thickness Measurement Accuracy Module\r\n\r\n3- Spatial Resolution Measurement Module (Cycles per Unit Length)<\/span><\/pre>\n
Point spread function measurement module, edge spread function, modulation transfer function<\/p>\n
\u00a0Spatial resolution measurement module (up to 21 line pairs\/mm)<\/p>\n
\u00a0Contrast resolution measurement module<\/p>\n
Geometric dimension accuracy measurement module<\/p>\n
\u00a0Image uniformity measurement module<\/p>\n
\u00a0Storage compartment<\/p>\n
Handle<\/p>\n
Horizontal level along the y-axis<\/p>\n
Horizontal level along the x-axis<\/p>\n
Feet<\/p>\n
Storage compartment door<\/p>\n
:Specifications of different CT scan quality control phantom modules<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n
CT number accuracy measurement module:<\/p>\n
\u00a0<\/strong><\/td>\n<\/tr>\n
Dimensions and structure<\/td>\nA cylindrical piece with a diameter of 198 mm, with eight cylinders with diameters of 25 mm, made of tissue-equivalent material.<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameters<\/td>\nAccuracy and repeatability of CT or Hounsfield numbers of tissue equivalent materials<\/p>\n
 <\/td>\n<\/tr>\n
Measurement range<\/td>\n <\/p>\n
numbers include:<\/p>\n
5\/4 + \u060c 106+ \u060c 72- \u060c 26- \u060c 89+ \u060c 123+ \u060c 951+ \u0648 997-<\/p>\n
 <\/td>\n<\/tr>\n
material<\/b><\/td>\nAcrylic and equivalent textured materials<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u00a0<\/strong><\/p>\n
\u00a0<\/strong><\/p>\n\n\n\n\n\n\n\n
Section thickness accuracy measurement module:<\/p>\n
\u00a0<\/strong><\/td>\n<\/tr>\n
Dimensions and structure<\/td>\nA cylindrical piece with a diameter of 198 mm consisting of four stainless steel wires at an angle of 23 degrees.<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameter<\/td>\nThe correct size of the thickness of the section<\/p>\n
 <\/td>\n<\/tr>\n
Measurement range<\/td>\nFrom one tenth to 15 mm<\/p>\n
 <\/td>\n<\/tr>\n
material<\/b><\/td>\nAcrylic body and stainless steel wire included<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
 <\/p>\n
 <\/p>\n\n\n\n\n\n\n\n
Spatial resolution measurement module (in terms of number of cycles per unit length):<\/p>\n
\u00a0<\/strong><\/td>\n<\/tr>\n
Dimensions and structure<\/td>\nA cylindrical piece with a diameter of 198 mm containing three sets of eight rows of holes of different diameters.<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameter<\/td>\nSpatial resolution in terms of number of cycles per unit length<\/p>\n
 <\/td>\n<\/tr>\n
Measurement range<\/td>\n <\/p>\n
diameter of the holes include<\/p>\n
75\/1 \u060c 5\/1 \u060c 25\/1 \u060c 1 \u060c 75\/0 \u060c 61\/0 \u060c 50\/0 \u0648 40\/0 eqaul to mm 86\/2\u060c 33\/3\u060c 4\u060c 5\u060c 67\/6\u060c 20\/8\u060c 10\u060c 5\/12<\/p>\n
Line pairs per centimeter<\/p>\n
 <\/td>\n<\/tr>\n
material<\/td>\nacrilyc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u00a0<\/strong><\/p>\n
 <\/p>\n
 <\/p>\n\n\n\n\n\n\n\n
Point Spread Function (PSF), Edge Spread Function (LSF), Modulation Transfer Function (MTF) Measurement Module:<\/p>\n
\u00a0<\/strong><\/td>\n<\/tr>\n
Dimensions and structure<\/td>\nA cylindrical piece with a diameter of 198 mm has a Teflon half-cylinder and an empty cylinder and a stainless steel wire with a diameter of 0.25 mm in the middle.<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameter<\/td>\nPSF\u060c LSF, MTF<\/p>\n
 <\/td>\n<\/tr>\n
Measurement range<\/td>\n <\/p>\n
From zero to one hundred percent for MTF<\/td>\n<\/tr>\n
material<\/b><\/td>\nacrylic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u00a0<\/strong><\/p>\n
 <\/p>\n
\u00a0<\/strong><\/p>\n
\u00a0<\/strong><\/p>\n\n\n\n\n\n\n\n
Spatial resolution measurement module (in terms of number of line pairs per unit length):<\/p>\n
\u00a0<\/strong><\/td>\n<\/tr>\n
Dimensions and structure<\/td>\n\n
A cylindrical piece with a diameter of 198 mm containing 21 sets of grooves of different widths<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameter<\/td>\n\n
Spatial resolution in terms of number of line pairs per unit length<\/p>\n
 <\/td>\n<\/tr>\n
Measurement range<\/td>\nFrom 1 to 21 number of line pairs per centimeter<\/td>\n<\/tr>\n
material<\/strong><\/td>\nacrylic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
 <\/p>\n
 <\/p>\n\n\n\n\n\n\n\n
Contrast resolution measurement module:<\/p>\n
\u00a0<\/strong><\/p>\n<\/td>\n<\/tr>\n
Dimensions and structure<\/td>\n\n
A cylindrical piece of acrylic with a diameter of 198 mm, consisting of six sets of cylinders with different contrasts and sizes, including three sets of cylinders around the perimeter with diameters of<\/p>\n
15 \u060c9 \u060c 8\u060c 7\u060c 6\u060c 5\u060c 4\u060c 3\u060c 2\u060c 1 \u0648 5\/.<\/p>\n
Three sets in the center with\u00a0 diameters<\/p>\n
\u00a09\u060c 7\u060c 5 , 3<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameter<\/td>\n <\/p>\n
 <\/td>\n<\/tr>\n
Measurement range<\/td>\nContrast resolution<\/p>\n
 <\/td>\n<\/tr>\n
material<\/b><\/td>\nAcrylic and fillers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u00a0<\/strong><\/p>\n
 <\/p>\n\n\n\n\n\n\n\n
Geometric accuracy measurement module:<\/p>\n
\u00a0<\/strong><\/td>\n<\/tr>\n
Dimensions and structure<\/td>\n\n
Cylindrical piece with diameter\u00a0198<\/p>\n
8holes with 4 circles in 6 diameter<\/p>\n
In hypothetical positions of the clock<\/p>\n
\u00a012\u060c 3\u060c 6 , 9<\/p>\n
4circles in 4 mm diameter<\/p>\n
in hypothetical position of the clock<\/p>\n
\u00a05\/1,5\/4, 5\/7 , 5\/10<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameters<\/td>\nGeometric accuracy<\/p>\n
 <\/td>\n<\/tr>\n
measurment range<\/strong><\/td>\n\n
100mm<\/p>\n
between consecutive large or small holes<\/span><\/pre>\n
 <\/td>\n<\/tr>\n
material<\/strong><\/td>\nacrylic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
 <\/p>\n\n\n\n\n\n\n\n
Image uniformity measurement module:<\/p>\n
\u00a0<\/strong><\/td>\n<\/tr>\n
dimansion and structure<\/b><\/td>\n\n
Cylindrical container with a diameter of 198 mm<\/p>\n
\u00a034 mm wide with two valves for filling or emptying distilled water<\/p>\n
 <\/td>\n
\"\"<\/td>\n<\/tr>\n
Checkable parameters<\/td>\nImage uniformity and artifacts<\/p>\n
 <\/td>\n<\/tr>\n
Measurement range<\/td>\nCT numbers<\/p>\n
 <\/td>\n<\/tr>\n
material<\/b><\/td>\nAcrylic cylindrical container containing a uniform substance (distilled water or air)<\/p>\n
 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u00a0<\/strong><\/p>\n
Compatible with:<\/p>\n
– <\/strong>IEC 61223-3-5<\/p>\n
– <\/strong>IEC 61223-2-6<\/p>\n
–\u00a0 <\/strong>AAPM guideline<\/p>\n","protected":false},"excerpt":{"rendered":"
The CT image quality phantom is designed and built with eight main cylinders to measure CT number accuracy, slice thickness accuracy, geometric accuracy, spatial resolution, […]<\/p>\n","protected":false},"author":1,"featured_media":422,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,23],"tags":[25,26,27,28],"class_list":["post-214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","category-quality-control","tag-ct-phantom","tag-26","tag-27","tag-28"],"views":1105,"_links":{"self":[{"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/posts\/214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/comments?post=214"}],"version-history":[{"count":6,"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/posts\/214\/revisions"}],"predecessor-version":[{"id":432,"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/posts\/214\/revisions\/432"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/media\/422"}],"wp:attachment":[{"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/media?parent=214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/categories?post=214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/behineparto.ir\/en\/wp-json\/wp\/v2\/tags?post=214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}