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Table 2 Patients and imaging

From: Utilization of MRI in surgical decision making in the shoulder

Q7—What percentage of … cases do arrive at your consultation office already with a completed MRI scan?

 

Mean

Minimum

Maximum

Std Deviation

Variance

Count

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

50.71

10

100

25.49

649.49

28

 b) Shoulder instability?

33.57

0

80

21.58

465.82

28

 c) Frozen shoulder?

25.56

0

80

22.33

498.77

27

 d) Glenohumeral arthritis?

26.15

0

70

18.41

339.05

26

 e) ACJ-Pathology?

24.8

0

80

23

528.96

25

Q8—What percentage of … cases do you order an MRI scan?

 

Mean

Minimum

Maximum

Std Deviation

Variance

Count

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

55.36

10

100

29.7

882.02

28

 b) Shoulder instability?

48.15

0

100

33

1089.16

27

 c) Frozen shoulder?

11.5

0

80

19.31

372.75

20

 d) Glenohumeral arthritis?

20

0

80

25.3

640

20

 e) ACJ-Pathology?

17

0

80

23.26

541

20

Q9—What percentage of … cases do you get a CT scan instead?

 

Mean

Minimum

Maximum

Std Deviation

Variance

Count

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

2

0

10

4

16

15

 b) Shoulder instability?

41.85

0

100

31.04

963.24

27

 c) Frozen shoulder?

3.13

0

40

9.82

96.48

16

 d) Glenohumeral arthritis?

66.43

0

100

34.87

1215.82

28

 e) ACJ-Pathology?

2.14

0

20

5.58

31.12

14

Q10—What percentage of … cases do you get an Ultrasound instead?

 

Mean

Minimum

Maximum

Std Deviation

Variance

Count

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

33.6

0

100

30.84

951.04

25

 b) Shoulder instability?

1.43

0

10

3.5

12.24

14

 c) Frozen shoulder?

13.33

0

50

19.55

382.22

15

 d) Glenohumeral arthritis?

17.33

0

90

28.63

819.56

15

 e) ACJ-Pathology?

6

0

50

13.06

170.67

15

Q11—Do you personally look at the MRI images in cases of … ?

 

Yes

 

No

 

Total

 

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

96.55%

28

3.45%

1

29

 

 b) Shoulder instability?

96.55%

28

3.45%

1

29

 

 c) Frozen shoulder?

89.66%

26

10.34%

3

29

 

 d) Glenohumeral arthritis?

93.10%

27

6.90%

2

29

 

 e) ACJ-Pathology?

89.66%

26

10.34%

3

29

 

Q12—Do you read the MRI report in cases of … ?

 

Yes

 

No

 

Total

 

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

89.66%

26

10.34%

3

29

 

 b) Shoulder instability?

89.66%

26

10.34%

3

29

 

 c) Frozen shoulder?

89.66%

26

10.34%

3

29

 

 d) Glenohumeral arthritis?

79.31%

23

20.69%

6

29

 

 e) ACJ-Pathology?

79.31%

23

20.69%

6

29

 
 

Q13—If No, why do you not read the report?

 

Answer

%

Count

   
 

often false positive

42.86%

3

   
 

often false negative

0.00%

0

   
 

takes too much time

0.00%

0

   
 

often not at hand

14.29%

1

   
 

other

42.86%

3

   
 

Total

100%

7

   
 

Q14—If Yes, why do you read the report?

 

Answer

%

Count

   
 

do not want to miss something

15.38%

4

   
 

to double-check one’s personal diagnosis

61.54%

16

   
 

because it helps my surgical decision

3.85%

1

   
 

other

19.23%

5

   
 

Total

100%

26