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Table 2 Summary demographic characteristics of patients included in the studies selected for narrative synthesis

From: Comparative performance of fully-automated and semi-automated artificial intelligence methods for the detection of clinically significant prostate cancer on MRI: a systematic review

Study

Year

Country

No. of patients

Age, years

PSA, ng/mL

Patient population

Bx

MRI vs Bx

Time MRI to Bx

No. of centres /vendors

No. of readers

Reader experience, years

Studies using deep learning-based fully-automated AI methods

Wang [20]

2020

Netherlands

346

66 (48–83)

13 (1–56)

Clinically suspected

TB

Pre-Bx

NR

1/1

1

20

Fernandez-Quilez [21]

2021

Netherlands

200

66 (48–83)

13 (1–56)

Clinically suspected

TB

Pre-Bx

NR

1/1

4

NR

Schelb [22]

2019

Germany

312

Training: 64 [58–71] Test: 64 [60–69]

Training: 7.0 [5.0–10.2]

Test: 6.9 [5.1–8.9]

Clinically suspected

TB

Pre-Bx

NR

1/1

2

0.5, 10

Deniffel [23]

2020

Canada

499

Training: 63.8 ± 8.1 Test: 64.4 ± 8.4

Training: 7.6 [5.0–10.8]a

Test: 7.2 [5.2–11.2]

Clinically suspected

TB

Pre-Bx

NR

1/1

2

15, 3

Seetharaman [24]

2021

USA

424

Training: 63.8 (49–76)

Test: 65 (38–82)

Training: 6.8 (3.3–28.6)

Test: 7.1 (0.9–63.0)

Clinically suspected

RP or TB

Pre-Bx or Pre-Op

NR

1/1

Unclear

Unclear

Studies using traditional machine learning-based semi-automated AI methods

Bonekamp [25]

2018

Germany

316

64 [58–71]

Training: 6.6 [4.9–9.5]

Test: 7.5 [5.4–11.0]

Clinically suspected

TB

Pre-Bx

NR

1/1

2

0.5, 8

Min [26]

2019

China

280

Training,csPCa: 68.8 ± 8.3Training, iPCa: 71.5 ± 8.4

Test, csPCa: 70.3 ± 7.8 Test, iPCa: 71.6 ± 5.7

NRb

Clinically suspected

TB

Pre-Bx

NR

1/1

2

NR, 20

Kwon [27]

2018

Netherlands

344

66 (48–83)

13 (1–56)

Clinically suspected

TB

Pre-Bx

NR

1/1

2

 > 25

Castillo [28]

2021

Netherlands

107

C1: 64 ± 7

C2: N/A C3: N/A

C1: 12 ± 10

C2: 9 ± 5

C3: 10 ± 8

Clinically suspected

RP

Pre-Op

NR

3/3

1

NR

Bleker [29]

2019

Netherlands

206

66 (48–83)

13 (1–56)

Clinically suspected

TB

Pre-Bx

NR

1/1

Unclear

Unclear

Li [30]

2020

China

381

csPCa:75 [68–81]

iPCa: 69 [63–75]

csPCa:49.3 [21.1–83.4

iPCa:9.9 [6.7–15.9]

Clinically suspected

TB

Pre-Bx

NR

1/1

2

3, 9

Woźnicki [31]

2020

Germany

191

Training: 68 [63–74] Test: 69 [63–72]

Training:7.6 [5.7–11.0]

Test: 8.2 [6.8–11.9]

Clinically suspected

TB

Pre-Bx

Bx 3 months before MRI

1/2

2

7, 7

Bevilacqua [32]

2021

Italy

76

csPCa: 66 ± 6.8

iPCa: 65 ± 8.8

csPCa: 7.8 ± 7.5

iPCa: 5.3 ± 3.0

Biopsy-proven

TB

Post-Bx

Bx 6 weeks before MRI

1/1

2

7, 25

Toivonen [33]

2019

Finland

62

65 (45–73)

9.3 (1.3–30)

Biopsy-proven

RP

Pre-Bx

NR

1/1

2

NR

Antonelli [34]

2019

UK

164

64 (43–83)

7.4 (2.5–30.3)

Clinically suspected

TB

Pre-Bx

NR

1/1

1

3

Yoo [35]

2019

Canada

427

NR

NR

Clinically suspected

NR

Pre-Bx

NR

1/1

NR

NR

Hiremath [36]

2021

USA, Netherlands

592

C1: 65.5 (59–72) C2: 63 (59–68)

C3: 62 (56–66)

C4: 65.5 (62–73)

C1: 6.6 (0.25–88.2)

C2: 6.7

(5–10)

C3: 5.7 (4.54–9.58)

C4: 7.7 (4.8–11.3)

Clinically suspected

RP or SB or

TB

Pre-Bx

NR

5/3

5

 > 15,

 > 15,

 > 15,

 > 10,

 > 10

  1. Bx, biopsy; C, cohort; MRI, magnetic resonance imaging; NR, not reported; PSA, prostate-specific antigen; RP, radical prostatectomy; SB, systematic biopsy; TB, targeted biopsy
  2. aData missing for 110 cases
  3. bPSA values were reported by subcategories (< 4 ng/mL, 4–10 ng/mL, > 10 ng/mL), see the original reference [26] for further details