Table 1 Characteristics of 14 studies using standalone DL systems and 12 studies using assistive DL systems.

From: Diagnostic performance of deep learning in ultrasound diagnosis of breast cancer: a systematic review

Study

Design

Site

Patient

US vendor

Index test

Comparator

BIRADS lexicon

Cutoff value

Reference standard

Standalone DL system

Kim 202118

Retrospective

1 (Korea)

146

RS85 Prestige

S-Detect

2 human readers (1 with 6-year experience, 1 with 3-month experience in breast imaging)

5th

4a

Pathology

Xiao 201919

Prospective

1 (China)

437

RS80 Prestige

S-Detect

2 human readers (1 experienced, 1 resident)

5th

4a

Pathology

Cho 201820

Prospective

1 (Korea)

116

RS80A

S-Detect

2 human readers (1 with 7-year experience, 1 with 1-year experience in breast imaging)

5th

4a

Pathology

Follow up (>2 year)

Segni 201822

Prospective

1 (Italy)

61

RS80A

S-Detect

5 human readers (1 experienced, 4 in-training residents)

5th

4a

Pathology

Follow up (<2 years)

Xia 202123

Prospective

1 (China)

40

RS80A

S-Detect

4 human readers (2 senior, 2 junior)

NR†

4b

Pathology

Lee 202224

Retrospective

1 (Korea)

472

RS80A

S-Detect

6 human readers (3 experienced, 3 inexperience)

NR

4a

Pathology

Follow up (>2 year)

Choi 201925

Retrospective

1 (Korea)

226

RS80A

S-Detect

4 human readers (2 senior, 2 junior)

NR

4a

Pathology

Follow up (7–28 months)

Nicosia 202226

Retrospective

1 (Italy)

210

RS80A

S-Detect

4 human readers (2 senior, 2 junior)

NR

4b

Pathology

Lai 202227

Retrospective

1 (China)

172

Philips iU22

Toshiba Aplio 500

Canon Aplio i800

BU-CAD

16 human readers

5th

4a

Pathology

Follow up (>2 year)

Lee 201928

Retrospective

1 (Korea)

413

RS80A

S-Detect

10 human readers (5 experienced, 5 inexperience)

NR

4a

Pathology

Follow up (>1 year)

Wei 202129

Prospective

1 (China)

192

RS80A

S-Detect

4 human readers (2 experienced, 2 inexperience)

5th

4a

Pathology

Wei 202230

Prospective

9 (China)

901

RS80A

S-Detect

4 human readers (2 experienced, 2 inexperience)

5th

4a

4b

Pathology

Ciritsis 201931

Retrospective

Training set: 1 site (country NR†)

Test set: public dataset (multiple sites)

582

NR

In-house

2 human readers (over 8 years of experience)

5th

4a

Pathology

Follow up (time NR†)

Gu 202232

Prospective

Training set: 32 sites (China)

Test set: public dataset (multiple sites)

5012

Resona7

Resona7s

Resona7T

Resona8

Resona8T

DC-80

In-house

5 human readers (2 experienced, 3 inexperience)

NR

4a

Pathology

Assistive DL system

Park 201917

Retrospective

1 China

91

RS80A

Human readers + S-Detect

5 human readers (3 less experienced, 2 experienced)

5th

4a

PathologyFollow up (6–35 months)

Kim 202118

Retrospective

1 (Korea)

146

RS85 Prestige

Human readers + S-Detect

2 human readers (with 6-year and 3-month experience in breast imaging, respectively)

5th

4a

Pathology

Cho 201820

Prospective

1 (Korea)

116

RS80A

Human readers + S-Detect

2 human readers (with 7- and 1 1-year experience in breast imaging, respectively)

5th

4a

Pathology

Follow up (>2 year)

Wang 202121

Prospective

1 (China)

167

RS80A

Human readers + S-Detect

2 human readers (with 8- and 10-year experience in breast US, respectively)

NR

4a

Pathology

Xia 202123

Prospective

1 (China)

40

RS80A

Human readers + S-Detect

4 human readers (2 senior, 2 junior)

NR

4b

Pathology

Lee 202224

Retrospective

1 (Korea)

472

RS80A

Human readers + S-Detect

6 human readers (3 experienced, 3 inexperience)

NR

4a

Pathology

Follow up (>2 year)

Choi 201925

Retrospective

1 (Korea)

226

RS80A

Human readers + S-Detect

4 human readers (2 senior, 2 junior)

NR

4a

Pathology

Follow up (7–28 months)

Lai 202227

Retrospective

1 (China)

172

Philips iU22

Toshiba Aplio 500

Canon Aplio i800

Human readers + BU-CAD

16 human readers

5th

4a

Pathology

Follow up (>2 year)

Lee 201928

Retrospective

1 (Korea)

413

RS80A

Human readers + S-Detect

10 human readers (5 experienced, 5 inexperience)

NR

4a

Pathology

Follow up (>1 year)

Wei 202129

Prospective

1 (China)

192

RS80A

Human readers + S-Detect

4 human readers (2 experienced, 2 inexperience)

5th

4a

Pathology

Wei 202230

Prospective

9 (China)

901

RS80A

Human readers + S-Detect

4 human readers (2 experienced, 2 inexperience)

5th

4a

4b

Pathology

Gu 202232

Prospective

Training set: 32 sites (China)

Test set: public dataset (multiple sites)

5012

Resona7

Resona7s

Resona7T

Resona8

Resona8T

DC-80

Human readers + In-house AI system

5 human readers

(2 experienced, 3 inexperience)

NR

4a

Pathology

  1. US vendor: detailed information presented in Table S6. NR†: not reported.