Digital Breast Tomosynthesis: A Pilot Observer Study

Good, Walter F.; Abrams, Gordon; Catullo, Victor J.; Chough, Denise M.; Ganott, Marie A.; Hakim, Christiane M.; Gur, David

doi:10.2214/ajr.07.2841

Cited by 144 publications

(98 citation statements)

References 14 publications

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“…Radiologists are increasingly using 3D volumetric imaging consisting of a large number of X-ray slices per scan: 64-128 slices for computed tomography (83) and 50-90 slices for digital breast tomosynthesis (DBT) (84)(85)(86). Based on clinical reading times of 2-3 min per case (84,85) and 250-350 ms per fixation, radiologists would average no more than 14.4 fixations per slice when inspecting one DBT scan (3 min of 250 ms per fixation across 50 slices for one breast) and possibly as little as 1.9 fixations per slice when inspecting a separate DBT scan for each breast (2 min of 350 ms per fixation across 180 total slices for both breasts). Similarly, the increasing amounts of surveillance photographs taken across space and time by unmanned aerial vehicles and ever-cheaper quadcopters might not permit geospatial analysts to thoroughly fixate all aerial image regions for a case.…”

Section: Simple Majority Voting Obtains Inferior Wisdom Of Crowd Benementioning

confidence: 99%

The wisdom of crowds for visual search

Juni

Eckstein

2017

Proc. Natl. Acad. Sci. U.S.A.

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Decision-making accuracy typically increases through collective integration of people's judgments into group decisions, a phenomenon known as the wisdom of crowds. For simple perceptual laboratory tasks, classic signal detection theory specifies the upper limit for collective integration benefits obtained by weighted averaging of people's confidences, and simple majority voting can often approximate that limit. Life-critical perceptual decisions often involve searching large image data (e.g., medical, security, and aerial imagery), but the expected benefits and merits of using different pooling algorithms are unknown for such tasks. Here, we show that expected pooling benefits are significantly greater for visual search than for single-location perceptual tasks and the prediction given by classic signal detection theory. In addition, we show that simple majority voting obtains inferior accuracy benefits for visual search relative to averaging and weighted averaging of observers' confidences. Analysis of gaze behavior across observers suggests that the greater collective integration benefits for visual search arise from an interaction between the foveated properties of the human visual system (high foveal acuity and low peripheral acuity) and observers' nonexhaustive search patterns, and can be predicted by an extended signal detection theory framework with trial to trial sampling from a varying mixture of high and low target detectabilities across observers (SDT-MIX). These findings advance our theoretical understanding of how to predict and enhance the wisdom of crowds for real world search tasks and could apply more generally to any decision-making task for which the minority of group members with high expertise varies from decision to decision.group decision rules | signal detection theory | ideal observer analyses | wisdom of crowds G roups of insects (1-4), fish (5-7), birds (8-10), mammals (11)(12)(13)(14), and primates (15-18) have been shown to aggregate their individual judgments into group decisions for various tasks (19,20). Although some groups seem to have leaders who make decisions alone on behalf of their groups (17,(21)(22)(23), it is difficult for individuals to outperform even simple aggregations of the entire group's individual judgments (4,7,9,10,19,(24)(25)(26). Perhaps that is why humans often make important decisions as a group (27-29), even if the only expedient (30, 31) but effective (24, 31-34) group decision mechanism is to use the simple majority voting rule (35).Previous human studies have shown that combining people's judgments into group decisions can lead to accuracy benefits in various domains, such as estimation (36-38), detection (34,(39)(40)(41)(42)(43)(44), identification (45-47), and prediction (46, 48-52), a phenomenon known as the wisdom of crowds (53). For artificial tasks, where perceptual decisions are limited only by noise that is internal to each observer's brain (i.e., no external noise), the maximum wisdom of crowd benefits are specified by the idealized signal dete...

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Section: Simple Majority Voting Obtains Inferior Wisdom Of Crowd Benementioning

confidence: 99%

The wisdom of crowds for visual search

Juni

Eckstein

2017

Proc. Natl. Acad. Sci. U.S.A.

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“…Hierbei gab es ebenfalls eine Innovation von konventionellen, über Speicherfolien zu volldigitalen Systemen [14][15][16][17][18][19][20][21][22] bis hin zur CMOS-Technologie [23] und dem Einsatz der Tomosynthese [24]. Durch die Neuentwicklung der digitalen Brusttomosynthese (DBT) [25][26][27][28][29][30][31][32] besteht nun auch die Möglichkeit der Erstellung intraoperativer Präparateradiogramme [24]. Die 3 Untersucher beurteilten zufallsverteilt (Zufallsgenerator), nur in Kenntnis des Ausgangsbefundes (histologisch Diagnose B5, diagnostisch BI-RADS 6), intraoperativ auf einem Befundungsmonitor die 200 Präparate (Präparateradiografie) mit dem BioVision™-System, 2 Ebenen (System 2) und der Tomosynthese (1 Ebene) einerseits sowohl anhand der Projektionsbilder als auch im Cine-Mode (System 3), wobei als Standard das Präparatera-diogramm in 2 Ebenen (System 1) definiert wurde, aufgrund dessen bei 44 Patientinnen eine Re-Exzision durchgeführt wurde.…”

Section: Diskussionunclassified

“…Here too, there has been a gradual switch from conventional systems using slides to fully digital systems [14][15][16][17][18][19][20][21][22] to CMOS technology [23] and Tomosynthesis [24]. The most recent developments in digital breast tomosynthesis (DBT) [25][26][27][28][29][30][31][32] make it possible to create specimen radiograms intraoperatively [24]. The 3 investigating radiologists assessed 200 specimens (specimen radiograms) randomly assigned to them (random generator) with only a prior knowledge of the initial pathology findings (histological classification B5, diagnostic classification BI-RADS 6).…”

Section: Diskussionmentioning

confidence: 99%

Full Field Digital Mammography (FFDM) versus CMOS Technology versus Tomosynthesis (DBT) - Which System Increases the Quality of Intraoperative Imaging?

Schulz‐Wendtland

Dilbat

Bani

et al. 2012

Geburtsh Frauenheilk

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Aim: The aim of this prospective clinical study was to assess whether it would be possible to reduce the rate of re-excisions and improve the quality using CMOS technology or digital breast tomosynthesis (DBT) compared to a conventional FFDM system. Material and Methods: An invasive breast cancer (BI-RADS 5) was diagnosed in 200 patients in the period from 5/2011 to 1/2012. After histological verification, a breast-conserving therapy was performed with intraoperative imaging. Three different imaging systems were used: 1

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“…Innovations in this field have included the move from conventional systems via the use of imaging plates and full digital systems [14][15][16][17][18][19][20][21][22] to CMOS technology [23] and tomosynthesis [24]. With the recent use of digital breast tomosynthesis (DBT) [25][26][27][28][29][30][31][32] to complement digital mammography specimen radiography can now be done intraoperatively. In the literature, it was noted that the increase in sensitivity and specificity obtained with tomosynthesis [28] used in addition to digital mammography could reduce recall rates [27,29], also in breast cancer screening of women [32].…”

mentioning

confidence: 99%

“…With the recent use of digital breast tomosynthesis (DBT) [25][26][27][28][29][30][31][32] to complement digital mammography specimen radiography can now be done intraoperatively. In the literature, it was noted that the increase in sensitivity and specificity obtained with tomosynthesis [28] used in addition to digital mammography could reduce recall rates [27,29], also in breast cancer screening of women [32]. In the system we used, specimens were examined radiologically using 25 projections and an angular range of 50 degrees.…”

mentioning

confidence: 99%

Full Field Digital Mammography (FFDM) versus CMOS Technology, Specimen Radiography System (SRS) and Tomosynthesis (DBT) - Which System Can Optimise Surgical Therapy?

Schulz‐Wendtland

Dilbat

Bani

et al. 2013

Geburtsh Frauenheilk

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Aim: This prospective clinical study aimed to evaluate whether it would be possible to reduce the rate of re-excisions using CMOS technology, a specimen radiography system (SRS) or digital breast tomosynthesis (DBT) compared to a conventional full field digital mammography (FFDM) system. Material and Method: Between 12/2012 and 2/ 2013 50 patients were diagnosed with invasive breast cancer (BI-RADS™ 5). After histological verification, all patients underwent breast-conserving therapy with intraoperative imaging using 4 different systems and differing magnifications: 1.

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Digital Breast Tomosynthesis: A Pilot Observer Study

Abstract: Tomosynthesis-based breast imaging may have great potential, but much work is needed before its optimal role in the clinical environment is known.

Cited by 144 publications

References 14 publications

The wisdom of crowds for visual search

The wisdom of crowds for visual search

Full Field Digital Mammography (FFDM) versus CMOS Technology versus Tomosynthesis (DBT) - Which System Increases the Quality of Intraoperative Imaging?

Full Field Digital Mammography (FFDM) versus CMOS Technology, Specimen Radiography System (SRS) and Tomosynthesis (DBT) - Which System Can Optimise Surgical Therapy?

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