{"id":238740,"date":"2024-10-19T15:36:13","date_gmt":"2024-10-19T15:36:13","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-61391-22010\/"},"modified":"2024-10-25T10:17:35","modified_gmt":"2024-10-25T10:17:35","slug":"bs-en-61391-22010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-61391-22010\/","title":{"rendered":"BS EN 61391-2:2010"},"content":{"rendered":"

IEC 61391-2:2010 defines terms and specifies methods for measuring the maximum depth of penetration and the local dynamic range of real time ultrasound B MODE scanners. The types of transducers used with these scanners include: – mechanical probes; – electronic phased arrays; – linear arrays; – curved arrays; – two-dimensional arrays; – three-dimensional scanning probes based on a combination of the above types. All scanners considered are based on pulse-echo techniques. The test methodology is applicable for transducers operating in the 1 MHz to 15 MHz frequency range operating both in fundamental mode and in harmonic modes that extend to 15 MHz. However, testing of harmonic modes above 15 MHz is not covered by this standard.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
6<\/td>\nCONTENTS <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
10<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
15<\/td>\n4 General requirement
5 Environmental conditions <\/td>\n<\/tr>\n
16<\/td>\n6 Equipment and data required
6.1 General
6.2 Phantoms <\/td>\n<\/tr>\n
17<\/td>\n6.3 Test equipment for measuring local dynamic range <\/td>\n<\/tr>\n
18<\/td>\nFigures
Figure 1 \u2013 Arrangement for measuring local dynamic range using an acoustic-signal injection technique <\/td>\n<\/tr>\n
19<\/td>\n6.4 Digitized image data
Figure 2 \u2013 Arrangement for measuring local dynamic range using an acoustically-coupled burst generator <\/td>\n<\/tr>\n
21<\/td>\n7 Measurement methods
7.1 System sensitivity: maximum depth of penetration <\/td>\n<\/tr>\n
22<\/td>\nFigure 3 \u2013 Image of the penetration phantom <\/td>\n<\/tr>\n
23<\/td>\nFigure 4 \u2013 Mean digitized image data value vs. depth for the phantom image data (A(j)) and for the noise image data (A'(j)) <\/td>\n<\/tr>\n
24<\/td>\n7.2 Local dynamic range <\/td>\n<\/tr>\n
25<\/td>\nFigure 5 \u2013 Digitized-image data vs. attenuator setting during local dynamic range measurements using acoustic signal injection <\/td>\n<\/tr>\n
26<\/td>\nFigure 6 \u2013 Image of phantom with inclusions (circles) <\/td>\n<\/tr>\n
27<\/td>\nFigure 7 \u2013 Ensemble-average mean pixel value vs. backscatter contrast of inclusions <\/td>\n<\/tr>\n
28<\/td>\nAnnex A (informative) Phantom for Determining Maximum Depth of Penetration
Figure A.1 \u2013 Phantom for maximum depth of penetration tests <\/td>\n<\/tr>\n
30<\/td>\nAnnex B (informative) Local dynamic range using acoustical test objects <\/td>\n<\/tr>\n
31<\/td>\nFigure B.1 \u2013 Possible arrangement of reflectors for determining local dynamic range <\/td>\n<\/tr>\n
32<\/td>\nFigure B.2 \u2013 Displayed intensity (or image pixel value) vs. reflector reflection coefficient <\/td>\n<\/tr>\n
34<\/td>\nFigure B.3 \u2013 Flat ended wire test object for determining local dynamic range <\/td>\n<\/tr>\n
35<\/td>\nFigure B.4 \u2013 The experimentally observed backscattering cross section of flat-ended stainless-steel wires as a function of diameter for three frequencies: 9.6 MHz; 4.8 MHz; 2.4 MHz [33] <\/td>\n<\/tr>\n
37<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Ultrasonics. Pulse-echo scanners – Measurement of maximum depth of penetration and local dynamic range<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2010<\/td>\n42<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":238742,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[270,2641],"product_tag":[],"class_list":{"0":"post-238740","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-50","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/238740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/238742"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=238740"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=238740"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=238740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}