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Table 2 Summary of relevant studies

From: Evidence-based gynaecological practice: clinical review 3. The use of imaging for pre-operative planning in deep infiltrating endometriosis involving the rectum

Author [reference] Study period Study population Age TVS TRS MRI Blinding
Abrao [10] 2004-2006 104 Consecutive women with clinically suspected endometriosis Mean 33.8 years (SD 6.1) HDI 5000 ultrasound scanner with 5-9MHz transducer within 3months before surgery. Rectal enema used N/A 1.5T scanner with a Torso phase array coil. Contrast agent gadolinium 0.2mmol/kg. No bowel preparation used TVS carried out blinded to clinical data. MRI radiologist blinded to clinical data and TVS results
Bazot [11] 2000–2004 81 Consecutive women referred for surgical management of DIE Median 31.9years Ultramark HDI 5000 or Siemens Elegra ultrasound machine. 5-9MHz transducer. No bowel preparation used Olympus GF UM 20 Echo endoscope, 7.5 and 12MHz.   Sonographers informed of women’s clinical history and symptoms but blinded to physical examination and previous imaging. Different physicians performed TVS and TRS
Bazot [19] 2000–2005 Retrospective study of 92 consecutive women with clinically suspected pelvic endometriosis Median 31.8years Ultramark HDI 5000 or Siements Elegra ultrasound machine, 5-9MHz transducer. No bowel preparation used Olympus GF UM 20 Echo endoscope, 7.5 and 12MHz probe 1.5T scanner. Bowel preparation given. Contrast agent gadolinium All examinations conducted by different physicians with knowledge of clinical history and symptoms but blind to results of physical exam and other imaging
Chamié [12] 2005-2007 92 Women with a history and clinical examination consistent with endometriosis Mean 33years N/A N/A GE Signa 1.5T scanner. Contrast agent gadolinium. No bowel preparation used MRI images interpreted independently by 2 radiologists blinded to patient history
Chapron [13]   Retrospective study of 81 consecutive patients with histologically proven DIE. MRI and transrectal ultrasound given prior to planned surgery Mean 31.0 (SD6.7) N/A Olympus GF-UM20 scope ultrasound machine with 7.5 and 12MHz probes 1.5T Tesla Unit with a phased-array coil. No contrast aged used Patients already had a diagnosis of DIE but the ultrasonographer and radiologist were blind to clinical information when they interpreted the results of the tests
Delpy [14] 1998–2003 31 Women with suspected rectovaginal endometriosis based on clinical symptoms and/or abnormal clinical examination Mean 31.5years N/A (for rectal infiltration) 7.5MHz radial-scanning miniprobe (Fujinon) fitted with a distal balloon N/A Blind to precise clinical findings but with the knowledge of suspected endometriosis. Surgery conducted with full knowledge of imaging results
Guerriero [15] 2005-2007 88 Consecutive women with clinically suspected endometriosis Mean 33years (SD 5) 1Week before surgery using Technos MPX with 6.5-7.0MHz transducer. Paid special attention to tender areas. No rectal enema used. N/A N/A Not reported
Hudelist [16] 2007–2008 200 Women with clinically suspected endometriosis Median 33years Logic 9 or Accuvix XQ ultrasound machine 5-9MHz transducer combined with bimanual PV examination within 2months of surgery. No rectal enema used    PV examination performed first followed by TVS by the same examiner
Menada [17] 2006–2007 90 Women with clinically suspected rectovaginal endometriosis Median 32years Siemens Sonoline Antares ultrasound machine. 3.6-8.0MHz multifrequency transducer    
Given on day of surgery. Bowel preparation given on the day before surgery. Saline solution injected into the rectum during the procedure N/A N/A TVS carried out independently by 2 ultrasonographers with the knowledge of clinically suspected disease by blind to any other clinical information     
Piketty [18] 2005–2007 134 Women with clinically suspected DIE Mean 32.1years (SD 5) Toshiba ultrasound machine. 5-9MHz transducer. No rectal enema used Olympus UM 160 following rectal enema. 5, 7.5 and 12MHz frequencies used N/A Examiners told DIE was suspected but were not given information on clinical findings or other imaging findings